@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;1,400&family=Work+Sans:wght@300;400;500;600&display=swap');

:root {
  --cream: #F5F0E8;
  --cream-dark: #EDE7DB;
  --sage: #8B9A7B;
  --sage-dark: #6E7F60;
  --sage-light: #A8B49C;
  --gold: #B8A88A;
  --text: #2C2C2C;
  --text-mid: #6B6B60;
  --text-light: #9A9A8E;
  --card-bg: #FFFFFF;
  --card-border: #E8E2D6;
  --danger: #C45B5B;
  --danger-light: #F5E8E8;
  --success: #5B8C5A;
  --success-light: #E8F0E8;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --max-w: 1100px;
  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Work Sans', system-ui, sans-serif;
}

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

body {
  font-family: var(--sans);
  background: var(--cream);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--sage-dark); text-decoration: none; }
a:hover { color: var(--sage); }

img { max-width: 100%; height: auto; }

/* ── Nav ── */

.nav {
  background: var(--card-bg);
  border-bottom: 1px solid var(--card-border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--sage);
  font-style: italic;
  letter-spacing: -0.5px;
}
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mid);
  transition: color .2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--sage-dark); font-weight: 600; }

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--sage);
  color: #fff;
}
.btn-primary:hover { background: var(--sage-dark); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--sage-dark);
  border: 1.5px solid var(--sage);
}
.btn-outline:hover { background: var(--sage); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #a84a4a; color: #fff; }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-block { width: 100%; }

/* ── Container ── */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px;
}

/* ── Cards ── */

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

/* ── Course grid ── */

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.course-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
}
.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.course-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--cream-dark);
}
.course-card-img-placeholder {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--sage-light), var(--sage));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 48px;
  color: rgba(255,255,255,0.4);
  font-style: italic;
}
.course-card-body { padding: 24px; }
.course-card-title {
  font-family: var(--serif);
  font-size: 20px;
  margin-bottom: 8px;
}
.course-card-sub {
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 16px;
  line-height: 1.5;
}
.course-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.course-price {
  font-weight: 600;
  font-size: 18px;
  color: var(--sage-dark);
}
.course-price-free {
  color: var(--success);
  font-weight: 600;
  font-size: 14px;
}

/* ── Hero ── */

.hero {
  text-align: center;
  padding: 80px 24px 48px;
  max-width: 700px;
  margin: 0 auto;
}
.hero h1 {
  font-family: var(--serif);
  font-size: 42px;
  font-weight: 400;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.hero p {
  font-size: 17px;
  color: var(--text-mid);
  line-height: 1.7;
}

/* ── Course detail ── */

.course-hero {
  padding: 60px 24px;
  text-align: center;
  max-width: 750px;
  margin: 0 auto;
}
.course-hero h1 {
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 400;
  margin-bottom: 12px;
}
.course-hero .subtitle {
  font-size: 17px;
  color: var(--text-mid);
  margin-bottom: 28px;
}
.course-hero .price-tag {
  font-size: 28px;
  font-weight: 600;
  color: var(--sage-dark);
  margin-bottom: 24px;
}

.course-description {
  max-width: 750px;
  margin: 0 auto 40px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-mid);
}

/* ── Modules / Curriculum ── */

.curriculum { max-width: 750px; margin: 0 auto 40px; }
.curriculum h2 {
  font-family: var(--serif);
  font-size: 24px;
  margin-bottom: 20px;
  text-align: center;
}
.module-block {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.module-header {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 15px;
  background: var(--cream);
  border-bottom: 1px solid var(--card-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.module-header .arrow { transition: transform .2s; font-size: 12px; color: var(--text-mid); }
.module-header.open .arrow { transform: rotate(180deg); }
.module-lessons { display: none; }
.module-lessons.open { display: block; }
.lesson-row {
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--card-border);
  font-size: 14px;
  color: var(--text-mid);
  transition: background .15s;
}
.lesson-row:last-child { border-bottom: none; }
.lesson-row:hover { background: var(--cream); }
.lesson-row a { color: var(--text); flex: 1; }
.lesson-row .icon { font-size: 16px; width: 24px; text-align: center; }
.lesson-row .duration { font-size: 12px; color: var(--text-light); }
.lesson-row .free-badge {
  font-size: 11px;
  background: var(--success-light);
  color: var(--success);
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 500;
}
.lesson-row .check {
  color: var(--success);
  font-size: 18px;
}

/* ── Lesson viewer ── */

.learn-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  min-height: calc(100vh - 64px);
}
.learn-sidebar {
  background: var(--card-bg);
  border-right: 1px solid var(--card-border);
  overflow-y: auto;
  max-height: calc(100vh - 64px);
  position: sticky;
  top: 64px;
}
.learn-sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--card-border);
}
.learn-sidebar-header h3 {
  font-family: var(--serif);
  font-size: 16px;
  margin-bottom: 8px;
}
.learn-sidebar-header .progress-bar {
  height: 4px;
  background: var(--cream-dark);
  border-radius: 4px;
  overflow: hidden;
}
.learn-sidebar-header .progress-fill {
  height: 100%;
  background: var(--sage);
  border-radius: 4px;
  transition: width .3s;
}
.learn-sidebar-header .progress-text {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 6px;
}
.sidebar-module-title {
  padding: 14px 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  background: var(--cream);
}
.sidebar-lesson {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  font-size: 13px;
  color: var(--text-mid);
  border-bottom: 1px solid var(--card-border);
  transition: background .15s;
}
.sidebar-lesson:hover { background: var(--cream); color: var(--text); }
.sidebar-lesson.active { background: var(--cream); color: var(--sage-dark); font-weight: 600; }
.sidebar-lesson .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--text-light);
  flex-shrink: 0;
}
.sidebar-lesson.done .dot {
  background: var(--success);
  border-color: var(--success);
}

.learn-content {
  padding: 40px;
  max-width: 850px;
}
.learn-content h1 {
  font-family: var(--serif);
  font-size: 28px;
  margin-bottom: 24px;
}
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  margin-bottom: 32px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
}
.video-wrapper iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}
.lesson-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}
.lesson-text p { margin-bottom: 16px; }
.lesson-text h2, .lesson-text h3 { font-family: var(--serif); margin: 28px 0 12px; }
.lesson-text ul, .lesson-text ol { padding-left: 24px; margin-bottom: 16px; }
.lesson-text li { margin-bottom: 8px; }

.lesson-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--card-border);
}
.complete-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid var(--sage);
  background: transparent;
  color: var(--sage-dark);
  font-family: var(--sans);
  transition: all .2s;
}
.complete-btn:hover { background: var(--sage); color: #fff; }
.complete-btn.completed {
  background: var(--success-light);
  border-color: var(--success);
  color: var(--success);
  cursor: default;
}

/* ── Auth forms ── */

.auth-page {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}
.auth-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}
.auth-card h1 {
  font-family: var(--serif);
  font-size: 26px;
  text-align: center;
  margin-bottom: 8px;
}
.auth-card .auth-sub {
  text-align: center;
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 28px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-mid);
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  font-family: var(--sans);
  font-size: 14px;
  background: var(--cream);
  color: var(--text);
  outline: none;
  transition: border-color .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--sage);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select { cursor: pointer; }
.auth-footer {
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-mid);
}
.auth-footer a { color: var(--sage-dark); font-weight: 500; }

/* ── Flash messages ── */

.flash {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 20px;
}
.flash-success { background: var(--success-light); color: var(--success); }
.flash-error { background: var(--danger-light); color: var(--danger); }

/* ── Dashboard ── */

.dash-header {
  margin-bottom: 32px;
}
.dash-header h1 {
  font-family: var(--serif);
  font-size: 30px;
  margin-bottom: 4px;
}
.dash-header p {
  color: var(--text-mid);
  font-size: 15px;
}
.enrolled-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .2s;
  margin-bottom: 16px;
}
.enrolled-card:hover { transform: translateY(-2px); }
.enrolled-card-img {
  width: 200px;
  min-height: 140px;
  object-fit: cover;
  flex-shrink: 0;
}
.enrolled-card-img-placeholder {
  width: 200px;
  min-height: 140px;
  background: linear-gradient(135deg, var(--sage-light), var(--sage));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 36px;
  color: rgba(255,255,255,0.4);
  font-style: italic;
  flex-shrink: 0;
}
.enrolled-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.enrolled-card-body h3 {
  font-family: var(--serif);
  font-size: 18px;
  margin-bottom: 8px;
}
.enrolled-card-body .progress-info {
  font-size: 13px;
  color: var(--text-mid);
  margin-bottom: 10px;
}
.enrolled-card-body .progress-bar {
  height: 5px;
  background: var(--cream-dark);
  border-radius: 4px;
  overflow: hidden;
  max-width: 300px;
}
.enrolled-card-body .progress-fill {
  height: 100%;
  background: var(--sage);
  border-radius: 4px;
}

/* ── Admin ── */

.admin-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: calc(100vh - 64px);
}
.admin-sidebar {
  background: var(--card-bg);
  border-right: 1px solid var(--card-border);
  padding: 24px 0;
}
.admin-sidebar a {
  display: block;
  padding: 10px 24px;
  font-size: 14px;
  color: var(--text-mid);
  font-weight: 500;
  transition: all .15s;
}
.admin-sidebar a:hover { background: var(--cream); color: var(--text); }
.admin-sidebar a.active { background: var(--cream); color: var(--sage-dark); border-right: 3px solid var(--sage); }
.admin-content { padding: 32px; }
.admin-content h1 {
  font-family: var(--serif);
  font-size: 26px;
  margin-bottom: 24px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.admin-table th {
  text-align: left;
  padding: 14px 18px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  background: var(--cream);
  border-bottom: 1px solid var(--card-border);
}
.admin-table td {
  padding: 14px 18px;
  font-size: 14px;
  border-bottom: 1px solid var(--card-border);
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--cream); }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge-published { background: var(--success-light); color: var(--success); }
.badge-draft { background: var(--cream-dark); color: var(--text-light); }

/* ── Footer ── */

.footer {
  text-align: center;
  padding: 40px 24px;
  font-size: 13px;
  color: var(--text-light);
  border-top: 1px solid var(--card-border);
  margin-top: 60px;
}

/* ── Empty state ── */

.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-mid);
}
.empty-state .icon { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-family: var(--serif); font-size: 20px; margin-bottom: 8px; color: var(--text); }
.empty-state p { font-size: 14px; margin-bottom: 20px; }

/* ── Responsive ── */

@media (max-width: 768px) {
  .hero h1 { font-size: 30px; }
  .course-grid { grid-template-columns: 1fr; }
  .learn-layout { grid-template-columns: 1fr; }
  .learn-sidebar {
    position: fixed;
    left: -300px;
    top: 64px;
    width: 300px;
    height: calc(100vh - 64px);
    z-index: 90;
    transition: left .3s;
    box-shadow: var(--shadow-lg);
  }
  .learn-sidebar.open { left: 0; }
  .learn-content { padding: 24px 16px; }
  .sidebar-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    margin-bottom: 20px;
    font-family: var(--sans);
    color: var(--text-mid);
  }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar {
    display: flex;
    overflow-x: auto;
    padding: 0;
    border-right: none;
    border-bottom: 1px solid var(--card-border);
  }
  .admin-sidebar a { white-space: nowrap; padding: 12px 16px; border-right: none !important; }
  .enrolled-card { flex-direction: column; }
  .enrolled-card-img, .enrolled-card-img-placeholder { width: 100%; min-height: 160px; }
  .course-hero h1 { font-size: 28px; }
}

@media (min-width: 769px) {
  .sidebar-toggle { display: none; }
}