/* CourseHub — "Course Library" design system.
 * Light surface, near-black ink and chrome, orange primary accent,
 * green success, red danger — all tuned to clear WCAG AA (4.5:1) as both
 * text-on-white and white-text-on-fill, since each is used both ways.
 * Tokens first, then layout, then components. No CSS framework underneath.
 */

:root {
  /* Ground and surfaces — light and clean */
  --paper:       #F2F0EA;
  --surface:     #FFFFFF;
  --card:        #FFFFFF;

  /* Dark chrome — sidebar + mobile tab bar only; the rest of the app stays light */
  --chrome-bg:      #14110D;
  --chrome-bg-2:    #201A13;
  --chrome-line:    #322B21;
  --chrome-ink:     #F7F5F1;
  --chrome-ink-dim: #A79E8F;
  --chrome-hover:   #221C15;
  /* Brighter orange for accent TEXT directly on dark chrome (mobile active
     tab) — --accent itself is tuned for use on white and is too dark there. */
  --chrome-accent:  #FB923C;

  /* Lines, from strongest to faintest */
  --line-strong: #C7C0B5;
  --line:        #E1DCD2;
  --line-soft:   #EEEAE3;

  /* Ink — near-black, each step still clears 4.5:1 on white */
  --ink:   #100F0D;
  --ink-2: #3A3630;
  --ink-3: #5C564D;
  --ink-4: #756D5D;

  /* Accent — orange, primary actions/links/selection/in-progress */
  --accent:       #C2410C;
  --accent-hover: #9A3209;
  --accent-soft:  #FEF0E4;
  --accent-tint:  #FDF0E3;
  --accent-line:  #EFAE79;

  /* Success — green, completed/correct/passed */
  --success:      #15803D;
  --success-hover: #116430;
  --success-soft: #E9F7EC;
  --success-tint: #EBF7EE;
  --success-line: #9AD6AC;

  /* Danger — red, errors/reset/wrong */
  --danger:       #C7222A;
  --danger-hover: #A11C22;
  --danger-soft:  #FCE6E5;
  --danger-line:  #F0AAAA;

  /* Hovers */
  --hover:     #E9E4DA;
  --row-hover: #F5F2EC;

  /* Course colours — one is picked per course from its id. Darkened from the
     original mutes so white overlay text on a thumbnail clears 4.5:1. */
  --clay:  #B85A2E;
  --sage:  #3F7A50;
  --slate: #374B5C;
  --sand:  #96691C;
  --plum:  #7A4560;
  --sky:   #2E6A8C;

  --shadow-card:  0 1px 2px rgba(16, 15, 13, .08);
  --shadow-frame: 0 4px 16px rgba(16, 15, 13, .12);
  --shadow-pop:   0 8px 24px rgba(16, 15, 13, .28);

  /* One typeface everywhere — headings, body and numerals/paths all render
     in Inter. --font-display/--font-mono are kept as separate variables (not
     collapsed into --font-ui) so weight/size rules that reference them stay
     meaningful call sites, even though all three resolve to the same family. */
  --font-ui: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  --plyr-color-main: var(--accent);
  --plyr-video-background: #100F0D;
}

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

/* Layout classes below set `display`, which would otherwise beat the UA's
   `[hidden] { display: none }`. */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.015em; margin: 0; }
h1 { font-size: 36px; line-height: 1.1; }
h2 { font-size: 24px; line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-family: var(--font-ui); font-size: 17px; line-height: 1.3; letter-spacing: 0; }
p  { margin: 0; }

a { color: var(--accent); text-decoration-color: var(--accent-line); text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }

button, input { font-family: inherit; font-size: inherit; }

.mono { font-family: var(--font-mono); font-weight: 500; }

/* Small text utilities, so views don't hand-roll font sizes inline and drift
   out of the scale above. */
.mono-sm { font: 500 14px/1 var(--font-mono); color: var(--ink-3); }
.hint-inline { font: 500 15px/1.4 var(--font-ui); color: var(--ink-3); }

/* --font-mono no longer points at an actual monospace face (everything is
   Inter now), so durations/counts/paths would drift out of alignment as
   digits change width — tabular-nums keeps every digit the same width
   without needing a separate font. */
.mono, .mono-sm, .shelf-count, .thumb-dur, .row-num, .q-num, .path-row .path {
  font-variant-numeric: tabular-nums;
}
.h-section { font-size: 22px; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 999px; border: 3px solid var(--surface); }
::-webkit-scrollbar-track { background: transparent; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ===========================================================================
   Shell: sidebar + main column (+ mobile tab bar)
   ========================================================================= */

.app {
  display: flex;
  align-items: stretch;
  min-height: 100vh;
  background: var(--surface);
}

.sidebar {
  width: 256px;
  flex: none;
  background: var(--chrome-bg);
  border-right: 1px solid var(--chrome-line);
  display: flex;
  flex-direction: column;
  padding: 16px 12px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 18px;
  text-decoration: none;
  color: var(--chrome-ink);
}
.brand-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--chrome-ink);
  display: flex; align-items: center; justify-content: center;
  flex: none;
}
.brand-name { font: 700 20px/1 var(--font-display); letter-spacing: -0.01em; }

.nav { display: flex; flex-direction: column; gap: 2px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--chrome-ink-dim);
  text-align: left;
  font: 600 16px/1 var(--font-ui);
  cursor: pointer;
  text-decoration: none;
}
.nav-item:hover { background: var(--chrome-hover); color: var(--chrome-ink); }
.nav-item.is-active { background: var(--accent); color: var(--chrome-ink); }
.nav-item.is-active:hover { background: var(--accent-hover); color: var(--chrome-ink); }

.sidebar-rule { height: 1px; background: var(--chrome-line); margin: 16px 4px; }
.sidebar-label {
  font: 600 13px/1 var(--font-ui);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--chrome-ink-dim);
  padding: 4px 10px 10px;
}

.shelf-list { display: flex; flex-direction: column; gap: 2px; }
.shelf-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  text-align: left;
  font: 500 16px/1 var(--font-ui);
  color: var(--chrome-ink-dim);
  cursor: pointer;
  text-decoration: none;
}
.shelf-item:hover { background: var(--chrome-hover); color: var(--chrome-ink); }
.shelf-dot { width: 9px; height: 9px; border-radius: 3px; flex: none; background: var(--c, var(--chrome-ink-dim)); }
.shelf-item span:nth-child(2) { flex: 1; }
.shelf-count { font: 500 14px/1 var(--font-mono); color: var(--chrome-ink-dim); }

.sidebar-spacer { flex: 1; }

.scan-card {
  border: 1px solid var(--chrome-line);
  background: var(--chrome-bg-2);
  border-radius: 12px;
  padding: 12px;
}
.scan-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
  font: 600 14px/1 var(--font-ui);
  color: var(--chrome-ink);
}
.scan-card-head .mono { font-size: 13px; color: var(--chrome-ink-dim); }
.scan-spin { display: flex; }
.is-scanning .scan-spin { animation: spin 1.4s linear infinite; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  height: 72px;
  flex: none;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 32px;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.search {
  flex: 1;
  max-width: 520px;
  display: flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 14px;
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
}
.search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: none;
  background: transparent;
  font: 500 16px/1 var(--font-ui);
  color: var(--ink);
}
.search input::-webkit-search-cancel-button { display: none; }

.topbar-end { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.topbar-totals { font-size: 14px; color: var(--ink-3); }

.avatar {
  width: 34px; height: 34px;
  border: 0;
  border-radius: 999px;
  background: var(--plum);
  color: var(--surface);
  font: 700 14px/1 var(--font-ui);
  cursor: pointer;
  flex: none;
}
.avatar:hover { filter: brightness(1.06); }

.view { flex: 1; padding: 32px; }
.loading { display: flex; justify-content: center; padding: 64px 0; }
.spinner {
  width: 22px; height: 22px;
  border: 2px solid var(--line-strong);
  border-top-color: var(--accent);
  border-radius: 999px;
  display: block;
  animation: spin .8s linear infinite;
}

.tabbar { display: none; }
.scan-mobile { display: none; }

/* ===========================================================================
   Buttons, chips, segmented controls
   ========================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  font: 600 15px/1 var(--font-ui);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { background: var(--row-hover); color: var(--ink); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn-accent { background: var(--accent); border-color: var(--accent); color: var(--surface); }
.btn-accent:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--surface); }

.btn-danger { background: var(--card); border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); color: var(--danger); }

.btn-solid-danger { background: var(--danger); border-color: var(--danger); color: var(--surface); }
.btn-solid-danger:hover { background: var(--danger-hover); border-color: var(--danger-hover); color: var(--surface); }

.btn-light { background: var(--surface); border-color: transparent; color: var(--ink); }
.btn-light:hover { background: var(--line); }

.btn-ghost { background: transparent; border-color: rgba(250, 248, 245, .3); color: var(--surface); }
.btn-ghost:hover { background: rgba(250, 248, 245, .1); color: var(--surface); }

/* Text-only action (used on its own, not on top of .btn). */
.btn-quiet {
  border: 0;
  background: transparent;
  padding: 0;
  font: 600 15px/1 var(--font-ui);
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
}
.btn-quiet:hover { color: var(--accent-hover); }

.btn-block { width: 100%; }
.btn-lg { padding: 12px 20px; font-size: 16px; }
.btn:disabled { opacity: .6; cursor: default; }

.icon-btn {
  width: 34px; height: 34px;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-3);
  cursor: pointer;
  padding: 0;
}
.icon-btn:hover { background: var(--line); color: var(--ink); }

.seg {
  display: flex;
  padding: 3px;
  background: var(--paper);
  border-radius: 9px;
  gap: 2px;
}
.seg button {
  padding: 7px 12px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--ink-3);
  font: 600 15px/1 var(--font-ui);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.seg button.is-on { background: var(--card); color: var(--ink); box-shadow: var(--shadow-card); }
.seg .seg-icon { width: 38px; height: 34px; padding: 0; }

.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.chip {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-2);
  font: 600 15px/1 var(--font-ui);
  cursor: pointer;
  text-decoration: none;
}
.chip:hover { background: var(--row-hover); color: var(--ink); }
.chip.is-on:hover { background: var(--ink); color: var(--surface); }
.chip .dot { width: 7px; height: 7px; border-radius: 999px; background: var(--c, var(--accent)); }
.chip.is-on { background: var(--ink); border-color: var(--ink); color: var(--surface); }

.pill {
  font: 600 13px/1 var(--font-ui);
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  white-space: nowrap;
}
.pill-quiet { background: var(--line-soft); color: var(--ink-3); }

/* ===========================================================================
   Page furniture
   ========================================================================= */

.page { max-width: 1120px; }
.page-narrow { max-width: 760px; }
.page-mid { max-width: 900px; }

.eyebrow {
  font: 600 14px/1 var(--font-ui);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow-sm { font-size: 13px; letter-spacing: .09em; }

.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.page-sub { font: 500 16px/1.5 var(--font-ui); color: var(--ink-2); margin-top: 6px; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.shelf-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.shelf-head .swatch { width: 10px; height: 10px; border-radius: 3px; background: var(--c, var(--accent)); }
.shelf-head h2 { margin: 0; font-size: 22px; }
.shelf-head .rule { flex: 1; height: 1px; background: var(--line); }
.shelf-head .mono { font-size: 14px; color: var(--ink-3); }

.crumbs {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font: 500 15px/1 var(--font-ui);
  color: var(--ink-3);
  margin-bottom: 14px;
}
.crumbs a { color: var(--ink-2); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { color: var(--ink-4); }
.crumbs .here { color: var(--ink); font-weight: 600; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 0;
  background: transparent;
  padding: 0;
  margin-bottom: 16px;
  font: 600 15px/1 var(--font-ui);
  color: var(--ink-2);
  cursor: pointer;
  text-decoration: none;
}
.back-link:hover { color: var(--accent); }

.empty {
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
  padding: 56px 24px;
  text-align: center;
}
.empty h2 { font-size: 22px; margin-bottom: 8px; }
.empty p { font: 500 16px/1.5 var(--font-ui); color: var(--ink-2); margin: 0 0 16px; }

/* ===========================================================================
   Course cards, thumbnails, progress
   ========================================================================= */

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 32px; }
.stack { display: flex; flex-direction: column; gap: 8px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.stat-label { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.stat-label .swatch { width: 8px; height: 8px; border-radius: 3px; background: var(--c, var(--accent)); }
.stat-label span { font: 600 14px/1 var(--font-ui); color: var(--ink-2); }
.stat-value { font: 700 32px/1 var(--font-display); letter-spacing: -0.01em; }
.stat-sub { font: 500 14px/1.4 var(--font-ui); color: var(--ink-3); margin-top: 6px; }

.course-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.course-card:hover { box-shadow: var(--shadow-card); border-color: var(--line-strong); color: inherit; }
.course-card-body { padding: 10px 4px 4px; }
.course-title { font: 700 16px/1.3 var(--font-ui); }
.course-meta { font: 500 14px/1.4 var(--font-ui); color: var(--ink-3); margin-top: 3px; }

/* Colour block standing in for cover art: two soft blobs over a course hue. */
.thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: 8px;
  overflow: hidden;
  background: var(--c, var(--slate));
}
.thumb::before, .thumb::after {
  content: '';
  position: absolute;
  aspect-ratio: 1;
  border-radius: 999px;
  z-index: 0;
}
.thumb::before { top: -30%; right: -12%; width: 62%; background: rgba(255, 255, 255, .2); }
.thumb::after { left: -8%; bottom: -32%; width: 48%; background: rgba(16, 15, 13, .14); }
/* A captured frame sits above the decorative blobs (opaque, so it fully
   hides them once loaded) but below the text/icon overlays. onerror removes
   this element on a 404, leaving the colour-block placeholder untouched. */
.thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
.thumb-cat {
  position: absolute;
  left: 10px; top: 8px;
  font: 700 13px/1 var(--font-ui);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .85);
  text-shadow: 0 1px 3px rgba(16, 15, 13, .55);
  z-index: 2;
}
.thumb-dur {
  position: absolute;
  right: 8px; bottom: 8px;
  font: 500 13px/1 var(--font-mono);
  color: var(--surface);
  background: rgba(16, 15, 13, .55);
  padding: 4px 7px;
  border-radius: 999px;
  z-index: 2;
}
.thumb-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}
.thumb-play span {
  width: 58px; height: 58px;
  border-radius: 999px;
  background: rgba(250, 248, 245, .92);
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
}
.thumb-bar {
  position: absolute;
  inset: auto 0 0 0;
  height: 4px;
  background: rgba(255, 255, 255, .28);
  z-index: 2;
}
.thumb-bar span { display: block; height: 100%; background: var(--surface); }

.initial {
  width: 42px; height: 42px;
  flex: none;
  border-radius: 8px;
  background: var(--c, var(--slate));
  color: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font: 700 17px/1 var(--font-display);
}
.initial-sm { width: 38px; height: 38px; font-size: 16px; }
.initial-lg { width: 50px; height: 50px; font-size: 20px; }

.bar { flex: 1; height: 5px; border-radius: 999px; background: var(--line); overflow: hidden; }
.bar span { display: block; height: 100%; border-radius: 999px; background: var(--c, var(--accent)); }
.bar-row { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.bar-row .mono { font-size: 13px; color: var(--ink-3); }
.bar-lg { height: 6px; }

/* ===========================================================================
   Rows and lists
   ========================================================================= */

.rows {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
.row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 16px;
  min-height: 62px;
  border-bottom: 1px solid var(--line-soft);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.row:last-child { border-bottom: 0; }
.row:hover { background: var(--row-hover); color: inherit; }
.row-main { flex: 1; min-width: 0; }
.row-title {
  font: 600 16px/1.3 var(--font-ui);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.row-sub {
  font: 500 14px/1.3 var(--font-ui);
  color: var(--ink-3);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.row-fixed { width: 320px; flex: none; min-width: 0; }
.row-col { font: 500 14px/1 var(--font-ui); color: var(--ink-2); }
.row-num { font: 500 14px/1 var(--font-mono); color: var(--ink-3); }
.row-bar { flex: 1; display: flex; align-items: center; gap: 10px; min-width: 120px; }
.row-bar .mono { width: 38px; text-align: right; font-size: 13px; color: var(--ink-3); }

/* A row whose trailing control (reset) sits outside the link target. */
.row-link {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 0;
  padding: 9px 0;
  text-decoration: none;
  color: inherit;
}
.row-link:hover { color: inherit; }

/* Free-standing rows (search hits, recent additions) sit apart from each other. */
.row-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.row-card:hover { background: var(--row-hover); color: inherit; }

.play-dot {
  width: 30px; height: 30px;
  flex: none;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--line-soft);
  color: var(--ink-3);
}
.play-dot.is-done { background: var(--success-soft); color: var(--success); }
.play-dot.is-partial { background: var(--accent-tint); color: var(--accent); }

/* ===========================================================================
   Home hero
   ========================================================================= */

.hero {
  display: flex;
  gap: 20px;
  background: var(--ink);
  border-radius: 16px;
  padding: 20px;
  color: var(--surface);
  margin-bottom: 14px;
  text-decoration: none;
}
.hero:hover { color: var(--surface); }
.hero-art { width: 280px; flex: none; position: relative; border-radius: 10px; overflow: hidden; }
.hero-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}
.hero-eyebrow {
  font: 600 13px/1 var(--font-ui);
  letter-spacing: .1em;
  text-transform: uppercase;
  /* The hero card has a dark (var(--ink)) background, so its dim text needs
     the light-on-dark token, not --ink-4 (tuned for dark-on-light). */
  color: var(--chrome-ink-dim);
}
.hero-title { font: 700 28px/1.15 var(--font-display); letter-spacing: -0.01em; }
.hero-sub { font: 500 16px/1.5 var(--font-ui); color: var(--line-strong); }
.hero-progress { display: flex; align-items: center; gap: 12px; margin-top: 4px; }
.hero-progress .bar { max-width: 320px; height: 6px; background: rgba(250, 248, 245, .18); }
.hero-progress .bar span { background: var(--sage); }
.hero-progress .mono { font-size: 14px; color: var(--line-strong); }
.hero-actions { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }

/* ===========================================================================
   Watch screen
   ========================================================================= */

.watch { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 24px; align-items: start; }
.player-frame { background: var(--ink); border-radius: 16px; padding: 12px; }
.player-frame .plyr { border-radius: 10px; overflow: hidden; }
.watch-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.watch-head h1 { font-size: 26px; }
.watch-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.watch-note { font: 500 15px/1 var(--font-ui); color: var(--ink-3); margin-top: 10px; display: flex; align-items: center; gap: 6px; }

.playlist { background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.playlist-head {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  font: 600 15px/1.3 var(--font-ui);
  display: flex;
  align-items: center;
  gap: 8px;
}
.playlist-scroll { max-height: 60vh; overflow-y: auto; }
.playlist .row { min-height: 58px; padding: 0 14px; }
.playlist .row.is-active { background: var(--accent-soft); }
.playlist .row.is-active .row-title { color: var(--accent); font-weight: 700; }

/* ===========================================================================
   Quiz
   ========================================================================= */

.quiz-score {
  display: flex;
  align-items: center;
  gap: 18px;
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 22px;
  background: var(--success-tint);
  border: 1px solid var(--success-line);
  flex-wrap: wrap;
}
.quiz-score.is-fail { background: var(--danger-soft); border-color: var(--danger-line); }
.quiz-score-num { font: 700 44px/1 var(--font-display); color: var(--success); }
.quiz-score.is-fail .quiz-score-num { color: var(--danger); }
.quiz-score-body { flex: 1; min-width: 180px; }
.quiz-score-head { font: 700 17px/1.3 var(--font-ui); color: var(--success); }
.quiz-score.is-fail .quiz-score-head { color: var(--danger); }
.quiz-score-sub { font: 500 15px/1.4 var(--font-ui); color: var(--ink-2); margin-top: 3px; }

.q-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
}
.q-card.is-right { border-color: var(--success-line); }
.q-card.is-wrong { border-color: var(--danger-line); }
.q-head { display: flex; gap: 12px; margin-bottom: 14px; }
.q-num {
  width: 28px; height: 28px;
  flex: none;
  border-radius: 999px;
  background: var(--line-soft);
  color: var(--ink-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font: 600 14px/1 var(--font-mono);
}
.q-card.is-right .q-num { background: var(--success-soft); color: var(--success); }
.q-card.is-wrong .q-num { background: var(--danger-soft); color: var(--danger); }
.q-text { font: 600 17px/1.4 var(--font-ui); text-wrap: pretty; }
.q-note { font: 500 15px/1.4 var(--font-ui); margin-top: 6px; color: var(--success); }
.q-note.is-wrong { color: var(--danger); }
.q-options { display: flex; flex-direction: column; gap: 8px; padding-left: 40px; }

.q-option {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  text-align: left;
  font: 500 16px/1.4 var(--font-ui);
  cursor: pointer;
  width: 100%;
}
.q-option:hover { background: var(--row-hover); }
.q-option .mark {
  width: 18px; height: 18px;
  flex: none;
  border-radius: 999px;
  border: 1.5px solid var(--ink-4);
  background: transparent;
}
.q-option.multi .mark { border-radius: 5px; }
.q-option .label { flex: 1; }
.q-option .tag { font: 600 14px/1 var(--font-ui); color: var(--ink-3); }

.q-option.is-picked { background: var(--accent-soft); border-color: var(--accent); }
.q-option.is-picked .mark { border-color: var(--accent); background: var(--accent); }
.q-option.is-correct { background: var(--success-tint); border-color: var(--success); }
.q-option.is-correct .mark { border-color: var(--success); background: var(--success); }
.q-option.is-correct .tag { color: var(--success); }
.q-option.is-missed { background: var(--danger-soft); border-color: var(--danger); }
.q-option.is-missed .mark { border-color: var(--danger); background: var(--danger); }
.q-option.is-missed .tag { color: var(--danger); }
.q-option:disabled { cursor: default; }

.quiz-actions { display: flex; align-items: center; gap: 14px; margin: 22px 0 8px; flex-wrap: wrap; }
.quiz-actions .hint { font: 500 15px/1 var(--font-ui); color: var(--ink-3); }

/* ===========================================================================
   Settings
   ========================================================================= */

.settings-section { padding: 20px; margin-bottom: 16px; }
.settings-section h3 { margin-bottom: 4px; }
.settings-section > p { font: 500 15px/1.5 var(--font-ui); color: var(--ink-3); margin-bottom: 14px; }
.settings-section.is-danger { border-color: var(--danger-line); }
.settings-section.is-danger h3 { color: var(--danger); }
.settings-section.is-danger > p { color: var(--ink-2); }

.path-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.path-row .path { flex: 1; min-width: 0; font: 500 15px/1.4 var(--font-mono); color: var(--ink-2); word-break: break-all; }
.path-row .count { font: 500 14px/1 var(--font-ui); color: var(--ink-3); white-space: nowrap; }

.toggle-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
}
.toggle-row .label { font: 600 16px/1.3 var(--font-ui); }
.toggle-row .sub { font: 500 15px/1.4 var(--font-ui); color: var(--ink-3); margin-top: 2px; }
.switch {
  width: 42px; height: 24px;
  flex: none;
  border: 0;
  border-radius: 999px;
  padding: 3px;
  cursor: pointer;
  display: flex;
  justify-content: flex-start;
  background: var(--line-strong);
  transition: background 180ms cubic-bezier(.2, 0, 0, 1);
}
.switch span {
  width: 18px; height: 18px;
  border-radius: 999px;
  background: var(--card);
  box-shadow: 0 1px 2px rgba(16, 15, 13, .2);
  transition: transform 180ms cubic-bezier(.2, 0, 0, 1);
}
.switch.is-on { background: var(--accent); }
.switch.is-on span { transform: translateX(18px); }

.fact-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
  font: 500 15px/1.4 var(--font-ui);
  color: var(--ink-2);
}
.fact-row .mono { color: var(--ink-3); font-size: 15px; }

/* ===========================================================================
   Toast, modal, account menu
   ========================================================================= */

.toasts {
  position: fixed;
  left: 24px;
  bottom: 24px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--ink);
  color: var(--surface);
  padding: 13px 16px;
  border-radius: 10px;
  box-shadow: var(--shadow-pop);
  animation: rise 180ms cubic-bezier(.2, 0, 0, 1);
  font: 500 16px/1.35 var(--font-ui);
  max-width: 380px;
}
.toast .glyph { flex: none; display: flex; color: #4ADE80; }
.toast.is-error .glyph { color: #F87171; }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(16, 15, 13, .4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 70;
  padding: 20px;
}
.dialog {
  width: 420px;
  max-width: 100%;
  background: var(--card);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-pop);
  animation: rise 160ms cubic-bezier(.2, 0, 0, 1);
}
.dialog h3 { font-family: var(--font-display); font-size: 22px; line-height: 1.2; margin-bottom: 8px; }
.dialog p { font: 500 16px/1.5 var(--font-ui); color: var(--ink-2); margin-bottom: 20px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; }

.menu {
  position: fixed;
  z-index: 65;
  min-width: 190px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-pop);
  padding: 6px;
}
.menu-user {
  padding: 8px 10px 10px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 6px;
}
.menu-user .who { font: 700 15px/1.3 var(--font-ui); }
.menu-user .what { font: 500 14px/1.3 var(--font-ui); color: var(--ink-3); margin-top: 2px; }
.menu button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ink-2);
  font: 600 15px/1 var(--font-ui);
  text-align: left;
  cursor: pointer;
}
.menu button:hover { background: var(--row-hover); color: var(--ink); }
.menu button.is-danger { color: var(--danger); }
.menu button.is-danger:hover { background: var(--danger-soft); }

/* ===========================================================================
   Auth
   ========================================================================= */

.auth {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card {
  width: 380px;
  max-width: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow-frame);
  padding: 28px;
}
.auth-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.auth-card h1 { font-size: 26px; margin-bottom: 6px; }
.auth-card .sub { font: 500 16px/1.5 var(--font-ui); color: var(--ink-3); margin-bottom: 20px; }
.field { margin-bottom: 14px; }
.field label {
  display: block;
  font: 600 14px/1 var(--font-ui);
  color: var(--ink-2);
  margin-bottom: 6px;
}
.field input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  outline: none;
}
.field input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.auth-actions { display: flex; flex-direction: column; gap: 8px; margin-top: 18px; }
.alert {
  background: var(--danger-soft);
  border: 1px solid var(--danger-line);
  color: var(--danger);
  border-radius: 8px;
  padding: 10px 12px;
  font: 500 15px/1.4 var(--font-ui);
  margin-bottom: 14px;
}

/* ===========================================================================
   Responsive — the design's 390px frame informs everything below 900px
   ========================================================================= */

/* Larger type needs more room in the library list row: drop the state column
   first, then narrow the title column, before the mobile rules take over. */
@media (max-width: 1280px) {
  .row-col { display: none; }
}

@media (max-width: 1100px) {
  .grid, .grid-stats { grid-template-columns: repeat(3, 1fr); }
  .watch { grid-template-columns: minmax(0, 1fr); }
  .playlist-scroll { max-height: 42vh; }
  .row-fixed { width: 240px; }
}

@media (max-width: 900px) {
  .app { flex-direction: column; }
  .sidebar { display: none; }
  .view { padding: 16px 20px 96px; }

  .topbar { height: 64px; padding: 0 20px; gap: 10px; }
  .search { max-width: none; border-radius: 999px; height: 44px; }
  .topbar-totals { display: none; }
  .scan-mobile {
    display: flex;
    width: 42px; height: 42px;
    background: var(--accent);
    color: var(--surface);
  }
  .scan-mobile:hover { background: var(--accent-hover); color: var(--surface); }
  .is-scanning .scan-mobile svg { animation: spin 1.4s linear infinite; }

  .grid, .grid-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  h1 { font-size: 28px; }
  .hero { flex-direction: column; padding: 12px; border-radius: 14px; }
  .hero-art { width: 100%; }
  .hero-title { font-size: 22px; }
  .row-fixed, .row-col { display: none; }
  .q-options { padding-left: 0; }
  .toasts { left: 16px; right: 16px; bottom: 84px; }
  .toast { max-width: none; }

  .tabbar {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 40;
    display: flex;
    padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--chrome-line);
    background: rgba(20, 17, 13, .94);
    backdrop-filter: blur(12px);
  }
  .tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    border: 0;
    background: transparent;
    padding: 6px 0;
    cursor: pointer;
    font: 600 13px/1 var(--font-ui);
    color: var(--chrome-ink-dim);
    text-decoration: none;
  }
  .tab.is-active { color: var(--chrome-accent); }
}

@media (max-width: 560px) {
  .grid-stats { grid-template-columns: 1fr 1fr; }
  .page-head { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .is-scanning .scan-spin, .is-scanning .scan-mobile svg { animation: spin 1.4s linear infinite !important; }
}