:root {
  --md-primary: #004ac6;
  --md-on-primary: #ffffff;
  --md-primary-container: #dbe1ff;
  --md-on-primary-container: #00174b;
  --md-secondary: #004ac6;
  --md-on-secondary: #ffffff;
  --md-secondary-container: #dbe1ff;
  --md-on-secondary-container: #00174b;
  --md-tertiary: #56545a;
  --md-on-tertiary: #ffffff;
  --md-tertiary-container: #e5e1e8;
  --md-on-tertiary-container: #1c1b20;
  --md-error: #ba1a1a;
  --md-on-error: #ffffff;
  --md-error-container: #ffdad6;
  --md-on-error-container: #93000a;
  --md-background: #F8F9FF;
  --md-on-background: #0B1C30;
  --md-surface: #F8F9FF;
  --md-on-surface: #0B1C30;
  --md-surface-variant: #D3E4FE;
  --md-on-surface-variant: #434655;
  --md-outline: #737686;
  --md-outline-variant: #C3C6D7;
  --md-surface-dim: #CBDBF5;
  --md-surface-bright: #F8F9FF;
  --md-surface-container-lowest: #FFFFFF;
  --md-surface-container-low: #EFF4FF;
  --md-surface-container: #E5EEFF;
  --md-surface-container-high: #DCE9FF;
  --md-surface-container-highest: #D3E4FE;
  --md-inverse-surface: #213145;
  --md-inverse-on-surface: #EAF1FF;
  --md-inverse-primary: #B4C5FF;
  --md-surface-tint: #0053DB;
  --md-shadow: rgba(0,0,0,0.05);
  --md-shadow-lg: rgba(0,0,0,0.10);
  --md-radius-sm: 4px;
  --md-radius: 8px;
  --md-radius-md: 12px;
  --md-radius-lg: 16px;
  --md-radius-xl: 24px;
  --md-radius-full: 9999px;
  --md-elevation-1: 0 1px 4px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
  --md-elevation-2: 0 4px 12px rgba(0,0,0,0.10);
  --md-elevation-3: 0 8px 24px rgba(0,0,0,0.12);
  --md-font: 'Poppins', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --md-transition: 200ms cubic-bezier(0.2, 0, 0, 1);
  --md-surface-muted: #F8FAFC;
  --md-border-subtle: #E2E8F0;
}

[data-theme="dark"] {
  --md-primary: #B4C5FF;
  --md-on-primary: #002D78;
  --md-primary-container: #003EA8;
  --md-on-primary-container: #DBE1FF;
  --md-secondary: #B4C5FF;
  --md-on-secondary: #002D78;
  --md-secondary-container: #003EA8;
  --md-on-secondary-container: #DBE1FF;
  --md-tertiary: #C4C7C9;
  --md-on-tertiary: #2E3133;
  --md-tertiary-container: #444749;
  --md-on-tertiary-container: #E0E3E5;
  --md-error: #FFB4AB;
  --md-on-error: #690005;
  --md-error-container: #93000A;
  --md-on-error-container: #FFDAD6;
  --md-background: #0B1C30;
  --md-on-background: #E5EEFF;
  --md-surface: #0B1C30;
  --md-on-surface: #E5EEFF;
  --md-surface-variant: #434655;
  --md-on-surface-variant: #C3C6D7;
  --md-outline: #8D90A1;
  --md-outline-variant: #434655;
  --md-surface-dim: #0B1C30;
  --md-surface-bright: #313442;
  --md-surface-container-lowest: #060F1B;
  --md-surface-container-low: #131B2E;
  --md-surface-container: #1A2133;
  --md-surface-container-high: #252B3E;
  --md-surface-container-highest: #30364A;
  --md-inverse-surface: #E5EEFF;
  --md-inverse-on-surface: #0B1C30;
  --md-inverse-primary: #2563EB;
  --md-surface-tint: #B4C5FF;
  --md-shadow: rgba(0,0,0,0.3);
  --md-shadow-lg: rgba(0,0,0,0.4);
  --md-surface-muted: #131B2E;
  --md-border-subtle: #252B3E;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--md-font);
  background: var(--md-background);
  color: var(--md-on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font-family: inherit; }
a { color: var(--md-primary); text-decoration: none; }
a:hover { text-decoration: none; }
img { max-width: 100%; height: auto; }

/* Material 3 Typography — NEBians Vibe */
.md-display-large { font-size: 2.5rem; font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; }
.md-display-medium { font-size: 2rem; font-weight: 700; line-height: 1.2; }
.md-display-small { font-size: 1.5rem; font-weight: 700; line-height: 1.3; }
.md-headline-large { font-size: 2.5rem; font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; }
.md-headline-medium { font-size: 2rem; font-weight: 700; line-height: 1.2; }
.md-headline-small { font-size: 1.5rem; font-weight: 700; line-height: 1.3; }
.md-title-large { font-size: 1.375rem; font-weight: 700; line-height: 1.27; }
.md-title-medium { font-size: 1rem; font-weight: 600; line-height: 1.5; letter-spacing: 0.01em; }
.md-title-small { font-size: 0.875rem; font-weight: 600; line-height: 1.43; letter-spacing: 0.04em; }
.md-body-large { font-size: 1.125rem; font-weight: 400; line-height: 1.6; }
.md-body-medium { font-size: 1rem; font-weight: 400; line-height: 1.6; }
.md-body-small { font-size: 0.875rem; font-weight: 400; line-height: 1.6; }
.md-label-large { font-size: 0.875rem; font-weight: 600; line-height: 1.4; letter-spacing: 0.01em; }
.md-label-medium { font-size: 0.75rem; font-weight: 600; line-height: 1.4; letter-spacing: 0.04em; }
.md-label-small { font-size: 0.75rem; font-weight: 600; line-height: 1.4; letter-spacing: 0.04em; }

/* Material 3 Buttons */
.md-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 24px; border-radius: var(--md-radius-full); border: none;
  font-family: var(--md-font); font-size: 0.875rem; font-weight: 600;
  cursor: pointer; transition: all var(--md-transition); text-decoration: none;
  min-height: 40px; line-height: 1.43;
}
.md-btn:hover { text-decoration: none; }
.md-btn-filled {
  background: var(--md-primary); color: var(--md-on-primary);
}
.md-btn-filled:hover { filter: brightness(1.08); }
.md-btn-outlined {
  background: transparent; color: var(--md-primary);
  border: 1px solid var(--md-outline);
}
.md-btn-outlined:hover { background: color-mix(in srgb, var(--md-primary) 8%, transparent); }
.md-btn-text { background: transparent; color: var(--md-primary); }
.md-btn-text:hover { background: color-mix(in srgb, var(--md-primary) 8%, transparent); }
.md-btn-tonal {
  background: var(--md-secondary-container); color: var(--md-on-secondary-container);
}
.md-btn-tonal:hover { filter: brightness(1.04); }
.md-btn-error { background: var(--md-error); color: var(--md-on-error); }
.md-btn-icon {
  width: 40px; height: 40px; padding: 8px; border-radius: var(--md-radius-full);
  background: transparent; border: none; color: var(--md-on-surface-variant);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  transition: background var(--md-transition);
}
.md-btn-icon:hover { background: var(--md-surface-variant); }

/* Material 3 Cards */
.md-card {
  background: var(--md-surface-container-lowest);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-lg);
  overflow: hidden;
}
.md-card:hover { }
.md-card-outlined {
  background: var(--md-surface-container-lowest);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-lg);
  overflow: hidden;
}
.md-card-elevated {
  background: var(--md-surface-container-lowest);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-lg);
  box-shadow: var(--md-elevation-1);
  overflow: hidden;
}
.md-card-filled {
  background: var(--md-surface-container-highest);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-lg);
  overflow: hidden;
}

/* Material 3 Chips */
.md-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 16px; border-radius: var(--md-radius-full);
  font-size: 0.8125rem; font-weight: 500; cursor: pointer;
  transition: all var(--md-transition); border: 1px solid var(--md-outline);
  background: transparent; color: var(--md-on-surface-variant);
  font-family: var(--md-font); text-decoration: none;
}
.md-chip:hover { background: var(--md-surface-variant); text-decoration: none; }
.md-chip-active {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
  border-color: transparent;
}
.md-chip-active:hover { background: var(--md-secondary-container); }

/* Material 3 Text Fields — defined with focus fixes in app.css */
.md-label {
  display: block; font-size: 0.875rem; font-weight: 600;
  color: var(--md-on-surface-variant); margin-bottom: 8px;
}


/* Layout */
.md-container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.md-container-narrow { max-width: 800px; margin: 0 auto; padding: 0 16px; }

/* Navigation Bar */
.md-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--md-surface);
  border-bottom: none;
  padding: 0 16px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: background var(--md-transition);
}
.md-topbar-brand {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--md-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.md-topbar-brand:hover { text-decoration: none; }
.md-topbar-brand svg { width: 32px; height: 32px; }
.md-topbar-nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.md-topbar-actions { margin-left: auto; display: flex; gap: 12px; align-items: center; }

/* M3 Search Bar */
.md-search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--md-surface-container-high);
  border-radius: 28px;
  padding: 0 16px;
  height: 40px;
  width: 240px;
  transition: background var(--md-transition);
}
.md-search-bar:focus-within {
  background: var(--md-surface-container-highest);
}
.md-search-bar-icon {
  color: var(--md-on-surface-variant);
  font-size: 20px;
  flex-shrink: 0;
}
.md-search-bar input {
  border: none;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--md-on-surface);
  width: 100%;
  padding: 0;
}
.md-search-bar input::placeholder {
  color: var(--md-on-surface-variant);
}
@media (max-width: 768px) {
  .md-search-bar { width: 40px; padding: 0; justify-content: center; overflow: hidden; }
  .md-search-bar input { display: none; }
  .md-search-bar:focus-within { width: 40px; }
  .md-search-bar-icon { margin: 0; }
  .md-search-bar-mobile-link { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; text-decoration: none; color: var(--md-on-surface-variant); }
}
@media (min-width: 769px) {
  .md-search-bar-mobile-link { display: contents; }
}

/* Profile Dropdown Component */
.profile-dropdown-container {
  position: relative;
  display: inline-block;
}

/* Trigger: simple round avatar button, no pill border */
.profile-dropdown-trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  padding: 6px;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--md-transition);
  overflow: visible;
  position: relative;
}

/* Avatar circle in trigger */
.avatar-ring {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--md-primary);
  color: var(--md-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
  font-weight: 700;
  flex-shrink: 0;
  position: relative;
}
.avatar-ring img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

/* Notification dot on avatar — positioned on the trigger button, bottom-left */
.notif-dot {
  position: absolute;
  bottom: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #FF3B30;
  border: 2px solid var(--md-surface);
  z-index: 20;
  pointer-events: none;
}
[data-theme="dark"] .notif-dot {
  background: #FF453A;
  border-color: #1a1a2e;
}
.profile-dropdown-trigger:hover {
  background: var(--md-surface-variant);
}

/* Notification badge in dropdown */
.notif-popup-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  background: #FF3B30;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0 6px;
  margin-left: auto;
  line-height: 1;
  flex-shrink: 0;
}
[data-theme="dark"] .notif-popup-badge {
  background: #FF1744;
  color: #ffffff;
  box-shadow: 0 0 0 2px #1a1a2e;
}
.avatar-ring img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.profile-dropdown-notif-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--md-radius-sm);
  color: var(--md-on-surface-variant);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--md-transition), color var(--md-transition);
  text-decoration: none;
}
.profile-dropdown-notif-link:hover {
  background: var(--md-surface-variant);
  color: var(--md-on-surface);
  text-decoration: none;
}
.profile-dropdown-notif-link .material-symbols-outlined {
  font-size: 20px;
  color: var(--md-on-surface-variant);
  transition: color var(--md-transition);
}
.profile-dropdown-notif-link:hover .material-symbols-outlined {
  color: var(--md-on-surface);
}

/* Dropdown card */
.profile-dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 224px;
  background: var(--md-surface);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-md);
  box-shadow: var(--md-elevation-2);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 101;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.15s, transform 0.15s, visibility 0.15s;
}
.profile-dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* User info header at top of dropdown */
.profile-dropdown-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px 10px;
}
.profile-dropdown-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  overflow: hidden;
  flex-shrink: 0;
}
.profile-dropdown-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.profile-dropdown-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.profile-dropdown-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--md-on-surface);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.profile-dropdown-role {
  font-size: 0.75rem;
  color: var(--md-on-surface-variant);
}

/* Divider */
.profile-dropdown-menu .menu-divider {
  height: 1px;
  background: var(--md-outline-variant);
  margin: 4px 0;
}

/* Menu items */
.profile-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--md-radius-sm);
  color: var(--md-on-surface-variant);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--md-transition), color var(--md-transition);
  text-decoration: none;
}
.profile-dropdown-menu a:hover {
  background: var(--md-surface-variant);
  color: var(--md-on-surface);
  text-decoration: none;
}
.profile-dropdown-menu a .material-symbols-outlined {
  font-size: 20px;
  color: var(--md-on-surface-variant);
  transition: color var(--md-transition);
}
.profile-dropdown-menu a:hover .material-symbols-outlined {
  color: var(--md-on-surface);
}

/* Sign out item — color only on hover, NOT by default */
.profile-dropdown-menu a.menu-logout {
  color: var(--md-on-surface-variant);
}
.profile-dropdown-menu a.menu-logout .material-symbols-outlined {
  color: var(--md-on-surface-variant);
}
.profile-dropdown-menu a.menu-logout:hover {
  background: var(--md-error-container);
  color: var(--md-error);
}
.profile-dropdown-menu a.menu-logout:hover .material-symbols-outlined {
  color: var(--md-error);
}


/* Bottom Nav (pill segmented control) */
.md-bottomnav {
  display: none;
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  background: var(--md-surface-muted);
  border-radius: var(--md-radius-full);
  padding: 4px;
  border: 1px solid var(--md-border-subtle);
}
.md-bottomnav-pill {
  display: flex;
  gap: 0;
}
.md-bottomnav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 20px;
  color: var(--md-on-surface-variant);
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--md-radius-full);
  transition: background var(--md-transition), color var(--md-transition);
}
.md-bottomnav-item:hover {
  text-decoration: none;
  color: var(--md-primary);
}
.md-bottomnav-item.md-nav-active {
  background: var(--md-primary-container);
  color: var(--md-primary);
  font-weight: 700;
}

/* Nav pill (shared for topbar and bottomnav) */
.md-nav-pill {
  display: inline-flex;
  gap: 0;
  background: var(--md-surface-muted);
  border-radius: var(--md-radius-full);
  padding: 4px;
  border: 1px solid var(--md-border-subtle);
}
.md-nav-pill a {
  padding: 8px 20px;
  border-radius: var(--md-radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--md-on-surface-variant);
  text-decoration: none;
  transition: background var(--md-transition), color var(--md-transition);
}
.md-nav-pill a:hover {
  text-decoration: none;
  color: var(--md-primary);
}
.md-nav-pill a.md-nav-active {
  background: var(--md-primary-container);
  color: var(--md-primary);
  font-weight: 700;
}

/* FAB */
.md-fab {
  position: fixed; bottom: 24px; right: 24px;
  width: 56px; height: 56px; border-radius: 16px;
  background: var(--md-primary-container); color: var(--md-on-primary-container);
  border: none; cursor: pointer; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--md-elevation-3); transition: all var(--md-transition);
  z-index: 50;
}
.md-fab:hover { box-shadow: var(--md-elevation-3); transform: scale(1.05); }
.md-fab svg { width: 24px; height: 24px; }

/* Snackbar / Toast */
.md-snackbar {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--md-inverse-surface); color: var(--md-inverse-on-surface);
  padding: 14px 24px; border-radius: var(--md-radius-sm);
  box-shadow: var(--md-elevation-3); z-index: 200;
  font-size: 0.875rem; font-weight: 400;
  animation: md-snackbar-in 300ms ease;
}
@keyframes md-snackbar-in {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Dialog / Modal */
.md-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  z-index: 150; display: flex; align-items: center; justify-content: center;
  animation: md-fade-in 200ms ease;
}
.md-dialog {
  background: var(--md-surface-container-high); border-radius: var(--md-radius-xl);
  padding: 24px; max-width: 480px; width: 90%;
  box-shadow: var(--md-elevation-3); animation: md-scale-in 200ms ease;
}
@keyframes md-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes md-scale-in { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

/* Tabs */
.md-tabs { display: flex; gap: 0; border-bottom: 1px solid var(--md-outline-variant); overflow-x: auto; }
.md-tab {
  padding: 12px 20px; font-size: 0.875rem; font-weight: 600;
  color: var(--md-on-surface-variant); cursor: pointer; white-space: nowrap;
  border-bottom: 3px solid transparent; transition: all var(--md-transition);
  text-decoration: none; display: flex; align-items: center; gap: 6px;
}
.md-tab:hover { color: var(--md-primary); background: var(--md-surface-variant); text-decoration: none; }
.md-tab.md-tab-active {
  color: var(--md-primary); border-bottom-color: var(--md-primary);
}
.md-tab .material-symbols-outlined { font-size: 18px; }

/* Badge */
.md-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 20px; height: 20px; padding: 0 6px; border-radius: 10px;
  background: var(--md-error); color: var(--md-on-error);
  font-size: 0.6875rem; font-weight: 600;
}

/* Divider */
.md-divider { height: 1px; background: var(--md-outline-variant); margin: 16px 0; }

/* Progress indicator */
.md-progress {
  width: 100%; height: 4px; background: var(--md-surface-variant); border-radius: 2px; overflow: hidden;
}
.md-progress-bar {
  height: 100%; background: var(--md-primary); border-radius: 2px;
  animation: md-progress-indeterminate 1.5s ease infinite;
}
@keyframes md-progress-indeterminate {
  0% { width: 0; margin-left: 0; }
  50% { width: 70%; margin-left: 15%; }
  100% { width: 0; margin-left: 100%; }
}

/* Responsive */
@media (max-width: 768px) {
  .md-topbar-nav { display: none; }
  .md-bottomnav { display: flex; }
  .md-container { padding: 0 12px; }
  body { padding-bottom: 96px; }
  .md-hide-mobile { display: none !important; }
}
@media (min-width: 769px) {
  .md-hide-desktop { display: none !important; }
}

/* Utility */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Subject colors */
.subject-physics { --subject-color: #2563EB; }
.subject-chemistry { --subject-color: #006E1C; }
.subject-mathematics, .subject-math { --subject-color: #E8710A; }
.subject-biology { --subject-color: #9334E6; }
.subject-english { --subject-color: #D93025; }
.subject-nepali { --subject-color: #1967D2; }
.subject-computer-science { --subject-color: #185ABC; }
.subject-economics { --subject-color: #E37400; }
.subject-accountancy { --subject-color: #0D652D; }
.subject-general { --subject-color: #5F6368; }
.subject-exam-tips { --subject-color: #C5221F; }

.subject-icon {
  width: 40px; height: 40px; border-radius: var(--md-radius-md);
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--subject-color, #5F6368) 12%, transparent);
  color: var(--subject-color, #5F6368);
  flex-shrink: 0;
}
.subject-icon svg { width: 24px; height: 24px; }