/* VOVEL design tokens */
:root {
  --bg: #faf8f4; --surface: #ffffff; --surface-2: #f3f0ea;
  --text: #1d1c1a; --muted: #6b6760; --border: #e7e2d9; --border-strong: #d6d0c4;
  --primary: #4f46e5; --primary-hover: #4338ca; --primary-ink: #ffffff; --primary-tint: #eeedfc;
  --success: #1f7a4d; --success-tint: #e6f4ec; --warning: #9a5b00; --warning-tint: #fdf1dc; --danger: #b42318; --danger-tint: #fdecea;
  --info-tint: #eef0fb;
  --radius: 10px; --radius-lg: 16px;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --sidebar: 232px; --shadow: 0 1px 2px rgba(29, 28, 26, .04), 0 4px 16px rgba(29, 28, 26, .04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151412; --surface: #1e1d1a; --surface-2: #27251f; --text: #f1eee8; --muted: #a39e94; --border: #2f2d28; --border-strong: #433f37;
    --primary: #8b85ff; --primary-hover: #a09bff; --primary-ink: #14122e; --primary-tint: #26244a;
    --success: #5dc58d; --success-tint: #17301f; --warning: #f0b95b; --warning-tint: #33270f; --danger: #ff8a7e; --danger-tint: #3a1c18; --info-tint: #212339;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 var(--sans); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5rem; font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: 1.9rem; } h2 { font-size: 1.2rem; } h3 { font-size: 1rem; }
p { margin: 0 0 .8rem; } a { color: var(--primary); }
.serif { font-family: var(--serif); font-weight: 600; letter-spacing: -.005em; }
.muted { color: var(--muted); } .small { font-size: .875rem; } .center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }

/* Layout */
.app { min-height: 100vh; display: grid; grid-template-columns: var(--sidebar) 1fr; }
.sidebar { position: sticky; top: 0; height: 100vh; padding: 24px 16px; border-right: 1px solid var(--border); display: flex; flex-direction: column; gap: 20px; }
.brand { font-size: 1.6rem; text-decoration: none; color: var(--text); padding: 0 10px; } .brand span { color: var(--primary); }
.sidebar ul, ul.plain, ol.plain { list-style: none; margin: 0; padding: 0; }
.sidebar nav a { display: flex; gap: 10px; align-items: center; padding: 9px 10px; border-radius: 8px; color: var(--muted); text-decoration: none; font-weight: 500; }
.sidebar nav a:hover { background: var(--surface-2); color: var(--text); }
.sidebar nav a[aria-current="page"] { background: var(--primary-tint); color: var(--primary); }
.ico { width: 1.2em; text-align: center; } .side-note { margin-top: auto; padding: 0 10px; }
.content { padding: 24px clamp(16px, 4vw, 48px) 96px; max-width: 980px; width: 100%; }
main:focus { outline: none; }
.topsearch { display: flex; gap: 8px; margin-bottom: 28px; }
.page-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 20px; }
.page-head p { margin: 0; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; } .row.between { justify-content: space-between; } .row.end { justify-content: flex-end; } .grow { flex: 1; min-width: 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; } .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }

/* Controls */
.btn { font: inherit; font-weight: 550; padding: 9px 16px; min-height: 44px; border-radius: var(--radius); border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px; transition: background .15s, border-color .15s, transform .1s; }
.btn:hover { background: var(--surface-2); } .btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); } .btn-primary:hover { background: var(--primary-hover); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: transparent; } .btn-danger:hover { background: var(--danger-tint); }
.btn-lg { min-height: 52px; padding: 12px 24px; font-size: 1.05rem; } .small-btn { min-height: 36px; padding: 4px 12px; font-size: .875rem; }
.input { font: inherit; width: 100%; padding: 10px 12px; min-height: 44px; border: 1px solid var(--border-strong); border-radius: var(--radius); background: var(--surface); color: var(--text); }
textarea.input { resize: vertical; } .input-lg { min-height: 54px; font-size: 1.15rem; }
.field { display: block; margin: 0 0 14px; border: 0; padding: 0; } .field > span, .field > legend { display: block; font-size: .875rem; font-weight: 600; margin-bottom: 4px; padding: 0; }
.check { display: inline-flex; gap: 8px; align-items: center; min-height: 44px; } .check input { width: 18px; height: 18px; accent-color: var(--primary); }
.searchbar { display: flex; gap: 8px; margin-bottom: 20px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.chip { font: inherit; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); cursor: pointer; min-height: 40px; }
.chip:hover { border-color: var(--primary); } .chip-hint { background: var(--primary-tint); border-color: var(--primary); }
.chip-check { border: 1px solid var(--border-strong); border-radius: 999px; padding: 0 14px; background: var(--surface); }

/* Surfaces */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px; margin-bottom: 16px; box-shadow: var(--shadow); }
.banner { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; padding: 14px 16px; border-radius: var(--radius); margin-bottom: 16px; border: 1px solid transparent; }
.banner-info { background: var(--info-tint); border-color: var(--border); } .banner-ok { background: var(--success-tint); color: var(--success); border-color: var(--success); }
.banner-warn { background: var(--warning-tint); color: var(--warning); border-color: var(--warning); }
.empty { text-align: center; padding: 48px 20px; border: 1px dashed var(--border-strong); border-radius: var(--radius-lg); margin-bottom: 16px; } .empty .btn { margin-top: 14px; }
.pill { font-size: .75rem; font-weight: 600; padding: 2px 10px; border-radius: 999px; background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.pill-learning { background: var(--warning-tint); color: var(--warning); } .pill-familiar { background: var(--primary-tint); color: var(--primary); } .pill-mastered { background: var(--success-tint); color: var(--success); }
.danger-zone { border-color: var(--border-strong); }
.dialog { border: 1px solid var(--border-strong); border-radius: var(--radius-lg); background: var(--surface); color: var(--text); padding: 24px; width: min(92vw, 460px); box-shadow: 0 24px 64px rgba(0,0,0,.25); }
.dialog::backdrop { background: rgba(20, 18, 14, .5); }
.toasts { position: fixed; right: 16px; bottom: 88px; display: grid; gap: 8px; z-index: 40; max-width: min(92vw, 380px); }
.toast { padding: 12px 16px; border-radius: var(--radius); background: var(--text); color: var(--bg); box-shadow: 0 8px 24px rgba(0,0,0,.2); animation: rise .25s ease-out; }
.toast-warn { background: var(--warning); color: #fff; }

/* Lists */
.list { display: grid; gap: 8px; margin-bottom: 16px; }
.word-row { display: grid; grid-template-columns: minmax(110px, 180px) 1fr auto; gap: 14px; align-items: center; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); text-decoration: none; }
.word-row:hover { border-color: var(--primary); } .word-title { font-size: 1.2rem; }
.two-col .word-row { grid-template-columns: 1fr auto; grid-template-areas: "w m" "d d"; gap: 4px 12px; }
.two-col .word-row .word-title { grid-area: w; } .two-col .word-row .clamp { grid-area: d; } .two-col .word-row .row-meta { grid-area: m; }
.row-meta { display: grid; justify-items: end; gap: 2px; } .clamp { overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.word-row-wrap { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; }
.filters { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 8px; margin-bottom: 16px; align-items: center; } .filters .check { grid-column: auto; }
.coll-row { display: flex; gap: 12px; align-items: center; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); text-decoration: none; color: var(--text); flex-wrap: wrap; justify-content: space-between; }
.coll-name { color: var(--text); font-size: 1.15rem; text-decoration: none; }

/* Entry / word */
.entry-word { font-size: clamp(2.2rem, 6vw, 3.2rem); margin: 0; }
.entry-head { display: grid; gap: 6px; margin-bottom: 8px; justify-items: start; }
.source-tag { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.meaning { padding: 12px 0; border-top: 1px solid var(--border); } .meaning-picked { border-left: 3px solid var(--primary); padding-left: 12px; }
.meaning ol { margin: 6px 0 8px 1.2em; padding: 0; } .ex { font-size: .9rem; } .pos { font-family: var(--serif); font-size: 1.05rem; }
.definition { font-family: var(--serif); font-size: 1.25rem; line-height: 1.5; }
.capture { border-top: 1px solid var(--border); margin-top: 12px; padding-top: 16px; }
.context-quote { font-size: 1.15rem; border-left: 3px solid var(--primary); padding-left: 14px; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 16px 0 0; } .facts dt { font-size: .8rem; color: var(--muted); } .facts dd { margin: 0; font-weight: 600; }
.back { text-decoration: none; }

/* Dashboard */
.hero { max-width: 620px; margin: 8vh auto; text-align: center; } .hero-title { font-size: clamp(2.8rem, 9vw, 4.6rem); margin: .2em 0; } .lede { font-size: 1.25rem; margin-bottom: 1rem; }
.eyebrow { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--primary); }
.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px; } .stat b { display: block; font: 600 2rem/1.1 var(--serif); } .stat span { color: var(--muted); font-size: .85rem; }
.stat-row { display: flex; gap: 28px; flex-wrap: wrap; margin: 12px 0; } .stat-row b { display: block; font: 600 1.8rem/1.1 var(--serif); } .stat-row span { color: var(--muted); font-size: .85rem; }
.bars { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; height: 150px; align-items: end; }
.bar-col { display: grid; grid-template-rows: auto 1fr auto; height: 100%; justify-items: center; gap: 4px; }
.bar-track { width: 100%; max-width: 36px; display: flex; align-items: flex-end; background: var(--surface-2); border-radius: 6px; } .bar-fill { width: 100%; background: var(--primary); border-radius: 6px; min-height: 0; transition: height .5s ease; }
.bar-n { font-size: .8rem; color: var(--muted); } .bar-l { font-size: .75rem; color: var(--muted); }

/* Learning */
.flash { max-width: 640px; margin: 0 auto; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: clamp(20px, 5vw, 44px); box-shadow: var(--shadow); }
.flash-word { font-size: clamp(2.6rem, 9vw, 4rem); text-align: center; margin: .2em 0 .1em; word-break: break-word; }
.flash-def { font: 1.35rem/1.5 var(--serif); text-align: center; } .flash-example { text-align: center; color: var(--muted); font-style: italic; }
.reveal { animation: rise .3s ease-out; }
.progress-line { height: 4px; background: var(--surface-2); border-radius: 4px; overflow: hidden; margin-bottom: 12px; } .progress-line span { display: block; height: 100%; background: var(--primary); transition: width .3s; }
.ratings { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 8px; }
.rate { flex-direction: column; gap: 2px; min-height: 76px; position: relative; } .rate small { color: var(--muted); font-weight: 400; } .rate kbd { position: absolute; top: 4px; right: 8px; font-size: .7rem; color: var(--muted); }
.rate-again:hover { border-color: var(--danger); } .rate-good:hover, .rate-easy:hover { border-color: var(--success); }
.kbd-hint { margin-top: 12px; } .summary h2 { font-size: 1.6rem; }
.success-pop { animation: pop .35s cubic-bezier(.2, 1.2, .4, 1); }
.use-card h2 { font-size: 1.6rem; margin: 0; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes pop { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: none; } }

/* Onboarding */
.onboarding { width: min(92vw, 520px); } .ob-body { min-height: 190px; } .ob-body h2 { font-size: 1.8rem; }
.dots { display: flex; gap: 6px; margin-bottom: 16px; } .dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); } .dots i.on { background: var(--primary); width: 22px; border-radius: 4px; }

/* Mobile tab bar */
.tabbar { display: none; }
@media (max-width: 820px) {
  .app { grid-template-columns: 1fr; } .sidebar { display: none; }
  .content { padding: 16px 16px 110px; }
  .tabbar { display: grid; grid-template-columns: repeat(5, 1fr); position: fixed; left: 0; right: 0; bottom: 0; background: var(--surface); border-top: 1px solid var(--border); padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); z-index: 30; }
  .tabbar a { display: grid; justify-items: center; gap: 0; font-size: .7rem; padding: 6px 2px; min-height: 52px; color: var(--muted); text-decoration: none; border-radius: 10px; } .tabbar a[aria-current="page"] { color: var(--primary); background: var(--primary-tint); }
  .tabbar .fab { position: absolute; right: 14px; top: -64px; width: 56px; height: 56px; border-radius: 50%; background: var(--primary); color: var(--primary-ink); font-size: 1.6rem; box-shadow: 0 6px 18px rgba(79, 70, 229, .4); display: grid; place-items: center; padding: 0; }
  .stats { grid-template-columns: repeat(2, 1fr); } .two-col, .grid2, .filters { grid-template-columns: 1fr; }
  .word-row { grid-template-columns: 1fr; gap: 4px; } .row-meta { justify-items: start; grid-auto-flow: column; gap: 8px; }
  .facts { grid-template-columns: 1fr 1fr; } .ratings { grid-template-columns: 1fr 1fr; } .rate { min-height: 64px; }
  .topsearch .btn { display: none; } .toasts { bottom: 120px; right: 12px; left: 12px; max-width: none; }
  h1 { font-size: 1.6rem; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }