/* ============================================================
   UpSkill — styles.css
   Premium, light, indigo-accented LMS interface. Organised by
   section: reset/tokens, layout shell, primitives, views.
   ============================================================ */

/* ---------- Reset & box model ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, dl, dd, figure { margin: 0; }

/* ---------- Design tokens ---------- */
:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-alt: #f8f9fd;
  --border: #e2e6f0;
  --text: #161b2c;
  --text-muted: #5c6378;
  --accent: #4f46e5;
  --accent-dark: #4338ca;
  --accent-light: #eef0ff;
  --accent-contrast: #ffffff;
  --success: #15803d;
  --success-bg: #e7f7ee;
  --danger: #b91c1c;
  --danger-bg: #fdeaea;
  --warning: #b45309;
  --warning-bg: #fef2e0;
  --info: #1d4ed8;
  --info-bg: #e8f0fe;
  --muted: #475066;
  --muted-bg: #edeff5;
  --radius-lg: 16px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(22,27,44,.07);
  --shadow-md: 0 8px 24px rgba(22,27,44,.10);
  --shadow-lg: 0 16px 40px rgba(22,27,44,.16);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --sidebar-width: 264px;
  --topbar-height: 64px;
  --t: 160ms ease;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1220;
    --surface: #161c2d;
    --surface-alt: #1a2135;
    --border: #2b3348;
    --text: #e8eaf3;
    --text-muted: #9aa3bd;
    --accent: #8b93f8;
    --accent-dark: #a6adfa;
    --accent-light: #262e4c;
    --accent-contrast: #10142a;
    --success: #4ade80;
    --success-bg: #113322;
    --danger: #f87171;
    --danger-bg: #3a1616;
    --warning: #fbbf4a;
    --warning-bg: #3a2c10;
    --info: #7fb0ff;
    --info-bg: #142746;
    --muted: #b7bed2;
    --muted-bg: #222a3e;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
    --shadow-md: 0 8px 24px rgba(0,0,0,.45);
    --shadow-lg: 0 16px 40px rgba(0,0,0,.55);
  }
}
:root[data-theme="dark"] {
  --bg: #0e1220;
  --surface: #161c2d;
  --surface-alt: #1a2135;
  --border: #2b3348;
  --text: #e8eaf3;
  --text-muted: #9aa3bd;
  --accent: #8b93f8;
  --accent-dark: #a6adfa;
  --accent-light: #262e4c;
  --accent-contrast: #10142a;
  --success: #4ade80;
  --success-bg: #113322;
  --danger: #f87171;
  --danger-bg: #3a1616;
  --warning: #fbbf4a;
  --warning-bg: #3a2c10;
  --info: #7fb0ff;
  --info-bg: #142746;
  --muted: #b7bed2;
  --muted-bg: #222a3e;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 8px 24px rgba(0,0,0,.45);
  --shadow-lg: 0 16px 40px rgba(0,0,0,.55);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

/* ---------- Accessibility helpers ---------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; margin: -1px; padding: 0; border: 0;
}
.skip-link {
  position: absolute; left: 12px; top: -48px; background: var(--accent); color: #fff;
  padding: 10px 16px; border-radius: var(--radius-sm); z-index: 1000; transition: top var(--t);
}
.skip-link:focus { top: 12px; }

:focus-visible {
  outline: 2.5px solid var(--accent-dark);
  outline-offset: 2px;
  border-radius: 4px;
}
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }

/* ---------- Icons ---------- */
.icon { width: 1.1em; height: 1.1em; vertical-align: -0.18em; fill: currentColor; flex-shrink: 0; }
.star-icon { width: .9em; height: .9em; }

/* ============================================================
   Top bar + layout shell
   ============================================================ */
.topbar {
  position: sticky; top: 0; z-index: 40;
  height: var(--topbar-height);
  display: flex; align-items: center; gap: 12px;
  padding: 0 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.menu-toggle { display: none; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px; background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.topbar-spacer { flex: 1; }
.topbar-icon-link {
  position: relative; display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--radius-sm); color: var(--text-muted);
  transition: background var(--t), color var(--t);
}
.topbar-icon-link:hover { background: var(--muted-bg); color: var(--accent); }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 6px 10px; border-radius: var(--radius-sm); transition: background var(--t); }
.user-chip:hover { background: var(--muted-bg); }
.user-avatar { width: 34px; height: 34px; border-radius: 50%; }
.user-name { font-weight: 600; font-size: .92rem; display: none; }
@media (min-width: 640px) { .user-name { display: inline; } }

.nav-badge {
  position: absolute; top: 2px; right: 2px; min-width: 18px; height: 18px; padding: 0 4px;
  background: var(--danger); color: #fff; border-radius: 999px; font-size: .68rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

.app-shell { display: flex; min-height: calc(100vh - var(--topbar-height)); }

.sidebar {
  width: var(--sidebar-width); flex-shrink: 0; padding: 20px 14px;
  border-right: 1px solid var(--border); background: var(--surface);
  display: none;
}
@media (min-width: 960px) { .sidebar { display: block; } }

.nav-link {
  display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-radius: var(--radius-sm);
  color: var(--muted); font-weight: 600; font-size: .92rem; margin-bottom: 2px; position: relative;
  transition: background var(--t), color var(--t);
}
.nav-link:hover { background: var(--accent-light); color: var(--accent-dark); }
.nav-link.is-active { background: var(--accent); color: #fff; }
.nav-icon { display: flex; }
.nav-label { flex: 1; }
.nav-link .nav-badge { position: static; margin-left: auto; }

.view-root { flex: 1; min-width: 0; padding: 24px 20px 64px; max-width: 1280px; margin: 0 auto; width: 100%; }
@media (min-width: 640px) { .view-root { padding: 32px 32px 72px; } }

/* Drawer (mobile nav) */
.drawer-overlay {
  position: fixed; inset: 0; background: rgba(15,20,35,.5); z-index: 60;
}
.drawer {
  position: fixed; top: 0; left: 0; bottom: 0; width: min(300px, 86vw); background: var(--surface);
  z-index: 61; padding: 20px 14px; overflow-y: auto; box-shadow: var(--shadow-lg);
}
body.drawer-open { overflow: hidden; }

/* ============================================================
   Buttons, badges, forms, cards — primitives
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: var(--radius-sm); padding: 10px 18px;
  font-weight: 600; font-size: .92rem; cursor: pointer; white-space: nowrap;
  transition: background var(--t), color var(--t), border-color var(--t), transform var(--t);
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-dark); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { background: var(--muted-bg); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.08); }
.btn-sm { padding: 7px 12px; font-size: .84rem; }
.btn-lg { padding: 13px 22px; font-size: 1rem; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px;
  border-radius: 50%; border: none; background: transparent; color: var(--muted); cursor: pointer;
  transition: background var(--t), color var(--t);
}
.icon-btn:hover { background: var(--muted-bg); color: var(--accent); }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); padding: 20px;
}
.card-inset { background: var(--surface-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }

.badge {
  display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: 999px;
  font-size: .75rem; font-weight: 700; white-space: nowrap;
}
.badge .icon { width: .95em; height: .95em; }
.badge-default { background: var(--muted-bg); color: var(--muted); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-muted { background: var(--muted-bg); color: var(--muted); }

.progress-bar { height: 8px; border-radius: 999px; background: var(--muted-bg); overflow: hidden; }
.progress-bar-fill { height: 100%; background: var(--accent); border-radius: 999px; transition: width 300ms ease; }

.form-field { margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; }
.form-field label, .filter-field, .discount-form label { font-weight: 600; font-size: .88rem; }
input[type="text"], input[type="email"], input[type="search"], input[type="file"], select, textarea {
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; background: var(--surface);
  color: var(--text); font-size: .92rem; width: 100%;
}
textarea { resize: vertical; font-family: var(--font); }
.checkbox-field { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; }
.checkbox-field input { margin-top: 3px; width: 18px; height: 18px; }
.field-error { color: var(--danger); font-size: .82rem; font-weight: 600; }
.field-success { color: var(--success); font-size: .82rem; font-weight: 600; }
.field-hint { color: var(--text-muted); font-size: .82rem; }

.section-title { font-size: 1.1rem; font-weight: 700; margin: 0 0 14px; display: flex; align-items: center; gap: 8px; }

.rating { display: inline-flex; align-items: center; gap: 6px; }
.stars { display: inline-flex; color: #f59e0b; }
.rating-text { font-size: .82rem; color: var(--text-muted); font-weight: 600; }

.format-chips { display: inline-flex; gap: 6px; }
.format-chip { display: inline-flex; color: var(--muted); }

.check-list li { display: flex; align-items: flex-start; gap: 10px; padding: 6px 0; }
.check-list .icon { color: var(--success); margin-top: 3px; }

/* ============================================================
   View header, grids, empty states
   ============================================================ */
.view-header { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 22px; }
.view-header h1 { font-size: 1.6rem; font-weight: 800; }
.view-subtitle { color: var(--text-muted); margin-top: 4px; }
.view-header-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.empty-state { text-align: center; padding: 48px 24px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.empty-state-sm { padding: 24px; }
.empty-state-title { font-weight: 700; font-size: 1.05rem; }
.empty-state-text { color: var(--text-muted); max-width: 440px; }

.tabs { display: flex; gap: 6px; margin-bottom: 18px; overflow-x: auto; border-bottom: 1px solid var(--border); }
.tab {
  background: transparent; border: none; padding: 10px 16px; font-weight: 600; color: var(--text-muted);
  border-bottom: 2px solid transparent; cursor: pointer; white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab-active { color: var(--accent-dark); border-bottom-color: var(--accent); }

/* ============================================================
   Dashboard
   ============================================================ */
.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; margin-bottom: 26px; }
.summary-card { display: flex; align-items: center; gap: 14px; }
.summary-icon { width: 44px; height: 44px; border-radius: var(--radius-sm); background: var(--accent-light); color: var(--accent-dark); display: flex; align-items: center; justify-content: center; }
.summary-value { font-size: 1.4rem; font-weight: 800; }
.summary-label { color: var(--text-muted); font-size: .84rem; }

.dashboard-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 1024px) { .dashboard-grid { grid-template-columns: 2fr 1fr; } }

.continue-learning-card { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 26px; }
.continue-thumb { width: 180px; height: 120px; object-fit: cover; border-radius: var(--radius); flex-shrink: 0; }
.continue-body { flex: 1; min-width: 200px; }
.eyebrow { text-transform: uppercase; letter-spacing: .05em; font-size: .72rem; font-weight: 700; color: var(--accent); margin-bottom: 4px; }
.continue-title a:hover { color: var(--accent-dark); }
.continue-next { color: var(--text-muted); margin: 6px 0 10px; }
.continue-percent { color: var(--text-muted); font-size: .84rem; margin: 8px 0 14px; }

.deadline-list li.deadline-item, .deadline-item { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.deadline-list li:last-child { border-bottom: none; }
.deadline-title { font-weight: 700; }
.deadline-course { color: var(--text-muted); font-size: .84rem; }
.deadline-meta { text-align: right; }
.deadline-date { font-size: .78rem; color: var(--text-muted); margin-top: 4px; }

.activity-list li { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.activity-list li:last-child { border-bottom: none; }
.activity-icon { width: 34px; height: 34px; border-radius: 50%; background: var(--accent-light); color: var(--accent-dark); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.activity-title { font-weight: 600; font-size: .92rem; }
.activity-time { color: var(--text-muted); font-size: .78rem; margin-top: 2px; }

.dashboard-col-side > .section-title:not(:first-child) { margin-top: 22px; }
.dashboard-col-main > .section-title:not(:first-child) { margin-top: 26px; }

/* ============================================================
   Catalogue
   ============================================================ */
.catalogue-toolbar { margin-bottom: 20px; }
.search-field { position: relative; margin-bottom: 14px; }
.search-field-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted); }
.search-field input { padding-left: 38px; }
.filter-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.filter-field { display: flex; flex-direction: column; gap: 5px; font-size: .82rem; color: var(--text-muted); min-width: 150px; flex: 1; }
.filter-field select { width: 100%; }
.results-count { color: var(--text-muted); margin: 0 0 12px; font-size: .88rem; }

.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 18px; }
.course-grid-compact { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

.course-card { padding: 0; display: flex; flex-direction: column; position: relative; overflow: hidden; }
.course-card-thumb-link { display: block; }
.course-card-thumb { width: 100%; height: 150px; object-fit: cover; }
.course-card .bookmark-btn { position: absolute; top: 10px; right: 10px; background: rgba(255,255,255,.92); color: var(--muted); }
.course-card-body { padding: 16px 16px 8px; flex: 1; }
.course-card-tags { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.course-card-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; line-height: 1.3; }
.course-card-title a:hover { color: var(--accent-dark); }
.course-card-desc { color: var(--text-muted); font-size: .88rem; margin-bottom: 8px; }
.course-card-instructor { font-size: .82rem; color: var(--text-muted); margin-bottom: 10px; }
.course-card-meta { display: flex; align-items: center; gap: 12px; font-size: .78rem; color: var(--text-muted); margin-bottom: 10px; flex-wrap: wrap; }
.meta-item { display: inline-flex; align-items: center; gap: 4px; }
.course-card-rating { margin-bottom: 4px; }
.course-card-footer { padding: 14px 16px 16px; border-top: 1px solid var(--border); margin-top: auto; }
.course-card-footer-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; gap: 8px; flex-wrap: wrap; }
.price-original { text-decoration: line-through; color: var(--text-muted); font-size: .85rem; margin-right: 4px; }
.price-current { font-weight: 800; font-size: 1.05rem; }
.course-card-actions { display: flex; justify-content: space-between; gap: 8px; margin-top: 10px; flex-wrap: wrap; }

/* ============================================================
   Course detail
   ============================================================ */
.course-detail-hero { display: flex; flex-direction: column; gap: 18px; margin-bottom: 20px; padding: 0; overflow: hidden; }
@media (min-width: 768px) { .course-detail-hero { flex-direction: row; } }
.course-detail-cover { width: 100%; height: 220px; object-fit: cover; }
@media (min-width: 768px) { .course-detail-cover { width: 320px; height: auto; } }
.course-detail-hero-body { padding: 20px; flex: 1; }
.course-detail-tags { display: flex; gap: 6px; margin-bottom: 10px; }
.course-detail-title-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.course-detail-title-row h1 { font-size: 1.7rem; font-weight: 800; }
.course-detail-desc { color: var(--text-muted); margin: 10px 0; }
.course-detail-meta { display: flex; gap: 16px; font-size: .86rem; color: var(--text-muted); margin: 12px 0; flex-wrap: wrap; }
.course-detail-hero-body .btn-secondary { margin-top: 8px; }

.course-detail-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 1024px) { .course-detail-grid { grid-template-columns: 2fr 1fr; } }
.course-detail-main > .card { margin-bottom: 18px; }
.course-detail-side { position: relative; }
.purchase-card { position: sticky; top: calc(var(--topbar-height) + 16px); }
.purchase-price { font-size: 1.4rem; margin-bottom: 14px; }
.cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.cta-progress-label { color: var(--text-muted); font-size: .84rem; margin-top: 6px; }

.instructor-row { display: flex; gap: 14px; align-items: flex-start; }
.instructor-photo { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; }
.instructor-name { font-weight: 700; }
.instructor-bio { color: var(--text-muted); font-size: .88rem; margin-top: 4px; }

.curriculum-module { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 10px; overflow: hidden; }
.curriculum-module summary {
  cursor: pointer; padding: 14px 16px; display: flex; align-items: center; gap: 10px; font-weight: 700;
  list-style: none; background: var(--surface-alt);
}
.curriculum-module summary::-webkit-details-marker { display: none; }
.curriculum-module .chevron-icon { transition: transform var(--t); }
.curriculum-module[open] summary .chevron-icon { transform: rotate(180deg); }
.module-lesson-count { margin-left: auto; font-size: .78rem; color: var(--text-muted); font-weight: 500; }
.lesson-list { padding: 4px 0; }
.lesson-row {
  display: flex; align-items: center; gap: 10px; padding: 12px 16px; width: 100%; background: transparent;
  border: none; text-align: left; cursor: pointer; font-size: .9rem; border-top: 1px solid var(--border);
}
.lesson-row:hover { background: var(--accent-light); }
.lesson-row-title { flex: 1; }
.lesson-row-meta { display: flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: .8rem; }
.lesson-row-tags { display: flex; gap: 4px; }
.lesson-row-locked { color: var(--text-muted); cursor: pointer; }
.lock-affordance { margin-left: 4px; }

/* ============================================================
   Checkout
   ============================================================ */
.checkout-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 900px) { .checkout-grid { grid-template-columns: 1fr 1.3fr; } }
.order-course { display: flex; gap: 14px; align-self: start; }
.order-course-thumb { width: 110px; height: 80px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
.order-course-instructor { color: var(--text-muted); font-size: .84rem; margin-top: 6px; }
.order-lines { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.order-line { display: flex; justify-content: space-between; gap: 12px; font-size: .92rem; }
.order-line dt { color: var(--text-muted); }
.order-line dd { font-weight: 600; }
.order-line-discount dd { color: var(--success); }
.order-line-total { border-top: 1px solid var(--border); padding-top: 10px; font-size: 1.1rem; }
.order-line-total dd { font-weight: 800; }
.discount-form { margin-bottom: 20px; }
.discount-input-row { display: flex; gap: 8px; margin: 6px 0; }
.discount-input-row input { flex: 1; }
.order-learner { margin-bottom: 20px; padding: 14px; background: var(--surface-alt); border-radius: var(--radius-sm); }
.order-learner h3 { font-size: .9rem; font-weight: 700; margin-bottom: 6px; }

.payment-card { max-width: 560px; }
.payment-banner { display: flex; align-items: center; gap: 8px; background: var(--warning-bg); color: var(--warning); padding: 10px 14px; border-radius: var(--radius-sm); font-weight: 700; margin-bottom: 18px; font-size: .86rem; }
.payment-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.payment-outcome { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; padding: 16px; border-radius: var(--radius); margin: 14px 0; }
.payment-outcome-failed { background: var(--danger-bg); color: var(--danger); }
.payment-outcome-cancelled { background: var(--muted-bg); color: var(--muted); }
.back-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; color: var(--text-muted); font-weight: 600; }
.back-link:hover { color: var(--accent-dark); }

.confirmation-card { max-width: 560px; margin: 0 auto; text-align: center; padding: 36px 28px; }
.confirmation-icon { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; }
.confirmation-success { background: var(--success-bg); color: var(--success); }
.confirmation-icon .icon { width: 32px; height: 32px; }
.confirmation-sub { color: var(--text-muted); margin: 8px 0 20px; }
.confirmation-lines { text-align: left; background: var(--surface-alt); padding: 16px; border-radius: var(--radius); margin-bottom: 20px; }
.confirmation-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   My Learning
   ============================================================ */
.my-learning-list { display: flex; flex-direction: column; gap: 14px; }
.my-learning-card { display: flex; gap: 16px; flex-wrap: wrap; }
.my-learning-thumb { width: 160px; height: 110px; object-fit: cover; border-radius: var(--radius); flex-shrink: 0; }
.my-learning-body { flex: 1; min-width: 200px; }
.my-learning-top { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.my-learning-status { margin: 6px 0; }
.my-learning-meta { color: var(--text-muted); font-size: .84rem; margin: 8px 0 4px; }
.my-learning-last { color: var(--text-muted); font-size: .84rem; margin-bottom: 10px; }

/* ============================================================
   Lesson player
   ============================================================ */
.lesson-player-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 10px; }
.curriculum-toggle { display: inline-flex; }
@media (min-width: 960px) { .curriculum-toggle { display: none; } }

.lesson-player-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 960px) { .lesson-player-grid { grid-template-columns: 300px 1fr; } }

.lesson-curriculum {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 16px; display: none; max-height: 70vh; overflow-y: auto;
}
.lesson-curriculum.is-open { display: block; position: fixed; top: 76px; left: 12px; right: 12px; z-index: 55; box-shadow: var(--shadow-lg); max-height: 76vh; }
@media (min-width: 960px) { .lesson-curriculum { display: block; position: static; max-height: calc(100vh - var(--topbar-height) - 40px); } }
.lesson-curriculum-course { font-weight: 700; margin-bottom: 8px; }
.lesson-curriculum-percent { color: var(--text-muted); font-size: .8rem; margin: 6px 0 14px; }
.curriculum-module-title { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); font-weight: 700; margin: 14px 0 6px; }
.curriculum-row-list { display: flex; flex-direction: column; gap: 2px; }
.curriculum-row {
  display: flex; align-items: center; gap: 8px; padding: 8px; border-radius: var(--radius-sm); font-size: .84rem;
  width: 100%; background: transparent; border: none; text-align: left; cursor: pointer;
}
.curriculum-row:hover { background: var(--accent-light); }
.curriculum-row.is-current { background: var(--accent-light); font-weight: 700; color: var(--accent-dark); }
.curriculum-row-icon { display: flex; color: var(--text-muted); }
.curriculum-row-title { flex: 1; }
.curriculum-row-duration { font-size: .72rem; color: var(--text-muted); }
.curriculum-row-locked { color: var(--text-muted); cursor: pointer; }

.locked-lesson-panel { text-align: center; padding: 40px 20px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.locked-lesson-panel .icon { width: 36px; height: 36px; color: var(--warning); }
.locked-lesson-panel h2 { font-size: 1.2rem; }
.locked-lesson-panel p { color: var(--text-muted); max-width: 46ch; }

.lesson-main { min-width: 0; }
.lesson-title { font-size: 1.4rem; font-weight: 800; margin-bottom: 14px; }
.lesson-content { margin-bottom: 18px; }

.lesson-media-wrap video, .audio-lesson-card audio { width: 100%; border-radius: var(--radius); background: #000; }
.audio-lesson-card audio { background: var(--surface-alt); }
.media-controls-row { display: flex; justify-content: flex-end; margin-top: 10px; }
.speed-selector { display: flex; align-items: center; gap: 8px; font-size: .82rem; color: var(--text-muted); }
.speed-selector select { width: auto; padding: 6px 8px; }
.media-fallback { display: flex; align-items: center; gap: 8px; background: var(--warning-bg); color: var(--warning); padding: 10px 14px; border-radius: var(--radius-sm); margin-top: 10px; }
.transcript-block { margin-top: 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px 14px; }
.transcript-block summary { cursor: pointer; padding: 10px 0; font-weight: 600; }
.transcript-block p { padding-bottom: 12px; color: var(--text-muted); }

.audio-lesson-card { display: flex; gap: 18px; flex-wrap: wrap; }
.audio-cover { width: 120px; height: 120px; object-fit: cover; border-radius: var(--radius); flex-shrink: 0; }
.audio-lesson-main { flex: 1; min-width: 220px; }
.audio-lesson-duration { color: var(--text-muted); font-size: .84rem; display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }

.reading-time { color: var(--text-muted); font-size: .84rem; display: flex; align-items: center; gap: 6px; margin-bottom: 16px; }
.text-lesson-body { max-width: 68ch; font-size: 1rem; line-height: 1.7; }
.text-lesson-body h2 { font-size: 1.2rem; margin: 18px 0 8px; }
.text-lesson-body h3 { font-size: 1.05rem; margin: 14px 0 6px; }
.text-lesson-body p { margin: 0 0 12px; }
.text-lesson-body ul, .text-lesson-body ol { margin: 0 0 12px; padding-left: 22px; list-style: revert; }
.text-lesson-body li { margin-bottom: 4px; }

.resources-block { margin-top: 18px; }
.resources-title { font-size: .88rem; font-weight: 700; margin-bottom: 8px; }
.resources-list { display: flex; flex-direction: column; gap: 6px; }
.resource-link { display: inline-flex; align-items: center; gap: 8px; background: none; border: none; color: var(--accent-dark); font-weight: 600; cursor: pointer; padding: 4px 0; }
.resource-link:hover { text-decoration: underline; }

.mark-complete-row { display: flex; align-items: center; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.mark-complete-note { color: var(--text-muted); font-size: .82rem; }
.enrol-to-track { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }

.quiz-intro { text-align: center; padding: 28px 20px; }
.quiz-best-score { margin: 10px 0 16px; }
.quiz-question { border: none; margin-bottom: 20px; padding: 0; }
.quiz-question legend { font-weight: 700; margin-bottom: 10px; padding: 0; white-space: normal; }
.quiz-options { display: flex; flex-direction: column; gap: 8px; }
.quiz-option { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; }
.quiz-option:hover { border-color: var(--accent); }
.quiz-option input { width: 16px; height: 16px; }
.quiz-result-banner { display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: var(--radius); margin-bottom: 20px; }
.quiz-result-pass { background: var(--success-bg); color: var(--success); }
.quiz-result-fail { background: var(--danger-bg); color: var(--danger); }
.quiz-score { font-size: 1.2rem; font-weight: 800; }
.quiz-review-item { padding: 14px 0; border-top: 1px solid var(--border); }
.quiz-review-q { display: flex; align-items: flex-start; gap: 8px; font-weight: 700; margin-bottom: 6px; }
.quiz-review-answer { color: var(--text-muted); font-size: .88rem; margin-bottom: 4px; }
.quiz-review-explanation { font-size: .88rem; margin-top: 6px; background: var(--surface-alt); padding: 10px; border-radius: var(--radius-sm); }
.is-incorrect .quiz-review-q { color: var(--danger); }
.is-correct .quiz-review-q { color: var(--success); }

.notes-panel textarea { min-height: 100px; }
.note-saved { color: var(--success); font-size: .8rem; font-weight: 600; margin-left: 8px; }

.lesson-nav-row { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; gap: 10px; flex-wrap: wrap; }
.lesson-nav-position { color: var(--text-muted); font-size: .84rem; }

/* ============================================================
   Assignments
   ============================================================ */
.assignment-list { display: flex; flex-direction: column; gap: 16px; }
.assignment-card-top { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; margin-bottom: 10px; }
.assignment-course { color: var(--text-muted); font-size: .86rem; }
.assignment-course a:hover { color: var(--accent-dark); }
.assignment-instructions { margin-bottom: 10px; color: var(--text); }
.assignment-deadline { display: flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: .86rem; margin-bottom: 14px; }
.assignment-form { border-top: 1px solid var(--border); padding-top: 16px; display: flex; flex-direction: column; gap: 10px; }
.demo-flag { display: flex; align-items: center; gap: 6px; color: var(--warning); font-size: .82rem; font-weight: 600; }
.submission-summary { border-top: 1px solid var(--border); padding-top: 16px; }
.submission-summary p { margin-bottom: 6px; font-size: .9rem; }
.grade-block { margin-top: 10px; background: var(--success-bg); padding: 14px; border-radius: var(--radius-sm); }
.grade-score { font-weight: 800; color: var(--success); font-size: 1.1rem; }
.grade-feedback { margin: 6px 0; font-size: .88rem; }
.grade-date { font-size: .76rem; color: var(--text-muted); }
.awaiting-grade { display: flex; align-items: center; gap: 6px; color: var(--warning); font-weight: 600; font-size: .88rem; }

/* ============================================================
   Certificates
   ============================================================ */
.certificate-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .certificate-grid { grid-template-columns: repeat(2, 1fr); } }
.certificate-card { padding: 16px; }
.certificate-preview { border: 2px solid var(--accent-light); border-radius: var(--radius); padding: 24px 18px; text-align: center; background: linear-gradient(180deg, var(--surface-alt), var(--surface)); }
.certificate-sample-flag { font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; color: var(--warning); font-weight: 800; margin-bottom: 14px; }
.certificate-eyebrow { font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
.certificate-heading { font-size: 1.3rem; font-weight: 800; margin: 8px 0 14px; }
.certificate-presented { color: var(--text-muted); font-size: .86rem; }
.certificate-name { font-size: 1.4rem; font-weight: 800; color: var(--accent-dark); margin: 6px 0; font-family: Georgia, serif; }
.certificate-course { font-weight: 700; font-size: 1.05rem; margin: 6px 0 14px; }
.certificate-meta-row { display: flex; justify-content: space-between; font-size: .76rem; color: var(--text-muted); border-top: 1px solid var(--border); padding-top: 10px; flex-wrap: wrap; gap: 6px; }
.certificate-card-actions { display: flex; justify-content: space-between; margin-top: 14px; gap: 10px; flex-wrap: wrap; }

.certificate-face, .receipt-face { text-align: center; }
.receipt-flag { font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; color: var(--warning); font-weight: 800; margin-bottom: 14px; }
.receipt-order-ref { color: var(--text-muted); margin-bottom: 14px; }
.receipt-face h2 { font-weight: 800; margin-bottom: 4px; }

/* ============================================================
   Purchases
   ============================================================ */
.purchase-list { display: flex; flex-direction: column; gap: 14px; }
.purchase-card-row { display: flex; gap: 16px; flex-wrap: wrap; }
.purchase-thumb { width: 120px; height: 86px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
.purchase-body { flex: 1; min-width: 220px; }
.purchase-top { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; margin-bottom: 8px; }
.purchase-meta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 8px; margin-bottom: 10px; }
.purchase-meta-grid dt { font-size: .72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .03em; }
.purchase-meta-grid dd { font-weight: 700; font-size: .88rem; }
.purchase-owned-note { color: var(--text-muted); font-size: .84rem; font-style: italic; }
.purchase-actions { margin-top: 4px; }

/* ============================================================
   Notifications
   ============================================================ */
.notification-list { padding: 0; }
.notification-item { display: flex; gap: 14px; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.notification-item:last-child { border-bottom: none; }
.notification-item.is-unread { background: var(--accent-light); }
.notification-icon { width: 38px; height: 38px; border-radius: 50%; background: var(--surface-alt); color: var(--accent-dark); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.notification-body { flex: 1; min-width: 0; }
.notification-title { font-weight: 700; }
.notification-message { color: var(--text-muted); font-size: .9rem; margin: 2px 0 4px; }
.notification-time { color: var(--text-muted); font-size: .76rem; }
.notification-actions { display: flex; gap: 10px; margin-top: 8px; }

/* ============================================================
   Profile
   ============================================================ */
.profile-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 900px) { .profile-grid { grid-template-columns: 1.4fr 1fr; } }
.profile-side { display: flex; flex-direction: column; gap: 20px; }
.appearance-options { display: flex; gap: 12px; }
.appearance-option { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; flex: 1; justify-content: center; font-weight: 600; }
.appearance-option:has(input:checked) { border-color: var(--accent); background: var(--accent-light); color: var(--accent-dark); }
.danger-zone { border-color: var(--danger-bg); }
.danger-zone p { color: var(--text-muted); font-size: .88rem; margin: 8px 0 14px; }
.save-feedback { color: var(--success); font-weight: 600; font-size: .86rem; min-height: 1.2em; margin-bottom: 4px; }

/* ============================================================
   Toast & Dialog
   ============================================================ */
.toast-region { position: fixed; bottom: 20px; right: 20px; z-index: 200; display: flex; flex-direction: column; gap: 10px; max-width: min(360px, 90vw); }
.toast {
  display: flex; align-items: flex-start; gap: 10px; background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow-md);
  animation: toast-in 180ms ease;
}
.toast-leaving { opacity: 0; transition: opacity 250ms ease; }
.toast-icon { flex-shrink: 0; display: flex; }
.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-info { border-left: 4px solid var(--info); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.dialog-overlay { position: fixed; inset: 0; background: rgba(15,20,35,.55); z-index: 300; display: flex; align-items: center; justify-content: center; padding: 20px; }
.dialog { background: var(--surface); border-radius: var(--radius-lg); max-width: 460px; width: 100%; box-shadow: var(--shadow-lg); padding: 22px; }
.dialog-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; gap: 10px; }
.dialog-title { font-size: 1.15rem; font-weight: 800; }
.dialog-body { color: var(--text-muted); margin-bottom: 20px; }
.dialog-body p { margin-bottom: 8px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; flex-wrap: wrap; }

/* ============================================================
   Print styles — certificates & receipts
   ============================================================ */
.print-only { display: none; }
@media print {
  body > *:not(#print-certificate-root) { display: none !important; }
  #print-certificate-root { display: block !important; padding: 40px; }
  .certificate-face, .receipt-face { border: 3px solid #4f46e5; border-radius: 16px; padding: 48px; text-align: center; }
  .certificate-sample-flag, .receipt-flag { color: #b45309; font-weight: 800; margin-bottom: 20px; text-transform: uppercase; font-size: .75rem; }
  .certificate-name { font-size: 2rem; font-family: Georgia, serif; color: #4338ca; margin: 10px 0; }
  .certificate-course { font-size: 1.3rem; font-weight: 800; margin: 10px 0 20px; }
  .certificate-meta-row, .order-lines { margin-top: 20px; }
  .order-line { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid #ddd; }
}