/* ===================================================================
   AIQuest Enterprise LMS Portal — Master Production Stylesheet
   Ultra-Crisp, Modern Light Theme (Production Grade)
   =================================================================== */

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

:root {
  /* Surface & Background */
  --bg-page: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F1F5F9;
  --bg-hover: #F8FAFC;
  
  /* Borders */
  --border-light: #E2E8F0;
  --border-subtle: #EDF2F7;
  --border-strong: #CBD5E1;
  --border-focus: #3B82F6;

  /* Typography Colors */
  --text-heading: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-subtle: #94A3B8;

  /* Primary Brand - Sophisticated Royal Indigo / Sapphire */
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #EFF6FF;
  --primary-border: #BFDBFE;

  /* Secondary Accents */
  --accent-emerald: #059669;
  --accent-emerald-bg: #ECFDF5;
  --accent-emerald-border: #A7F3D0;

  --accent-amber: #D97706;
  --accent-amber-bg: #FFFBEB;
  --accent-amber-border: #FDE68A;

  --accent-violet: #7C3AED;
  --accent-violet-bg: #F5F3FF;
  --accent-violet-border: #DDD6FE;

  --accent-rose: #DC2626;
  --accent-rose-bg: #FEF2F2;
  --accent-rose-border: #FECACA;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 2px 8px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.03);
  --shadow-card-hover: 0 12px 24px -4px rgba(15, 23, 42, 0.08), 0 4px 8px -2px rgba(15, 23, 42, 0.04);

  /* Radii */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-body);
  line-height: 1.6;
  font-size: 15px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', 'Plus Jakarta Sans', sans-serif;
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

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

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

/* -------------------------------------------------------------
   Header & Navigation
   ------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  padding: 0.9rem 2rem;
  box-shadow: var(--shadow-xs);
}

.header-container {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
}

.brand-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -0.02em;
}

.brand-pill {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
  padding: 2px 7px;
  border-radius: var(--radius-full);
  margin-left: 6px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.4rem 0.2rem;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

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

/* -------------------------------------------------------------
   Main Container & Cards
   ------------------------------------------------------------- */

.main-content {
  flex: 1;
  max-width: 1320px;
  width: 100%;
  margin: 0 auto;
  padding: 2.2rem 2rem;
}

.app-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.app-card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-strong);
}

/* -------------------------------------------------------------
   Buttons
   ------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.65rem 1.35rem;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  font-family: inherit;
  line-height: 1.25;
}

.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #FFFFFF;
  border-color: var(--border-light);
  color: var(--text-heading);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--bg-subtle);
  border-color: var(--border-strong);
  color: var(--text-heading);
}

.btn-emerald {
  background: var(--accent-emerald);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(5, 150, 105, 0.25);
}

.btn-emerald:hover {
  background: #047857;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.35);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.45rem 0.95rem;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

/* -------------------------------------------------------------
   Status Badges & Pills
   ------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  font-size: 0.74rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.badge-blue, .badge-indigo {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.badge-emerald, .badge-success {
  background: var(--accent-emerald-bg);
  color: var(--accent-emerald);
  border: 1px solid var(--accent-emerald-border);
}

.badge-amber, .badge-warning {
  background: var(--accent-amber-bg);
  color: var(--accent-amber);
  border: 1px solid var(--accent-amber-border);
}

.badge-rose, .badge-danger {
  background: var(--accent-rose-bg);
  color: var(--accent-rose);
  border: 1px solid var(--accent-rose-border);
}

.badge-purple {
  background: var(--accent-violet-bg);
  color: var(--accent-violet);
  border: 1px solid var(--accent-violet-border);
}

/* -------------------------------------------------------------
   Forms & Inputs
   ------------------------------------------------------------- */

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 0.45rem;
}

.form-control, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-heading);
  font-size: 0.92rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
  box-shadow: var(--shadow-xs);
}

.form-control:focus, .form-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

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

textarea.form-control {
  min-height: 95px;
  resize: vertical;
}

/* -------------------------------------------------------------
   Grids
   ------------------------------------------------------------- */

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .grid-cols-4, .grid-cols-3, .grid-cols-2 { grid-template-columns: 1fr; }
  .main-content { padding: 1.5rem 1rem; }
  .site-header { padding: 0.75rem 1rem; }
  .nav-menu { display: none; }
}

/* -------------------------------------------------------------
   Statistic Cards
   ------------------------------------------------------------- */

.stat-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.stat-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.stat-value {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-heading);
  margin: 0.35rem 0;
  line-height: 1.1;
}

.stat-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* -------------------------------------------------------------
   Tables
   ------------------------------------------------------------- */

.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  background: #FFFFFF;
}

.data-table th {
  padding: 0.85rem 1.15rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-subtle);
}

.data-table td {
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-body);
  font-size: 0.9rem;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background: var(--bg-hover);
}

/* -------------------------------------------------------------
   Tabs
   ------------------------------------------------------------- */

.tab-nav {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 1.75rem;
  overflow-x: auto;
}

.tab-btn {
  padding: 0.75rem 1.25rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--text-heading);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* -------------------------------------------------------------
   Progress Bars
   ------------------------------------------------------------- */

.progress-track {
  width: 100%;
  height: 8px;
  background: var(--bg-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 8px 0;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #2563EB 0%, #3B82F6 100%);
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

/* -------------------------------------------------------------
   Alerts
   ------------------------------------------------------------- */

.alert {
  padding: 0.9rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 500;
}

.alert-success {
  background: var(--accent-emerald-bg);
  border: 1px solid var(--accent-emerald-border);
  color: #065F46;
}

.alert-error, .alert-danger {
  background: var(--accent-rose-bg);
  border: 1px solid var(--accent-rose-border);
  color: #991B1B;
}

.alert-info {
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  color: #1E40AF;
}

/* -------------------------------------------------------------
   Footer
   ------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--border-light);
  background: #FFFFFF;
  padding: 2.5rem 2rem;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: auto;
}

.footer-container {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

/* -------------------------------------------------------------
   Flaticon UIcons Global Integration
   ------------------------------------------------------------- */
i.fi, span.fi {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  line-height: 1;
}
.admin-nav-link i.fi {
  font-size: 1.15rem;
  width: 20px;
  margin-right: 2px;
}
.btn i.fi {
  font-size: 0.95em;
  margin-right: 4px;
}
.brand-icon i.fi {
  font-size: 1.25rem;
}