:root {
  --primary: #005bb5;
  --primary-glow: rgba(0, 91, 181, 0.3);
  --secondary: #6b21a8;
  --bg-light: #f8fafc;
  --bg-light-glass: rgba(255, 255, 255, 0.85);
  --bg-card: rgba(255, 255, 255, 0.65);
  --border-glass: rgba(0, 0, 0, 0.08);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --input-bg: rgba(255, 255, 255, 0.8);
  --input-focus-bg: #ffffff;
  --input-text: #0f172a;
  --input-placeholder: #94a3b8;
  --overlay-subtle: rgba(0, 0, 0, 0.05);
  --overlay-medium: rgba(0, 0, 0, 0.1);
  --overlay-strong: rgba(0, 0, 0, 0.2);
  --surface-subtle: rgba(255, 255, 255, 0.5);
  --surface-hover: rgba(255, 255, 255, 0.8);
  --navbar-bg: #ffffff;
  --footer-bg: rgba(255, 255, 255, 0.5);
  --modal-overlay: rgba(0, 0, 0, 0.5);
  --toast-bg: #ffffff;
  --icon-green: #16a34a;
  --icon-red: #dc2626;
  --icon-amber: #d97706;
  --icon-orange: #f39c12;
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --radius-md: 12px;
  --radius-lg: 24px;
}

/* ========== DARK THEME ========== */
[data-theme="dark"] {
  --primary: #5b9cf5;
  --primary-glow: rgba(91, 156, 245, 0.3);
  --secondary: #a855f7;
  --bg-light: #0f172a;
  --bg-light-glass: rgba(15, 23, 42, 0.85);
  --bg-card: rgba(30, 41, 59, 0.65);
  --border-glass: rgba(255, 255, 255, 0.08);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --input-bg: rgba(30, 41, 59, 0.8);
  --input-focus-bg: #1e293b;
  --input-text: #e2e8f0;
  --input-placeholder: #64748b;
  --overlay-subtle: rgba(255, 255, 255, 0.03);
  --overlay-medium: rgba(255, 255, 255, 0.06);
  --overlay-strong: rgba(255, 255, 255, 0.12);
  --surface-subtle: rgba(30, 41, 59, 0.5);
  --surface-hover: rgba(30, 41, 59, 0.8);
  --navbar-bg: #1e293b;
  --footer-bg: rgba(15, 23, 42, 0.8);
  --modal-overlay: rgba(0, 0, 0, 0.7);
  --toast-bg: #1e293b;
}

[data-theme="dark"] .app-bg-texture {
  opacity: 0.15;
  filter: blur(12px) brightness(0.3);
}

[data-theme="dark"] .navbar {
  background: rgba(23, 32, 48, 0.55);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .nav-logo img {
  filter: brightness(0) invert(1); /* make dark logo white */
}

[data-theme="dark"] .btn-outline {
  background: var(--surface-subtle);
  color: var(--text-primary);
  border-color: var(--border-glass);
}

[data-theme="dark"] .btn-outline:hover {
  background: var(--surface-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .glass-card {
  background: var(--bg-card);
  border-color: var(--border-glass);
}

[data-theme="dark"] .glass-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .content-item {
  background: var(--surface-subtle);
  border-color: var(--border-glass);
}

[data-theme="dark"] .content-item:hover {
  background: var(--surface-hover);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .quiz-question-card {
  background: var(--surface-subtle);
}

[data-theme="dark"] .quiz-question-card:hover {
  background: var(--surface-hover);
}

[data-theme="dark"] .course-pill {
  background: var(--surface-subtle);
  border-color: var(--border-glass);
}

[data-theme="dark"] .course-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
}

[data-theme="dark"] .course-pill.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-color: transparent;
}

[data-theme="dark"] .footer {
  background: var(--footer-bg);
}

[data-theme="dark"] .toast {
  background: var(--toast-bg);
  border-color: var(--border-glass);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .toast.success { border-left-color: #22c55e; }
[data-theme="dark"] .toast.error { border-left-color: #ef4444; }

[data-theme="dark"] .search-bar-wrapper input {
  background: var(--input-bg);
  border-color: var(--border-glass);
  color: var(--input-text);
}

[data-theme="dark"] .search-bar-wrapper i {
  color: var(--text-secondary);
}

[data-theme="dark"] .portal-tabs {
  background: rgba(0, 0, 0, 0.2);
  border-color: var(--border-glass);
}

[data-theme="dark"] .portal-tab.active {
  background: var(--surface-hover);
  color: var(--primary);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .bug-footer-btn {
  background: var(--surface-subtle);
  border-color: var(--border-glass);
  color: var(--text-secondary);
}

[data-theme="dark"] .bug-footer-btn:hover {
  background: var(--primary);
  color: white;
  border-color: transparent;
}

[data-theme="dark"] .bug-upload-label {
  background: var(--surface-subtle);
  border-color: var(--border-glass);
  color: var(--text-secondary);
}

[data-theme="dark"] .bug-upload-label:hover {
  border-color: var(--primary);
  color: var(--primary);
}

[data-theme="dark"] .nav-mobile-panel {
  background: rgba(30, 41, 59, 0.92);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .nav-mobile-panel a {
  border-bottom-color: var(--border-glass);
  color: var(--text-secondary);
}

[data-theme="dark"] .nav-hamburger {
  border-color: var(--border-glass);
  color: var(--text-primary);
}

/* Dark mode: override inline-style patterns via class selectors */
[data-theme="dark"] textarea,
[data-theme="dark"] input,
[data-theme="dark"] select {
  background: var(--input-bg) !important;
  color: var(--input-text) !important;
  border-color: var(--border-glass) !important;
}

[data-theme="dark"] textarea:focus,
[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus {
  background: var(--input-focus-bg) !important;
  box-shadow: 0 0 0 3px var(--primary-glow) !important;
}

/* Dark mode: inline style patterns with rgba(0,0,0,...) backgrounds → swap to dark */
[data-theme="dark"] [style*="rgba(0, 0, 0, 0.1)"],
[data-theme="dark"] [style*="rgba(0,0,0,0.1)"],
[data-theme="dark"] [style*="rgba(0,0,0,.1)"] {
  background-color: var(--surface-subtle) !important;
}

[data-theme="dark"] [style*="rgba(0, 0, 0, 0.05)"],
[data-theme="dark"] [style*="rgba(0,0,0,0.05)"],
[data-theme="dark"] [style*="rgba(0,0,0,.05)"] {
  background-color: var(--overlay-subtle) !important;
}

[data-theme="dark"] [style*="rgba(0, 0, 0, 0.06)"],
[data-theme="dark"] [style*="rgba(0,0,0,0.06)"],
[data-theme="dark"] [style*="rgba(0,0,0,.06)"] {
  background-color: var(--overlay-subtle) !important;
}

/* Dark mode: inline style patterns with rgba(255,255,255,...) overlays */
[data-theme="dark"] [style*="rgba(255, 255, 255, 0.05)"],
[data-theme="dark"] [style*="rgba(255,255,255,0.05)"] {
  background-color: var(--overlay-subtle) !important;
}

[data-theme="dark"] [style*="rgba(255, 255, 255, 0.1)"],
[data-theme="dark"] [style*="rgba(255,255,255,0.1)"] {
  background-color: var(--overlay-medium) !important;
  border-color: var(--overlay-medium) !important;
}

/* Dark mode: #e2e8f0 avatar circle */
[data-theme="dark"] [style*="#e2e8f0"] {
  background: #334155 !important;
}

/* Theme toggle button */
.theme-toggle {
  background: none;
  border: 1.5px solid var(--border-glass);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--overlay-medium);
  color: var(--text-primary);
  border-color: var(--primary);
}

/* ===== Logged-in user area + Settings dropdown ===== */
.nav-user {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-greeting {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.nav-role {
  color: var(--primary);
  text-transform: capitalize;
  font-weight: 700;
}
.settings-menu {
  position: relative;
}
.settings-btn {
  background: none;
  border: 1.5px solid var(--border-glass);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  flex-shrink: 0;
}
.settings-btn:hover {
  background: var(--overlay-medium);
  color: var(--primary);
  border-color: var(--primary);
  transform: rotate(30deg);
}
.settings-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 230px;
  background: var(--navbar-bg);
  border: 1px solid var(--border-glass);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 200;
  animation: slideDown 0.2s ease;
}
.settings-dropdown.open {
  display: flex;
}
.settings-userbox {
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--border-glass);
  margin-bottom: 6px;
}
.settings-userbox .su-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}
.settings-userbox .su-email {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin: 2px 0 8px;
  word-break: break-all;
}
.settings-userbox .su-role {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--primary);
  background: var(--overlay-subtle);
  padding: 3px 10px;
  border-radius: 20px;
}
.settings-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: none;
  border-radius: 9px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  transition: background 0.18s ease, color 0.18s ease;
}
.settings-item i {
  width: 18px;
  text-align: center;
  color: var(--text-secondary);
}
.settings-item:hover {
  background: var(--overlay-medium);
}
.settings-item:hover i {
  color: var(--primary);
}
.settings-item.danger {
  color: var(--icon-red);
}
.settings-item.danger i {
  color: var(--icon-red);
}
.settings-item.danger:hover {
  background: rgba(220, 38, 38, 0.1);
}
.settings-divider {
  height: 1px;
  background: var(--border-glass);
  margin: 6px 4px;
}
@media (max-width: 768px) {
  .nav-user .nav-greeting { display: none; }
}

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

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--bg-light);
  min-height: 100vh;
  overflow-x: hidden;
}

.app-bg-texture {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: url('./light_bg-DWOxOpMa.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.85;
  pointer-events: none;
  filter: blur(8px);
}

#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Common Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-outline {
  background: var(--bg-light-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(0, 0, 0, 0.15);
}

/* Navbar — a floating, rounded, frosted-glass pill. The blur is on THIS fixed
   element directly (the reliable pattern used by Apple/Stripe). It's centered
   with auto margins + a gap from the top and sides. */
.navbar {
  position: fixed;
  top: max(14px, env(safe-area-inset-top));
  left: 0;
  right: 0;
  z-index: 100;
  width: min(calc(100% - 32px), 1180px);
  margin-left: auto;
  margin-right: auto;
  padding: 10px 22px;
  border-radius: 22px;
  /* Translucent enough that the backdrop blur shows through prominently
     (Apple-style). Too much white here hides the blur. */
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  /* the .navbar itself is the frosted pill now — this is just the flex row inside it */
  max-width: none;
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--text-primary);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--primary);
}

/* Mobile actions (theme toggle + hamburger) — hidden on desktop */
.nav-mobile-actions {
  display: none;
}

/* Hamburger button */
.nav-hamburger {
  background: none;
  border: 1.5px solid var(--border-glass);
  border-radius: 8px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-primary);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.nav-hamburger:hover {
  background: var(--overlay-medium);
  border-color: var(--primary);
  color: var(--primary);
}

/* Mobile dropdown panel — hidden by default, shown when .open */
.nav-mobile-panel {
  display: none;
  flex-direction: column;
  gap: 12px;
  /* The navbar is now the pill; the panel floats just below it as its own card. */
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  padding: 14px 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.82));
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.75);
  animation: slideDown 0.25s ease;
}

.nav-mobile-panel.open {
  display: flex;
}

.nav-mobile-panel .container {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  width: 100%;
}

.nav-mobile-panel a {
  display: block;
  width: 100%;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 4px;
  border-bottom: 1px solid var(--border-glass);
  transition: color 0.2s;
}

.nav-mobile-panel a:hover {
  color: var(--primary);
}

.nav-mobile-panel .btn {
  width: 100%;
  margin-top: 4px;
}

.nav-mobile-panel .nav-greeting {
  font-weight: 600;
  color: var(--primary);
  padding: 8px 0;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Glass Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

/* Form Inputs */
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-glass);
  background: var(--input-bg);
  color: var(--input-text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
  background: var(--input-focus-bg);
}

input::placeholder, textarea::placeholder {
  color: var(--input-placeholder);
}

/* Checkboxes & radios must NOT inherit the full-width text-input styling. */
input[type="checkbox"], input[type="radio"] {
  width: auto;
  min-width: 0;
  padding: 0;
  margin: 0;
  flex: none;
  accent-color: var(--primary);
  cursor: pointer;
  box-shadow: none;
}
input[type="checkbox"]:focus, input[type="radio"]:focus {
  box-shadow: none;
}

/* --- Search Bar --- */
.search-bar-wrapper {
  position: relative;
  margin-bottom: 24px;
}

.search-bar-wrapper i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 0.9rem;
  pointer-events: none;
}

.search-bar-wrapper input {
  padding-left: 38px;
  background: rgba(255,255,255,0.9);
  border-radius: 10px;
  border: 1.5px solid var(--border-glass);
  font-size: 0.95rem;
}

/* --- Portal Tab Navigation --- */
.portal-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  padding: 6px;
  background: rgba(0,0,0,0.04);
  border-radius: 14px;
  border: 1px solid var(--border-glass);
}

.portal-tab {
  flex: 1;
  min-width: 120px;
  padding: 10px 16px;
  border-radius: 10px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.25s ease;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.portal-tab:hover {
  background: rgba(255,255,255,0.7);
  color: var(--text-primary);
}

.portal-tab.active {
  background: white;
  color: var(--primary);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  border: 1px solid rgba(0,91,181,0.15);
}

/* --- Course Pill Switcher (Student) --- */
.course-switcher {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.course-pill {
  padding: 8px 18px;
  border-radius: 50px;
  border: 1.5px solid var(--border-glass);
  background: rgba(255,255,255,0.7);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.course-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0,91,181,0.06);
}

.course-pill.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* Faculty grid */
.faculty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

/* --- Content Item Card --- */
.content-item {
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 16px;
  background: rgba(255,255,255,0.5);
  transition: all 0.2s ease;
}

.content-item:hover {
  background: rgba(255,255,255,0.8);
  border-color: rgba(0,0,0,0.12);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

/* Collapsible content item — details visible only after clicking */
.content-collapse { padding: 0; }
.content-summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 12px; padding: 14px 16px; }
.content-summary::-webkit-details-marker { display: none; }
.content-summary .c-title { font-weight: 600; font-size: 0.95rem; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.content-summary .c-badge { font-size: 0.72rem; color: var(--text-secondary); background: rgba(0,0,0,0.08); padding: 2px 8px; border-radius: 10px; white-space: nowrap; flex-shrink: 0; }
.content-summary .c-chevron { color: var(--text-secondary); transition: transform 0.2s ease; flex-shrink: 0; font-size: 0.85rem; }
.content-collapse[open] .c-chevron { transform: rotate(180deg); }
.content-detail { padding: 2px 16px 16px 48px; }
[data-theme="dark"] .content-summary .c-badge { background: rgba(255,255,255,0.1); }

/* Progress bar */
.progress-track { height: 10px; border-radius: 20px; background: rgba(0,0,0,0.1); overflow: hidden; }
[data-theme="dark"] .progress-track { background: rgba(255,255,255,0.12); }
.progress-fill { height: 100%; border-radius: 20px; background: linear-gradient(90deg, var(--primary), var(--secondary)); transition: width 0.6s ease; }

/* --- Quiz Builder Styles --- */
.quiz-question-card {
  padding: 14px 16px;
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  background: rgba(255,255,255,0.5);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: all 0.2s ease;
}

.quiz-question-card:hover {
  background: rgba(255,255,255,0.8);
}

.quiz-q-badge {
  min-width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- Section Headers --- */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Footer */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border-glass);
  padding: 32px 0;
  padding-bottom: max(32px, env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
}

/* Bug button in footer */
.bug-footer-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 50px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.25s ease;
}
.bug-footer-btn:hover {
  background: var(--primary);
  color: white;
  border-color: transparent;
}

/* Inline video embed (16:9 responsive) for student course content */
.video-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  margin-top: 10px;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  border: 1px solid var(--border-glass);
}
.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Floating Report-a-Bug button (replaces the old footer button) */
.bug-fab {
  position: fixed;
  right: 20px;
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: 0 6px 20px var(--primary-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.bug-fab:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 10px 26px var(--primary-glow);
}

/* Bug screenshot upload label */
.bug-upload-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1.5px dashed var(--border-glass);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.5);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 4px;
}
.bug-upload-label:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 91, 181, 0.05);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  flex-wrap: wrap;
  gap: 16px;
}

.social-links {
  display: flex;
  gap: 16px;
  font-size: 1.4rem;
}

.social-links a {
  color: var(--text-secondary);
  transition: color 0.3s;
}

.social-links a:hover {
  color: var(--primary);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  background: white;
  border: 1px solid var(--border-glass);
  border-left: 4px solid var(--primary);
  color: var(--text-primary);
  padding: 14px 20px;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  animation: slideIn 0.3s ease forwards;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 320px;
}

.toast.success { border-left-color: #10b981; }
.toast.error { border-left-color: #ef4444; }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

/* ===================== */
/* RESPONSIVE / MOBILE   */
/* ===================== */
@media (max-width: 768px) {
  /* Navbar pill — taller, slightly narrower gap from the edges on mobile */
  .navbar {
    top: max(10px, env(safe-area-inset-top));
    width: calc(100% - 24px);
    padding: 15px 16px;
    border-radius: 20px;
  }
  .nav-container {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 0 16px;
  }
  .nav-logo {
    font-size: 1.1rem;
    gap: 8px;
  }
  .nav-logo img {
    height: 28px;
  }

  /* Hide desktop links, show mobile actions on mobile */
  .nav-links-desktop {
    display: none !important;
  }
  .nav-mobile-actions {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  /* Portal pages push below fixed navbar */
  .portal-page,
  [style*="padding: 120px"] {
    padding-top: 80px !important;
  }

  /* Hero — override inline styles */
  .hero {
    padding: 100px 0 40px !important;
  }
  h1 {
    font-size: 2.2rem !important;
    line-height: 1.15 !important;
  }
  h2 {
    font-size: 1.6rem !important;
  }
  h3 {
    font-size: 1.2rem !important;
  }

  /* Hero buttons stack vertically */
  .hero-btns {
    flex-direction: column !important;
    align-items: center !important;
    gap: 10px !important;
  }
  .hero .btn {
    width: 100%;
    max-width: 280px;
  }

  /* Hero paragraph */
  .hero p {
    font-size: 1rem !important;
    max-width: 100% !important;
    margin-bottom: 24px !important;
  }

  /* Containers */
  .container {
    padding: 0 16px;
  }

  /* Faculty section */
  #faculty {
    padding: 20px 16px 40px !important;
  }
  #faculty h2 {
    font-size: 1.8rem !important;
  }

  /* Faculty grid: collapse to single column on mobile */
  .faculty-grid,
  [style*="grid-template-columns: repeat(auto-fill"],
  [style*="grid-template-columns: repeat(auto-fit"] {
    grid-template-columns: 1fr !important;
  }

  /* Registration CTA card */
  .glass-card[style*="max-width: 560px"],
  .glass-card[style*="max-width: 600px"] {
    max-width: 100% !important;
    padding: 28px 20px !important;
    margin-left: 8px !important;
    margin-right: 8px !important;
  }
  .glass-card[style*="padding: 48px"] {
    padding: 28px 20px !important;
  }

  /* Cards */
  .glass-card {
    padding: 20px;
    border-radius: 16px;
  }

  /* Grids collapse */
  [style*="grid-column: 1 / -1"] {
    grid-column: auto !important;
  }

  /* Portal tabs */
  .portal-tabs {
    gap: 4px;
  }
  .portal-tab {
    min-width: 80px;
    font-size: 0.8rem;
    padding: 8px 10px;
  }
  .portal-tab span {
    display: none;
  }

  /* Course pills */
  .course-pill {
    font-size: 0.8rem;
    padding: 6px 14px;
  }

  /* Section headers stack */
  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Footer */
  .footer {
    padding: 32px 0;
  }
  .footer-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 24px;
  }
  .social-links {
    margin-top: 8px;
    font-size: 1.7rem;
    gap: 20px;
  }
  .bug-footer-btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  /* Toast position */
  .toast-container {
    right: 12px;
    left: 12px;
    bottom: 16px;
  }
  .toast {
    max-width: 100%;
    min-width: auto;
  }

  /* Submission flex rows */
  [style*="display: flex; gap: 8px"] {
    flex-wrap: wrap;
  }

  /* Buttons full width on mobile forms */
  .btn-full-mobile {
    width: 100% !important;
  }

  /* Bug report button repositioned for mobile */
  [style*="position: fixed; bottom: 20px; right: 20px"] {
    bottom: 70px !important;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.8rem !important;
  }
  h2 {
    font-size: 1.4rem !important;
  }
  .glass-card {
    padding: 16px;
  }
  .hero {
    padding: 120px 0 30px !important;
  }
}

/* ============================================================ */
/* MOBILE APP POLISH                                            */
/* Native-app feel for the Capacitor APK and phone browsers:    */
/* real touch targets, no grey tap-flash, safe-area insets, and */
/* inputs that don't trigger iOS zoom-on-focus.                 */
/* ============================================================ */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  /* keep scrolling contained to the app instead of chaining to the
     browser's rubber-band / pull-to-refresh */
  overscroll-behavior-y: contain;
}
a, button, .btn, .portal-tab, .course-pill, .nav-hamburger,
.theme-toggle, .settings-btn, .settings-item, [onclick] {
  -webkit-tap-highlight-color: transparent;
}
button, .btn, .portal-tab, .nav-hamburger, .theme-toggle, .settings-btn {
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation; /* removes the ~300ms tap delay */
}
.btn:active { transform: scale(0.97); }

@media (max-width: 768px) {
  /* >=16px inputs so mobile browsers don't auto-zoom the page on focus */
  input, select, textarea { font-size: 16px !important; }

  /* Comfortable >=44px touch targets */
  .btn { min-height: 46px; }
  .portal-tab { min-height: 44px; }
  /* Compact nav controls so they fit the floating pill (not oversized) */
  .nav-hamburger, .theme-toggle, .settings-btn { width: 25px; height: 25px; font-size: 0.75rem; border-width: 1px; }
  .nav-hamburger { border-radius: 6px; }
  .nav-mobile-actions { gap: 6px; }

  /* Respect notches / rounded corners (viewport-fit=cover is set in index.html) */
  .nav-container,
  .container {
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }
  #app { padding-bottom: env(safe-area-inset-bottom); }
}