@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Nunito:wght@400;500;600;700&display=swap');

:root {
  --brand-blue: #4361EE;
  --brand-violet: #7B5EA7;
  --brand-pink: #F72585;
  --brand-gradient: linear-gradient(135deg, #4361EE, #7B5EA7, #F72585);
  --brand-gradient-soft: linear-gradient(135deg, rgba(67, 97, 238, 0.15), rgba(247, 37, 133, 0.1));

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.18);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.24);
  --shadow-glow: 0 0 32px rgba(67, 97, 238, 0.3);

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);

  --font-display: 'Outfit', sans-serif;
  --font-body: 'Nunito', sans-serif;
}

@media (min-width: 769px) {
  .mobile-bottom-nav {
    display: none;
  }
}

@media (max-width: 768px) {
  body {
    padding-left: 0;
  }

  .desktop-sidebar {
    display: none;
  }

  .mobile-bottom-nav {
    display: flex;
  }
}

.main-content {
  padding-top: 60px;
  margin-left: 0;
  min-height: 100vh;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  padding-left: clamp(8px, 1.5vw, 16px);
  padding-right: clamp(8px, 1.5vw, 16px);
}

[data-theme="dark"],
.theme-dark {
  --bg-primary: #000000;
  --bg-secondary: #090909;
  --bg-card: #121212;
  --bg-card-hover: #1A1A1A;
  --bg-input: #101010;
  --bg-input-focus: #161616;
  --bg-overlay: rgba(0, 0, 0, 0.94);
  --bg-nav: rgba(0, 0, 0, 0.9);

  --nav-surface: var(--bg-primary);
  --nav-hover: rgba(255, 255, 255, 0.08);
  --nav-active: rgba(255, 255, 255, 0.13);

  --text-primary: #F5F5F5;
  --text-secondary: #B1B1B1;
  --text-muted: #8A8A8A;
  --text-placeholder: #696969;
  --text-inverse: #000000;

  --border-color: rgba(255, 255, 255, 0.14);
  --border-focus: rgba(67, 97, 238, 0.6);
  --border-input: rgba(255, 255, 255, 0.18);

  --btn-primary-bg: linear-gradient(135deg, #4361EE, #6B48C8);
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: rgba(255, 255, 255, 0.08);
  --btn-secondary-text: #F5F5F5;
  --btn-secondary-border: rgba(255, 255, 255, 0.2);

  --tab-active-bg: #4361EE;
  --tab-inactive: #8C8C8C;

  --success: #10D982;
  --error: #FF6B9D;
  --error-light: #FF8FAB;
  --error-gradient: linear-gradient(135deg, #FF6B9D, #C44569);
  --error-glow: rgba(255, 107, 157, 0.3);
  --warning: #FFB703;
  --info: #4CC9F0;

  --scrollbar-thumb: #4361EE44;
  --scrollbar-track: #111111;

  --academic-fill: rgba(67, 97, 238, 0.15);
  --academic-stroke: rgba(67, 97, 238, 0.4);
}

[data-theme="light"],
.theme-light {
  --bg-primary: #F8F9FC;
  --bg-secondary: #EEF1FA;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F5F7FC;
  --bg-input: #F0F3FA;
  --bg-input-focus: #E8ECF6;
  --bg-overlay: rgba(248, 249, 252, 0.98);
  --bg-nav: rgba(255, 255, 255, 0.92);

  --nav-surface: var(--bg-primary);
  --nav-hover: rgba(0, 0, 0, 0.04);
  --nav-active: rgba(0, 0, 0, 0.06);

  --text-primary: #1A1D2E;
  --text-secondary: #4A4F7A;
  --text-muted: #7B81A6;
  --text-placeholder: #A8AECA;
  --text-inverse: #F0F2FF;

  --border-color: rgba(0, 0, 0, 0.08);
  --border-focus: rgba(67, 97, 238, 0.6);
  --border-input: rgba(0, 0, 0, 0.12);

  --btn-primary-bg: linear-gradient(135deg, #4361EE 0%, #5B52D9 50%, #6B48C8 100%);
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: rgba(67, 97, 238, 0.08);
  --btn-secondary-text: #3D52C9;
  --btn-secondary-border: rgba(67, 97, 238, 0.2);

  --tab-active-bg: #4361EE;
  --tab-inactive: #9CA3C9;

  --success: #0DB56A;
  --error: #E74C3C;
  --error-light: #EC7063;
  --error-gradient: linear-gradient(135deg, #E74C3C, #C0392B);
  --error-glow: rgba(231, 76, 60, 0.25);
  --warning: #D4920A;
  --info: #0096C7;

  --scrollbar-thumb: #4361EE66;
  --scrollbar-track: #E8ECF6;

  --shadow-sm: 0 2px 12px rgba(67, 97, 238, 0.08);
  --shadow-md: 0 8px 32px rgba(67, 97, 238, 0.12);
  --shadow-lg: 0 20px 56px rgba(67, 97, 238, 0.16);
  --shadow-glow: 0 0 40px rgba(67, 97, 238, 0.2);

  --academic-fill: rgba(67, 97, 238, 0.15);
  --academic-stroke: rgba(67, 97, 238, 0.6);

  --accent-blue: rgba(67, 97, 238, 0.1);
  --accent-violet: rgba(123, 94, 167, 0.1);
  --accent-pink: rgba(247, 37, 133, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

@media (min-width: 769px) {
  body {
    padding-left: 72px;
  }
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 99px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
}

.gradient-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.icon-sm {
  width: 16px;
  height: 16px;
}

.icon-lg {
  width: 24px;
  height: 24px;
}

.icon-xl {
  width: 32px;
  height: 32px;
}

.theme-icon {
  width: 20px;
  height: 20px;
}

.icon-sun {
  background: radial-gradient(circle, #FFB703 30%, transparent 70%);
  border-radius: 50%;
  position: relative;
}

.icon-sun::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, #FFB703 20%, transparent 40%);
}

.icon-moon {
  position: relative;
}

.info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  color: var(--brand-blue);
  opacity: 0.8;
}

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.auth-page::before,
.auth-page::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

.auth-page::before {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #4361EE, transparent);
  top: -150px;
  left: -150px;
}

.auth-page::after {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #F72585, transparent);
  bottom: -100px;
  right: -100px;
}

.floating-objects {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.floating-object {
  position: absolute;
  opacity: 0.6;
  animation: float 6s ease-in-out infinite;
}

.floating-object:nth-child(1) {
  top: 10%;
  left: 5%;
  animation-delay: 0s;
}

.floating-object:nth-child(2) {
  top: 20%;
  right: 8%;
  animation-delay: 1s;
}

.floating-object:nth-child(3) {
  bottom: 25%;
  left: 8%;
  animation-delay: 2s;
}

.floating-object:nth-child(4) {
  bottom: 15%;
  right: 5%;
  animation-delay: 0.5s;
}

.floating-object:nth-child(5) {
  top: 40%;
  left: 2%;
  animation-delay: 1.5s;
}

.floating-object:nth-child(6) {
  top: 60%;
  right: 3%;
  animation-delay: 2.5s;
}

.floating-object:nth-child(7) {
  bottom: 30%;
  left: 3%;
  animation-delay: 3s;
}

.floating-object:nth-child(8) {
  bottom: 40%;
  right: 8%;
  animation-delay: 0.8s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(var(--float-y, -20px)) rotate(var(--float-rot, 5deg));
  }
}

.floating-object svg {
  width: 40px;
  height: 40px;
  fill: var(--academic-fill);
  stroke: var(--academic-stroke);
  stroke-width: 1.5;
  filter: drop-shadow(0 2px 4px rgba(67, 97, 238, 0.15));
}

.floating-object:nth-child(odd) svg {
  width: 35px;
  height: 35px;
}

.floating-object:nth-child(3n) svg {
  width: 45px;
  height: 45px;
}

.auth-container {
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
}

.theme-toggle-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-sm);
}

.theme-toggle-btn:hover {
  background: var(--bg-card-hover);
  color: var(--brand-blue);
  transform: scale(1.05);
}

.auth-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 28px;
  transition: var(--transition);
  padding: 6px 0;
}

.auth-back:hover {
  color: var(--brand-blue);
  transform: translateX(-3px);
}

.auth-back svg {
  width: 20px;
  height: 20px;
}

.auth-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}

.auth-logo img {
  display: block;
  height: clamp(36px, 6vw, 52px);
  width: auto;
  max-width: min(320px, 85vw);
  object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
  opacity: 0;
  transform: translateY(6px) scale(0.98);
  filter: brightness(0.92) drop-shadow(0 10px 30px rgba(67, 97, 238, 0.18));
  animation: logoBrightIn 700ms cubic-bezier(0.22, 1, 0.36, 1) 120ms forwards, logoGlowPulse 3.2s ease-in-out 900ms infinite;
}

@keyframes logoBrightIn {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: brightness(1.08) drop-shadow(0 14px 42px rgba(67, 97, 238, 0.28));
  }
}

@keyframes logoGlowPulse {

  0%,
  100% {
    filter: brightness(1.02) drop-shadow(0 12px 38px rgba(67, 97, 238, 0.22));
  }

  50% {
    filter: brightness(1.12) drop-shadow(0 18px 54px rgba(247, 37, 133, 0.20));
  }
}

.auth-header {
  margin-bottom: 32px;
}

.auth-header .welcome {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 2px;
}

.auth-header h1 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  font-size: 14px;
  font-weight: 500;
  border-left: 4px solid;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.alert-error {
  background: rgba(255, 77, 109, 0.1);
  border-color: var(--error);
  color: var(--error);
}

.alert-success {
  background: rgba(16, 217, 130, 0.1);
  border-color: var(--success);
  color: var(--success);
}

.alert-info {
  background: rgba(76, 201, 240, 0.1);
  border-color: var(--info);
  color: var(--info);
}

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  background: var(--bg-card);
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-bottom: 12px;
  min-width: 300px;
  max-width: 400px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: all;
  transform: translateX(100%);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast.hide {
  transform: translateX(100%);
  opacity: 0;
}

.toast-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.toast-content {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.toast-close {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.toast-close:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.toast.error {
  border-color: var(--error);
  background: rgba(255, 77, 109, 0.1);
}

.toast.error .toast-icon {
  color: var(--error);
}

.toast.success {
  border-color: var(--success);
  background: rgba(16, 217, 130, 0.1);
}

.toast.success .toast-icon {
  color: var(--success);
}

.toast.info {
  border-color: var(--info);
  background: rgba(76, 201, 240, 0.1);
}

.toast.info .toast-icon {
  color: var(--info);
}

.form-group {
  margin-bottom: 16px;
  position: relative;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}

.input-error {
  border-color: var(--error) !important;
  background: rgba(255, 107, 157, 0.05) !important;
  position: relative;
}

.input-error:focus {
  border-color: var(--error-light) !important;
  box-shadow: 0 0 0 4px var(--error-glow), 0 0 20px var(--error-glow) !important;
  animation: errorPulse 0.3s ease-in-out;
}

.input-error::placeholder {
  color: var(--error-light);
  opacity: 0.7;
}

.field-error {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  margin-bottom: 0;
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.3;
  background: var(--error-gradient);
  color: white;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  border: none;
  box-shadow: 0 4px 12px var(--error-glow);
  animation: errorSlideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
  opacity: 1;
  transform: translateY(0) scale(1);
  transition: opacity 0.3s ease, transform 0.3s ease;
  cursor: pointer;
  user-select: none;
  width: 100%;
  box-sizing: border-box;
}

.input-wrapper>.field-error {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  margin-top: 0;
  position: relative;
  margin-bottom: 8px;
}

.form-group>.field-error {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  margin-top: 4px;
  margin-bottom: 8px;
}

.input-wrapper {
  position: relative;
}

.input-wrapper.has-icon-right {
  position: relative;
}

.input-wrapper.has-icon-right>.field-error {
  margin-bottom: 8px;
}

.input-wrapper>.field-error::after {
  display: block;
}

.form-group>.field-error::after {
  display: block;
}

.field-error:hover {
  transform: translateY(0) scale(1.02);
  box-shadow: 0 6px 16px var(--error-glow);
}

.field-error.dismissing {
  opacity: 0;
  transform: translateY(-8px) scale(0.95);
  pointer-events: none;
}

.field-error::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: errorShimmer 2s infinite;
}

.field-error::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid var(--error);
  position: absolute;
  top: -6px;
  left: 16px;
}

.form-group.has-error .form-input,
.form-group.has-error .form-select {
  border-color: var(--error);
  background: rgba(255, 107, 157, 0.05);
  position: relative;
}

.form-group.has-error .form-input:focus,
.form-group.has-error .form-select:focus {
  border-color: var(--error-light);
  box-shadow: 0 0 0 4px var(--error-glow), 0 0 20px var(--error-glow);
  animation: errorPulse 0.3s ease-in-out;
}

.form-group.has-error .form-label {
  color: var(--error);
  font-weight: 600;
}

@keyframes errorSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.95);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes errorSlideOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }

  to {
    opacity: 0;
    transform: translateY(-8px) scale(0.95);
  }
}

@keyframes errorShimmer {
  0% {
    left: -100%;
  }

  100% {
    left: 100%;
  }
}

@keyframes errorPulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.02);
  }
}

.forgot-link-container {
  margin-top: 8px;
  text-align: right;
}

.forgot-link {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.forgot-link:hover {
  color: var(--brand-blue);
}

.input-wrapper {
  position: relative;
}

.form-input {
  width: 100%;
  background: var(--bg-input);
  border: 1.5px solid var(--border-input);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 16px 20px;
  transition: var(--transition);
  outline: none;
  appearance: none;
}

.form-input:focus {
  border-color: var(--brand-blue);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 4px rgba(67, 97, 238, 0.12);
}

.form-input::placeholder {
  color: var(--text-placeholder);
}

.form-input.has-icon-right {
  padding-right: 52px;
}

.input-icon-right {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
  display: flex;
  transition: var(--transition);
  z-index: 10;
}

.input-icon-right:hover {
  color: var(--brand-blue);
}

.password-strength {
  margin-top: 8px;
  display: flex;
  gap: 4px;
}

.strength-bar {
  flex: 1;
  height: 3px;
  border-radius: 99px;
  background: var(--border-input);
  transition: background 0.3s ease;
}

.strength-bar.active-weak {
  background: var(--error);
}

.strength-bar.active-medium {
  background: var(--warning);
}

.strength-bar.active-strong {
  background: var(--success);
}

.strength-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
  text-align: right;
}

.role-selector {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.role-option {
  flex: 1;
}

.role-option input[type="radio"] {
  display: none;
}

.role-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-input);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.role-option input:checked+.role-label {
  border-color: var(--brand-blue);
  background: rgba(67, 97, 238, 0.12);
  color: var(--brand-blue);
}

.role-label:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

.forgot-link {
  display: block;
  text-align: right;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  margin-top: 8px;
  margin-bottom: 24px;
  transition: var(--transition);
}

.forgot-link:hover {
  color: var(--brand-blue);
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 17px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.3px;
  cursor: pointer;
  border: none;
  transition: var(--transition-bounce);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0);
  transition: background 0.2s ease;
}

.btn:hover::after {
  background: rgba(255, 255, 255, 0.07);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow: 0 8px 24px rgba(67, 97, 238, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 12px 32px rgba(67, 97, 238, 0.45);
  transform: translateY(-1px);
}

.btn-google {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1.5px solid var(--border-input);
  margin-top: 12px;
}

.btn-google:hover {
  background: var(--bg-card-hover);
}

.btn-google img {
  width: 20px;
  height: 20px;
}

.btn-loading {
  pointer-events: none;
  opacity: 0.8;
}

.auth-divider {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  margin: 16px 0;
  position: relative;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: calc(50% - 60px);
  height: 1px;
  background: var(--border-color);
}

.auth-divider::before {
  left: 0;
}

.auth-divider::after {
  right: 0;
}

.auth-footer {
  text-align: center;
  margin-top: 28px;
  font-size: 14px;
  color: var(--text-secondary);
}

.auth-footer a {
  color: var(--brand-blue);
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
}

.auth-footer a:hover {
  color: var(--brand-violet);
}

.auth-copyright {
  text-align: center;
  margin-top: 36px;
  font-size: 12px;
  color: var(--text-muted);
}

.profile-page {
  min-height: 100vh;
  background: var(--nav-surface);
  padding-bottom: 80px;
}

.top-nav {
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 18px;
  position: sticky;
  display: flex;
  align-items: center;
  justify-content: space-between;
  top: 0;
  z-index: 100;
}

.nav-logo img {
  display: block;
  height: clamp(28px, 4.5vw, 34px);
  width: auto;
  object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
  filter: brightness(1.02) drop-shadow(0 8px 22px rgba(67, 97, 238, 0.14));
  transition: filter 250ms ease, transform 250ms ease;
}

.nav-logo:hover img {
  filter: brightness(1.12) drop-shadow(0 12px 32px rgba(67, 97, 238, 0.22));
  transform: translateY(-1px);
}

@media (prefers-reduced-motion: reduce) {
  .auth-logo img {
    animation: none !important;
    opacity: 1;
    transform: none;
    filter: brightness(1.05) drop-shadow(0 12px 34px rgba(67, 97, 238, 0.18));
  }

  .nav-logo img {
    transition: none;
  }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-icon-btn {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-size: 16px;
}

.nav-icon-btn:hover {
  color: var(--brand-blue);
  border-color: var(--brand-blue);
}

.profile-header-card {
  background: var(--nav-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 12px 0;
  position: relative;
}

.profile-cover {
  height: 120px;
  background: var(--nav-surface);
  border-radius: 0;
  margin-bottom: -45px;
  position: relative;
  overflow: hidden;
}

.profile-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: none;
}

.profile-avatar-wrap {
  margin-top: -48px;
  position: relative;
  display: inline-block;
  margin-bottom: 12px;
}

.profile-avatar {
  width: 90px;
  height: 90px;
  min-width: 90px;
  min-height: 90px;
  border-radius: var(--radius-full);
  border: 4px solid var(--nav-surface);
  object-fit: cover;
  object-position: center center;
  display: block;
  background: var(--bg-card);
  box-shadow: none;
}

.avatar-edit-btn {
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--brand-blue);
  border: 2px solid var(--nav-surface);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 11px;
  transition: var(--transition);
}

.avatar-edit-btn:hover {
  background: var(--brand-violet);
  transform: scale(1.1);
}

.profile-name {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 2px;
}

.profile-pronoun {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.profile-school {
  font-size: 18px;
  color: var(--text-secondary);
  margin-top: 4px;
  font-weight: 600;
}

.profile-username {
  font-size: 16px;
  color: var(--text-muted);
  margin-top: 2px;
  font-weight: 500;
}

.profile-level {
  font-size: 17px;
  color: var(--text-muted);
}

.profile-stats {
  display: flex;
  gap: 24px;
  margin: 14px 0 0;
  padding-bottom: 16px;
}

.stat {
  font-size: 17px;
  color: var(--text-muted);
}

.stat strong {
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 700;
}

.profile-actions {
  display: flex;
  gap: 10px;
  margin: 16px 0 0;
  padding-bottom: 0;
}

.profile-btn {
  flex: 1;
  padding: 12px 16px;
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: var(--transition-bounce);
  text-align: center;
}

.profile-btn-primary {
  background: rgba(67, 97, 238, 0.15);
  color: var(--brand-blue);
  border: 1.5px solid rgba(67, 97, 238, 0.3);
}

.profile-btn-primary:hover {
  background: rgba(67, 97, 238, 0.25);
}

.profile-btn-icon {
  flex: 0 0 48px;
  width: 48px;
  padding: 12px;
  background: var(--bg-input);
  border: 1.5px solid var(--border-input);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.profile-btn-icon:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

.profile-tabs {
  display: flex;
  background: var(--nav-surface);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  scrollbar-width: none;
}

.profile-tabs::-webkit-scrollbar {
  display: none;
}

.tab-item {
  flex: 1;
  min-width: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 14px 8px;
  font-size: 24px;
  color: var(--tab-inactive);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  border-radius: 0;
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
}

.tab-item.active {
  color: var(--brand-blue);
  border-bottom-color: var(--brand-blue);
}

.tab-item:hover {
  color: var(--brand-blue);
}

@media (max-width: 768px) {
  .tab-item {
    font-size: 20px;
    padding: 12px 6px;
  }

  .profile-btn-icon {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .tab-item {
    font-size: 18px;
    padding: 10px 4px;
    min-width: 56px;
  }

  .profile-btn-icon {
    font-size: 14px;
    width: 44px;
    flex: 0 0 44px;
  }
}

.profile-content {
  padding: 20px;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.post-placeholder {
  aspect-ratio: 1;
  background: var(--nav-hover);
  border-radius: 0;
  border: none;
}

@media (min-width: 1024px) and (orientation: landscape) {

  .profile-header-card,
  .profile-tabs,
  .profile-content {
    max-width: 1000px;
    margin: 0 auto;
  }
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-sheet {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  width: fit-content;
  min-width: 400px;
  max-width: min(90vw, 800px);
  height: auto;
  min-height: 200px;
  max-height: min(90vh, 800px);
  padding: 24px 20px 40px;
  transform: scale(0.95);
  transition: transform 0.35s cubic-bezier(0.34, 1.1, 0.64, 1);
  overflow-x: hidden;
  overflow-y: auto;
}

.modal-overlay.active .modal-sheet {
  transform: scale(1);
}

.modal-handle {
  width: 40px;
  height: 4px;
  background: var(--border-color);
  border-radius: 99px;
  margin: 0 auto 24px;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 24px;
}

.contribute-option {
  width: 100%;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.contribute-option:hover {
  background: var(--bg-card-hover);
  border-color: var(--brand-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

#filePreview {
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#filePreview video {
  width: 100%;
  max-height: 300px;
  object-fit: contain;
}

.contribute-two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.preview-column {
  display: flex;
  flex-direction: column;
}

.form-column {
  display: flex;
  flex-direction: column;
}

@media (max-width: 768px) {
  .contribute-two-column {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .preview-column {
    order: 2;
  }

  .form-column {
    order: 1;
  }
}

#fileInput {
  transition: all 0.2s ease;
}

#fileInput:hover {
  border-color: var(--brand-blue);
  background: rgba(67, 97, 238, 0.05);
}

#fileInput:focus {
  outline: none;
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 10px 20px 14px;
  z-index: 100;
}

.bottom-nav .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-md);
  padding: 8px 16px;
  transition: var(--transition);
  background: none;
  border: none;
  font-size: 22px;
  text-decoration: none;
}

.bottom-nav .nav-item:hover,
.bottom-nav .nav-item.active {
  color: var(--brand-blue);
}

.nav-item-profile {
  background: var(--bg-card);
  border-radius: var(--radius-full);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--brand-blue);
  box-shadow: 0 4px 12px rgba(67, 97, 238, 0.3);
}

.nav-item-profile.active {
  background: var(--brand-blue);
  color: white !important;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 14px;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (min-width: 1024px) {
  .auth-page {
    padding: 60px 32px;
  }

  .floating-object svg {
    width: 60px;
    height: 60px;
  }

  .floating-object:nth-child(odd) svg {
    width: 55px;
    height: 55px;
  }

  .floating-object:nth-child(3n) svg {
    width: 65px;
    height: 65px;
  }
}

@media (min-width: 640px) {
  .auth-page {
    padding: 40px 24px;
  }

  .profile-header-card {
    padding: 24px 28px 0;
  }

  .profile-content {
    padding: 24px 28px;
  }

  .floating-object svg {
    width: 50px;
    height: 50px;
  }

  .floating-object:nth-child(odd) svg {
    width: 45px;
    height: 45px;
  }

  .floating-object:nth-child(3n) svg {
    width: 55px;
    height: 55px;
  }
}

@media (max-width: 768px) {
  .auth-page {
    padding: 20px 16px;
  }

  .floating-object svg {
    width: 35px;
    height: 35px;
  }

  .floating-object:nth-child(odd) svg {
    width: 30px;
    height: 30px;
  }

  .floating-object:nth-child(3n) svg {
    width: 40px;
    height: 40px;
  }

  .floating-object {
    animation-duration: 8s;
  }

  .floating-objects {
    --float-y: -15px;
    --float-rot: 3deg;
  }
}

@media (max-width: 480px) {
  .auth-page {
    padding: 16px 12px;
  }

  .floating-object svg {
    width: 25px;
    height: 25px;
  }

  .floating-object:nth-child(odd) svg {
    width: 20px;
    height: 20px;
  }

  .floating-object:nth-child(3n) svg {
    width: 30px;
    height: 30px;
  }

  .floating-object {
    animation-duration: 10s;
    opacity: 0.4;
  }

  .floating-objects {
    --float-y: -10px;
    --float-rot: 2deg;
  }
}

@media (max-width: 320px) {
  .auth-page {
    padding: 12px 8px;
  }

  .floating-object svg {
    width: 20px;
    height: 20px;
  }

  .floating-object:nth-child(odd) svg {
    width: 18px;
    height: 18px;
  }

  .floating-object:nth-child(3n) svg {
    width: 22px;
    height: 22px;
  }

  .floating-object {
    animation-duration: 12s;
    opacity: 0.3;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.4s ease forwards;
}

.fade-in-delay-1 {
  animation-delay: 0.1s;
  opacity: 0;
}

.fade-in-delay-2 {
  animation-delay: 0.2s;
  opacity: 0;
}

.fade-in-delay-3 {
  animation-delay: 0.3s;
  opacity: 0;
}

.login-preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.login-preloader.show {
  opacity: 1;
  visibility: visible;
}

.login-preloader-content {
  text-align: center;
}

.login-preloader-logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
  animation: preloaderPulse 1.5s ease-in-out infinite;
}

@keyframes preloaderPulse {

  0%,
  100% {
    opacity: 0.8;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.05);
  }
}

.top-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--nav-surface);
  border-bottom: none;
  z-index: 1100;
}

.top-navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.top-navbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.topbar-toggle {
  width: 40px;
  height: 40px;
  display: none;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-primary);
  border-radius: 12px;
  cursor: pointer;
}

.topbar-toggle:hover {
  background: var(--bg-card-hover);
}

.top-navbar-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.top-navbar-wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(14px, 1.4vw, 18px);
  color: var(--text-primary);
  line-height: 1;
  white-space: nowrap;
}

.top-navbar-logo img {
  height: 34px;
  width: auto;
  max-width: min(240px, 55vw);
  display: block;
  border-radius: 12px;
}

.top-navbar-right {
  display: flex;
  align-items: center;
}

.top-navbar-action {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-primary);
  border-radius: 12px;
}

.top-navbar-action:hover {
  background: var(--nav-hover);
}

@media (min-width: 769px) {
  .top-navbar-right {
    display: none;
  }
}

.desktop-sidebar {
  --desktop-sidebar-width: 76px;
  --desktop-sidebar-expanded-width: 230px;
  --desktop-nav-icon-size: 26px;
  --desktop-nav-label-size: 15px;
  --desktop-nav-item-gap: 14px;
  --desktop-nav-item-gap-collapsed: 0px;
  --desktop-nav-item-py: 14px;
  --desktop-nav-item-px: 18px;
  --desktop-nav-item-px-collapsed: 12px;
  --desktop-nav-item-mx: 8px;
  position: fixed;
  top: 60px;
  left: 0;
  width: var(--desktop-sidebar-width);
  height: calc(100vh - 60px);
  background: var(--nav-surface);
  border-right: none;
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transform: translateX(0);
  transition: width 0.28s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease;
  box-shadow: none;
  overflow-x: hidden;
}

.desktop-sidebar:hover,
.desktop-sidebar:focus-within {
  width: var(--desktop-sidebar-expanded-width);
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.14);
}

@media (min-width: 769px) {
  .desktop-sidebar {
    display: flex;
  }
}

@media (min-width: 769px) and (max-width: 1099px) {
  .desktop-sidebar {
    --desktop-sidebar-width: 72px;
    --desktop-sidebar-expanded-width: 206px;
    --desktop-nav-label-size: 13px;
    --desktop-nav-item-gap: 10px;
    --desktop-nav-item-py: 10px;
    --desktop-nav-item-px: 12px;
    --desktop-nav-item-px-collapsed: 10px;
    --desktop-nav-item-mx: 6px;
  }
}

@media (min-width: 1100px) and (max-width: 1439px) {
  .desktop-sidebar {
    --desktop-sidebar-width: 76px;
    --desktop-sidebar-expanded-width: 230px;
    --desktop-nav-label-size: 14px;
    --desktop-nav-item-gap: 12px;
    --desktop-nav-item-py: 12px;
    --desktop-nav-item-px: 16px;
    --desktop-nav-item-px-collapsed: 11px;
    --desktop-nav-item-mx: 8px;
  }
}

@media (min-width: 1440px) {
  .desktop-sidebar {
    --desktop-sidebar-width: 82px;
    --desktop-sidebar-expanded-width: 280px;
    --desktop-nav-label-size: 16px;
    --desktop-nav-item-gap: 16px;
    --desktop-nav-item-py: 15px;
    --desktop-nav-item-px: 20px;
    --desktop-nav-item-px-collapsed: 12px;
    --desktop-nav-item-mx: 10px;
  }
}

.sidebar-nav {
  flex: 1;
  padding: 10px 0;
  overflow-y: auto;
}

.sidebar-nav .nav-item,
.sidebar-bottom .nav-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: var(--desktop-nav-item-gap-collapsed);
  padding: var(--desktop-nav-item-py) var(--desktop-nav-item-px-collapsed);
  margin: 2px var(--desktop-nav-item-mx);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--desktop-nav-label-size);
  transition: background-color 0.15s ease, color 0.15s ease, gap 0.2s ease, padding 0.2s ease;
  position: relative;
  border-radius: var(--radius-md);
}

.desktop-sidebar:hover .sidebar-nav .nav-item,
.desktop-sidebar:focus-within .sidebar-nav .nav-item,
.desktop-sidebar:hover .sidebar-bottom .nav-item,
.desktop-sidebar:focus-within .sidebar-bottom .nav-item {
  gap: var(--desktop-nav-item-gap);
  padding: var(--desktop-nav-item-py) var(--desktop-nav-item-px);
}

.sidebar-nav .nav-item:hover,
.sidebar-bottom .nav-item:hover {
  background: var(--nav-hover);
  color: var(--text-primary);
}

.sidebar-nav .nav-item.active,
.sidebar-bottom .nav-item.active {
  color: var(--text-primary);
  background: var(--nav-active);
}

.sidebar-nav .nav-item.active:hover,
.sidebar-bottom .nav-item.active:hover {
  background: var(--nav-active);
}

.sidebar-nav .nav-item svg {
  flex-shrink: 0;
  width: var(--desktop-nav-icon-size);
  height: var(--desktop-nav-icon-size);
}

.sidebar-nav .nav-item span,
.sidebar-bottom .nav-item span {
  flex: 0 1 auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 0;
  opacity: 0;
  transform: translateX(-6px);
  transition: max-width 0.2s ease, opacity 0.16s ease, transform 0.2s ease;
  pointer-events: none;
}

.desktop-sidebar:hover .sidebar-nav .nav-item span,
.desktop-sidebar:focus-within .sidebar-nav .nav-item span,
.desktop-sidebar:hover .sidebar-bottom .nav-item span,
.desktop-sidebar:focus-within .sidebar-bottom .nav-item span {
  max-width: 160px;
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.sidebar-bottom {
  padding: 10px 0;
  border-top: 1px solid var(--border-color);
}

.nav-avatar {
  width: var(--desktop-nav-icon-size);
  height: var(--desktop-nav-icon-size);
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.nav-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-actions {
  padding: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contribute-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  background: var(--brand-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition-bounce);
  box-shadow: var(--shadow-md);
}

.contribute-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.settings-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: 0;
  font-weight: 500;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  text-align: left;
}

.settings-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 70px;
  background: var(--nav-surface);
  border-top: none;
  display: none;
  align-items: center;
  justify-content: space-around;
  padding: 0 8px;
  z-index: 1100;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  gap: 0;
}

@media (min-width: 769px) and (max-width: 1023px) {
  .topbar-toggle {
    display: inline-flex;
  }
}

@media (max-width: 380px) {
  .mobile-bottom-nav {
    height: 65px;
    padding: 0 4px;
  }
}

@media (max-width: 320px) {
  .mobile-bottom-nav {
    height: 60px;
  }
}

.mobile-bottom-nav .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 8px 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 10px;
  font-weight: 600;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 12px;
  min-width: 52px;
  position: relative;
  flex: 0 0 auto;
}

.mobile-bottom-nav .nav-item::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 4px;
  height: 4px;
  background: var(--brand-blue);
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.mobile-bottom-nav .nav-item:hover {
  color: var(--text-secondary);
  background: var(--nav-hover);
  transform: translateY(-2px);
}

.mobile-bottom-nav .nav-item.active {
  color: var(--brand-blue);
  transform: translateY(-2px);
}

.mobile-bottom-nav .nav-item.active::after {
  transform: translateX(-50%) scaleX(1);
}

.mobile-bottom-nav .nav-item svg {
  width: 24px;
  height: 24px;
  transition: all 0.2s ease;
}

.mobile-bottom-nav .nav-item:hover svg {
  transform: scale(1.1);
}

.mobile-bottom-nav .nav-item.active svg {
  transform: scale(1.15);
  filter: drop-shadow(0 2px 8px rgba(67, 97, 238, 0.3));
}

.mobile-bottom-nav .nav-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--brand-blue);
}

.mobile-bottom-nav .nav-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 769px) and (max-width: 1099px) {
  .profile-page {
    max-width: calc(100vw - 72px);
    margin: 0 auto;
  }
}

@media (min-width: 1100px) and (max-width: 1439px) {
  .profile-page {
    max-width: calc(100vw - 76px);
    margin: 0 auto;
  }
}

@media (min-width: 1440px) {
  .profile-page {
    max-width: calc(100vw - 82px);
    margin: 0 auto;
  }
}

@media (min-width: 769px) {
  .main-content {
    margin-left: 0;
  }
}

@media (min-width: 1400px) {
  .main-content {
    margin-left: 0;
  }
}

@media (min-width: 1800px) {
  .main-content {
    margin-left: 0;
  }
}

@media (min-width: 1400px) {
  .main-content {
    margin-left: 0;
  }
}

@media (min-width: 1800px) {
  .main-content {
    margin-left: 0;
  }
}

@media (max-width: 768px) {
  .main-content {
    margin-left: 0;
    padding-bottom: 70px;
  }
}

@media (max-width: 380px) {
  .main-content {
    padding-bottom: 65px;
  }
}

@media (max-width: 320px) {
  .main-content {
    padding-bottom: 60px;
  }
}

@keyframes navItemSlideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.desktop-sidebar .nav-item {
  opacity: 1;
}

.desktop-sidebar .nav-item:nth-child(1) {
  animation-delay: 0.1s;
}

.desktop-sidebar .nav-item:nth-child(2) {
  animation-delay: 0.15s;
}

.desktop-sidebar .nav-item:nth-child(3) {
  animation-delay: 0.2s;
}

.desktop-sidebar .nav-item:nth-child(4) {
  animation-delay: 0.25s;
}

.mobile-bottom-nav .nav-item {
  opacity: 1;
}

.mobile-bottom-nav .nav-item:nth-child(1) {
  animation-delay: 0.05s;
}

.mobile-bottom-nav .nav-item:nth-child(2) {
  animation-delay: 0.1s;
}

.mobile-bottom-nav .nav-item:nth-child(3) {
  animation-delay: 0.15s;
}

.mobile-bottom-nav .nav-item:nth-child(4) {
  animation-delay: 0.2s;
}

.mobile-bottom-nav .nav-item:nth-child(5) {
  animation-delay: 0.25s;
}

.desktop-sidebar,
.mobile-bottom-nav,
.top-navbar {
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.nav-item:focus,
.top-navbar-logo:focus {
  outline: 2px solid var(--brand-blue);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {

  .desktop-sidebar .nav-item,
  .mobile-bottom-nav .nav-item {
    opacity: 1;
  }

  .sidebar-nav .nav-item:hover,
  .mobile-bottom-nav .nav-item:hover {
    transform: none;
  }
}

@media (max-width: 768px) {
  body {
    padding-left: 0 !important;
  }

  .desktop-sidebar {
    display: none !important;
  }

  .mobile-bottom-nav {
    display: flex !important;
  }
}

@media (min-width: 769px) {
  body {
    padding-left: 76px !important;
  }

  .desktop-sidebar {
    display: flex !important;
  }

  .mobile-bottom-nav {
    display: none !important;
  }
}

@media (min-width: 769px) and (max-width: 1099px) {
  body {
    padding-left: 72px !important;
  }
}

@media (min-width: 1100px) and (max-width: 1439px) {
  body {
    padding-left: 76px !important;
  }
}

@media (min-width: 1440px) {
  body {
    padding-left: 82px !important;
  }
}

.contribution-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contribution-list-item {
  display: grid;
  grid-template-columns: 132px 1fr auto;
  gap: 14px;
  align-items: stretch;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
}

.contribution-list-item.compact {
  grid-template-columns: 1fr auto;
}

.contribution-mini-preview {
  width: 132px;
  height: 92px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--bg-input);
}

.contribution-mini-preview iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.contribution-list-title {
  display: block;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 16px;
  text-decoration: none;
  margin-bottom: 6px;
}

.contribution-list-title:hover {
  color: var(--brand-blue);
}

.contribution-list-meta {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 4px;
}

.contribution-list-stats {
  color: var(--text-muted);
  font-size: 12px;
}

.contribution-list-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.upload-progress-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1200;
  display: none;
  align-items: center;
  justify-content: center;
}

.upload-progress-modal.active {
  display: flex;
}

.upload-progress-card {
  width: min(92vw, 420px);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  padding: 22px;
  text-align: center;
}

.upload-book-anim {
  width: 100px;
  height: 72px;
  margin: 8px auto 14px;
  position: relative;
}

.upload-book {
  width: 100%;
  height: 100%;
  border-radius: 8px;
  border: 2px solid var(--brand-blue);
  background: linear-gradient(140deg, rgba(67, 97, 238, 0.18), rgba(67, 97, 238, 0.06));
  transform-origin: left center;
  animation: bookOpen 1.15s ease-in-out infinite alternate;
}

.upload-book.success {
  animation: none;
  transform: rotateY(0deg);
}

.upload-pen {
  position: absolute;
  width: 52px;
  height: 6px;
  right: -12px;
  bottom: 12px;
  background: var(--brand-pink);
  border-radius: 999px;
  transform: rotate(-18deg);
  opacity: 0;
}

.upload-pen.success {
  opacity: 1;
  transition: opacity 0.25s ease;
}

.upload-progress-title {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.upload-progress-text {
  font-size: 14px;
  color: var(--text-secondary);
}

@keyframes bookOpen {
  0% {
    transform: perspective(180px) rotateY(0deg);
  }

  100% {
    transform: perspective(180px) rotateY(-36deg);
  }
}

@media (max-width: 768px) {
  .contribution-list-item {
    grid-template-columns: 1fr;
  }

  .contribution-mini-preview {
    width: 100%;
    height: 180px;
  }

  .contribution-list-actions {
    justify-content: flex-end;
  }
}

.profile-page-modern {
  max-width: 980px;
  margin: 0 auto;
  padding-bottom: 32px;
}

.profile-header-modern {
  border: 1px solid var(--border-color);
  border-radius: 18px;
  overflow: hidden;
  margin: 20px;
  background: linear-gradient(180deg, var(--bg-card), var(--bg-secondary));
}

.profile-header-modern .profile-cover {
  height: 138px;
  background: linear-gradient(120deg, rgba(67, 97, 238, 0.2), rgba(76, 201, 240, 0.16), rgba(45, 212, 191, 0.15));
}

.profile-header-inner {
  padding: 0 18px 0 18px;
}

.profile-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.profile-identity {
  padding-bottom: 6px;
}

.profile-stats-modern {
  border-top: 1px solid var(--border-color);
  margin: 12px 0 0;
  padding: 14px 18px;
  gap: 14px;
}

.profile-stats-modern .stat {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px 12px;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.profile-stats-modern .stat span {
  color: var(--text-secondary);
  font-size: 13px;
}

.profile-content-modern {
  padding: 16px 20px 0;
}

.contribution-list-modern {
  gap: 12px;
}

.contribution-card-modern {
  border-radius: 14px;
  border: 1px solid var(--border-color);
  background: linear-gradient(180deg, var(--bg-card), var(--bg-secondary));
}

.contribution-card-modern .contribution-list-title {
  line-height: 1.4;
  word-break: break-word;
}

.contribution-card-modern .contribution-list-meta,
.contribution-card-modern .contribution-list-stats {
  line-height: 1.45;
  word-break: break-word;
}

.profile-about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.profile-about-card {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--bg-card);
  padding: 12px 14px;
}

.profile-about-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
}

.profile-about-value {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
}

.contribution-preview-page {
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: 20px;
}

.contribution-breadcrumb {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--text-secondary);
  font-size: 13px;
}

.contribution-breadcrumb a {
  color: var(--brand-blue);
  text-decoration: none;
}

.contribution-preview-shell {
  background: linear-gradient(180deg, var(--bg-card), var(--bg-secondary));
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 18px;
}

.contribution-preview-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: flex-start;
}

.contribution-preview-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.2;
  margin-bottom: 8px;
  word-break: break-word;
}

.contribution-preview-meta {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.45;
  word-break: break-word;
}

.contribution-preview-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.contribution-preview-frame-wrap {
  margin-top: 18px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-input);
  min-height: 56vh;
}

.contribution-preview-frame {
  width: 100%;
  height: min(72vh, 920px);
  border: 0;
}

.contribution-preview-empty {
  min-height: 56vh;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--text-muted);
  gap: 10px;
  padding: 24px;
}

.contribution-preview-empty-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.contribution-preview-description {
  margin-top: 16px;
  color: var(--text-secondary);
  line-height: 1.65;
  word-break: break-word;
}

.contribution-preview-foot {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 13px;
}

.contribution-preview-foot a {
  color: var(--brand-blue);
  text-decoration: none;
}

.upload-progress-card {
  position: relative;
  overflow: hidden;
}

.upload-progress-card.uploading .upload-book {
  animation: bookOpen 1.15s ease-in-out infinite alternate;
}

.upload-progress-card.uploading .upload-pen {
  opacity: 1;
  animation: penWrite 1.2s ease-in-out infinite;
}

.upload-writing-line {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 10px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--brand-blue), transparent);
  opacity: 0;
}

.upload-progress-card.uploading .upload-writing-line {
  opacity: 0.95;
  animation: writingScan 1.4s linear infinite;
}

.upload-progress-card.success .upload-book {
  animation: none;
  transform: perspective(180px) rotateY(0deg) scale(0.97);
}

.upload-progress-card.success .upload-pen {
  animation: none;
  opacity: 0.9;
  transform: rotate(-22deg) translateX(-8px);
}

.upload-progress-card.success .upload-writing-line {
  animation: none;
  opacity: 0;
}

@keyframes penWrite {
  0% {
    transform: rotate(-18deg) translateX(0);
  }

  50% {
    transform: rotate(-15deg) translateX(-8px);
  }

  100% {
    transform: rotate(-20deg) translateX(0);
  }
}

@keyframes writingScan {
  0% {
    transform: translateX(-18px);
  }

  100% {
    transform: translateX(18px);
  }
}

@media (max-width: 768px) {
  .profile-header-modern {
    margin: 12px;
  }

  .profile-content-modern {
    padding: 12px;
  }

  .profile-about-grid {
    grid-template-columns: 1fr;
  }

  .contribution-preview-page {
    padding: 12px;
  }

  .contribution-preview-frame-wrap {
    min-height: 48vh;
  }

  .contribution-preview-frame {
    height: 64vh;
  }
}

.document-dropdown-modal {
  backdrop-filter: blur(6px);
}

.document-dropdown-content {
  width: min(560px, 95vw) !important;
  max-width: min(560px, 95vw) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 18px !important;
  background: linear-gradient(180deg, var(--bg-card), var(--bg-secondary)) !important;
}

.document-dropdown-content>div {
  padding: 22px !important;
}

.document-type-option-modal {
  border: 1px solid var(--border-color) !important;
  background: var(--bg-secondary) !important;
  border-radius: 14px !important;
  box-shadow: inset 0 0 0 1px transparent;
}

.document-type-option-modal:hover {
  border-color: var(--brand-blue) !important;
  transform: translateY(-2px) !important;
  background: var(--bg-card) !important;
}

.document-type-option-modal.selected {
  border-color: var(--brand-blue) !important;
  box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.22) !important;
}

.upload-book {
  animation: none;
}

.profile-page.profile-page-modern {
  background: transparent;
}

.profile-page-modern .profile-header-modern {
  margin: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  background: var(--bg-secondary);
  box-shadow: none;
}

.profile-page-modern .profile-cover {
  position: relative;
  height: 164px;
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(130deg, rgba(67, 97, 238, 0.26), rgba(76, 201, 240, 0.2), rgba(45, 212, 191, 0.18));
  background-size: cover;
  background-position: center;
}

.profile-page-modern .profile-cover.has-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: inherit;
  filter: blur(0px) saturate(1.05);
}

.profile-page-modern .profile-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.26));
}

.profile-cover-logo {
  position: absolute;
  right: 14px;
  top: 14px;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.3);
  display: grid;
  place-items: center;
  z-index: 2;
  backdrop-filter: blur(2px);
}

.profile-cover-logo img {
  width: 18px;
  height: 18px;
  opacity: 0.95;
}

.profile-page-modern .profile-header-inner {
  margin-top: -22px;
  padding: 0 16px;
}

.profile-page-modern .profile-avatar {
  width: 96px;
  height: 96px;
  border: 3px solid var(--bg-secondary);
  background: var(--bg-card);
}

.profile-page-modern .profile-name {
  font-size: 28px;
  line-height: 1.1;
  margin-bottom: 0;
}

.profile-page-modern .profile-username {
  margin-top: 3px;
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 600;
}

.profile-page-modern .profile-stats-modern {
  margin-top: 10px;
  padding: 12px 16px 14px;
  border-top: 1px solid var(--border-color);
}

.profile-page-modern .profile-stats-modern .stat {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-card);
  padding: 10px 13px;
}

.profile-page-modern .profile-stats-modern .stat strong {
  font-size: 18px;
}

.profile-page-modern .profile-content-modern {
  padding: 12px 16px;
}

.profile-page-modern .profile-tabs {
  margin: 0 16px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  overflow: hidden;
}

.profile-page-modern .tab-item {
  padding: 12px 10px;
}

.profile-page-modern .contribution-card-modern {
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.profile-action-btn {
  min-width: 92px;
  justify-content: center;
}

.profile-action-btn.secondary {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border: 1px solid var(--btn-secondary-border);
}

.contribution-preview-shell {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.contribution-preview-actions .contribution-action-btn {
  min-width: 122px;
  justify-content: center;
  border-radius: 10px;
}

.contribution-action-btn.secondary {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border: 1px solid var(--btn-secondary-border);
}

.contribution-preview-frame-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.upload-logo-anim {
  position: relative;
  width: 96px;
  height: 96px;
  margin: 6px auto 12px;
  display: grid;
  place-items: center;
}

.upload-logo-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid rgba(67, 97, 238, 0.24);
  border-top-color: var(--brand-blue);
  animation: logoSpin 1s linear infinite;
}

.upload-logo {
  width: 44px;
  height: 44px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.upload-success-tick {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--success);
  color: #fff;
  opacity: 0;
  transform: scale(0.7);
  transition: transform 0.24s ease, opacity 0.24s ease;
}

.upload-progress-card.uploading .upload-logo-ring {
  animation: logoSpin 1s linear infinite;
}

.upload-progress-card.success .upload-logo-ring {
  animation: none;
  border-color: rgba(34, 197, 94, 0.25);
}

.upload-progress-card.success .upload-logo {
  opacity: 0;
  transform: scale(0.78);
}

.upload-progress-card.success .upload-success-tick {
  opacity: 1;
  transform: scale(1);
}

@keyframes logoSpin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 768px) {

  .profile-page-modern .profile-header-modern,
  .profile-page-modern .profile-tabs,
  .profile-page-modern .profile-content-modern {
    margin-left: 10px;
    margin-right: 10px;
  }

  .profile-page-modern .profile-content-modern {
    padding-left: 0;
    padding-right: 0;
  }

  .contribution-preview-actions .contribution-action-btn {
    flex: 1;
    min-width: 0;
  }
}

.cover-edit-btn {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 3;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(0, 0, 0, 0.28);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
}

.cover-edit-btn:hover {
  background: rgba(0, 0, 0, 0.4);
}

.profile-page-modern .profile-avatar-wrap {
  margin-top: -48px;
}

.profile-page-modern .profile-stats-modern {
  border-top: 1px solid var(--border-color);
  gap: 26px;
}

.profile-page-modern .profile-stats-modern .stat {
  background: transparent;
  border: 0;
  padding: 0;
}

.profile-page-modern .profile-tabs {
  border: 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  margin-top: 0;
}

.profile-page-modern .profile-content-modern {
  background: transparent;
}

.upload-progress-modal {
  background: radial-gradient(circle at 50% 20%, rgba(67, 97, 238, 0.22), rgba(0, 0, 0, 0.76) 42%, rgba(0, 0, 0, 0.92) 100%);
  backdrop-filter: blur(10px) saturate(1.06);
}

.upload-progress-card {
  width: min(92vw, 420px);
  padding: 24px 22px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--bg-card), var(--bg-secondary));
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
}

.upload-progress-title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.upload-progress-text {
  color: var(--text-secondary);
}

.upload-logo-anim {
  position: relative;
  width: 108px;
  height: 108px;
  margin: 8px auto 14px;
  display: grid;
  place-items: center;
}

.upload-logo-anim::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(67, 97, 238, 0.32), rgba(67, 97, 238, 0.08) 60%, transparent 70%);
  animation: pulseHalo 1.8s ease-in-out infinite;
}

.upload-logo-ring {
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.14);
  border-top-color: #89a4ff;
  border-right-color: var(--brand-blue);
  animation: logoSpin 1s linear infinite;
  box-shadow: 0 0 20px rgba(67, 97, 238, 0.2);
}

.upload-logo {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 8px 16px rgba(67, 97, 238, 0.35));
  transition: transform 0.25s ease, opacity 0.25s ease, filter 0.25s ease;
}

.upload-success-tick {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #17d879, #0fa862);
  box-shadow: 0 12px 26px rgba(16, 217, 130, 0.38);
}

.upload-progress-card.success .upload-logo-ring {
  animation: none;
  border-color: rgba(16, 216, 121, 0.42);
  box-shadow: 0 0 24px rgba(16, 216, 121, 0.28);
}

.upload-progress-card.success .upload-logo {
  opacity: 0;
  transform: scale(0.78);
  filter: blur(1px);
}

@keyframes pulseHalo {

  0%,
  100% {
    transform: scale(0.95);
    opacity: 0.5;
  }

  50% {
    transform: scale(1.08);
    opacity: 0.95;
  }
}

[data-theme="dark"] .upload-progress-card {
  background: linear-gradient(180deg, #121212, #090909);
  border-color: rgba(255, 255, 255, 0.16);
}

.contribution-preview-actions {
  display: flex;
  gap: 8px;
  flex-wrap: nowrap;
  align-items: center;
}

.contribution-preview-actions .contribution-action-btn {
  min-width: 122px;
  justify-content: center;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex: 0 0 auto;
}

@media (max-width: 768px) {
  .contribution-preview-actions {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .contribution-preview-actions .contribution-action-btn {
    flex: 0 0 auto;
  }
}

@media (max-width: 768px) {
  .main-content {
    padding-left: 0;
    padding-right: 0;
  }

  .profile-page-modern {
    width: 100%;
    max-width: 100%;
    margin: 0;
    overflow-x: hidden;
  }

  .profile-page-modern,
  .profile-page-modern * {
    box-sizing: border-box;
  }

  .profile-page-modern .profile-header-modern,
  .profile-page-modern .profile-tabs,
  .profile-page-modern .profile-content-modern {
    margin-left: 8px;
    margin-right: 8px;
    max-width: calc(100vw - 16px);
  }

  .profile-page-modern .profile-content-modern {
    padding-top: 10px;
    padding-bottom: 0;
    padding-left: 0;
    padding-right: 0;
  }

  .profile-page-modern .profile-cover {
    height: 168px;
  }

  .profile-page-modern .profile-avatar {
    width: 92px;
    height: 92px;
  }

  .profile-page-modern .profile-name {
    font-size: 24px;
  }

  .profile-page-modern .profile-stats-modern {
    flex-wrap: wrap;
    gap: 14px;
  }

  .profile-page-modern .contribution-list-item,
  .profile-page-modern .contribution-list-item.compact {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .profile-page-modern .contribution-mini-preview {
    width: 100%;
    height: 170px;
  }

  .profile-page-modern .contribution-list-meta,
  .profile-page-modern .contribution-list-stats,
  .profile-page-modern .contribution-list-title {
    word-break: break-word;
    overflow-wrap: anywhere;
  }

  .profile-page-modern .contribution-list-actions {
    justify-content: flex-start;
    flex-wrap: wrap;
    width: 100%;
  }
}

@media (max-width: 480px) {

  .profile-page-modern .profile-header-modern,
  .profile-page-modern .profile-tabs,
  .profile-page-modern .profile-content-modern {
    margin-left: 6px;
    margin-right: 6px;
    max-width: calc(100vw - 12px);
  }

  .profile-page-modern .profile-cover {
    height: 154px;
  }

  .profile-page-modern .profile-avatar {
    width: 84px;
    height: 84px;
  }

  .profile-page-modern .profile-name {
    font-size: 21px;
  }

  .profile-page-modern .profile-stats-modern .stat {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .contribution-preview-actions {
    width: 100%;
    gap: 8px;
    overflow: visible !important;
  }

  .contribution-preview-actions .contribution-action-btn {
    flex: 1 1 0;
    min-width: 0;
    max-width: none;
    padding-left: 10px;
    padding-right: 10px;
  }
}

.user-search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 74px 14px 14px;
}

.user-search-overlay.active {
  display: flex;
}

.user-search-panel {
  width: min(620px, 96vw);
  max-height: calc(100vh - 92px);
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.user-search-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
}

.user-search-header h3 {
  font-size: 16px;
}

.user-search-close {
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
}

.user-search-input-wrap {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
}

.user-search-results {
  overflow-y: auto;
  padding: 8px;
}

.user-search-item {
  display: flex;
  gap: 10px;
  align-items: center;
  text-decoration: none;
  color: inherit;
  padding: 10px;
  border-radius: 10px;
}

.user-search-item:hover {
  background: var(--bg-input);
}

.user-search-item img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
}

.user-search-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.user-search-meta strong,
.user-search-meta span,
.user-search-meta p {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-search-meta strong {
  color: var(--text-primary);
  font-size: 14px;
}

.user-search-meta span {
  color: var(--text-secondary);
  font-size: 13px;
}

.user-search-meta p {
  color: var(--text-muted);
  font-size: 12px;
}

.user-search-hint {
  color: var(--text-muted);
  padding: 12px;
  text-align: center;
}

.mobile-search-trigger {
  display: none;
  position: sticky;
  top: 60px;
  z-index: 20;
  margin: 8px 10px 0;
}

.mobile-search-trigger button {
  width: 100%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  border-radius: 10px;
  padding: 10px 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.profile-social-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 0 16px 16px;
}

.profile-social-actions form {
  display: inline-flex;
}

.messages-shell {
  max-width: 1120px;
  margin: 18px auto 24px;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  background: var(--bg-secondary);
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: calc(100vh - 130px);
  overflow: hidden;
}

.messages-sidebar {
  border-right: 1px solid var(--border-color);
  padding: 14px;
}

.messages-sidebar h2 {
  margin-bottom: 12px;
  font-size: 22px;
}

.thread-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.thread-item {
  display: flex;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 10px;
}

.thread-item.active,
.thread-item:hover {
  border-color: var(--brand-blue);
  background: var(--bg-card);
}

.thread-item img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}

.thread-item p {
  color: var(--text-secondary);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}

.messages-chat {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.chat-header {
  display: flex;
  gap: 10px;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding: 12px 14px;
  background: var(--bg-card);
}

.chat-header img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
}

.chat-header p {
  color: var(--text-secondary);
  font-size: 13px;
}

.chat-messages {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  overflow-y: auto;
}

.chat-bubble {
  max-width: 72%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 10px;
}

.chat-bubble.mine {
  align-self: flex-end;
  background: rgba(67, 97, 238, 0.16);
  border-color: rgba(67, 97, 238, 0.5);
}

.chat-bubble small {
  color: var(--text-muted);
  font-size: 11px;
}

.chat-form {
  border-top: 1px solid var(--border-color);
  padding: 10px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.messages-placeholder,
.messages-empty {
  color: var(--text-muted);
}

.messages-placeholder {
  margin: auto;
}

@media (max-width: 900px) {
  .messages-shell {
    grid-template-columns: 1fr;
  }

  .messages-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border-color);
  }

  .thread-item p {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .mobile-search-trigger {
    display: block;
  }

  .user-search-overlay {
    padding-top: 68px;
  }

  .profile-social-actions {
    padding-bottom: 12px;
  }
}

.contribution-file-icon {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.4px;
  color: var(--text-primary);
  background: linear-gradient(180deg, var(--bg-card), var(--bg-secondary));
}

.contribution-file-icon.pdf {
  color: #e63946;
}

.contribution-file-icon.pptx,
.contribution-file-icon.ppt {
  color: #f97316;
}

.contribution-file-icon.doc,
.contribution-file-icon.docx {
  color: #2563eb;
}

.contribution-file-icon.video {
  color: #e63946;
  /* purple for video */
}

.contribution-file-icon span {
  line-height: 1;
}

.profile-page-modern {
  max-width: 980px;
}

.profile-page-modern .profile-header-modern {
  margin: 8px 10px 14px;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  overflow: visible;
}

.profile-page-modern .profile-cover {
  height: 240px !important;
  border-radius: 26px;
  border: 0 !important;
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.28);
  overflow: hidden;
}

.profile-page-modern .profile-cover::after {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.46));
}

.profile-page-modern .profile-header-inner {
  margin-top: -68px !important;
  padding: 0 8px;
}

.profile-page-modern .profile-avatar-wrap {
  margin-top: 0 !important;
  width: 136px;
  height: 136px;
  flex-shrink: 0;
}

.profile-page-modern .profile-avatar {
  width: 136px !important;
  height: 136px !important;
  min-width: 136px;
  min-height: 136px;
  border-radius: 50%;
  border: 6px solid var(--bg-primary) !important;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  object-fit: cover !important;
  object-position: center center;
  display: block;
  background: var(--bg-card);
}

.profile-page-modern .profile-identity {
  padding: 8px 10px 0;
}

.profile-page-modern .profile-name {
  font-size: clamp(28px, 4vw, 38px) !important;
}

.profile-page-modern .profile-username,
.profile-page-modern .profile-school,
.profile-page-modern .profile-level {
  font-size: 15px;
}

.profile-page-modern .profile-stats-modern {
  border-top: 0 !important;
  padding: 8px 10px 6px !important;
  margin: 0;
  gap: 18px;
}

.profile-page-modern .profile-stats-modern .stat,
.profile-page-modern .profile-tabs,
.profile-page-modern .contribution-card-modern,
.profile-page-modern .profile-about-card {
  border: 0 !important;
  box-shadow: none !important;
}

.profile-page-modern .profile-tabs {
  margin: 4px 12px 10px !important;
  background: transparent !important;
  border-top: 0 !important;
  border-bottom: 0 !important;
  display: flex;
  gap: 8px;
}

.profile-page-modern .tab-item {
  border-radius: 999px;
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 0;
}

.profile-page-modern .tab-item.active {
  background: rgba(67, 97, 238, 0.2);
  color: var(--text-primary);
}

.profile-page-modern .profile-content-modern {
  padding: 0 12px !important;
  background: transparent;
}

.profile-page-modern .contribution-card-modern {
  background: var(--bg-card);
  border-radius: 16px;
}

.profile-page-modern .profile-about-card {
  background: var(--bg-card);
  border-radius: 14px;
}

.profile-social-actions {
  padding: 8px 10px 2px !important;
  gap: 8px;
}

.profile-social-actions .btn {
  border: 0 !important;
  border-radius: 999px;
  min-height: 40px;
  padding: 0 16px;
}

.profile-social-actions .btn.secondary {
  background: rgba(255, 255, 255, 0.12);
}

@media (max-width: 768px) {
  .profile-page-modern .profile-cover {
    height: 188px !important;
    border-radius: 18px;
  }

  .profile-page-modern .profile-header-inner {
    margin-top: -50px !important;
  }

  .profile-page-modern .profile-avatar {
    width: 100px !important;
    height: 100px !important;
    border-width: 4px !important;
  }

  .profile-page-modern .profile-name {
    font-size: 24px !important;
  }
}

.profile-social-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: nowrap;
}

.profile-social-actions-main {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1;
}

.profile-social-actions-main form,
.profile-social-actions-message {
  display: inline-flex;
}

.profile-social-actions-main .profile-action-btn {
  min-width: 108px;
}

.profile-action-icon-btn {
  width: 38px;
  height: 38px;
  min-width: 38px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--btn-secondary-border) !important;
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.profile-action-icon-btn:hover {
  border-color: var(--brand-blue) !important;
  color: var(--brand-blue);
}

@media (max-width: 640px) {
  .profile-social-actions {
    align-items: stretch;
  }

  .profile-social-actions-main .profile-action-btn {
    min-width: 108px;
  }
}

.relationship-state-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
  color: var(--text-secondary);
  background: rgba(67, 97, 238, 0.14);
  margin-bottom: 8px;
}

.profile-social-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.profile-social-actions-main {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
}

.profile-social-actions-main form,
.profile-social-actions-message {
  display: inline-flex;
}

.profile-social-actions-main .profile-action-btn {
  min-width: 128px;
}

@media (max-width: 640px) {
  .profile-social-actions-main .profile-action-btn {
    min-width: 110px;
  }
}

.upload-progress-modal {
  left: 0 !important;
  right: 0 !important;
  width: 100vw;
  max-width: 100vw;
  margin: 0 !important;
}

.upload-progress-card {
  margin-left: auto;
  margin-right: auto;
}

.messages-fullscreen-body {
  padding-left: 0 !important;
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
}

.messages-fullscreen {
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.msg-topbar {
  height: 58px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-secondary);
}

.msg-topbar h1 {
  font-size: 20px;
}

.msg-topbar-spacer {
  flex: 1;
}

.msg-platform-back {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  font-weight: 600;
  font-size: 13px;
}

.msg-shell {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 340px 1fr;
}

.msg-sidebar {
  border-right: 1px solid var(--border-color);
  background: var(--bg-secondary);
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 12px;
  gap: 12px;
}

.msg-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.msg-tab {
  text-decoration: none;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  border-radius: 10px;
  padding: 10px 8px;
}

.msg-tab.active {
  color: #fff;
  border-color: #4361EE;
  background: linear-gradient(135deg, #4361EE 0%, #5B52D9 100%);
}

.msg-list {
  overflow-y: auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg-list-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  border-radius: 12px;
  padding: 10px;
}

.msg-list-item.active,
.msg-list-item:hover {
  border-color: var(--brand-blue);
  background: var(--bg-input);
}

.msg-list-item img,
.msg-room-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.msg-room-avatar {
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #4361EE 0%, #7B5EA7 100%);
}

.msg-room-avatar.large {
  width: 40px;
  height: 40px;
}

.msg-list-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.msg-list-content strong,
.msg-list-content p,
.msg-list-content small {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.msg-list-content p,
.msg-list-content small {
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-chat {
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
}

.msg-chat-header {
  border-bottom: 1px solid var(--border-color);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-secondary);
}

.msg-chat-header img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.msg-chat-header p,
.msg-header-empty {
  color: var(--text-secondary);
  font-size: 13px;
}

.msg-mobile-back {
  display: none;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 700;
}

.msg-chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg-primary);
}

.msg-bubble {
  max-width: min(78%, 720px);
  border-radius: 24px 24px 24px 4px;
  border: none;
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(180%);
  padding: 16px 20px;
  align-self: flex-start;
  position: relative;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.15),
    0 4px 16px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  border: 1px solid var(--border-color);
}

.msg-bubble:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.25),
    0 8px 24px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.msg-bubble.mine {
  align-self: flex-end;
  border-radius: 24px 24px 4px 24px;
  background: rgba(67, 97, 238, 0.18);
  border: 1px solid rgba(67, 97, 238, 0.42);
  box-shadow:
    0 8px 32px rgba(67, 97, 238, 0.2),
    0 4px 16px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.msg-bubble.mine:hover {
  box-shadow:
    0 16px 48px rgba(67, 97, 238, 0.3),
    0 8px 24px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.msg-bubble::before {
  content: '';
  position: absolute;
  top: 12px;
  left: -8px;
  width: 20px;
  height: 20px;
  background: inherit;
  border-radius: 0 0 20px 0;
  transform: rotate(-45deg);
  opacity: 0.9;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.1);
}

.msg-bubble.mine::before {
  left: auto;
  right: -8px;
  border-radius: 0 20px 0 0;
  transform: rotate(45deg);
  box-shadow: -2px 2px 8px rgba(0, 0, 0, 0.1);
}

.msg-bubble::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  background: linear-gradient(135deg,
      rgba(255, 255, 255, 0.05) 0%,
      transparent 50%,
      rgba(0, 0, 0, 0.02) 100%);
  pointer-events: none;
}

.msg-bubble strong {
  font-size: 12px;
  color: var(--text-secondary);
}

.msg-bubble p {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-primary);
  font-weight: 500;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  letter-spacing: 0.01em;
}

.msg-bubble small {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 8px;
  opacity: 0.8;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.msg-composer {
  border-top: 1px solid var(--border-color);
  padding: 10px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  background: var(--bg-secondary);
}

@media (max-width: 980px) {
  .msg-shell {
    display: block;
    position: relative;
  }

  .msg-sidebar,
  .msg-chat {
    position: absolute;
    inset: 0;
  }

  .msg-chat {
    display: none;
  }

  .msg-shell.show-chat .msg-chat {
    display: flex;
  }

  .msg-shell.show-chat .msg-sidebar {
    display: none;
  }

  .msg-mobile-back {
    display: inline-flex;
  }
}

@media (max-width: 640px) {
  .msg-topbar {
    padding: 10px;
  }

  .msg-topbar h1 {
    font-size: 18px;
  }

  .msg-platform-back {
    padding: 0 10px;
    font-size: 12px;
  }

  .msg-bubble {
    max-width: 90%;
  }
}

.messages-fullscreen-body {
  padding-left: 0 !important;
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
}

.messages-fullscreen {
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.msg-topbar {
  height: 56px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  background: var(--bg-secondary);
}

.msg-topbar h1 {
  font-size: 18px;
  font-weight: 700;
}

.msg-back-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-primary);
  background: var(--bg-card);
  font-size: 18px;
  line-height: 1;
}

.msg-shell {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 260px 360px 1fr;
}

.msg-sidebar {
  min-height: 0;
  border-right: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 10px;
  overflow-y: auto;
}

.msg-sidebar-title {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.msg-tree {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg-tree-head {
  width: 100%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  cursor: pointer;
}

.msg-tree-head.active {
  border-color: var(--brand-blue);
}

.msg-tree-head .arrow {
  color: var(--text-secondary);
  width: 14px;
  text-align: center;
}

.msg-tree-items {
  display: flex;
  flex-direction: column;
  margin-top: 6px;
  gap: 4px;
  padding-left: 24px;
}

.msg-tree-items.collapsed {
  display: none;
}

.msg-tree-items a,
.msg-tree-empty {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  border-radius: 8px;
  padding: 6px 8px;
}

.msg-tree-items a:hover,
.msg-tree-items a.active {
  background: var(--bg-card);
  color: var(--text-primary);
}

.msg-list-panel {
  min-height: 0;
  border-right: 1px solid var(--border-color);
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.msg-list-header {
  height: 56px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  border-bottom: 1px solid var(--border-color);
}

.msg-list-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.msg-list {
  min-height: 0;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.msg-list-item {
  display: flex;
  gap: 10px;
  align-items: center;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  padding: 8px;
  text-decoration: none;
  color: inherit;
}

.msg-list-item:hover,
.msg-list-item.active {
  border-color: var(--brand-blue);
}

.msg-list-item img,
.msg-room-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
}

.msg-room-avatar {
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #4361EE 0%, #7B5EA7 100%);
}

.msg-room-avatar.large {
  width: 42px;
  height: 42px;
}

.msg-list-content {
  min-width: 0;
  flex: 1;
}

.msg-list-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.msg-list-content strong,
.msg-list-content p,
.msg-list-content small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.msg-list-content p,
.msg-list-content small {
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-list-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.msg-unread-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  opacity: 0.85;
  box-shadow: 0 2px 8px rgba(34, 197, 94, 0.4);
}

.msg-row {
  position: relative;
  transition: all 0.2s ease;
}

.msg-row.unread {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(67, 97, 238, 0.05) 100%);
  border-color: rgba(67, 97, 238, 0.3);
}

.msg-row.unread::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(34, 197, 94, 0.4);
  z-index: 2;
}

.msg-row:hover,
.msg-row.active {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(67, 97, 238, 0.15);
}

.msg-date-separator {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 16px 0 8px;
  padding: 0 12px;
  position: relative;
}

.msg-date-separator::before,
.msg-date-separator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
  opacity: 0.3;
}

.msg-date-separator span {
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  border: 1px solid var(--border-color);
}

.msg-row-menu {
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
}

.msg-chat {
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
}

.msg-chat-header {
  min-height: 56px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
}

.msg-chat-header img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.msg-chat-header p,
.msg-header-empty {
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-chat-actions {
  margin-left: auto;
  display: flex;
  gap: 8px;
}

.msg-chat-actions button {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
}

.msg-chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg-bubble {
  max-width: min(76%, 700px);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  padding: 8px 10px;
}

.msg-bubble.mine {
  align-self: flex-end;
  background: rgba(67, 97, 238, 0.2);
  border-color: rgba(67, 97, 238, 0.4);
}

.msg-bubble strong {
  display: block;
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-bubble p {
  margin: 2px 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.msg-bubble small {
  font-size: 11px;
  color: var(--text-muted);
}

.msg-composer {
  min-height: 56px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  display: grid;
  grid-template-columns: 36px 1fr 36px auto;
  gap: 8px;
  align-items: center;
  padding: 8px;
}

.msg-input-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
}

@media (max-width: 1023px) {
  .msg-shell {
    grid-template-columns: 72px 320px 1fr;
  }

  .msg-sidebar {
    padding: 8px 6px;
  }

  .msg-sidebar-title,
  .msg-tree-items {
    display: none;
  }

  .msg-tree-head {
    justify-content: center;
    padding: 8px 0;
  }

  .msg-tree-head span:not(.arrow) {
    display: none;
  }

  .msg-tree-head .arrow {
    width: auto;
    font-size: 16px;
  }
}

@media (max-width: 767px) {
  .msg-shell {
    display: block;
    position: relative;
  }

  .msg-sidebar {
    display: none;
  }

  .msg-list-panel,
  .msg-chat {
    position: absolute;
    inset: 0;
  }

  .msg-chat {
    display: none;
  }

  .msg-shell.show-chat .msg-chat {
    display: flex;
  }

  .msg-shell.show-chat .msg-list-panel {
    display: none;
  }

  .msg-bubble {
    max-width: 90%;
  }
}

.messages-fullscreen-body {
  padding-left: 0 !important;
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
}

.messages-fullscreen {
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.msg-topbar {
  height: 56px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  background: var(--bg-secondary);
}

.msg-topbar h1 {
  font-size: 18px;
  font-weight: 700;
}

.msg-back-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-primary);
  background: var(--bg-card);
  font-size: 18px;
  line-height: 1;
}

.msg-mobile-home {
  display: none;
  padding: 18px 16px;
  background: var(--bg-primary);
}

.msg-mobile-home h2 {
  margin-bottom: 12px;
  font-size: 18px;
}

.msg-mobile-home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.msg-home-card {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--bg-card);
  padding: 14px;
  text-align: center;
  display: grid;
  gap: 6px;
  cursor: pointer;
}

.msg-home-card .icon {
  font-size: 24px;
}

.msg-shell {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 260px 360px 1fr;
}

.msg-sidebar {
  min-height: 0;
  border-right: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 10px;
  overflow-y: auto;
}

.msg-sidebar-title {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.msg-tree {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg-tree-head {
  width: 100%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  cursor: pointer;
}

.msg-tree-head .arrow {
  color: var(--text-secondary);
  width: 14px;
  text-align: center;
}

.msg-tree-items {
  display: flex;
  flex-direction: column;
  margin-top: 6px;
  gap: 4px;
  padding-left: 24px;
}

.msg-tree-items.collapsed {
  display: none;
}

.msg-tree-items a,
.msg-tree-empty {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  border-radius: 8px;
  padding: 6px 8px;
}

.msg-tree-items a:hover,
.msg-tree-items a.active {
  background: var(--bg-card);
  color: var(--text-primary);
}

.msg-list-panel {
  min-height: 0;
  border-right: 1px solid var(--border-color);
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.msg-list-header {
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border-color);
}

.msg-list-header h2 {
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.msg-list-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.msg-search {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 6px 10px;
  min-width: 120px;
}

.msg-new-chat {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
}

.msg-list {
  min-height: 0;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.msg-list-item {
  display: flex;
  gap: 10px;
  align-items: center;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  padding: 8px;
  text-decoration: none;
  color: inherit;
}

.msg-list-item:hover,
.msg-list-item.active {
  border-color: var(--brand-blue);
}

.msg-list-item img,
.msg-room-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
}

.msg-room-avatar {
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #4361EE 0%, #7B5EA7 100%);
}

.msg-room-avatar.large {
  width: 42px;
  height: 42px;
}

.msg-list-content {
  min-width: 0;
  flex: 1;
}

.msg-list-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.msg-list-content strong,
.msg-list-content p,
.msg-list-content small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.msg-list-content p,
.msg-list-content small {
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-list-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.msg-unread-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  opacity: 0.85;
}

.msg-row-menu {
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
}

.msg-fab {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, #4361EE, #5B52D9);
  color: #fff;
  font-size: 26px;
  box-shadow: var(--shadow-md);
  cursor: pointer;
}

.msg-chat {
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
}

.msg-chat-header {
  min-height: 56px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
}

.msg-chat-header img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.msg-chat-header p,
.msg-header-empty {
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-chat-actions {
  margin-left: auto;
  display: flex;
  gap: 8px;
}

.msg-chat-actions button {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
}

.msg-chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg-bubble {
  max-width: min(76%, 700px);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  padding: 8px 10px;
}

.msg-bubble.mine {
  align-self: flex-end;
  background: rgba(67, 97, 238, 0.2);
  border-color: rgba(67, 97, 238, 0.4);
}

.msg-bubble strong {
  display: block;
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-bubble p {
  margin: 2px 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.msg-bubble small {
  font-size: 11px;
  color: var(--text-muted);
}

.msg-composer {
  min-height: 56px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  display: grid;
  grid-template-columns: 36px 1fr 36px auto;
  gap: 8px;
  align-items: center;
  padding: 8px;
}

.msg-input-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
}

@media (max-width: 1023px) {
  .msg-shell {
    grid-template-columns: 72px 320px 1fr;
  }

  .msg-sidebar {
    padding: 8px 6px;
  }

  .msg-sidebar-title,
  .msg-tree-items {
    display: none;
  }

  .msg-tree-head {
    justify-content: center;
    padding: 8px 0;
  }

  .msg-tree-head span:not(.arrow) {
    display: none;
  }

  .msg-tree-head .arrow {
    width: auto;
    font-size: 16px;
  }
}

@media (max-width: 767px) {
  .msg-shell {
    display: block;
    position: relative;
  }

  .msg-sidebar {
    display: none;
  }

  .msg-list-panel,
  .msg-chat {
    position: absolute;
    inset: 0;
  }

  .msg-chat {
    display: none;
  }

  .msg-fab {
    right: 12px;
    bottom: 12px;
  }

  .msg-bubble {
    max-width: 90%;
  }

  .messages-fullscreen.mobile-view-home #msgMobileHome {
    display: block;
  }

  .messages-fullscreen.mobile-view-home #msgShell {
    display: none;
  }

  .messages-fullscreen.mobile-view-list #msgMobileHome {
    display: none;
  }

  .messages-fullscreen.mobile-view-list #msgShell {
    display: block;
  }

  .messages-fullscreen.mobile-view-list #msgChat {
    display: none;
  }

  .messages-fullscreen.mobile-view-list #msgListPanel {
    display: block;
  }

  .messages-fullscreen.mobile-view-chat #msgMobileHome {
    display: none;
  }

  .messages-fullscreen.mobile-view-chat #msgShell {
    display: block;
  }

  .messages-fullscreen.mobile-view-chat #msgListPanel {
    display: none;
  }

  .messages-fullscreen.mobile-view-chat #msgChat {
    display: flex;
  }

  .msg-list-back,
  .msg-chat-back {
    display: inline-flex;
  }
}

.msg-list-back,
.msg-chat-back {
  display: none;
}

.messages-fullscreen-body {
  padding-left: 0 !important;
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
}

.messages-fullscreen {
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  position: relative;
}

@media (max-width: 768px) {

  body.messages-fullscreen-body.msg-oo.chat-open .mobile-bottom-nav,
  .msg-oo.chat-open .mobile-bottom-nav {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
  }
}

.msg-topbar {
  height: 56px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  background: var(--bg-secondary);
}

.msg-topbar h1 {
  font-size: 18px;
  font-weight: 700;
  flex: 1;
}

.msg-back-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-primary);
  background: var(--bg-card);
  font-size: 18px;
  line-height: 1;
}

.msg-icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
}

.msg-search-overlay {
  display: none;
  position: absolute;
  top: 56px;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 12px;
  z-index: 5;
}

.msg-search-overlay.open {
  display: block;
}

.msg-search-block {
  display: grid;
  gap: 8px;
}

.msg-search-wide {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-primary);
}

.msg-mobile-home {
  display: none;
  padding: 18px 16px;
  background: var(--bg-primary);
}

.msg-mobile-home h2 {
  margin-bottom: 12px;
  font-size: 18px;
}

.msg-mobile-home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.msg-home-card {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--bg-card);
  padding: 14px;
  text-align: center;
  display: grid;
  gap: 6px;
  cursor: pointer;
}

.msg-home-card .icon {
  font-size: 24px;
}

.msg-shell {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 72px 260px 6px 360px 6px 1fr;
  position: relative;
}

.msg-icon-rail {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
}

.msg-icon-rail a {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-size: 18px;
}

.msg-icon-rail a.active {
  border-color: var(--brand-blue);
}

.msg-sidebar {
  min-height: 0;
  border-right: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 10px;
  overflow-y: auto;
}

.msg-sidebar-title {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.msg-tree {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg-tree-head {
  width: 100%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  cursor: pointer;
}

.msg-tree-head .arrow {
  color: var(--text-secondary);
  width: 14px;
  text-align: center;
}

.msg-tree-items {
  display: flex;
  flex-direction: column;
  margin-top: 6px;
  gap: 4px;
  padding-left: 24px;
}

.msg-tree-items.collapsed {
  display: none;
}

.msg-tree-items a,
.msg-tree-empty {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  border-radius: 8px;
  padding: 6px 8px;
}

.msg-tree-items a:hover,
.msg-tree-items a.active {
  background: var(--bg-card);
  color: var(--text-primary);
}

.msg-divider {
  width: 6px;
  cursor: col-resize;
  background: transparent;
}

.msg-list-panel {
  min-height: 0;
  border-right: 1px solid var(--border-color);
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  position: relative;
}

.msg-list-header {
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border-color);
}

.msg-list-back {
  display: none;
}

.msg-dropdown {
  position: relative;
}

.msg-dropdown-toggle {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
}

.msg-dropdown-menu {
  position: absolute;
  top: 110%;
  left: 0;
  min-width: 210px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  display: none;
  z-index: 10;
}

.msg-dropdown-menu .msg-dropdown-title {
  padding: 10px 12px;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
}

.msg-dropdown-menu button {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 10px 12px;
  cursor: pointer;
  color: var(--text-primary);
}

.msg-dropdown-menu button:hover {
  background: var(--bg-input);
}

.msg-list-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.msg-quick-filters button {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  cursor: pointer;
}

.msg-list {
  min-height: 0;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.msg-list-item {
  display: flex;
  gap: 10px;
  align-items: center;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  padding: 8px;
  text-decoration: none;
  color: inherit;
}

.msg-list-item:hover,
.msg-list-item.active {
  border-color: var(--brand-blue);
}

.msg-list-item img,
.msg-room-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
}

.msg-room-avatar {
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #4361EE 0%, #7B5EA7 100%);
}

.msg-room-avatar.large {
  width: 42px;
  height: 42px;
}

.msg-list-content {
  min-width: 0;
  flex: 1;
}

.msg-list-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.msg-list-content strong,
.msg-list-content p,
.msg-list-content small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.msg-list-content p,
.msg-list-content small {
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-list-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.msg-unread-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  opacity: 0.85;
}

.msg-row-menu {
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
}

.msg-fab {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, #4361EE, #5B52D9);
  color: #fff;
  font-size: 22px;
  box-shadow: var(--shadow-md);
  cursor: pointer;
}

.msg-chat {
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
}

.msg-chat-header {
  min-height: 56px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
}

.msg-chat-back {
  display: none;
}

.msg-chat-header img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.msg-chat-header p,
.msg-header-empty {
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-chat-actions {
  margin-left: auto;
  display: flex;
  gap: 8px;
}

.msg-chat-actions button {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
}

.msg-tabs {
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: 6px;
  padding: 6px 10px;
}

.msg-tabs button {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}

.msg-tabs button.active {
  border-color: var(--brand-blue);
}

.msg-chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg-bubble {
  max-width: min(76%, 700px);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  padding: 8px 10px;
  position: relative;
}

.msg-bubble.mine {
  align-self: flex-end;
  background: rgba(67, 97, 238, 0.2);
  border-color: rgba(67, 97, 238, 0.4);
}

.msg-bubble strong {
  display: block;
  color: var(--text-secondary);
  font-size: 12px;
}

.msg-bubble p {
  margin: 2px 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.msg-bubble small {
  font-size: 11px;
  color: var(--text-muted);
}

.msg-bubble-actions {
  display: none;
  gap: 6px;
  margin-top: 4px;
}

.msg-bubble:hover .msg-bubble-actions {
  display: inline-flex;
}

.msg-bubble-actions button {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  border-radius: 6px;
  padding: 2px 6px;
  cursor: pointer;
}

.msg-composer {
  min-height: 56px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  display: grid;
  grid-template-columns: 36px 1fr 36px auto;
  gap: 8px;
  align-items: center;
  padding: 8px;
}

.msg-input-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
}

@media (max-width: 1023px) {
  .msg-shell {
    grid-template-columns: 0 0 0 320px 6px 1fr;
  }

  .msg-icon-rail,
  .msg-sidebar,
  #dividerLeft {
    display: none;
  }
}

@media (max-width: 767px) {
  .msg-shell {
    display: block;
    position: relative;
  }

  .msg-icon-rail,
  .msg-sidebar,
  #dividerLeft,
  #dividerRight {
    display: none;
  }

  .msg-list-panel,
  .msg-chat {
    position: absolute;
    inset: 0;
  }

  .msg-chat {
    display: none;
  }

  .msg-fab {
    right: 12px;
    bottom: 12px;
  }

  .msg-bubble {
    max-width: 90%;
  }

  .messages-fullscreen.mobile-view-home #msgMobileHome {
    display: block;
  }

  .messages-fullscreen.mobile-view-home #msgShell {
    display: none;
  }

  .messages-fullscreen.mobile-view-list #msgMobileHome {
    display: none;
  }

  .messages-fullscreen.mobile-view-list #msgShell {
    display: block;
  }

  .messages-fullscreen.mobile-view-list #msgChat {
    display: none;
  }

  .messages-fullscreen.mobile-view-list #msgListPanel {
    display: block;
  }

  .messages-fullscreen.mobile-view-chat #msgMobileHome {
    display: none;
  }

  .messages-fullscreen.mobile-view-chat #msgShell {
    display: block;
  }

  .messages-fullscreen.mobile-view-chat #msgListPanel {
    display: none;
  }

  .messages-fullscreen.mobile-view-chat #msgChat {
    display: flex;
  }

  .msg-list-back,
  .msg-chat-back {
    display: inline-flex;
  }
}

.resizing {
  cursor: col-resize;
  user-select: none;
}

.msg-icon-chip {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  color: var(--text-secondary);
  background: var(--bg-card);
}

.msg-home-card .msg-icon-chip {
  width: 22px;
  height: 22px;
}

#contributeModal .modal-sheet {
  width: min(800px, 92vw) !important;
  min-width: 0 !important;
  max-width: min(800px, 92vw) !important;
  max-height: 92vh !important;
  padding: 18px !important;
}

#contributeModal .contribute-two-column {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  gap: 18px !important;
  align-items: start !important;
}

#contributeModal .education-class-container {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  gap: 14px !important;
}

#contributeModal #filePreview {
  min-height: 360px !important;
  aspect-ratio: auto !important;
}

@media (max-width: 980px) {
  #contributeModal .modal-sheet {
    width: min(760px, calc(100vw - 18px)) !important;
    max-width: min(760px, calc(100vw - 18px)) !important;
    max-height: 95vh !important;
  }

  #contributeModal .contribute-two-column {
    grid-template-columns: 1fr !important;
  }

  #contributeModal .preview-column,
  #contributeModal .form-column {
    width: 100% !important;
  }

  #contributeModal .education-class-container {
    grid-template-columns: 1fr !important;
  }

  #contributeModal #filePreview {
    min-height: 250px !important;
  }
}

.contribution-preview-title-wrap {
  min-width: 0;
  flex: 1 1 320px;
}

.contribution-preview-actions {
  margin-left: auto;
  max-width: 100%;
  flex-wrap: wrap !important;
  justify-content: flex-end;
}

.contribution-preview-actions .contribution-action-btn {
  max-width: 100%;
}

.profile-page-modern .contribution-list-actions,
.profile-page-modern .contribution-list-actions .profile-action-btn {
  flex-wrap: wrap;
}

@media (min-width: 1024px) {
  .profile-page-modern .contribution-list-item {
    grid-template-columns: 150px 1fr auto;
  }

  .profile-page-modern .contribution-list-actions {
    justify-content: flex-end;
    align-content: center;
  }
}

@media (max-width: 768px) {
  .contribution-preview-actions {
    width: 100%;
    justify-content: stretch;
  }

  .contribution-preview-actions .contribution-action-btn {
    flex: 1 1 0;
  }
}

#contributeModal .modal-sheet {
  width: min(700px, 92vw) !important;
  max-width: min(700px, 92vw) !important;
  min-width: 0 !important;
  padding: 16px !important;
  position: relative;
  overflow: hidden;
}

#contributeModal .document-dropdown-modal {
  position: absolute !important;
  inset: 0 !important;
  z-index: 20 !important;
  background: rgba(0, 0, 0, 0.55) !important;
  backdrop-filter: blur(3px);
  align-items: center !important;
  justify-content: center !important;
  padding: 12px !important;
}

#contributeModal .document-dropdown-content {
  width: min(520px, calc(100% - 12px)) !important;
  max-width: min(520px, calc(100% - 12px)) !important;
  max-height: calc(100% - 12px) !important;
  overflow-y: auto !important;
}

#contributeModal .contribute-two-column {
  grid-template-columns: 1fr !important;
  gap: 14px !important;
}

#contributeModal #filePreview {
  min-height: 220px !important;
}

@media (min-width: 1024px) {
  #contributeModal .modal-sheet {
    width: min(760px, 88vw) !important;
    max-width: min(760px, 88vw) !important;
  }

  #contributeModal .contribute-two-column {
    grid-template-columns: minmax(250px, 0.95fr) minmax(0, 1.05fr) !important;
  }
}

.contribution-icon-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.profile-icon-btn {
  width: 34px;
  height: 34px;
  min-width: 34px;
  border-radius: 10px;
  border: 1px solid var(--btn-secondary-border);
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}

.profile-icon-btn:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue);
  transform: translateY(-1px);
}

.profile-icon-btn.danger:hover {
  border-color: #ef4444;
  color: #ef4444;
}

.contribution-stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-right: 8px;
}

.contribution-edit-sheet {
  width: min(520px, 92vw) !important;
  max-width: min(520px, 92vw) !important;
  min-width: 0 !important;
}

.contribution-edit-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.contribution-edit-actions .btn {
  min-height: 36px;
  padding: 8px 12px;
}

@media (max-width: 768px) {
  .contribution-list-actions.contribution-icon-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .profile-icon-btn {
    width: 32px;
    height: 32px;
    min-width: 32px;
  }
}

.modal-overlay {
  z-index: 6000 !important;
}

#contributeModal {
  z-index: 7000 !important;
}

#contributeModal .modal-sheet {
  width: min(620px, 92vw) !important;
  max-width: min(620px, 92vw) !important;
}

@media (min-width: 1024px) {
  #contributeModal .modal-sheet {
    width: min(680px, 86vw) !important;
    max-width: min(680px, 86vw) !important;
  }
}

#documentDropdownModal {
  position: fixed !important;
  inset: 0 !important;
  z-index: 8100 !important;
  display: none;
}

#documentDropdownModal.active {
  display: flex !important;
}

#documentDropdownModal .document-dropdown-content {
  width: min(520px, 92vw) !important;
  max-width: min(520px, 92vw) !important;
}

.contribution-edit-sheet {
  width: min(560px, 94vw) !important;
  max-width: min(560px, 94vw) !important;
  padding: 16px 14px 18px !important;
}

.contribution-edit-preview {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  min-height: 200px;
  max-height: 300px;
  background: var(--bg-card);
  margin-bottom: 12px;
}

.contribution-edit-preview .contribution-preview-frame {
  width: 100%;
  height: 240px;
  border: 0;
}

.two-col-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

@media (max-width: 768px) {
  .two-col-fields {
    grid-template-columns: 1fr;
  }

  .contribution-edit-preview .contribution-preview-frame {
    height: 200px;
  }
}

.fp-intro {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary, rgba(255, 255, 255, 0.55));
  margin: 0 0 24px;
  text-align: center;
}

.fp-success-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: center;
  margin-bottom: 20px;
}

.fp-success-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(67, 97, 238, 0.12);
  border: 1.5px solid rgba(67, 97, 238, 0.3);
  margin: 0 auto 18px;
  color: #7c9bff;
}

.fp-success-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary, #fff);
  margin: 0 0 10px;
  line-height: 1.5;
}

.fp-success-text strong {
  color: #a5b4fc;
}

.fp-success-sub {
  font-size: 13px;
  color: var(--text-secondary, rgba(255, 255, 255, 0.45));
  margin: 0;
  line-height: 1.6;
}

.fp-field-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary, rgba(255, 255, 255, 0.5));
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.fp-code-input {
  text-align: center;
  font-size: 18px !important;
  font-weight: 700 !important;
  letter-spacing: 2px !important;
  font-family: 'Courier New', monospace !important;
  padding-left: 20px !important;
}

.fp-strength-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 99px;
  margin-top: 10px;
  overflow: hidden;
}

.fp-strength-fill {
  height: 100%;
  width: 0;
  border-radius: 99px;
  transition: width 0.3s ease, background 0.3s ease;
}

.fp-strength-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  margin-top: 5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-height: 16px;
  transition: color 0.3s;
}

html[data-theme="light"] .fp-success-card {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}

html[data-theme="light"] .fp-success-text {
  color: var(--text-primary);
}

html[data-theme="light"] .fp-intro {
  color: var(--text-secondary);
}

html[data-theme="light"] .fp-strength-bar {
  background: rgba(0, 0, 0, 0.08);
}

.input-icon-left {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  display: flex;
  z-index: 10;
}

.input-wrapper:has(.input-icon-left) .form-input {
  padding-left: 46px;
}

.friends-modal-sheet {
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 0;
}

.friends-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px 12px;
  flex-shrink: 0;
}

.friends-modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 6px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  transition: background 0.15s, color 0.15s;
}

.friends-modal-close:hover {
  background: var(--bg-input);
  color: var(--text-primary);
}

.friends-modal-search {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 20px 12px;
  padding: 9px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  flex-shrink: 0;
}

.friends-modal-search svg {
  color: var(--text-muted);
  flex-shrink: 0;
}

.friends-modal-search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
}

.friends-modal-search input::placeholder {
  color: var(--text-muted);
}

.friends-modal-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 12px 20px;
}

.fm-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px;
  border-radius: 12px;
  text-decoration: none;
  transition: background 0.15s;
  cursor: pointer;
}

.fm-row:hover {
  background: var(--bg-input);
}

.fm-avatar-wrap {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  flex-shrink: 0;
}

.fm-avatar {
  width: 44px;
  height: 44px;
  object-fit: cover;
  object-position: center;
  display: block;
}

.fm-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.fm-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fm-username {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
}

.fm-institution {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fm-arrow {
  color: var(--text-muted);
  flex-shrink: 0;
}

.friends-modal-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px 20px;
  color: var(--text-secondary);
  font-size: 14px;
}

.friends-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border-color);
  border-top-color: var(--brand-blue);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.friends-modal-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 14px;
}

.stat-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: inherit;
  font: inherit;
  display: contents;
}

.stat-btn strong {
  display: block;
  font-size: inherit;
  font-weight: 900;
  color: var(--text-primary);
  transition: color 0.15s;
}

.stat-btn:hover strong {
  color: var(--brand-blue);
}