/* Layout: one phone-first reading column; sticky top bar for progress, fixed bottom bar for the next action within thumb reach. */
:root {
  --bg: #F3F5F9;
  --surface: #FFFFFF;
  --ink: #17203A;
  --muted: #586180;
  --line: #DCE1EB;
  --gold: #9A6A14;
  --gold-bright: #C8962E;
  --gold-soft: #F5EAD2;
  --blue: #2B4A93;
  --blue-soft: #E3E9F7;
  --good: #1F6E4C;
  --good-soft: #DDF1E6;
  --bad: #A23826;
  --bad-soft: #F8E1DB;
  --shadow: 0 1px 2px rgba(23, 32, 58, .06), 0 4px 16px rgba(23, 32, 58, .06);
  --serif: "Crimson Pro", "Iowan Old Style", Georgia, serif;
  --sans: "Libre Franklin", "Segoe UI", system-ui, -apple-system, sans-serif;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0F1428; --surface: #171E37; --ink: #E7EAF4; --muted: #A2AAC4; --line: #2A3456;
    --gold: #E2B65A; --gold-bright: #E9C06A; --gold-soft: #3A3120; --blue: #93ACEE; --blue-soft: #22305C;
    --good: #6DCB9F; --good-soft: #163B2C; --bad: #F08F7B; --bad-soft: #46241E;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0F1428; --surface: #171E37; --ink: #E7EAF4; --muted: #A2AAC4; --line: #2A3456;
  --gold: #E2B65A; --gold-bright: #E9C06A; --gold-soft: #3A3120; --blue: #93ACEE; --blue-soft: #22305C;
  --good: #6DCB9F; --good-soft: #163B2C; --bad: #F08F7B; --bad-soft: #46241E;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.25);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}
body::before {
  content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px);
  z-index: 10; background: var(--bg);
}
button { font: inherit; color: inherit; }
a { color: var(--blue); }
:focus-visible { outline: 3px solid var(--gold-bright); outline-offset: 2px; border-radius: 6px; }
h1, h2, h3 { text-wrap: balance; margin: 0; }

.wrap {
  max-width: 640px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 16px 132px;
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  max-width: 640px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 10px;
  display: flex; align-items: center; gap: 12px;
}
.iconbtn {
  border: 0; background: transparent; width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center; cursor: pointer; flex: none;
}
.iconbtn:hover { background: var(--blue-soft); }
.iconbtn svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.topbar-title { flex: 1; min-width: 0; font-weight: 600; font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.segs { display: flex; gap: 3px; flex: 1; min-width: 0; }
.seg { height: 6px; flex: 1; border-radius: 3px; background: var(--line); }
.seg.done { background: var(--gold-bright); }
.seg.now { background: var(--blue); }

/* ---------- bottom action bar ---------- */
.actionbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 6;
  background: var(--surface); border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.actionbar-in {
  max-width: 640px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 12px;
  display: flex; gap: 10px; align-items: center;
}
.btn {
  border: 0; border-radius: 12px; padding: 14px 18px; font-weight: 600; font-size: 16px;
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px;
}
.btn svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn-primary { background: var(--blue); color: var(--surface); flex: 1; }
.btn-primary:disabled { opacity: .4; cursor: not-allowed; }
.btn-ghost { background: var(--blue-soft); color: var(--blue); }
.btn-gold { background: var(--gold-soft); color: var(--gold); }
.btn-wide { width: 100%; }

/* ---------- home ---------- */
.hero { padding-block: 20px 8px; display: grid; gap: 6px; }
.hero .from { color: var(--muted); font-size: 14px; }
.hero h1 { font-family: var(--serif); font-weight: 600; font-size: clamp(40px, 11vw, 56px); line-height: 1; letter-spacing: -.01em; }
.hero p { margin: 4px 0 0; color: var(--muted); max-width: 52ch; }

.outline-strip { margin-top: 18px; display: grid; grid-template-columns: repeat(22, 1fr); gap: 2px; }
.outline-strip span { height: 28px; border-radius: 3px; background: var(--line); position: relative; }
.outline-strip span.p-seen { background: var(--gold-bright); }
.outline-strip span.p-are { background: color-mix(in srgb, var(--gold-bright) 55%, var(--surface)); }
.outline-strip span.p-after { background: color-mix(in srgb, var(--blue) 45%, var(--surface)); }
.outline-strip span.studied::after { content: ""; position: absolute; inset: auto 0 -6px 0; height: 3px; border-radius: 2px; background: var(--ink); }
.strip-legend { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-top: 10px; font-variant-numeric: tabular-nums; }

.today { display: grid; gap: 10px; margin-top: 26px; }
.tile {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; display: flex; align-items: center; gap: 14px; cursor: pointer; text-align: left; width: 100%;
}
.tile:hover { border-color: var(--blue); }
.tile.primary { border-color: var(--blue); box-shadow: var(--shadow); }
.tile .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; flex: none; background: var(--blue-soft); color: var(--blue); }
.tile.goldish .ico { background: var(--gold-soft); color: var(--gold); }
.tile .ico svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.tile .txt { flex: 1; min-width: 0; }
.tile .txt b { display: block; font-size: 16px; }
.tile .txt small { color: var(--muted); font-size: 14px; }
.tile .count { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 20px; color: var(--blue); }

.section-h { margin: 34px 0 10px; font-size: 13px; font-weight: 600; color: var(--muted); letter-spacing: .02em; }
.lessons { display: grid; gap: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.lrow { display: flex; gap: 14px; align-items: center; padding: 13px 16px; border-top: 1px solid var(--line); background: none; border-left: 0; border-right: 0; border-bottom: 0; width: 100%; text-align: left; cursor: pointer; }
.lrow:first-child { border-top: 0; }
.lrow:disabled { cursor: default; }
.lrow .num { width: 44px; flex: none; font-family: var(--serif); font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; color: var(--gold); }
.lrow:disabled .num { color: var(--muted); opacity: .6; }
.lrow .meta { flex: 1; min-width: 0; }
.lrow .meta b { display: block; font-weight: 600; font-size: 15px; }
.lrow:disabled .meta b { color: var(--muted); font-weight: 500; }
.lrow .meta small { color: var(--muted); font-size: 13px; }
.chip { font-size: 12px; font-weight: 600; padding: 3px 9px; border-radius: 99px; flex: none; }
.chip.done { background: var(--good-soft); color: var(--good); }
.chip.ready { background: var(--blue-soft); color: var(--blue); }
.chip.going { background: var(--gold-soft); color: var(--gold); }
.chip.soon { color: var(--muted); border: 1px solid var(--line); }
.foot { margin-top: 34px; font-size: 12px; color: var(--muted); }
.foot p { margin: 0 0 6px; }

/* ---------- lesson: intro ---------- */
.intro { display: grid; gap: 14px; padding-top: 12px; }
.intro .passage { color: var(--gold); font-weight: 600; font-size: 14px; }
.intro h1 { font-family: var(--serif); font-size: clamp(32px, 8vw, 42px); line-height: 1.08; font-weight: 600; }
.intro .big { font-family: var(--serif); font-size: 21px; line-height: 1.45; margin: 0; }
.howto { display: grid; gap: 8px; margin: 6px 0 0; padding: 0; list-style: none; counter-reset: s; }
.howto li { display: flex; gap: 12px; align-items: baseline; counter-increment: s; }
.howto li::before { content: counter(s); font-variant-numeric: tabular-nums; font-weight: 700; color: var(--gold); width: 18px; flex: none; }
.links { display: flex; flex-wrap: wrap; gap: 8px; }
.links a { font-size: 14px; padding: 8px 12px; border-radius: 99px; background: var(--surface); border: 1px solid var(--line); text-decoration: none; color: var(--ink); }
.links a:hover { border-color: var(--blue); }
.choice { display: grid; gap: 10px; margin-top: 6px; }

/* ---------- burst ---------- */
.burst { display: grid; gap: 16px; padding-top: 14px; }
.burst-head { display: grid; gap: 4px; }
.burst-head .where { font-size: 13px; color: var(--gold); font-weight: 600; }
.burst-head h2 { font-family: var(--serif); font-weight: 600; font-size: 30px; line-height: 1.12; }
.verse {
  margin: 0; padding: 14px 16px; border-radius: 12px; background: var(--gold-soft);
  font-family: var(--serif); font-size: 19px; line-height: 1.45; font-style: italic;
}
.verse cite { display: block; font-style: normal; font-family: var(--sans); font-size: 13px; color: var(--gold); margin-top: 6px; font-weight: 600; }
.lines { font-family: var(--serif); font-size: 21px; line-height: 1.55; display: grid; gap: 12px; }
.lines p { margin: 0; padding: 2px 8px; margin-inline: -8px; border-radius: 8px; transition: background-color .25s, color .25s; cursor: pointer; }
.lines.playing p { color: var(--muted); }
.lines.playing p.on { color: var(--ink); background: var(--gold-soft); }
.keyline { border-left: 4px solid var(--gold-bright); padding: 4px 0 4px 14px; font-weight: 600; font-size: 17px; }
.player { display: flex; align-items: center; gap: 10px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 8px; }
.player .btn { min-height: 44px; padding: 10px 14px; }
.player .rate { margin-left: auto; border: 1px solid var(--line); background: transparent; border-radius: 8px; padding: 8px 10px; font-variant-numeric: tabular-nums; font-size: 14px; cursor: pointer; }
.voicepick-host:empty { display: none; }
.voicepick { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); margin-top: -6px; }
.voicepick select { flex: 1; min-width: 0; font: inherit; font-size: 15px; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
.visual { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; overflow-x: auto; }
.visual svg { display: block; width: 100%; height: auto; max-width: 100%; }
.visual svg text { font-family: var(--sans); }

.keytable { width: 100%; border-collapse: collapse; font-size: 14px; line-height: 1.35; }
.keytable th { text-align: left; font-size: 12px; font-weight: 600; color: var(--muted); padding: 0 8px 8px 0; }
.keytable td { padding: 9px 8px 9px 0; border-top: 1px solid var(--line); vertical-align: top; }
.keytable td:last-child { color: var(--muted); white-space: nowrap; font-size: 12px; }
.keytable td b { color: var(--gold); }

/* ---------- questions ---------- */
.qcard { display: grid; gap: 12px; }
.qcard .qlabel { font-size: 13px; font-weight: 600; color: var(--blue); }
.qcard h3 { font-family: var(--serif); font-size: 24px; line-height: 1.25; font-weight: 600; }
.opts { display: grid; gap: 8px; }
.opt {
  text-align: left; padding: 14px 14px 14px 12px; border-radius: 12px; border: 2px solid var(--line);
  background: var(--surface); cursor: pointer; display: flex; gap: 12px; align-items: flex-start; font-size: 16px; line-height: 1.35;
}
.opt .let { width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--line); display: grid; place-items: center; font-size: 13px; font-weight: 700; flex: none; color: var(--muted); }
.opt:hover:not(:disabled) { border-color: var(--blue); }
.opt:disabled { cursor: default; }
.opt.picked { border-color: var(--blue); background: var(--blue-soft); }
.opt.picked .let { background: var(--blue); border-color: var(--blue); color: var(--surface); }
.verse { cursor: pointer; transition: box-shadow .25s; }
.verse.on { box-shadow: 0 0 0 3px var(--gold-bright); }
.opt.right { border-color: var(--good); background: var(--good-soft); }
.opt.right .let { background: var(--good); border-color: var(--good); color: var(--surface); }
.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.opt.wrong .let { background: var(--bad); border-color: var(--bad); color: var(--surface); }
.feedback { border-radius: 12px; padding: 12px 14px; font-size: 15px; }
.feedback b { display: block; margin-bottom: 2px; }
.feedback.good { background: var(--good-soft); color: var(--ink); }
.feedback.good b { color: var(--good); }
.feedback.bad { background: var(--bad-soft); color: var(--ink); }
.feedback.bad b { color: var(--bad); }

/* ---------- drills ---------- */
.drill { display: grid; gap: 14px; padding-top: 14px; }
.drill h2 { font-family: var(--serif); font-size: 28px; font-weight: 600; line-height: 1.15; }
.drill .prompt { color: var(--muted); margin: 0; }
.slots { display: grid; gap: 6px; }
.slot { min-height: 50px; border: 2px dashed var(--line); border-radius: 12px; display: flex; align-items: center; gap: 10px; padding: 8px 12px; font-weight: 600; }
.slot .n { color: var(--gold); font-variant-numeric: tabular-nums; width: 18px; }
.slot.filled { border-style: solid; border-color: var(--blue); background: var(--blue-soft); }
.slot.ok { border-color: var(--good); background: var(--good-soft); }
.slot.no { border-color: var(--bad); background: var(--bad-soft); }
.pool { display: flex; flex-wrap: wrap; gap: 8px; }
.piece {
  border: 2px solid var(--line); background: var(--surface); border-radius: 12px; padding: 12px 14px;
  font-weight: 600; cursor: pointer; text-align: left; font-size: 15px; line-height: 1.3;
}
.piece:hover { border-color: var(--blue); }
.piece.sel { border-color: var(--blue); background: var(--blue-soft); box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 25%, transparent); }
.piece.used { visibility: hidden; }
.piece.ok { border-color: var(--good); background: var(--good-soft); cursor: default; }
.piece.shake { animation: shake .35s; border-color: var(--bad); }
@keyframes shake { 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }
.match { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.match .col { display: grid; gap: 8px; align-content: start; min-width: 0; }
.match .piece { width: 100%; }
.buckets { display: grid; gap: 8px; }
.bucket { border: 2px solid var(--line); border-radius: 12px; padding: 10px 12px; background: var(--surface); cursor: pointer; text-align: left; display: grid; gap: 6px; }
.bucket.armed { border-color: var(--blue); }
.bucket b { font-size: 14px; color: var(--gold); }
.bucket .in { display: flex; flex-wrap: wrap; gap: 6px; }
.bucket .in span { font-size: 13px; background: var(--good-soft); color: var(--ink); border-radius: 8px; padding: 4px 8px; }
.builtverse { min-height: 90px; border-radius: 12px; background: var(--gold-soft); padding: 14px; font-family: var(--serif); font-size: 21px; line-height: 1.45; font-style: italic; }
.builtverse .ghost { color: var(--muted); font-style: normal; font-family: var(--sans); font-size: 15px; }

/* ---------- quiz result / teach ---------- */
.score { display: grid; place-items: center; gap: 8px; text-align: center; padding-top: 24px; }
.score .big { font-family: var(--serif); font-size: 72px; line-height: 1; font-weight: 600; font-variant-numeric: tabular-nums; }
.score p { margin: 0; color: var(--muted); max-width: 40ch; }
.missed { display: grid; gap: 8px; margin-top: 18px; }
.missed div { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; font-size: 15px; }
.missed b { display: block; }
.timer { font-family: var(--serif); font-size: 64px; font-weight: 600; font-variant-numeric: tabular-nums; text-align: center; line-height: 1; }
.checks { display: grid; gap: 6px; }
.checks label { display: flex; gap: 12px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px; cursor: pointer; font-size: 15px; line-height: 1.4; }
.checks input { width: 22px; height: 22px; flex: none; accent-color: var(--good); margin: 0; }
.checks label:has(input:checked) { border-color: var(--good); background: var(--good-soft); }
textarea { width: 100%; min-height: 110px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); padding: 12px; font: inherit; font-size: 16px; resize: vertical; }
.done-hero { text-align: center; padding-top: 26px; display: grid; gap: 10px; justify-items: center; }
.done-hero h1 { font-family: var(--serif); font-size: 40px; font-weight: 600; }
.done-hero p { color: var(--muted); margin: 0; max-width: 42ch; }

/* ---------- drive ---------- */
.drive { display: grid; gap: 18px; padding-top: 18px; }
.drive .qtext { font-family: var(--serif); font-size: 28px; line-height: 1.25; font-weight: 600; }
.drive .dopts { display: grid; gap: 6px; font-size: 18px; }
.drive .dopts div { padding: 8px 12px; border-radius: 10px; }
.drive .dopts div.ans { background: var(--good-soft); font-weight: 600; }
.drive .phase { font-size: 14px; color: var(--gold); font-weight: 600; font-variant-numeric: tabular-nums; }
.drive .why { color: var(--muted); font-size: 17px; }
.bigplay { width: 96px; height: 96px; border-radius: 50%; border: 0; background: var(--blue); color: var(--surface); display: grid; place-items: center; cursor: pointer; justify-self: center; }
.bigplay svg { width: 40px; height: 40px; fill: currentColor; stroke: none; }

/* ---------- map ---------- */
.mapgrid { display: grid; gap: 12px; margin-top: 14px; }
.piececard { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: grid; gap: 10px; }
.piececard.locked { opacity: .55; }
.piececard h3 { font-family: var(--serif); font-size: 22px; font-weight: 600; }
.piececard small { color: var(--muted); }

.notice { background: var(--blue-soft); border-radius: 12px; padding: 12px 14px; font-size: 15px; }
.empty { text-align: center; color: var(--muted); padding: 30px 0; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}