/* ============================================
   GFAVIP Learning — Emerald Editorial Theme
   ============================================ */

/* --- Google Fonts loaded via <link> in base.html --- */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
  /* Brand colors */
  --dark-green: #124e2c;
  --light-green: #29b973;
  --blue: #15689e;
  --white: #ffffff;
  --grey: #d2d0d2;

  /* Extended palette */
  --dark-green-hover: #0d3b21;
  --light-green-hover: #22a366;
  --blue-light: rgba(21, 104, 158, 0.08);
  --green-light: rgba(41, 185, 115, 0.1);
  --green-subtle: rgba(18, 78, 44, 0.06);

  /* Surfaces */
  --bg-body: #faf9f6;
  --bg-white: #ffffff;
  --bg-alt: #f5f4f1;
  --bg-elevated: #f8f7f4;

  /* Text */
  --text-primary: #1a1a1a;
  --text-secondary: #5a5a5a;
  --text-muted: #8a8a8a;

  /* Borders */
  --border: #e8e6e1;
  --border-light: #f0eeea;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(18, 78, 44, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(18, 78, 44, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 8px 30px rgba(18, 78, 44, 0.1), 0 4px 8px rgba(0, 0, 0, 0.04);

  /* Radius */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-pill: 50px;

  /* Typography */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Transitions */
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== GLOBAL RESETS ===== */
body {
  font-family: var(--font-body) !important;
  background-color: var(--bg-body) !important;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--font-display);
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

a {
  color: var(--blue);
  transition: color var(--transition);
}

a:hover {
  color: var(--dark-green);
}

::selection {
  background: rgba(41, 185, 115, 0.2);
  color: var(--text-primary);
}

/* ===== NAVIGATION ===== */
.navbar {
  background: rgba(250, 249, 246, 0.85) !important;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border) !important;
  padding: 0 1.5rem !important;
  min-height: 64px;
  transition: background var(--transition);
}

.navbar-brand {
  display: flex !important;
  align-items: center !important;
  gap: 10px;
  color: var(--dark-green) !important;
  font-family: var(--font-display);
  font-size: 1.15rem !important;
  letter-spacing: -0.01em;
}

.navbar-brand:hover {
  color: var(--dark-green) !important;
}

.nav-brand-icon {
  width: 32px;
  height: 32px;
  background: var(--dark-green);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 14px;
  font-family: var(--font-body);
  flex-shrink: 0;
}

.navbar-nav .nav-link {
  color: var(--text-secondary) !important;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  font-family: var(--font-body);
}

.navbar-nav .nav-link:hover {
  color: var(--dark-green) !important;
  background: var(--green-subtle);
}

.navbar-nav .nav-link.active {
  color: var(--dark-green) !important;
}

.navbar-toggler {
  border: 1px solid var(--border) !important;
  padding: 4px 8px !important;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23124e2c' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* Nav avatar */
.nav-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--light-green), var(--dark-green));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 13px;
  font-family: var(--font-body);
}

/* ===== BADGES ===== */
.badge {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: 20px;
  padding: 4px 10px;
}

.bg-primary {
  background-color: var(--blue) !important;
}

.bg-success {
  background-color: var(--light-green) !important;
}

.bg-danger {
  background-color: #c44d30 !important;
}

.bg-warning {
  background-color: #d4a017 !important;
}

.bg-info {
  background-color: var(--blue) !important;
}

.bg-secondary {
  background-color: var(--text-muted) !important;
}

.badge.bg-success {
  background-color: var(--light-green) !important;
}

.badge.bg-danger {
  background-color: #c44d30 !important;
}

/* ===== BUTTONS ===== */
.btn {
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 10px 24px;
  font-size: 0.9rem;
  transition: all var(--transition);
  border: none;
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--dark-green) !important;
  border-color: var(--dark-green) !important;
  color: white !important;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--dark-green-hover) !important;
  border-color: var(--dark-green-hover) !important;
  box-shadow: 0 4px 16px rgba(18, 78, 44, 0.25);
  transform: translateY(-1px);
}

.btn-success {
  background-color: var(--light-green) !important;
  border-color: var(--light-green) !important;
  color: white !important;
}

.btn-success:hover {
  background-color: var(--light-green-hover) !important;
  border-color: var(--light-green-hover) !important;
  box-shadow: 0 4px 16px rgba(41, 185, 115, 0.25);
  transform: translateY(-1px);
}

.btn-danger {
  background-color: #c44d30 !important;
  border-color: #c44d30 !important;
}

.btn-danger:hover {
  background-color: #a9412a !important;
  border-color: #a9412a !important;
}

.btn-info {
  background-color: var(--blue) !important;
  border-color: var(--blue) !important;
  color: white !important;
}

.btn-info:hover {
  background-color: #12587f !important;
  border-color: #12587f !important;
  color: white !important;
}

.btn-secondary {
  background-color: transparent !important;
  border: 1.5px solid var(--border) !important;
  color: var(--text-primary) !important;
}

.btn-secondary:hover {
  border-color: var(--dark-green) !important;
  background-color: var(--green-subtle) !important;
  color: var(--dark-green) !important;
}

.btn-outline-primary {
  border: 1.5px solid var(--dark-green) !important;
  color: var(--dark-green) !important;
  background: transparent !important;
}

.btn-outline-primary:hover,
.btn-outline-primary.active {
  background: var(--dark-green) !important;
  color: white !important;
}

.btn-outline-secondary {
  border: 1.5px solid var(--border) !important;
  color: var(--text-secondary) !important;
  background: transparent !important;
}

.btn-outline-secondary:hover {
  border-color: var(--dark-green) !important;
  color: var(--dark-green) !important;
}

.btn-outline-success {
  border: 1.5px solid var(--light-green) !important;
  color: var(--light-green) !important;
  background: transparent !important;
}

.btn-outline-success:hover,
.btn-outline-success.active {
  background: var(--light-green) !important;
  color: white !important;
}

.btn-outline-danger {
  border: 1.5px solid #c44d30 !important;
  color: #c44d30 !important;
  background: transparent !important;
}

.btn-outline-danger:hover,
.btn-outline-danger.active {
  background: #c44d30 !important;
  color: white !important;
}

.btn-close {
  opacity: 0.5;
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: all var(--transition);
}

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

.card-header {
  background: var(--bg-elevated) !important;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--dark-green) !important;
  padding: 1rem 1.25rem;
}

/* Remove Bootstrap's colored card headers */
.card-header.bg-primary,
.card-header.bg-success,
.card-header.bg-info,
.card-header.bg-warning,
.card-header.bg-danger {
  background: var(--bg-elevated) !important;
  color: var(--dark-green) !important;
}

.card-header.bg-primary.text-white,
.card-header.bg-success.text-white,
.card-header.bg-info.text-white {
  color: var(--dark-green) !important;
}

.card-body {
  padding: 1.25rem;
}

.card-title {
  font-family: var(--font-display);
}

.card-img-top {
  border-radius: var(--radius) var(--radius) 0 0;
}

/* ===== TABS ===== */
.nav-tabs {
  border-bottom: 1px solid var(--border);
  gap: 0;
}

.nav-tabs .nav-link {
  border: none !important;
  border-radius: 0 !important;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 12px 20px;
  position: relative;
  transition: color var(--transition);
}

.nav-tabs .nav-link:hover {
  color: var(--text-secondary);
  background: none;
}

.nav-tabs .nav-link.active {
  color: var(--dark-green) !important;
  font-weight: 600;
  background: none !important;
}

.nav-tabs .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--light-green);
  border-radius: 1px 1px 0 0;
}

.tab-content {
  padding-top: 1.5rem;
}

/* ===== FORMS ===== */
.form-control {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-white);
  transition: all var(--transition);
}

.form-control:focus {
  border-color: var(--light-green);
  box-shadow: 0 0 0 3px rgba(41, 185, 115, 0.12);
  background: var(--bg-white);
}

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

.form-label {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-primary);
  margin-bottom: 6px;
}

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

.form-select {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--font-body);
}

.form-select:focus {
  border-color: var(--light-green);
  box-shadow: 0 0 0 3px rgba(41, 185, 115, 0.12);
}

.form-check-input:checked {
  background-color: var(--light-green);
  border-color: var(--light-green);
}

.form-check-input:focus {
  box-shadow: 0 0 0 3px rgba(41, 185, 115, 0.12);
}

/* ===== PROGRESS BARS ===== */
.progress {
  height: 8px;
  background: var(--bg-alt);
  border-radius: 20px;
  overflow: hidden;
}

.progress-bar {
  background: linear-gradient(90deg, var(--light-green), var(--dark-green)) !important;
  border-radius: 20px;
  font-size: 0;
  line-height: 8px;
  transition: width 0.6s ease;
}

/* ===== ALERTS ===== */
.alert {
  border-radius: var(--radius);
  border: 1px solid;
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.alert-success {
  background: rgba(41, 185, 115, 0.08);
  border-color: rgba(41, 185, 115, 0.2);
  color: var(--dark-green);
}

.alert-danger {
  background: rgba(196, 77, 48, 0.08);
  border-color: rgba(196, 77, 48, 0.2);
  color: #8b2f18;
}

.alert-warning {
  background: rgba(212, 160, 23, 0.08);
  border-color: rgba(212, 160, 23, 0.2);
  color: #7a5a00;
}

.alert-info {
  background: rgba(21, 104, 158, 0.06);
  border-color: rgba(21, 104, 158, 0.15);
  color: var(--blue);
}

/* ===== TABLES ===== */
.table {
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.table thead th {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
  padding: 10px 12px;
}

.table td {
  padding: 12px;
  border-color: var(--border-light);
  vertical-align: middle;
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
  background-color: var(--bg-elevated);
}

/* ===== MODALS ===== */
.modal-content {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.modal-header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--dark-green);
}

.modal-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 1.25rem;
}

/* ===== BREADCRUMBS ===== */
.breadcrumb {
  font-size: 0.85rem;
  background: none;
  padding: 0;
  margin-bottom: 0.75rem;
}

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

.breadcrumb-item.active {
  color: var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
  color: var(--text-muted);
}

/* ===== LIST GROUPS ===== */
.list-group-item {
  border-color: var(--border);
  font-family: var(--font-body);
  transition: all var(--transition);
}

.list-group-item-action:hover {
  background: var(--bg-elevated);
}

.list-group-item.active {
  background-color: var(--green-subtle) !important;
  border-color: var(--border) !important;
  color: var(--dark-green) !important;
  font-weight: 600;
}

.list-group-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--light-green);
  border-radius: 0 2px 2px 0;
}

/* ===== BUTTON GROUP (filter toggles) ===== */
.btn-group .btn {
  border-radius: var(--radius-pill) !important;
  margin: 0 2px;
}

/* ===== SPINNERS ===== */
.spinner-border {
  color: var(--light-green) !important;
}

/* ===== DROPDOWN ===== */
.dropdown-menu {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.dropdown-item:hover {
  background: var(--bg-elevated);
}

/* ===== MAIN CONTENT AREA ===== */
main.container {
  max-width: 1200px;
}

/* ===== HERO SECTION (index.html) ===== */
.hero-section {
  padding: 5rem 0 3rem;
  text-align: center;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--light-green);
  margin-bottom: 1.2rem;
}

.hero-section h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  line-height: 1.1;
  color: var(--dark-green);
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
}

.hero-section h1 em {
  color: var(--blue);
  font-style: italic;
}

.hero-section .lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  justify-content: center;
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--dark-green);
}

.hero-stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===== FEATURE CARDS ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.feature-icon.green {
  background: var(--green-light);
  color: var(--light-green);
}

.feature-icon.blue {
  background: var(--blue-light);
  color: var(--blue);
}

.feature-icon.dark {
  background: var(--green-subtle);
  color: var(--dark-green);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 6px;
  color: var(--dark-green);
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ===== COURSE CARDS (JS-generated) ===== */
.course-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: linear-gradient(135deg, #e8f5ee 0%, #dfeef5 100%);
  border-radius: var(--radius) var(--radius) 0 0;
}

/* ===== ENROLLED CARD ===== */
.enrolled-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.25rem;
  display: flex;
  gap: 1.25rem;
  align-items: center;
  transition: all var(--transition);
  margin-bottom: 0.75rem;
}

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

.enrolled-card-thumb {
  width: 80px;
  height: 80px;
  border-radius: 10px;
  background: linear-gradient(135deg, #e8f5ee, #dfeef5);
  flex-shrink: 0;
  object-fit: cover;
}

.enrolled-card-info {
  flex: 1;
  min-width: 0;
}

.enrolled-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.progress-thin {
  height: 8px;
  background: var(--bg-alt);
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 6px;
}

.progress-thin-fill {
  height: 100%;
  border-radius: 20px;
  background: linear-gradient(90deg, var(--light-green), var(--dark-green));
  transition: width 0.6s ease;
}

.progress-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===== SECTION HEADERS ===== */
.section-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--dark-green);
  letter-spacing: -0.01em;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== LESSON VIEW SIDEBAR ===== */
.module-header {
  background: var(--bg-elevated) !important;
  padding: 10px 1.25rem;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.lesson-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 1.25rem;
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  transition: background var(--transition);
  text-decoration: none;
  color: var(--text-primary);
}

.lesson-item:hover {
  background: var(--bg-elevated) !important;
  color: var(--text-primary);
}

.lesson-item.active {
  background: var(--green-subtle) !important;
  border-left: 3px solid var(--light-green);
  padding-left: calc(1.25rem - 3px);
  color: var(--dark-green) !important;
}

.lesson-item.active .text-muted {
  color: var(--dark-green) !important;
  opacity: 0.6;
}

/* ===== VIDEO CONTAINER ===== */
.protected-video {
  width: 100%;
  max-width: 100%;
  border-radius: var(--radius);
  background: #000;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--dark-green) !important;
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0 2rem;
}

.site-footer h5 {
  font-family: var(--font-display);
  color: white;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.site-footer .footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: white;
  margin-bottom: 8px;
}

.site-footer .footer-desc {
  font-size: 0.85rem;
  line-height: 1.6;
  max-width: 280px;
  color: rgba(255, 255, 255, 0.6);
}

.site-footer .footer-heading {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 12px;
  font-family: var(--font-body);
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer ul li {
  margin-bottom: 8px;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.7) !important;
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition);
}

.site-footer a:hover {
  color: var(--light-green) !important;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  margin-top: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== DOCS PAGES ===== */
.docs-sidebar .list-group-item {
  border-radius: 0;
  border-left: none;
  border-right: none;
  font-size: 0.9rem;
  position: relative;
}

pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-size: 0.85rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

code {
  color: var(--dark-green);
  font-size: 0.88em;
}

/* ===== PROFILE PAGE ===== */
.profile-section-header {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--dark-green);
  padding: 1rem 1.25rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  margin: 0;
}

/* ===== EMPTY STATES ===== */
.text-muted {
  color: var(--text-muted) !important;
}

/* ===== SCROLLABLE TABS (all sizes) ===== */
.nav-tabs {
  flex-wrap: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.nav-tabs .nav-item {
  flex-shrink: 0;
}

/* ===== RESPONSIVE: Tablet (max-width: 992px) ===== */
@media (max-width: 992px) {
  main.container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero-stats {
    gap: 2rem;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  /* Docs sidebar: stack above content */
  .docs-sidebar {
    position: static !important;
    margin-bottom: 1.5rem;
  }
}

/* ===== RESPONSIVE: Large phones (max-width: 768px) ===== */
@media (max-width: 768px) {
  /* Typography scale */
  h1, .h1 { font-size: 1.75rem; }
  h2, .h2 { font-size: 1.4rem; }
  h3, .h3 { font-size: 1.15rem; }

  .section-title { font-size: 1.4rem; }

  /* Navigation */
  .navbar {
    padding: 0 0.75rem !important;
    min-height: 56px;
  }

  .navbar-brand {
    font-size: 1rem !important;
  }

  .nav-brand-icon {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .nav-avatar {
    width: 30px;
    height: 30px;
    font-size: 11px;
  }

  /* Tabs: compact for mobile */
  .nav-tabs .nav-link {
    padding: 10px 14px;
    font-size: 0.82rem;
    white-space: nowrap;
  }

  /* Hero */
  .hero-section {
    padding: 2.5rem 0 2rem;
  }

  .hero-section h1 {
    font-size: 2rem;
  }

  .hero-section .lead {
    font-size: 1rem;
  }

  .hero-eyebrow {
    font-size: 0.72rem;
  }

  .hero-stats {
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-stat-value {
    font-size: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  /* Features */
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .feature-card {
    padding: 1.5rem;
  }

  /* Cards */
  .card-body {
    padding: 1rem;
  }

  .card-header {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }

  /* Enrolled cards: stack vertical */
  .enrolled-card {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .enrolled-card-thumb {
    width: 100%;
    height: 140px;
    border-radius: var(--radius-sm);
  }

  .enrolled-card .flex-shrink-0 {
    align-self: flex-start;
  }

  /* Course view: sidebar below content */
  .lesson-sidebar-col {
    order: 2;
    margin-top: 1.5rem;
  }

  .lesson-sidebar-col .card {
    position: static !important;
    max-height: none !important;
  }

  /* Module/lesson items: bigger touch targets */
  .module-header {
    padding: 12px 1rem;
    font-size: 0.8rem;
  }

  .lesson-item {
    padding: 14px 1rem;
    min-height: 48px;
  }

  /* Progress bars */
  .progress-thin {
    height: 6px;
  }

  /* Tables: tighter */
  .table thead th {
    font-size: 0.72rem;
    padding: 8px;
  }

  .table td {
    padding: 10px 8px;
    font-size: 0.85rem;
  }

  /* Footer */
  .site-footer {
    padding: 2rem 0 1.5rem;
  }

  .site-footer .row > div {
    margin-bottom: 1.5rem;
  }

  .footer-desc {
    max-width: 100%;
  }

  /* Forms */
  .form-control {
    padding: 10px 12px;
    font-size: 0.88rem;
  }

  /* Modals */
  .modal-dialog {
    margin: 0.5rem;
  }

  .modal-content {
    border-radius: var(--radius);
  }

  /* Buttons */
  .btn {
    padding: 10px 20px;
    font-size: 0.85rem;
  }

  .btn-lg {
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  /* Button groups: wrap */
  .btn-group,
  .d-flex.gap-2 {
    flex-wrap: wrap;
  }

  /* Filter buttons */
  .btn-group .btn {
    font-size: 0.78rem;
    padding: 6px 12px;
  }

  /* Admin cards: stack header content */
  .card-header .d-flex {
    flex-direction: column;
    gap: 6px;
  }

  /* Cert/profit share cards: stack flex on mobile */
  .card-body > .d-flex.justify-content-between.align-items-center {
    flex-direction: column;
    align-items: flex-start !important;
    gap: 0.75rem;
  }

  /* Alerts */
  .alert {
    font-size: 0.85rem;
    padding: 0.75rem 1rem;
  }

  /* Code blocks: tighter on mobile */
  pre {
    padding: 0.75rem;
    font-size: 0.78rem;
  }

  /* Apply form card padding */
  .apply-form-body {
    padding: 1.25rem !important;
  }

  /* Accordion buttons on mobile */
  .accordion-button {
    font-size: 0.88rem;
    padding: 0.75rem 1rem;
  }
}

/* ===== RESPONSIVE: Small phones (max-width: 480px) ===== */
@media (max-width: 480px) {
  /* Extra tight typography */
  h1, .h1 { font-size: 1.5rem; }
  h2, .h2 { font-size: 1.25rem; }

  .section-title { font-size: 1.25rem; }

  .hero-section h1 {
    font-size: 1.7rem;
  }

  .hero-section .lead {
    font-size: 0.92rem;
  }

  /* Nav: minimal */
  .navbar-brand span {
    font-size: 0.9rem !important;
  }

  /* Tabs: even more compact */
  .nav-tabs .nav-link {
    padding: 8px 10px;
    font-size: 0.78rem;
  }

  /* Hero stats: 2-col grid */
  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    text-align: center;
  }

  .hero-stat-value {
    font-size: 1.3rem;
  }

  .hero-stat-label {
    font-size: 0.72rem;
  }

  /* Cards: tighter padding */
  .card-body {
    padding: 0.875rem;
  }

  /* Feature cards */
  .feature-card {
    padding: 1.25rem;
  }

  .feature-icon {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }

  /* Course card images */
  .course-card-img {
    height: 140px;
  }

  /* Enrolled card thumb */
  .enrolled-card-thumb {
    height: 100px;
  }

  /* Lesson items: bigger touch */
  .lesson-item {
    padding: 16px 1rem;
  }

  /* Footer: 2-col grid for links */
  .site-footer .row {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .site-footer .row > div:first-child {
    grid-column: 1 / -1;
  }

  /* Form buttons stack */
  .hero-actions,
  .apply-actions {
    flex-direction: column;
  }

  /* Profile label-value */
  .profile-label {
    margin-bottom: 2px;
  }

  /* Progress label */
  .progress-label {
    font-size: 0.72rem;
  }

  /* Admin/instructor: fixed-width inputs */
  input[style*="width: 120px"],
  input[style*="width:120px"] {
    width: 100% !important;
  }

  /* Admin profit share: stack input + button */
  .d-flex.gap-2.align-items-center:has(input[style*="width"]) {
    flex-wrap: wrap;
  }

  /* Thumbnail in admin cards */
  .admin-thumb {
    width: 60px !important;
    height: 45px !important;
    margin-left: 0.5rem !important;
  }

  /* Admin course card: stack on mobile */
  .course-card .d-flex.justify-content-between {
    flex-direction: column;
  }

  .course-card .admin-thumb {
    margin-left: 0 !important;
    margin-top: 0.75rem;
    width: 100% !important;
    height: 100px !important;
  }

  /* Action buttons: stack */
  .course-card .mt-3.d-flex.gap-2 {
    flex-direction: column;
  }

  .course-card .mt-3.d-flex.gap-2 .btn {
    width: 100%;
    text-align: center;
  }
}

/* ===== TRANSITIONS / MICRO-INTERACTIONS ===== */
.card,
.btn,
.nav-link,
.list-group-item,
.feature-card,
.enrolled-card {
  transition: all var(--transition);
}

/* Smooth scroll */
html {
  scroll-behavior: smooth;
}

/* Disable hover effects on touch devices */
@media (hover: none) {
  .card:hover {
    box-shadow: none;
    transform: none;
  }

  .feature-card:hover {
    box-shadow: none;
    transform: none;
  }

  .enrolled-card:hover {
    box-shadow: none;
    transform: none;
  }

  .btn:hover {
    transform: none;
  }
}