/* ═══════════════════════════════════════════════════════════════════
   Jeff Vreeland Course Platform — main.css
   Brand system: Playfair Display + Source Sans 3 · Red · Cream · Near-black
   ═══════════════════════════════════════════════════════════════════ */

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

/* ── Brand tokens ───────────────────────────────────────────────── */

:root {
  /* Colors */
  --color-bg:            #ffffff;
  --color-surface:       #ffffff;
  --color-cream:         #f9f6f1;
  --color-border:        #e4ddd5;
  --color-text:          #2a2a2a;
  --color-text-muted:    #6b6b6b;
  --color-black:         #121212;
  --color-primary:       #a41f37;
  --color-primary-hover: #c8344f;

  /* Semantic alert colors */
  --color-error-bg:      #fef2f2;
  --color-error-text:    #991b1b;
  --color-error-border:  #fca5a5;
  --color-success-bg:    #f0fdf4;
  --color-success-text:  #166534;
  --color-success-border:#86efac;
  --color-info-bg:       #f9f6f1;
  --color-info-text:     #2a2a2a;
  --color-info-border:   #e4ddd5;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Source Sans 3', Inter, Arial, sans-serif;

  /* Radii */
  --radius:    8px;
  --radius-sm: 4px;

  /* Shadows */
  --shadow:       0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
  --shadow-hover: 0 8px 32px rgba(0,0,0,.08);

  /* Layout */
  --nav-height: 64px;
}

/* ── Base ───────────────────────────────────────────────────────── */

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1, h2 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-black);
}

h3, h4, h5, h6 {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-black);
}

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

/* ── Navigation ─────────────────────────────────────────────────── */

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: var(--nav-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand { text-decoration: none; display: flex; align-items: center; }
.nav-brand:hover { text-decoration: none; opacity: .85; }
.nav-logo { height: 36px; width: auto; display: block; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 15px;
}
.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 400;
  transition: color .15s;
}
.nav-links a:hover { color: var(--color-primary); text-decoration: none; }

/* ── Layout ─────────────────────────────────────────────────────── */

.main { padding: 40px 24px; }

.container {
  max-width: 1100px;
  margin: 0 auto;
}

/* ── Auth card ──────────────────────────────────────────────────── */

.auth-card {
  max-width: 440px;
  margin: 56px auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 44px;
  box-shadow: var(--shadow);
}

.auth-card h1 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--color-black);
}

.auth-footer {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-text-muted);
  text-align: center;
}

/* ── Form elements ──────────────────────────────────────────────── */

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
  letter-spacing: .01em;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font-body);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color .15s, box-shadow .15s;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(164,31,55,.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* ── Buttons ────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  background: var(--color-primary);
  color: #fff;
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font-body);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s, transform .1s;
  letter-spacing: .01em;
}
.btn:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-full { width: 100%; margin-top: 8px; }

.btn-sm {
  padding: 7px 16px;
  font-size: 14px;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
  transform: translateY(-1px);
}

.btn-danger {
  background: #b91c1c;
  color: #fff;
  border: 1.5px solid #b91c1c;
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 14px;
  font-family: var(--font-body);
  font-weight: 600;
  cursor: pointer;
}
.btn-danger:hover { background: #991b1b; border-color: #991b1b; }

.btn-completed {
  background: #166534;
  color: #fff;
  border: 1.5px solid #166534;
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  font-size: 15px;
  font-family: var(--font-body);
  font-weight: 600;
  cursor: default;
  display: inline-flex;
  align-items: center;
  opacity: .9;
}

.btn-link {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 14px;
  cursor: pointer;
  padding: 0;
  font-family: var(--font-body);
  text-decoration: none;
}
.btn-link:hover { color: var(--color-primary-hover); text-decoration: underline; }
.btn-link-danger { color: #b91c1c; }
.btn-link-danger:hover { color: #991b1b; }

.btn-group { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ── Alerts ─────────────────────────────────────────────────────── */

.alert {
  padding: 13px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 20px;
  border: 1px solid transparent;
  line-height: 1.5;
}
.alert-error   { background: var(--color-error-bg);   color: var(--color-error-text);   border-color: var(--color-error-border); }
.alert-success { background: var(--color-success-bg); color: var(--color-success-text); border-color: var(--color-success-border); }
.alert-info    { background: var(--color-info-bg);    color: var(--color-info-text);    border-color: var(--color-info-border); }

/* ── Utilities ──────────────────────────────────────────────────── */

.text-muted { color: var(--color-text-muted); }
code {
  font-family: ui-monospace, 'Cascadia Code', monospace;
  font-size: 13px;
  color: var(--color-text-muted);
  background: var(--color-cream);
  padding: 1px 5px;
  border-radius: 3px;
}

/* ── Badges ─────────────────────────────────────────────────────── */

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
}
.badge-green { background: #dcfce7; color: #166534; }
.badge-gray  { background: #f3f4f6; color: #4b5563; }
.badge-blue  { background: var(--color-cream); color: var(--color-primary); border: 1px solid var(--color-border); }
.badge-xs    { font-size: 11px; padding: 1px 6px; }
.count-badge { font-size: 15px; font-weight: 400; color: var(--color-text-muted); margin-left: 6px; }

/* ── Forms (extended) ───────────────────────────────────────────── */

.field-check label { display: flex; align-items: center; gap: 8px; font-weight: 400; cursor: pointer; }
.field-check input[type="checkbox"] { width: auto; }
.form-card { max-width: 560px; }
.form-actions { display: flex; align-items: center; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.inline-form { padding: 16px; }
.inline-form .field { margin-bottom: 12px; }

/* ── Table ──────────────────────────────────────────────────────── */

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-top: 12px;
}
.table th {
  text-align: left;
  padding: 9px 14px;
  border-bottom: 2px solid var(--color-border);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-muted);
  font-family: var(--font-body);
}
.table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
.table-compact td { padding: 7px 10px; }
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: var(--color-cream); }
.td-actions { display: flex; gap: 8px; align-items: center; font-size: 13px; white-space: nowrap; }

/* ── Breadcrumb ─────────────────────────────────────────────────── */

.breadcrumb {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); text-decoration: none; }

/* ── Section header ─────────────────────────────────────────────── */

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 28px 0 14px;
  flex-wrap: wrap;
  gap: 8px;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
}

/* ── Toggle buttons ─────────────────────────────────────────────── */

.toggle-btn {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 3px 10px;
  font-size: 12px;
  font-family: var(--font-body);
  cursor: pointer;
  font-weight: 600;
}
.toggle-on  { background: #dcfce7; color: #166534; border-color: #86efac; }
.toggle-off { background: var(--color-cream); color: var(--color-text-muted); }
.toggle-on:hover  { background: #bbf7d0; }
.toggle-off:hover { background: var(--color-border); }

/* ── Admin layout ───────────────────────────────────────────────── */

.admin-layout {
  display: flex;
  min-height: calc(100vh - var(--nav-height));
}

.admin-sidebar {
  width: 210px;
  flex-shrink: 0;
  background: var(--color-black);
  padding: 28px 0;
}
.admin-sidebar-label {
  padding: 0 22px 10px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: rgba(255,255,255,.35);
  font-family: var(--font-body);
}
.admin-sidebar nav { display: flex; flex-direction: column; }
.admin-sidebar nav a {
  padding: 9px 22px;
  font-size: 14px;
  font-family: var(--font-body);
  color: rgba(255,255,255,.65);
  text-decoration: none;
  transition: color .15s, background .15s;
}
.admin-sidebar nav a:hover { color: #fff; background: rgba(255,255,255,.07); text-decoration: none; }
.admin-sidebar-sep { border-top: 1px solid rgba(255,255,255,.1); margin: 14px 0; }
.admin-sidebar-sub { display: block; padding: 9px 22px; font-size: 13px; color: rgba(255,255,255,.38); }
.admin-sidebar-sub:hover { color: rgba(255,255,255,.7); text-decoration: none; }

.admin-main {
  flex: 1;
  padding: 36px 44px;
  max-width: 980px;
  background: var(--color-bg);
}
.admin-main h1 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-black);
}
.admin-main h2 {
  font-family: var(--font-display);
  font-size: 20px;
}

/* ── Stat cards ─────────────────────────────────────────────────── */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
  margin-bottom: 36px;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px 20px;
  text-align: center;
}
.stat-value {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  color: var(--color-black);
}
.stat-label { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; letter-spacing: .02em; }

/* ── Module block (admin course detail) ─────────────────────────── */

.module-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}
.module-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-border);
  gap: 12px;
}
.module-title { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; }
.module-index {
  width: 24px; height: 24px;
  background: var(--color-border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: var(--color-text-muted);
  flex-shrink: 0;
}
.add-link {
  display: block;
  padding: 9px 16px;
  font-size: 13px;
  color: var(--color-primary);
  border-top: 1px dashed var(--color-border);
  font-weight: 500;
}
.add-link:hover { background: var(--color-cream); text-decoration: none; }

.add-module-form {
  margin-top: 8px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.add-module-form summary {
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  list-style: none;
}
.add-module-form summary:hover { background: var(--color-cream); }

/* ── Course layout (student) ────────────────────────────────────── */

.course-layout {
  display: flex;
  min-height: calc(100vh - var(--nav-height));
}

.course-sidebar {
  width: 288px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
}
.sidebar-header {
  padding: 20px 18px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-cream);
}
.sidebar-header h2 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-black);
}
.sidebar-back {
  font-size: 13px;
  color: var(--color-text-muted);
  display: block;
  font-weight: 500;
  margin-bottom: 4px;
}
.sidebar-back:hover { color: var(--color-primary); text-decoration: none; }

.sidebar-nav { padding: 8px 0; }
.sidebar-module { margin-bottom: 4px; }
.sidebar-module-title {
  padding: 8px 18px 4px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--color-text-muted);
  margin-top: 8px;
}
.sidebar-lesson {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 18px;
  font-size: 14px;
  color: var(--color-text);
  text-decoration: none;
  transition: background .1s;
  border-left: 3px solid transparent;
}
.sidebar-lesson:hover { background: var(--color-cream); text-decoration: none; color: var(--color-text); }
.sidebar-lesson-active {
  background: var(--color-cream);
  color: var(--color-primary);
  font-weight: 600;
  border-left-color: var(--color-primary);
}
.sidebar-lesson-active:hover { background: #f2ece4; color: var(--color-primary); }
.sidebar-lesson-locked { color: var(--color-text-muted); cursor: default; }
.sidebar-lesson-done   { color: var(--color-text-muted); }

.lesson-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0;
}
.lesson-dot-active { background: var(--color-primary); }
.lesson-lock  { font-size: 12px; flex-shrink: 0; opacity: .55; }
.lesson-title { flex: 1; line-height: 1.35; }
.preview-tag {
  font-size: 11px;
  background: var(--color-cream);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  padding: 1px 7px;
  border-radius: 999px;
  flex-shrink: 0;
  font-weight: 600;
}

/* ── Course main content ────────────────────────────────────────── */

.course-main {
  flex: 1;
  padding: 36px 48px;
  max-width: 860px;
}
.course-welcome h1 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-black);
}
.course-welcome p { color: var(--color-text-muted); margin-bottom: 8px; }

/* ── Lesson player ──────────────────────────────────────────────── */

.lesson-header { margin-bottom: 22px; }
.lesson-module-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.lesson-header h1 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-black);
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--color-black);
  margin-bottom: 28px;
}
.video-wrapper iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

.video-placeholder {
  background: var(--color-cream);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 60px;
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

/* ── Upgrade wall ───────────────────────────────────────────────── */

.upgrade-box {
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 44px 40px;
  text-align: center;
  margin: 28px 0;
}
.upgrade-box h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-black);
}
.upgrade-box p { color: var(--color-text-muted); max-width: 400px; margin: 0 auto; }
.lock-icon { font-size: 36px; margin-bottom: 16px; opacity: .5; }

/* ── Lesson prev/next nav ───────────────────────────────────────── */

.lesson-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
  margin-top: 28px;
  gap: 16px;
}
.lesson-nav-btn {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  max-width: 45%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lesson-nav-btn:hover { color: var(--color-primary-hover); text-decoration: none; }
.lesson-nav-next { margin-left: auto; text-align: right; }

/* ── Progress bars ──────────────────────────────────────────────── */

.progress-bar {
  height: 5px;
  background: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 8px;
}
.progress-bar-lg { height: 9px; }
.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 999px;
  transition: width .4s ease;
}
.progress-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 5px;
  display: block;
}
.sidebar-progress { margin-top: 12px; }
.overall-progress { margin: 16px 0; }
.mod-progress-label {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-left: 6px;
  font-weight: 400;
}

/* ── Sidebar checkmarks ─────────────────────────────────────────── */

.lesson-check {
  font-size: 12px;
  color: #166534;
  flex-shrink: 0;
  font-weight: 700;
}
.lesson-check-active { color: var(--color-primary); }

/* ── Lesson actions ─────────────────────────────────────────────── */

.lesson-actions { margin-bottom: 28px; }

/* ── Downloads section ──────────────────────────────────────────── */

.downloads-section {
  margin-bottom: 28px;
  padding: 22px 26px;
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.downloads-title { font-size: 15px; font-weight: 700; margin-bottom: 14px; color: var(--color-black); }
.downloads-list  { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.download-item   { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.download-icon   { font-size: 16px; flex-shrink: 0; }
.download-name   { color: var(--color-primary); font-weight: 500; }
.download-name:hover { color: var(--color-primary-hover); }

/* ── Q&A section ────────────────────────────────────────────────── */

.qa-section {
  margin-bottom: 28px;
  padding: 24px 26px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.qa-title { font-size: 15px; font-weight: 700; margin-bottom: 18px; color: var(--color-black); }

/* ── Lesson notes (7.3) ─────────────────────────────────────────── */

.notes-section {
  margin-bottom: 28px;
  padding: 22px 26px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.notes-title { font-size: 15px; font-weight: 700; margin-bottom: 14px; color: var(--color-black); }
.notes-textarea {
  width: 100%;
  min-height: 120px;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-cream);
  resize: vertical;
  transition: border-color .15s;
}
.notes-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(164,31,55,.09);
  background: var(--color-surface);
}
.notes-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 7px;
}
.notes-status { font-size: 12px; color: var(--color-text-muted); }
.notes-count  { font-size: 12px; color: var(--color-text-muted); }

/* ── Public comments (7.8) ──────────────────────────────────────── */

.comments-section {
  margin-bottom: 28px;
  padding: 22px 26px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.comments-title { font-size: 15px; font-weight: 700; margin-bottom: 18px; color: var(--color-black); }

.comment-form { margin-bottom: 24px; }
.comment-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-cream);
  resize: vertical;
  transition: border-color .15s;
}
.comment-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(164,31,55,.09);
  background: var(--color-surface);
}
.comment-error { font-size: 13px; color: var(--color-error-text); }

.comment-item {
  padding: 14px 0;
  border-top: 1px solid var(--color-border);
}
.comment-item:first-child { border-top: none; }
.comment-author { font-size: 13px; font-weight: 700; margin-bottom: 4px; color: var(--color-black); }
.comment-body { font-size: 14px; line-height: 1.55; white-space: pre-wrap; }
.comment-date { font-size: 12px; color: var(--color-text-muted); margin-top: 5px; }

/* ── Announcement banner (7.7) ──────────────────────────────────── */

.announcement-banner {
  background: #fef9c3;
  border-bottom: 1px solid #fde047;
  color: #713f12;
  padding: 11px 28px;
  font-size: 14px;
  text-align: center;
  font-family: var(--font-body);
}

/* ── Referral widget (7.6) ──────────────────────────────────────── */

.referral-widget {
  margin-top: 32px;
  padding: 22px 26px;
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.referral-title { font-size: 15px; font-weight: 700; margin-bottom: 4px; color: var(--color-black); }
.referral-link-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.referral-input {
  flex: 1;
  min-width: 0;
  padding: 9px 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-body);
  background: var(--color-surface);
  color: var(--color-text);
}

/* ── Mobile sidebar toggle ──────────────────────────────────────── */

.sidebar-toggle {
  display: none;
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 100;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 11px 20px;
  font-size: 14px;
  font-family: var(--font-body);
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 3px 12px rgba(164,31,55,.3);
  min-height: 44px;
}

/* ── Responsive ─────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .nav { padding: 0 20px; height: 56px; }
  :root { --nav-height: 56px; }

  .course-layout { display: block; }

  .course-sidebar {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--nav-height));
    z-index: 50;
    transform: translateX(-100%);
    transition: transform .25s ease;
  }
  .course-sidebar.sidebar-open { transform: translateX(0); }

  .sidebar-toggle { display: flex; }

  .course-main { padding: 22px 18px; }

  .admin-layout { flex-direction: column; }
  .admin-sidebar {
    width: 100%;
    padding: 10px 0;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
  .admin-sidebar-label { display: none; }
  .admin-sidebar nav { flex-direction: row; flex-wrap: wrap; }
  .admin-sidebar nav a { padding: 8px 14px; font-size: 13px; }
  .admin-sidebar-sep { display: none; }
  .admin-sidebar-sub { padding: 8px 14px; }
  .admin-main { padding: 22px 18px; }

  .form-row { grid-template-columns: 1fr; }
  .auth-card { margin: 28px 16px; padding: 28px 22px; }
}

@media (max-width: 480px) {
  .btn, button.btn { min-height: 44px; }
  .announcement-banner { padding: 10px 16px; font-size: 13px; }
  .referral-link-row { flex-direction: column; align-items: stretch; }
  .referral-input { width: 100%; }
  .notes-textarea { min-height: 100px; }
  .lesson-nav { flex-direction: column; gap: 12px; }
  .lesson-nav-btn { max-width: 100%; }
  .lesson-nav-next { margin-left: 0; text-align: left; }
  .course-main { padding: 18px 14px; }
}

/* ── Site footer ────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 20px 32px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  background: var(--color-surface);
  font-family: var(--font-body);
}

/* ── Admin user detail (8.1) ────────────────────────────────────── */

.user-detail-card {
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.user-detail-row {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
}
.user-detail-label {
  font-weight: 600;
  width: 80px;
  flex-shrink: 0;
  color: var(--color-text-muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* ── Feature toggle switches (8.3) ─────────────────────────────── */

.settings-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 680px;
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.settings-row:last-child { border-bottom: none; }
.settings-row:hover { background: var(--color-cream); }
.settings-info { flex: 1; }
.settings-label { font-size: 15px; font-weight: 600; color: var(--color-black); margin-bottom: 2px; }
.settings-desc  { font-size: 13px; color: var(--color-text-muted); line-height: 1.45; }
.settings-updated { font-size: 11px; color: var(--color-text-muted); margin-top: 4px; }

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 26px;
  flex-shrink: 0;
  cursor: pointer;
}
.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--color-border);
  border-radius: 26px;
  transition: background .2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform .2s;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.toggle-switch input:checked + .toggle-slider { background: var(--color-primary); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }
.toggle-switch input:focus-visible + .toggle-slider {
  box-shadow: 0 0 0 3px rgba(164,31,55,.2);
}

/* ── Partner / affiliate admin (Phase 9) ────────────────────────── */

.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.admin-table th {
  text-align: left;
  padding: 9px 12px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-muted);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}
.admin-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.admin-table tbody tr:hover { background: var(--color-cream); }

.form-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  margin: 4px 0 0;
}