/* ============================================================
   PSU AcadRes - index-style.css
   Intelligent Academic Resource Management System
   Palawan State University · College of Information Technology
   ============================================================ */

/* ============================================================
   0. GOOGLE FONTS IMPORT
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Serif+Display:ital@0;1&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================================
   1. CSS DESIGN TOKENS - RUST ORANGE / SLATE GRAY / OFF-WHITE
   ============================================================ */
:root {

  /* Primary - Rust Orange */
  --clr-primary-50:  #fff4f0;
  --clr-primary-100: #ffe4d9;
  --clr-primary-200: #ffc4aa;
  --clr-primary-300: #ff9e75;
  --clr-primary-400: #e8713e;
  --clr-primary-500: #c0522a;
  --clr-primary-600: #a3401e;
  --clr-primary-700: #7d3018;
  --clr-primary-800: #5a2112;
  --clr-primary-900: #3a140a;

  /* Accent - warm amber complement */
  --clr-accent-400: #d97706;
  --clr-accent-500: #b45309;
  --clr-accent-100: #fef3c7;

  /* AI highlight - warm terracotta tint */
  --clr-ai-400:  #c0522a;
  --clr-ai-500:  #a3401e;
  --clr-ai-100:  #fff4f0;

  /* Success / Warning / Danger */
  --clr-success-500: #22c55e;
  --clr-success-100: #dcfce7;
  --clr-warning-500: #f59e0b;
  --clr-warning-100: #fef3c7;
  --clr-danger-500:  #ef4444;
  --clr-danger-100:  #fee2e2;

  /* Slate Gray neutrals */
  --clr-gray-50:  #f8f7f6;
  --clr-gray-100: #f0edea;
  --clr-gray-200: #e2ddd8;
  --clr-gray-300: #cdc6be;
  --clr-gray-400: #9e9389;
  --clr-gray-500: #6b6059;
  --clr-gray-600: #524840;
  --clr-gray-700: #3d342d;
  --clr-gray-800: #2a221c;
  --clr-gray-900: #1a130e;

  /* Semantic surface tokens - Off-White base */
  --bg-page:        #f5f2ef;
  --bg-surface:     #fffefb;
  --bg-surface-2:   #f9f6f2;
  --bg-surface-3:   #f0edea;
  --bg-overlay:     rgba(26, 19, 14, 0.45);

  --border-subtle:  #e8e2db;
  --border-default: #d4cbc2;
  --border-strong:  #a89e94;

  --text-primary:   #1a130e;
  --text-secondary: #524840;
  --text-muted:     #9e9389;
  --text-inverse:   #fffefb;
  --text-link:      var(--clr-primary-600);

  --nav-bg:         rgba(255, 254, 251, 0.94);
  --nav-border:     rgba(212, 203, 194, 0.7);
  --nav-shadow:     0 1px 12px rgba(26,19,14,0.07);

  --hero-bg:        linear-gradient(135deg, #fff4f0 0%, #f9f6f2 50%, #f5f2ef 100%);
  --card-bg:        #fffefb;
  --card-shadow:    0 1px 3px rgba(26,19,14,0.06), 0 4px 16px rgba(26,19,14,0.05);
  --card-shadow-lg: 0 4px 6px rgba(26,19,14,0.05), 0 10px 40px rgba(26,19,14,0.09);
  --card-hover-shadow: 0 8px 24px rgba(192,82,42,0.12), 0 2px 8px rgba(26,19,14,0.08);

  --input-bg:           #fffefb;
  --input-border:       #d4cbc2;
  --input-focus-border: var(--clr-primary-500);
  --input-focus-ring:   rgba(192, 82, 42, 0.16);

  --code-bg: #f0edea;

  /* Elevation shadows */
  --shadow-xs:  0 1px 2px rgba(26,19,14,0.06);
  --shadow-sm:  0 1px 3px rgba(26,19,14,0.08), 0 1px 2px rgba(26,19,14,0.05);
  --shadow-md:  0 4px 12px rgba(26,19,14,0.08), 0 2px 4px rgba(26,19,14,0.05);
  --shadow-lg:  0 10px 32px rgba(26,19,14,0.10), 0 4px 8px rgba(26,19,14,0.06);
  --shadow-xl:  0 20px 60px rgba(26,19,14,0.13);

  /* Typography */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-sans:    'DM Sans', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing scale (4px base) */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border radius */
  --radius-sm:   0.375rem;
  --radius-md:   0.625rem;
  --radius-lg:   0.875rem;
  --radius-xl:   1.25rem;
  --radius-2xl:  1.75rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   0.12s ease;
  --transition-base:   0.22s ease;
  --transition-slow:   0.4s ease;

  /* Navbar */
  --navbar-height: 3.75rem;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*,
*::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-sans);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-page);
  height: 100vh;
  overflow: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--clr-primary-700);
}

ul, ol {
  list-style: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

fieldset {
  border: none;
}

hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: var(--space-2) 0;
}

/* ============================================================
   3. UTILITY CLASSES
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

.hidden {
  display: none !important;
}

.text-muted   { color: var(--text-muted); }
.text-primary { color: var(--text-primary); }
.text-accent  { color: var(--clr-accent-400); }

.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* ============================================================
   4. TYPOGRAPHY SCALE
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

p { margin: 0; }

code, pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--code-bg);
  border-radius: var(--radius-sm);
}

code {
  padding: 0.125rem 0.375rem;
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.5rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    opacity var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2.5px solid var(--clr-primary-400);
  outline-offset: 2px;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.btn--primary {
  background: var(--clr-primary-500);
  color: #fff;
  border-color: var(--clr-primary-500);
  box-shadow: 0 1px 4px rgba(26,94,249,0.25);
}
.btn--primary:hover {
  background: var(--clr-primary-600);
  border-color: var(--clr-primary-600);
  box-shadow: 0 4px 14px rgba(26,94,249,0.35);
  transform: translateY(-1px);
}

/* Secondary */
.btn--secondary {
  background: transparent;
  color: var(--clr-primary-600);
  border-color: var(--clr-primary-300);
}
.btn--secondary:hover {
  background: var(--clr-primary-50);
  border-color: var(--clr-primary-400);
}


/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-default);
}
.btn--ghost:hover {
  background: var(--bg-surface-3);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

/* Icon */
.btn--icon {
  padding: 0.4rem;
  width: 2.125rem;
  height: 2.125rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 1rem;
}
.btn--icon:hover {
  background: var(--bg-surface-3);
  color: var(--text-primary);
}

/* Sizes */
.btn--sm {
  padding: 0.3rem 0.75rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}
.btn--lg {
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  border-radius: var(--radius-lg);
}

/* Approve / Reject */
.btn--approve {
  background: var(--clr-success-100);
  color: #166534;
  border-color: #bbf7d0;
}
.btn--approve:hover {
  background: var(--clr-success-500);
  color: #fff;
}
.btn--reject {
  background: var(--clr-danger-100);
  color: #991b1b;
  border-color: #fecaca;
}
.btn--reject:hover {
  background: var(--clr-danger-500);
  color: #fff;
}

/* ============================================================
   6. BADGES
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.2rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.01em;
}

.badge--ai {
  background: var(--clr-primary-50);
  color: var(--clr-primary-600);
  border: 1px solid rgba(192,82,42,0.2);
}


.badge--alert {
  background: var(--clr-danger-100);
  color: #b91c1c;
  border: 1px solid #fecaca;
}

/* ============================================================
   7. STATUS BADGES
   ============================================================ */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.175rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.status-badge--done {
  background: var(--clr-success-100);
  color: #166534;
}
.status-badge--pending {
  background: var(--clr-warning-100);
  color: #92400e;
}
.status-badge--none {
  background: var(--bg-surface-3);
  color: var(--text-muted);
}

/* ============================================================
   8. FORM ELEMENTS
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label,
fieldset legend {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.5625rem 0.875rem;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  font-size: 0.9rem;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.form-group textarea {
  resize: vertical;
  min-height: 5rem;
  line-height: 1.6;
}

select {
  padding: 0.5rem 0.75rem;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

select:focus {
  outline: none;
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

/* ============================================================
   9. NAVBAR
   ============================================================ */
.top-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nav-border);
  box-shadow: var(--nav-shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-5);
  gap: var(--space-4);
  transition: background var(--transition-slow), border-color var(--transition-slow);
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}

.psu-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--clr-primary-600);
  letter-spacing: -0.01em;
}

.brand-sub {
  font-size: 0.6875rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Nav left/right */
.nav-left {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  min-width: 0;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Nav menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-item {
  padding: 0.3125rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
  border: none;
  background: none;
}

.nav-item:hover {
  background: var(--bg-surface-3);
  color: var(--text-primary);
}

.nav-item.active,
.nav-item[aria-current="page"] {
  background: var(--clr-primary-50);
  color: var(--clr-primary-600);
  font-weight: 600;
}


/* Nav search box */
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-surface-3);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-box:focus-within {
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.search-box input {
  border: none;
  background: transparent;
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-primary);
  width: 180px;
  outline: none;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-btn {
  padding: 0.375rem 0.75rem;
  color: var(--text-muted);
  border-left: 1px solid var(--border-subtle);
  transition: color var(--transition-fast);
  font-size: 0.875rem;
}

.search-btn:hover {
  color: var(--clr-primary-500);
}

/* Role badge */
.role-badge {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.75rem;
  background: var(--clr-primary-50);
  border: 1px solid var(--clr-primary-200);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  color: var(--clr-primary-700);
}



.role-label {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.role-value {
  font-weight: 600;
  color: var(--clr-primary-600);
  font-size: 0.8125rem;
}


/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast);
  cursor: pointer;
}

.theme-toggle:hover {
  border-color: var(--clr-primary-400);
  color: var(--clr-primary-600);
}

.theme-icon {
  font-size: 0.9rem;
}

/* Profile pic & dropdown */
.profile-pic {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--border-default);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.profile-pic:hover {
  border-color: var(--clr-primary-400);
}

.dropdown {
  position: relative;
  border-radius: var(--radius-full);
  padding: 0;
  background: none;
  cursor: pointer;
}
.dropdown-content {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: 200;
  animation: dropdown-in 0.15s ease;
}

@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.dropdown:focus .dropdown-content,
.dropdown:hover .dropdown-content,
.dropdown.dropdown--open .dropdown-content {
  display: block;
}

.dropdown-content button,
.dropdown-content a {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

.dropdown-content button:hover,
.dropdown-content a:hover {
  background: var(--bg-surface-3);
  color: var(--text-primary);
}

/* ============================================================
   10. PANELS WRAPPER
   ============================================================ */
.panels-wrapper {
  margin-top: var(--navbar-height);
  height: calc(100vh - var(--navbar-height));
  overflow-y: auto;
}

.panels-container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* All panels */
.panel {
  display: none;
  padding: var(--space-8) var(--space-6);
  width: 100%;
  max-width: 1680px;
  margin-inline: auto;
  animation: panel-fade-in 0.28s ease;
}

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

/* Show panels when active. JS adds .panel--active. Hero defaults visible. */
.panel--hero,
.panel--active {
  display: block;
}

/* Panel headers */
.panel-header {
  margin-bottom: var(--space-8);
  text-align: center;
}

.panel-header h2 {
  margin-bottom: var(--space-2);
  font-size: clamp(1.4rem, 2.5vw, 1.875rem);
}

.panel-header p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* ============================================================
   11. HERO SECTION
   ============================================================ */
.panel--hero {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-12);
  padding: var(--space-8) var(--space-6) var(--space-6);
  min-height: calc(100vh - var(--navbar-height));
  background: var(--hero-bg);
  max-width: 100%;
  margin-inline: 0;
  position: relative;
  overflow: hidden;
}

.panel--hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(192,82,42,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(192,82,42,0.03) 0%, transparent 55%);
  pointer-events: none;
}

.hero-content {
  max-width: 660px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 1rem;
  background: var(--clr-primary-50);
  color: var(--clr-primary-600);
  border: 1px solid rgba(192,82,42,0.22);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-5);
}


.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-primary-400);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1rem;
  font-weight: 500;
  color: var(--clr-primary-600);
  margin-bottom: var(--space-4);
  letter-spacing: 0.01em;
}


.hero-description {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-8);
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}

.hero-actions .btn--primary {
  padding: 0.7rem 1.75rem;
  font-size: 0.9375rem;
}

.hero-actions .btn--secondary {
  padding: 0.7rem 1.5rem;
  font-size: 0.9375rem;
}

/* Feature chips */
.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.375rem 0.875rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.hero-feature:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.feature-icon {
  font-size: 1rem;
}

/* Hero visual */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 100%;
  padding-right: 15rem;
}

.hero-visual-placeholder {
  width: 320px;
  height: 320px;
  border-radius: var(--radius-2xl);
  background: linear-gradient(135deg, #ffe4d9 0%, #fff4f0 100%);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 7rem;
  box-shadow: var(--shadow-xl);
  animation: hero-float 5s ease-in-out infinite;
}


@keyframes hero-float {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50%       { transform: translateY(-14px) rotate(1deg); }
}

/* ============================================================
   12. ROLE SELECTION
   ============================================================ */
.panel--roles {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.panel--dashboard,
#panel-viewer {
  width: 100%;
  max-width: 1680px;
}

.panel--student-setup {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  display: none;
  flex-direction: column;
  justify-content: flex-start;
}

.panel--student-setup.panel--active {
  display: flex;
}

.role-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-2);
}

.role-card {
  position: relative;
  background: var(--card-bg);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--card-shadow);
  cursor: pointer;
  transition:
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.role-card:hover,
.role-card:focus {
  box-shadow: var(--card-hover-shadow);
  border-color: var(--clr-primary-300);
  transform: translateY(-3px);
  outline: none;
}

.role-card--featured {
  border-color: var(--clr-primary-400);
  box-shadow: var(--card-shadow), 0 0 0 1px var(--clr-primary-200);
  background: linear-gradient(180deg, var(--clr-primary-50) 0%, var(--card-bg) 100%);
}


.role-card__badge {
  position: absolute;
  top: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--clr-primary-500);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.875rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(26,94,249,0.35);
}

.role-card__icon {
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: var(--space-1);
}

.role-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.role-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.role-card__perms {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.role-card__perms li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding-left: var(--space-5);
  position: relative;
}

.role-card__perms li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--clr-success-500);
  font-weight: 700;
  font-size: 0.8rem;
}

.role-card .btn {
  width: 100%;
  margin-top: auto;
}

/* ============================================================
   13. STAT CARDS
   ============================================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-card__icon {
  font-size: 2rem;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-primary-50);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}


.stat-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.stat-card__value {
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-card__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ============================================================
   14. DASHBOARD LAYOUT
   ============================================================ */
.dashboard-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: var(--space-6);
  width: 100%;
}

.dashboard-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* ============================================================
   15. DASH WIDGETS (Cards)
   ============================================================ */
.dash-widget {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition-base);
}

.dash-widget:hover {
  box-shadow: var(--shadow-md);
}

.dash-widget__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.dash-widget__header h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.dash-widget__header select {
  font-size: 0.8125rem;
  padding: 0.3rem 0.65rem;
}

/* ============================================================
   16. MATERIAL LIST (Recent materials)
   ============================================================ */
.material-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.material-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.material-item:hover {
  background: var(--bg-surface-3);
}

.material-item__icon {
  font-size: 1.375rem;
  flex-shrink: 0;
}

.material-item__info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
  min-width: 0;
}

.material-item__title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.material-item__meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.material-item__badge {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.175rem 0.55rem;
  border-radius: var(--radius-full);
  background: var(--clr-success-100);
  color: #166534;
}

.material-item__badge--pending {
  background: var(--clr-warning-100);
  color: #92400e;
}

/* ============================================================
   17. UPLOAD PREVIEW CARDS (Dashboard)
   ============================================================ */
.upload-preview-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.upload-preview-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface-3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.upload-preview-card:hover {
  border-color: var(--clr-primary-300);
  box-shadow: var(--shadow-sm);
}

.upload-preview-card__type {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  background: var(--clr-primary-100);
  color: var(--clr-primary-700);
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

.upload-preview-card__info {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  gap: 0.125rem;
}

.upload-preview-card__name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.upload-preview-card__size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================================
   18. QUICK ACTIONS
   ============================================================ */
.quick-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.quick-action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface-2);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.quick-action-btn:hover {
  background: var(--clr-primary-50);
  border-color: var(--clr-primary-300);
  box-shadow: var(--shadow-sm);
  transform: translateX(2px);
}

.quick-action-btn:focus-visible {
  outline: 2.5px solid var(--clr-primary-400);
  outline-offset: 2px;
}

/* ============================================================
   19. AI TOOL LIST
   ============================================================ */
.ai-tool-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.ai-tool-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-2);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.ai-tool-item:hover {
  background: var(--clr-ai-100);
  border-color: rgba(6,182,212,0.25);
}

.ai-tool-item__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.ai-tool-item > div {
  flex: 1;
  min-width: 0;
}

.ai-tool-item strong {
  display: block;
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.ai-tool-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ============================================================
   20. ANALYTICS CHART PLACEHOLDER
   ============================================================ */
.analytics-chart-placeholder {
  width: 100%;
  min-height: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-surface-3);
  border: 1px solid var(--border-subtle);
}

.analytics-chart-placeholder canvas {
  width: 100% !important;
  max-height: 250px;
}

.chart-caption {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: var(--space-3);
}

/* ============================================================
   21. UPLOAD INTERFACE
   ============================================================ */
.upload-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-6);
  align-items: start;
}

.upload-form-area {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-xl);
  background: var(--bg-surface);
  transition:
    border-color var(--transition-base),
    background var(--transition-base),
    box-shadow var(--transition-base);
  cursor: pointer;
}

.dropzone:hover,
.dropzone.drag-over {
  border-color: var(--clr-primary-400);
  background: var(--clr-primary-50);
  box-shadow: 0 0 0 4px var(--input-focus-ring);
}

[data-theme="dark"] .dropzone:hover,
[data-theme="dark"] .dropzone.drag-over {
  background: rgba(26,94,249,0.06);
}

.dropzone__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.dropzone__icon {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.dropzone__title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
}

.dropzone__subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.dropzone__divider {
  font-size: 0.8125rem;
  color: var(--text-muted);
  position: relative;
  padding: 0 var(--space-4);
}

.dropzone__divider::before,
.dropzone__divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40px;
  height: 1px;
  background: var(--border-default);
}

.dropzone__divider::before { right: 100%; }
.dropzone__divider::after  { left: 100%; }

/* Upload metadata */
.upload-meta {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--card-shadow);
}

.upload-meta legend {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0 var(--space-2);
  margin-bottom: var(--space-4);
}

.upload-meta .form-group + .form-group {
  margin-top: var(--space-4);
}

/* AI mode selector */
.ai-mode-selector {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--card-shadow);
}

.ai-mode-selector legend {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0 var(--space-2);
  margin-bottom: var(--space-2);
}

.ai-mode-selector__hint {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.ai-mode-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.ai-mode-card {
  position: relative;
  cursor: pointer;
}

.ai-mode-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.ai-mode-card__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3);
  background: var(--bg-surface-2);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-lg);
  text-align: center;
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.ai-mode-card:hover .ai-mode-card__body {
  border-color: var(--clr-primary-300);
  background: var(--clr-primary-50);
}


.ai-mode-card input:checked + .ai-mode-card__body {
  border-color: var(--clr-primary-500);
  background: var(--clr-primary-50);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.ai-mode-card__icon {
  font-size: 1.625rem;
}

.ai-mode-card strong {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.ai-mode-card p {
  font-size: 0.775rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.upload-actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

/* Upload preview panel (sidebar) */
.upload-preview-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: sticky;
  top: calc(var(--navbar-height) + var(--space-6));
}

.upload-preview-panel h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.file-preview-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--card-shadow);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-preview-card__empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-muted);
  text-align: center;
  font-size: 0.875rem;
}

.file-preview-card__empty span {
  font-size: 2.5rem;
  opacity: 0.45;
}

.file-preview-card__details {
  width: 100%;
}

.file-preview-card__thumb {
  width: 100%;
  height: 100px;
  background: var(--bg-surface-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.file-preview-card__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.file-preview-card__meta li {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.file-preview-card__meta span {
  color: var(--text-muted);
}

/* Upload progress */
.upload-progress {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: var(--card-shadow);
}

.upload-progress__bar {
  height: 8px;
  background: var(--bg-surface-3);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.upload-progress__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--clr-primary-500), var(--clr-ai-400));
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.upload-progress__label {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ============================================================
   22. DOCUMENT VIEWER
   ============================================================ */
.viewer-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  flex-wrap: wrap;
}

.viewer-toolbar label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.viewer-toolbar select {
  flex: 1;
  min-width: 200px;
}

.viewer-split {
  display: grid;
  grid-template-columns: 3fr 7fr;
  gap: var(--space-5);
  height: calc(100vh - var(--navbar-height) - 12rem);
  min-height: 520px;
}

.viewer-pane {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
  min-width: 0;
}

.viewer-pane__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface-2);
  flex-wrap: wrap;
}

.viewer-pane__header h3 {
  font-size: 0.9375rem;
  font-weight: 600;
}

.viewer-pane__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-5);
  padding-bottom: 4rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-primary);
  min-height: 0;
  position: relative;
}


/* AI Output section spacing */
.viewer-pane--ai .viewer-pane__body > .tab-panel--active > * + * {
  margin-top: var(--space-4);
}

#tab-summary.tab-panel--active,
#tab-flashcards.tab-panel--active,
#tab-quiz.tab-panel--active,
#tab-glossary.tab-panel--active {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-bottom: var(--space-6);
}

#tab-quiz .quiz-question {
  margin-bottom: var(--space-4);
}

#tab-flashcards .flashcard-item {
  margin-bottom: var(--space-3);
}

#glossaryOutput dl {
  gap: var(--space-3);
}

#summaryOutput .summary-text {
  padding: var(--space-4) var(--space-2);
}

/* Scrollbar */
.viewer-pane__body::-webkit-scrollbar { width: 6px; }
.viewer-pane__body::-webkit-scrollbar-track { background: transparent; }
.viewer-pane__body::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: var(--radius-full);
}

/* Viewer tabs */
.viewer-tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--bg-surface-3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 3px;
}

.viewer-tab {
  padding: 0.3rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: calc(var(--radius-md) - 2px);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  border: none;
  background: none;
}

.viewer-tab:hover {
  color: var(--text-primary);
}

.viewer-tab.active {
  background: var(--bg-surface);
  color: var(--clr-primary-600);
  font-weight: 600;
  box-shadow: var(--shadow-xs);
}

/* Tab panels */
.tab-panel {
  height: 100%;
}

.tab-panel[hidden] {
  display: none;
}

/* Viewer placeholder */
.viewer-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  height: 100%;
  min-height: 300px;
  color: var(--text-muted);
  text-align: center;
  font-size: 0.9rem;
}

.viewer-placeholder span {
  font-size: 2.5rem;
  opacity: 0.4;
}

/* Flashcard */
.flashcard-deck {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ============================================================
   23. AI OUTPUT SECTION
   ============================================================ */
.panel--ai-output {
  padding-top: var(--space-8);
}

.ai-output-grid {
  display: grid;
  grid-template-columns: 3fr 7fr;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.ai-output-card--full {
  grid-column: 1 / -1;
}

.ai-output-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--card-shadow);
  overflow: visible;
  transition: box-shadow var(--transition-base);
}

.ai-output-card:hover {
  box-shadow: var(--shadow-md);
}

.ai-output-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--bg-surface-2);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: nowrap;
}

.ai-output-card__header h3 {
  flex: 1;
  min-width: 0;
}

.ai-output-card__toggle {
  flex-shrink: 0;
  margin-left: auto;
}

.ai-output-card__icon {
  font-size: 1.25rem;
}

.ai-output-card__header h3 {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 600;
}

.ai-output-card__toggle {
  color: var(--text-muted);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.ai-output-card__toggle:hover {
  color: var(--text-primary);
}

.ai-output-card__toggle[aria-expanded="false"] {
  transform: rotate(180deg);
}

.ai-output-card__body {
  padding: var(--space-5);
}

/* Concept list */
.concept-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.concept-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 0.9rem;
  color: var(--text-primary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.concept-item:hover {
  background: var(--bg-surface-3);
}

.concept-item__dot {
  color: var(--clr-primary-400);
  font-size: 0.625rem;
  margin-top: 0.375rem;
  flex-shrink: 0;
}

/* Simplified text */
.simplified-text {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.placeholder-text {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.9rem;
}

/* Glossary */
.terms-glossary {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-3);
}

.term-entry {
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface-3);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--clr-primary-400);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.term-entry:hover {
  border-left-color: var(--clr-primary-600);
}

.term-entry__term {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.term-entry__def {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* AI output actions */
.ai-output-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ============================================================
   24. SEARCH SECTION
   ============================================================ */
.panel--search {
  padding-top: var(--space-8);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.pagination__btn {
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination__btn:hover:not(:disabled) {
  background: var(--clr-primary-50);
  border-color: var(--clr-primary-300);
  color: var(--clr-primary-600);
}

.pagination__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination__pages {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ============================================================
   25. ADMIN DASHBOARD
   ============================================================ */
.admin-body {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--space-6);
}

.admin-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* Moderation list */
.moderation-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.moderation-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--clr-danger-500);
  border-radius: var(--radius-md);
  flex-wrap: wrap;
}

.moderation-item__info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.moderation-item__info strong {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 600;
}

.moderation-item__info span {
  font-size: 0.775rem;
  color: var(--text-muted);
}

.moderation-item__actions {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

thead {
  background: var(--bg-surface-3);
  border-bottom: 1px solid var(--border-default);
}

th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

td {
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
  white-space: nowrap;
}

tr:last-child td {
  border-bottom: none;
}

tbody tr {
  transition: background var(--transition-fast);
}

tbody tr:hover {
  background: var(--bg-surface-3);
}

.table-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Admin file filter */
#adminFileFilter {
  padding: 0.35rem 0.75rem;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.8125rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#adminFileFilter:focus {
  outline: none;
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

/* ============================================================
   26. FOOTER
   ============================================================ */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--space-16);
}

.footer-inner {
  max-width: 1280px;
  margin-inline: auto;
  padding: var(--space-10) var(--space-6);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-8) var(--space-12);
  align-items: start;
}

/* Footer brand */
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  grid-column: 1;
}

.footer-brand img {
  flex-shrink: 0;
  opacity: 0.85;
}

.footer-brand div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer-brand strong {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-brand span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Footer links */
.footer-links {
  grid-column: 2;
}

.footer-links nav {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--clr-primary-500);
}

/* Footer meta */
.footer-meta {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.footer-disclaimer {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--clr-warning-100);
  border: 1px solid rgba(245,158,11,0.2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  line-height: 1.6;
}

.footer-thesis,
.footer-ai-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Footer bottom */
.footer-bottom {
  background: var(--bg-surface-3);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-4) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-muted);
  max-width: 100%;
}

/* ============================================================
   27. FOCUS STATES (Accessibility)
   ============================================================ */
:focus-visible {
  outline: 2.5px solid var(--clr-primary-400);
  outline-offset: 2px;
  border-radius: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2.5px solid var(--clr-primary-400);
  outline-offset: 3px;
}

/* ============================================================
   28. SCROLLBAR (Global - subtle)
   ============================================================ */
::-webkit-scrollbar        { width: 8px; height: 8px; }
::-webkit-scrollbar-track  { background: transparent; }
::-webkit-scrollbar-thumb  {
  background: var(--border-default);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
  background-clip: padding-box;
}

/* ============================================================
   29. HOVER / FOCUS / ACTIVE / SELECTED / DISABLED STATES
   ============================================================ */

/* Selected state (e.g. role card) */
.role-card[aria-selected="true"],
.role-card.selected {
  border-color: var(--clr-primary-500);
  box-shadow: 0 0 0 3px var(--input-focus-ring), var(--card-shadow-lg);
}

/* Selected nav item */
.nav-item[aria-selected="true"] {
  color: var(--clr-primary-600);
  background: var(--clr-primary-50);
}

/* ============================================================
   30. RESPONSIVE - TABLET (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {

  /* Navbar */
  .brand-sub { display: none; }
  .search-box { display: none; }

  .nav-menu .nav-item { padding: 0.3rem 0.55rem; font-size: 0.8125rem; }

  /* Hero */
  .panel--hero {
    grid-template-columns: 1fr;
    padding: var(--space-12) var(--space-6);
    min-height: auto;
  }
  .hero-visual { display: none; }
  .hero-content { max-width: 100%; }

  /* Role cards */
  .role-cards { grid-template-columns: 1fr 1fr; }

  /* Stats */
  .stats-row { grid-template-columns: repeat(2, 1fr); }

  /* Dashboard */
  .dashboard-body { grid-template-columns: 1fr; }

  /* Upload */
  .upload-layout { grid-template-columns: 1fr; }
  .upload-preview-panel { position: static; }
  .ai-mode-cards { grid-template-columns: 1fr; }

  /* Viewer */
  .viewer-split { grid-template-columns: 1fr; }

  /* AI output */
  .ai-output-grid { grid-template-columns: 1fr; }

  /* Admin */
  .admin-body { grid-template-columns: 1fr; }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
  .footer-links { grid-column: 1; }
  .footer-meta  { grid-column: 1; }
}

/* ============================================================
   31. RESPONSIVE - MOBILE (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {

  :root { --navbar-height: 3.25rem; }

  /* Navbar */
  .top-navbar {
    padding: 0 var(--space-4);
    gap: var(--space-2);
  }

  .nav-menu {
    gap: 0;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav-item {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    flex-shrink: 0;
  }

  .role-badge .role-label { display: none; }
  .theme-label { display: none; }

  /* Panel */
  .panel { padding: var(--space-6) var(--space-4); }

  /* Hero */
  .panel--hero { padding: var(--space-10) var(--space-4); }
  .hero-title { font-size: 1.875rem; }

  /* Role cards */
  .role-cards { grid-template-columns: 1fr; }
  .role-cards .role-card--featured { order: -1; }

  /* Stats */
  .stats-row { grid-template-columns: 1fr 1fr; }
  .stat-card { padding: var(--space-4); }
  .stat-card__value { font-size: 1.375rem; }

  /* Search */
  .search-bar { flex-direction: column; }
  .search-bar input { width: 100%; }

  .search-filters { flex-direction: column; }
  .filter-group { min-width: 100%; }

  /* Search results */
  .search-result-item { flex-direction: column; }
  .search-result-item__actions { flex-direction: row; }

  /* Tables */
  .table-wrapper { border-radius: var(--radius-sm); overflow-x: auto; }
  th, td { padding: var(--space-2) var(--space-3); font-size: 0.8rem; }

  /* Dropzone */
  .dropzone__inner { padding: var(--space-8) var(--space-4); }

  /* Upload actions */
  .upload-actions { flex-direction: column; }
  .upload-actions .btn { width: 100%; }

  /* Viewer toolbar */
  .viewer-toolbar { flex-direction: column; align-items: stretch; }

  /* Dashboard widgets */
  .dash-widget { padding: var(--space-4); }
  .dash-widget__header { flex-wrap: wrap; gap: var(--space-2); }
  .analytics-chart-placeholder { overflow-x: auto; }

  /* AI output cards */
.ai-output-card { padding: var(--space-4); }

.ai-output-card__header {
  gap: var(--space-2);
  flex-wrap: nowrap;
}

  /* Confidence rating buttons */
  #confidenceButtons { flex-direction: column; }
  #confidenceButtons .conf-btn { width: 100%; justify-content: flex-start; }

  /* Viewer tabs - scrollable on mobile */
  .viewer-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
  }
  .viewer-tab { flex-shrink: 0; font-size: 0.8rem; }

  /* Study timer area */
  #studyTimerBadge, #stopTimerBtn, #restartTimerBtn { font-size: 0.72rem; }

  /* Modals */
  #viewAllModal > div,
  #fullReportModal > div,
  #deleteConfirmModal > div {
    margin: 1rem;
    padding: 1.25rem;
  }

  /* Footer */
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--space-2);
  }
  .footer-links nav {
    gap: var(--space-3);
    justify-content: center;
  }
}

/* ============================================================
   32. RESPONSIVE - SMALL MOBILE (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {

  .stats-row { grid-template-columns: 1fr; }

  .hero-features { gap: var(--space-2); }
  .hero-feature { font-size: 0.75rem; padding: 0.3rem 0.65rem; }

  .ai-mode-cards { grid-template-columns: 1fr; }

  .terms-glossary { grid-template-columns: 1fr; }

  .ai-output-actions { flex-direction: column; }
  .ai-output-actions .btn { width: 100%; }
}

/* ============================================================
   33. PRINT STYLES
   ============================================================ */
@media print {
  .top-navbar,
  .site-footer,
  .quick-actions,
  .hero-actions,
  .upload-actions,
  .ai-output-actions,
  .btn { display: none !important; }

  body { background: white; color: black; font-size: 12pt; }
  .dash-widget, .stat-card, .role-card { box-shadow: none; border: 1px solid #ccc; }
}

/* ================================================================
   FEATURE 8 - Curriculum Tagging Styles
   ================================================================ */

.course-code-badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 999px;
  background: rgba(192,82,42,0.10);
  color: var(--clr-primary-600);
  border: 1px solid rgba(192,82,42,0.22);
  white-space: nowrap;
}

.faculty-only-fields {
  border-top: 1px dashed var(--border-default);
  margin-top: 0.75rem;
  padding-top: 0.75rem;
}

#studentProfileFields select,
#studentProfileFields input {
  color: var(--text-primary);
  background: var(--bg-surface);
}

@media print {
  body > *:not(#printSheet) { display: none !important; }
  #printSheet {
    display: block !important;
    font-family: Georgia, serif;
    color: #000;
    padding: 0;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
    overflow: visible;
  }
  #printSheet h1 { font-size: 1.4rem; border-bottom: 2px solid #000; padding-bottom: 0.4rem; page-break-after: avoid; break-after: avoid; }
  #printSheet h2 { font-size: 1.1rem; margin-top: 1.2rem; border-bottom: 1px solid #ccc; padding-bottom: 0.25rem; page-break-after: avoid; break-after: avoid; }
  #printSheet .ps-meta { font-size: 0.85rem; color: #555; margin-bottom: 1rem; }
  #printSheet .ps-section {
    page-break-inside: auto;
    break-inside: auto;
    margin-bottom: 1.2rem;
  }
  #printSheet .ps-fc {
    border: 1px solid #ccc;
    padding: 0.6rem 0.9rem;
    margin-bottom: 0.5rem;
    border-radius: 4px;
    page-break-inside: avoid;
    break-inside: avoid;
  }
  #printSheet .ps-fc strong { display: block; margin-bottom: 0.2rem; }
  #printSheet .ps-term {
    page-break-inside: avoid;
    break-inside: avoid;
    margin-bottom: 0.4rem;
  }
  #printSheet .ps-term dt { font-weight: bold; }
  #printSheet .ps-term dd { margin-left: 1rem; color: #333; }
  #printSheet dl {
    page-break-inside: auto;
    break-inside: auto;
    orphans: 3;
    widows: 3;
  }
  #printSheet p {
    orphans: 3;
    widows: 3;
  }
  #printSheet h2 + * { page-break-before: avoid; break-before: avoid; }
  #printSheet ul, #printSheet ol {
    page-break-inside: auto;
    break-inside: auto;
    orphans: 3;
    widows: 3;
  }
  #printSheet ul > li,
  #printSheet ol > li {
    page-break-inside: avoid;
    break-inside: avoid;
  }
  @page {
    margin: 0.75in 0.75in 0.75in 0.75in;
  }

  body {
    margin: 0 !important;
    padding: 0 !important;
  }

  .study-sheet,
  .printable-study-sheet,
  .study-sheet-content,
  .quiz-sheet,
  .flashcard-sheet {
    margin: 0 !important;
    padding: 0 !important;
  }
}