:root {
  --bg: #f5f8ff;
  --panel: #fff;
  --text: #10215b;
  --muted: #66749b;
  --line: #e2e9f5;
  --primary: #1464f6;
  --primary-dark: #0d4fd1;
  --soft: #edf5ff;
  --success: #07865d;
  --success-soft: #eaf9f2;
  --warning: #b86700;
  --warning-soft: #fff6df;
  --danger: #e23b45;
  --danger-soft: #fff0f1;
  --shadow: 0 18px 45px rgba(54, 92, 154, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}
button, input { font: inherit; }
a { color: var(--primary); }
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.lucide-icon {
  display: block;
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid rgba(226, 232, 240, .92);
  backdrop-filter: blur(18px);
}
.site-nav-inner {
  width: min(1180px, calc(100% - 36px));
  min-height: 68px;
  margin: auto;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  color: var(--text);
  text-decoration: none;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.04em;
  white-space: nowrap;
}
.brand-mark { margin-right: 8px; }
.brand > span:last-child { color: var(--primary); }
.brand-mark { display: flex; align-items: center; gap: 2px; height: 22px; }
.brand-mark i { display: block; width: 3px; border-radius: 9px; background: var(--primary); }
.brand-mark i:nth-child(1), .brand-mark i:nth-child(5) { height: 9px; }
.brand-mark i:nth-child(2), .brand-mark i:nth-child(4) { height: 16px; }
.brand-mark i:nth-child(3) { height: 22px; }
.nav-links { display: flex; align-items: center; gap: 3px; }
.nav-links > a {
  padding: 9px 8px;
  border-radius: 9px;
  color: #475569;
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
}
.nav-links > a:hover, .nav-links > a.active { color: var(--primary); background: var(--soft); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; font-size: 13px; font-weight: 750; }
.nav-actions a { text-decoration: none; }
.nav-cta {
  padding: 10px 17px;
  border-radius: 11px;
  color: #fff !important;
  background: var(--primary);
  box-shadow: 0 8px 20px rgba(37, 99, 235, .2);
}
.nav-cta:hover { background: var(--primary-dark); }
.menu-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  padding: 9px 12px;
  color: var(--text);
  font-weight: 800;
  cursor: pointer;
}

/* Hero */
.library-page { padding-bottom: 52px; }
.library-hero {
  position: relative;
  width: min(1180px, calc(100% - 36px));
  min-height: 250px;
  margin: 22px auto 18px;
  display: flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid #dce9fb;
  border-radius: 24px;
  background: #eaf5ff url('../images/home/daily-listening-cta.webp') 63% center / cover no-repeat;
  box-shadow: var(--shadow);
}
.library-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(240, 248, 255, .98) 0%, rgba(240, 248, 255, .92) 37%, rgba(240, 248, 255, .15) 69%);
}
.hero-copy { position: relative; z-index: 1; width: 53%; padding: 34px 38px; }
.eyebrow {
  color: #5577bd;
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: .12em;
}
.hero-copy h1 {
  max-width: 590px;
  margin: 7px 0 12px;
  color: #0c1b55;
  font-size: clamp(38px, 5vw, 58px);
  line-height: .98;
  letter-spacing: -.055em;
}
.hero-copy p { max-width: 540px; margin: 0; color: #53668d; font-size: 16px; }

/* Library layout and sidebar */
.dashboard-shell {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  display: block;
}
.library-sidebar {
  display: block;
  margin-bottom: 14px;
}
.side-card, .library-content {
  background: rgba(255, 255, 255, .96);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 12px 34px rgba(54, 92, 154, .055);
}
.side-card { padding: 16px; }
.side-heading { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.side-heading-icon, .side-callout-icon, .feature-icon {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  color: var(--primary);
  background: #e8f2ff;
}
.side-heading-icon .lucide-icon, .side-callout-icon .lucide-icon, .feature-icon .lucide-icon { width: 20px; height: 20px; }
.side-heading h2 { margin: 0; font-size: 16px; letter-spacing: -.02em; }
.overview-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.overview-stat { min-height: 72px; padding: 10px; border: 1px solid var(--line); border-radius: 12px; background: #fbfdff; }
.overview-stat b { display: block; font-size: 19px; line-height: 1.1; }
.overview-stat span { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; }
/* Main library panel */
.library-content { min-width: 0; padding: 16px; }
.library-toolbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; padding: 2px 2px 14px; }
.library-toolbar h2 { margin: 0; font-size: 28px; line-height: 1.15; letter-spacing: -.035em; }
.library-toolbar p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 38px;
  border: 0;
  border-radius: 10px;
  padding: 9px 12px;
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.btn .lucide-icon { width: 15px; height: 15px; }
.btn.primary { color: #fff; background: var(--primary); box-shadow: 0 7px 16px rgba(20, 100, 246, .18); }
.btn.primary:hover { background: var(--primary-dark); }
.btn.secondary { color: #25417a; background: #fff; border: 1px solid var(--line); }
.btn.secondary:hover { color: var(--primary); border-color: #b8cff4; background: #fafdff; }
.btn.ghost { color: #344054; background: #eef2f7; }
.btn.danger { color: var(--danger); background: var(--danger-soft); border: 1px solid #ffd7da; }
.btn:focus-visible, .folder-row:focus-visible { outline: 3px solid rgba(20, 100, 246, .28); outline-offset: 2px; }
.btn:disabled { opacity: .48; cursor: not-allowed; box-shadow: none; }
.notice { margin-bottom: 12px; border: 1px solid #bdd8ff; border-radius: 12px; padding: 12px 14px; color: #235296; background: #f0f7ff; font-size: 12px; }
.notice.warning { color: #8a4d00; border-color: #ffe098; background: var(--warning-soft); }
.notice.error { color: #a11f2b; border-color: #ffc7cc; background: var(--danger-soft); }
.panel { min-width: 0; }
.empty { padding: 52px 20px; text-align: center; color: var(--muted); }
.empty strong { display: block; margin-bottom: 7px; color: var(--text); font-size: 18px; }
.resource-list { display: grid; gap: 14px; }
.resource-card { overflow: hidden; border: 1px solid var(--line); border-radius: 15px; background: #fff; }
.resource-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 15px 16px 13px; }
.resource-heading { display: flex; align-items: flex-start; gap: 11px; min-width: 0; }
.root-folder-icon { display: grid; place-items: center; flex: 0 0 auto; width: 42px; height: 42px; border-radius: 13px; color: #f2a900; background: #fff6dc; }
.root-folder-icon .lucide-icon { width: 22px; height: 22px; }
.resource-title { margin: 1px 0 3px; font-size: 21px; line-height: 1.25; letter-spacing: -.02em; }
.resource-path { overflow-wrap: anywhere; color: var(--muted); font-size: 13px; }
.resource-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.resource-actions .btn { min-height: 36px; padding: 7px 9px; font-size: 13px; }
.summary-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.pill { display: inline-flex; align-items: center; gap: 5px; border-radius: 999px; padding: 5px 9px; color: #52627f; background: #f2f5f9; font-size: 12px; font-weight: 800; }
.pill.done { color: var(--success); background: var(--success-soft); }
.pill.progress { color: #075fd0; background: #eaf4ff; }
.pill.unlinked { color: var(--danger); background: var(--danger-soft); }
.pill-action { border: 0; cursor: pointer; font: inherit; }
.pill-action:hover { filter: brightness(.97); text-decoration: underline; }
.pill-action:focus-visible { outline: 2px solid var(--danger); outline-offset: 2px; }
.course-progress { height: 4px; overflow: hidden; background: #eef2f7; }
.course-progress > span { display: block; height: 100%; background: linear-gradient(90deg, #1f75ff, #6058f5); }
.folder-tree { border-top: 1px solid var(--line); background: #fbfdff; }
.tree-node { border-bottom: 1px solid #edf1f7; }
.tree-node:last-child { border-bottom: 0; }
.folder-row {
  width: 100%;
  display: grid;
  grid-template-columns: 16px 22px minmax(0, 1fr) auto auto;
  gap: 8px;
  align-items: center;
  border: 0;
  padding: 10px 14px 10px calc(14px + var(--depth, 0) * 20px);
  color: var(--text);
  background: #f8fbff;
  text-align: left;
  cursor: pointer;
}
.folder-row:hover { background: #eef6ff; }
.tree-caret { display: inline-block; color: #55719f; font-size: 9px; transition: transform .15s ease; }
.tree-caret.open { transform: rotate(90deg); }
.folder-icon { display: grid; place-items: center; color: var(--primary); }
.folder-icon .lucide-icon { width: 17px; height: 17px; }
.folder-name { min-width: 0; overflow: hidden; color: #162b64; font-size: 14px; font-weight: 850; text-overflow: ellipsis; white-space: nowrap; }
.folder-meta, .folder-progress-mini { color: var(--muted); font-size: 12px; white-space: nowrap; }
.tree-children { border-top: 1px solid #edf1f7; }
.tree-lesson-wrap { padding-left: calc(var(--depth, 0) * 20px); background: #fff; }
.lesson-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px 86px;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  margin: 0 8px;
  padding: 8px 8px;
  border-bottom: 1px solid #eff2f7;
  border-radius: 9px;
}
.lesson-row:hover { background: #eef6ff; }
.tree-lesson-wrap:last-child .lesson-row { border-bottom-color: transparent; }
.lesson-row.missing { background: linear-gradient(90deg, #fff4f4, #fffafa); }
.lesson-main { display: flex; align-items: flex-start; gap: 9px; min-width: 0; }
.lesson-icon { display: grid; place-items: center; flex: 0 0 auto; width: 28px; height: 28px; margin-top: 1px; border: 1px solid #d9e6f8; border-radius: 8px; color: var(--primary); background: #fff; }
.lesson-icon .lucide-icon { width: 14px; height: 14px; }
.lesson-title { overflow: hidden; color: #1c336b; font-size: 14px; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
.lesson-files { overflow: hidden; margin-top: 2px; color: #7a87a6; font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.lesson-mode-progress { margin-top: 3px; color: #73809b; font-size: 11px; }
.lesson-mode-progress strong { color: #4d5d7d; }
.status { width: max-content; max-width: 112px; justify-self: start; border-radius: 999px; padding: 5px 8px; color: #65738f; background: #f1f4f8; font-size: 11px; font-weight: 850; text-align: center; }
.status.in_progress { color: #0b61cc; background: #e7f2ff; }
.status.completed { color: var(--success); background: var(--success-soft); }
.status.missing { color: var(--danger); background: var(--danger-soft); }
.open-btn { width: 100%; min-height: 33px; padding: 6px 8px; font-size: 12px; }

.library-notes { margin: 14px 2px 0; color: var(--muted); font-size: 11px; }
.library-notes p { margin: 6px 0 0; }
.feature-strip {
  width: min(1180px, calc(100% - 36px));
  margin: 16px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.feature-item { display: flex; align-items: center; gap: 11px; min-height: 82px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.feature-item:nth-child(2) .feature-icon { color: #6356ee; background: #efedff; }
.feature-item:nth-child(3) .feature-icon { color: var(--success); background: #e8fbf2; }
.feature-item:nth-child(4) .feature-icon { color: #e29a00; background: #fff6dc; }
.feature-item strong { display: block; font-size: 12px; }
.feature-item span { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; }

/* Footer */
.footer { padding: 34px 0 20px; border-top: 1px solid var(--line); background: #fff; }
.footer-grid { width: min(1180px, calc(100% - 36px)); margin: auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 34px; }
.footer-grid > div { display: flex; flex-direction: column; align-items: flex-start; gap: 5px; }
.footer-grid p { max-width: 280px; color: var(--muted); font-size: 12px; }
.footer-grid strong { margin-bottom: 3px; font-size: 11px; }
.footer-grid a:not(.brand) { color: #64748b; text-decoration: none; font-size: 11px; }
.footer-grid a:hover { color: var(--primary); }
.footer-bottom { width: min(1180px, calc(100% - 36px)); margin: 24px auto 0; padding-top: 14px; display: flex; justify-content: space-between; border-top: 1px solid var(--line); color: #94a3b8; font-size: 10px; }

@media (max-width: 1100px) {
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .nav-links.open {
    position: absolute;
    top: 62px;
    left: 18px;
    right: 18px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 9px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    box-shadow: var(--shadow);
  }
  .nav-links.open > a { text-align: center; }
  .library-toolbar { flex-direction: column; }
  .hero-actions { justify-content: flex-start; }
  .resource-head { flex-direction: column; }
  .resource-actions { justify-content: flex-start; }
  .feature-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 780px) {
  .site-nav-inner, .library-hero, .dashboard-shell, .feature-strip, .footer-grid, .footer-bottom { width: min(100% - 24px, 720px); }
  .site-nav-inner { min-height: 62px; gap: 10px; }
  .nav-actions [data-account-control] { display: none; }
  .nav-cta { padding: 8px 11px; }
  .library-hero { min-height: 220px; margin-top: 12px; background-position: 72% center; }
  .library-hero::after { background: linear-gradient(90deg, rgba(240, 248, 255, .99), rgba(240, 248, 255, .91) 58%, rgba(240, 248, 255, .38)); }
  .hero-copy { width: 72%; padding: 26px 24px; }
  .hero-copy h1 { font-size: 40px; }
  .hero-copy p { font-size: 14px; }
  .dashboard-shell { grid-template-columns: 1fr; }
  .folder-row { grid-template-columns: 16px 22px minmax(0, 1fr); padding-left: calc(10px + var(--depth, 0) * 14px); }
  .folder-meta, .folder-progress-mini { display: none; }
  .tree-lesson-wrap { padding-left: calc(var(--depth, 0) * 14px); }
  .lesson-row { grid-template-columns: minmax(0, 1fr) 98px 76px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}

@media (max-width: 540px) {
  .nav-cta { font-size: 11px; }
  .library-hero { min-height: 250px; background-position: 66% center; }
  .library-hero::after { background: rgba(240, 248, 255, .87); }
  .hero-copy { width: 100%; padding: 24px 20px; }
  .hero-copy h1 { max-width: 390px; font-size: 38px; }
  .overview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .library-content { padding: 12px; }
  .library-toolbar h2 { font-size: 25px; }
  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1 1 calc(50% - 5px); }
  .hero-actions .btn.primary { flex-basis: 100%; }
  .resource-actions .btn { flex: 1 1 calc(50% - 4px); }
  .lesson-row { grid-template-columns: 1fr; gap: 7px; margin-inline: 4px; padding: 10px 8px; }
  .status { justify-self: start; }
  .open-btn { width: 100%; }
  .feature-strip { grid-template-columns: 1fr; }
  .footer-grid { gap: 24px; }
  .footer-bottom { gap: 10px; }
}

.library-sync-summary { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.library-sync-summary > div:first-child { flex: 1 1 320px; }
.library-sync-summary .hero-actions { flex: 0 1 auto; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* Shared site menu appearance: pale blue hover/active state without underlines. */
.nav-links a,
.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.active {
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.active {
  color: var(--primary);
  background: #eff6ff;
}