/* Premiers pas — French beginner app */
:root {
  --ink: #1c2430;
  --ink-soft: #4a5564;
  --paper: #f4efe6;
  --paper-2: #ebe3d4;
  --card: #fffaf3;
  --line: rgba(28, 36, 48, 0.1);
  --bordeaux: #8a2e38;
  --bordeaux-dark: #6e242c;
  --accent-fg: #fffaf3;
  --pine: #2c5a4e;
  --pine-light: #e4efe9;
  --gold: #b8924a;
  --wrong-bg: #f8e8e8;
  --shadow: 0 10px 30px rgba(28, 36, 48, 0.08);
  --radius: 18px;
  --nav-h: 72px;
  --font-ui: "Sora", "Noto Sans SC", sans-serif;
  --font-fr: "Newsreader", "Noto Serif SC", serif;
  --font-zh: "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font-ui);
  background:
    radial-gradient(1200px 600px at 50% -10%, #efe6d2, transparent 60%),
    var(--paper);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button, input { font-family: inherit; }
button { cursor: pointer; border: 0; background: none; color: inherit; }
a { color: inherit; }

#app {
  min-height: 100%;
  max-width: 480px;
  margin: 0 auto;
  position: relative;
  padding-bottom: calc(var(--nav-h) + env(safe-area-inset-bottom));
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px 12px;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(14px);
}
.topbar h1 {
  font-family: var(--font-fr);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  flex: 1;
}
.topbar .sub { font-size: 0.72rem; color: var(--ink-soft); font-weight: 500; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--card);
  box-shadow: 0 1px 0 var(--line);
}
.streak-pill {
  display: flex; align-items: center; gap: 6px;
  background: var(--card);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 1px 0 var(--line);
}
.streak-pill span.fire { font-size: 1rem; }

/* Bottom nav */
.nav {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: min(480px, 100%);
  height: calc(var(--nav-h) + env(safe-area-inset-bottom));
  padding: 8px 10px env(safe-area-inset-bottom);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: color-mix(in srgb, var(--card) 92%, transparent);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--line);
  z-index: 30;
}
.nav button {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  font-size: 0.68rem; font-weight: 600; color: var(--ink-soft);
  padding: 6px 0;
  border-radius: 12px;
}
.nav button.active { color: var(--bordeaux); }
.nav svg { width: 22px; height: 22px; }

/* Shared */
.page { padding: 6px 18px 28px; animation: rise 0.35s ease; }
@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
.greeting { font-size: 0.85rem; color: var(--ink-soft); font-weight: 500; }
.headline {
  font-family: var(--font-fr);
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 2px 0 16px;
  line-height: 1.2;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.card + .card { margin-top: 12px; }

.kicker {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 6px;
}
.card h2 { font-size: 1.15rem; font-weight: 650; margin-bottom: 6px; }
.muted { color: var(--ink-soft); font-size: 0.92rem; }
.fr { font-family: var(--font-fr); font-style: italic; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 100%; min-height: 48px; padding: 12px 16px;
  border-radius: 14px; font-weight: 650; font-size: 1rem;
  transition: transform 0.12s ease, background 0.12s ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--bordeaux); color: var(--accent-fg); }
.btn-primary:hover { background: var(--bordeaux-dark); }
.btn-ghost {
  background: transparent; color: var(--ink);
  border: 1px solid var(--line);
}
.btn-pine { background: var(--pine); color: #f6fffb; }
.btn[disabled] { opacity: 0.45; cursor: default; transform: none; }

.row-actions { display: flex; gap: 8px; margin-top: 14px; }
.row-actions .btn { flex: 1; }

/* Today stats */
.stats {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px;
  margin-bottom: 14px;
}
.stat {
  background: var(--card);
  border-radius: 14px;
  padding: 12px 10px;
  text-align: center;
  border: 1px solid var(--line);
}
.stat b { display: block; font-size: 1.2rem; font-family: var(--font-fr); }
.stat span { font-size: 0.7rem; color: var(--ink-soft); }

/* Course path */
.path { position: relative; padding: 8px 0 20px; }
.path::before {
  content: "";
  position: absolute; left: 27px; top: 20px; bottom: 20px;
  width: 2px; background: var(--paper-2);
}
.path-item {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 10px;
  align-items: stretch;
  margin-bottom: 12px;
}
.node {
  width: 38px; height: 38px; border-radius: 50%;
  margin: 10px 0 0 8px;
  display: grid; place-items: center;
  font-weight: 700; font-size: 0.85rem;
  background: var(--paper-2); color: var(--ink-soft);
  border: 2px solid #ddd3c2;
  z-index: 1;
}
.path-item.done .node { background: var(--pine); color: #fff; border-color: var(--pine); }
.path-item.current .node {
  background: var(--bordeaux); color: var(--accent-fg); border-color: var(--bordeaux);
  box-shadow: 0 0 0 6px rgba(138, 46, 56, 0.16);
}
.path-item.locked .card { opacity: 0.55; }
.path-body { text-align: left; }
.path-body .day { font-size: 0.72rem; color: var(--gold); font-weight: 650; }

/* Lesson player */
.lesson-shell { padding: 0 18px 24px; }
.progress-wrap { padding: 4px 0 14px; }
.progress-bar {
  height: 6px; background: var(--paper-2); border-radius: 99px; overflow: hidden;
}
.progress-bar > i {
  display: block; height: 100%; width: 0;
  background: var(--bordeaux);
  border-radius: 99px;
  transition: width 0.25s ease;
}
.progress-meta {
  display: flex; justify-content: space-between;
  font-size: 0.75rem; color: var(--ink-soft); margin-top: 6px;
}

.word-fr {
  font-family: var(--font-fr);
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 8px 0 4px;
}
.ipa { color: var(--ink-soft); font-size: 0.95rem; font-weight: 500; }
.zh { font-family: var(--font-zh); font-size: 1.15rem; margin-top: 8px; }
.example {
  margin-top: 16px; padding-top: 14px;
  border-top: 1px dashed var(--line);
}
.example .fr-line { font-family: var(--font-fr); font-size: 1.2rem; font-style: italic; }
.speak-btn {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  margin: 8px 0 4px;
  box-shadow: 0 8px 20px rgba(28,36,48,0.18);
}
.speak-btn.small { width: 40px; height: 40px; }
.speak-btn svg { width: 22px; height: 22px; }
.center-col { display: flex; flex-direction: column; align-items: flex-start; }

.grammar-card .rule { margin: 8px 0 14px; font-size: 0.98rem; }
.ex-mini {
  background: var(--paper);
  border-radius: 12px;
  padding: 10px 12px;
  margin-top: 8px;
}
.ex-mini .fr-line { font-family: var(--font-fr); font-size: 1.05rem; }

/* Exercise options */
.options { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }
.opt {
  text-align: left;
  background: var(--card);
  border: 1.5px solid var(--line);
  border-radius: 14px;
  padding: 13px 14px;
  font-size: 1rem;
  font-weight: 550;
}
.opt:hover { border-color: color-mix(in srgb, var(--bordeaux) 40%, var(--line)); }
.opt.selected { border-color: var(--ink); background: var(--paper-2); }
.opt.correct { border-color: var(--pine); background: var(--pine-light); }
.opt.wrong { border-color: var(--bordeaux); background: var(--wrong-bg); }
.opt .fr-opt { font-family: var(--font-fr); font-size: 1.15rem; }

.prompt { font-size: 1.05rem; font-weight: 600; }
.prompt-fr { font-family: var(--font-fr); font-size: 1.45rem; font-weight: 600; margin: 6px 0; }

.fill-line {
  font-family: var(--font-fr);
  font-size: 1.45rem;
  margin: 16px 0 10px;
}
.fill-line em {
  font-style: normal;
  border-bottom: 2px solid var(--bordeaux);
  min-width: 4ch;
  display: inline-block;
  text-align: center;
  color: var(--bordeaux);
}

input.answer {
  width: 100%;
  margin-top: 12px;
  border: 1.5px solid var(--line);
  background: var(--card);
  border-radius: 14px;
  padding: 14px;
  font-size: 1.15rem;
  font-family: var(--font-fr);
  outline: none;
}
input.answer:focus { border-color: var(--ink); }

.accent-bar { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.accent-bar button {
  min-width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--paper-2);
  font-family: var(--font-fr);
  font-size: 1.05rem;
  font-weight: 600;
}

.tiles { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tile {
  background: var(--card);
  border: 1.5px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  font-family: var(--font-fr);
  font-size: 1.1rem;
}
.built {
  min-height: 56px;
  border-radius: 14px;
  background: var(--paper-2);
  padding: 12px;
  font-family: var(--font-fr);
  font-size: 1.2rem;
  margin-top: 12px;
}

.feedback {
  margin-top: 12px;
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 0.95rem;
}
.feedback.ok { background: var(--pine-light); color: var(--pine); }
.feedback.bad { background: var(--wrong-bg); color: var(--bordeaux-dark); }
.feedback b { display: block; margin-bottom: 2px; }

/* Dialogue */
.bubble-row { display: flex; gap: 8px; margin: 12px 0; }
.bubble-row.right { flex-direction: row-reverse; }
.avatar {
  width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--paper-2);
  font-size: 0.75rem; font-weight: 700;
  flex-shrink: 0;
}
.bubble {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px 16px 16px 6px;
  padding: 10px 12px;
  max-width: 80%;
}
.bubble-row.right .bubble { border-radius: 16px 16px 6px 16px; background: #f3e6e7; }
.bubble .fr-line { font-family: var(--font-fr); font-size: 1.08rem; }
.bubble .zh-line { font-size: 0.82rem; color: var(--ink-soft); }
.bubble-row button.speak-mini {
  align-self: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
}

/* Result */
.result-hero { text-align: center; padding: 28px 10px 10px; }
.result-hero .big {
  font-family: var(--font-fr);
  font-size: 2.2rem;
  margin: 8px 0;
}
.score-ring { font-size: 3rem; font-family: var(--font-fr); color: var(--bordeaux); }

/* Review */
.due-badge {
  display: inline-flex; align-items: center;
  background: var(--bordeaux); color: var(--accent-fg);
  border-radius: 99px; padding: 2px 8px;
  font-size: 0.75rem; font-weight: 700; margin-left: 6px;
}
.srs-btns { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-top: 14px; }
.srs-btns button {
  border-radius: 12px; padding: 12px 8px; font-weight: 650; font-size: 0.88rem;
  border: 1.5px solid var(--line); background: var(--card);
}
.srs-btns .again { color: var(--bordeaux); }
.srs-btns .good { color: var(--pine); }
.srs-btns .easy { color: var(--gold); }

/* Settings */
.setting {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.setting:last-child { border-bottom: 0; }
.toggle {
  width: 46px; height: 28px; border-radius: 99px;
  background: #cfc6b6; position: relative;
}
.toggle on, .toggle.on { background: var(--pine); }
.toggle i {
  position: absolute; top: 3px; left: 3px;
  width: 22px; height: 22px; border-radius: 50%;
  background: #fff; transition: left 0.15s ease;
}
.toggle.on i { left: 21px; }
.range { width: 140px; }

/* Onboarding */
.onboard {
  min-height: 100dvh;
  max-width: 480px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: flex;
  flex-direction: column;
}
.logo-mark {
  width: 64px; height: 64px; border-radius: 18px;
  background: var(--bordeaux); color: var(--accent-fg);
  display: grid; place-items: center;
  font-family: var(--font-fr); font-size: 2rem; font-weight: 700;
  margin-bottom: 20px;
}
.onboard h1 {
  font-family: var(--font-fr);
  font-size: 2.4rem; line-height: 1.1; margin-bottom: 10px;
}
.onboard p.lead { color: var(--ink-soft); font-size: 1.05rem; margin-bottom: 24px; }
.feature { display: flex; gap: 10px; margin: 10px 0; align-items: flex-start; }
.feature .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gold); margin-top: 8px; flex-shrink: 0;
}
.spacer { flex: 1; }

.empty {
  text-align: center; padding: 48px 16px; color: var(--ink-soft);
}
.empty .glyph { font-family: var(--font-fr); font-size: 2.4rem; color: var(--gold); }

.hide-zh .zh, .hide-zh .zh-line { display: none; }

.toast {
  position: fixed; left: 50%; bottom: calc(var(--nav-h) + 16px);
  transform: translateX(-50%);
  background: var(--ink); color: var(--paper);
  padding: 8px 14px; border-radius: 99px;
  font-size: 0.85rem; z-index: 50;
  animation: rise 0.2s ease;
}

@media (min-width: 520px) {
  body { padding: 12px 0; }
  #app, .onboard, .nav {
    border-radius: 24px;
  }
  #app, .onboard {
    box-shadow: 0 20px 60px rgba(28,36,48,0.08);
    background: color-mix(in srgb, var(--paper) 70%, transparent);
    min-height: calc(100dvh - 24px);
  }
  .nav { bottom: 12px; width: 480px; border-radius: 0 0 24px 24px; }
}


.level-progress { display: grid; gap: 8px; margin: 8px 0 20px; }
.lp-row { display: grid; grid-template-columns: 28px 1fr auto; gap: 8px; align-items: center; font-size: 0.82rem; color: var(--ink-soft); }
.lp-row b, .lp-row span:first-child { font-weight: 700; color: var(--ink); }
.lp-bar { height: 8px; background: color-mix(in srgb, var(--ink) 8%, transparent); border-radius: 99px; overflow: hidden; }
.lp-bar i { display: block; height: 100%; background: var(--gold); border-radius: 99px; }
.lp-row em { font-style: normal; font-variant-numeric: tabular-nums; min-width: 4.5em; text-align: right; }

.level-block { margin: 0 0 14px; }
.level-h {
  width: 100%; display: flex; align-items: center; gap: 10px;
  background: var(--paper); border: 1px solid color-mix(in srgb, var(--ink) 8%, transparent);
  border-radius: 14px; padding: 12px 14px; cursor: pointer; font: inherit; color: inherit;
}
.level-h b { font-family: var(--font-fr); font-size: 1.15rem; }
.level-h span { color: var(--ink-soft); font-size: 0.85rem; }
.level-h i { margin-left: auto; font-style: normal; color: var(--ink-soft); }
.level-block .path { margin-top: 10px; }

.lex-filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 12px; }
.chip {
  border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  background: var(--paper); color: var(--ink);
  border-radius: 99px; padding: 6px 12px; font: inherit; font-size: 0.88rem; cursor: pointer;
}
.chip.on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.lex-search { width: 100%; margin: 0 0 4px; }
.word-list { display: grid; gap: 8px; margin: 10px 0 16px; }
.word-row {
  width: 100%; background: var(--paper);
  border: 1px solid color-mix(in srgb, var(--ink) 8%, transparent);
  border-radius: 14px;
  display: flex; align-items: center; gap: 2px; padding-right: 4px;
}
.word-row-main {
  flex: 1; min-width: 0; text-align: left; background: transparent; border: 0;
  padding: 10px 8px 10px 12px; cursor: pointer; font: inherit; color: inherit;
  display: flex; justify-content: space-between; gap: 10px; align-items: baseline;
}
.word-row b { font-family: var(--font-fr); font-size: 1.15rem; display: block; }
.word-row em { font-style: normal; color: var(--ink-soft); font-size: 0.9rem; text-align: right; }
.word-row.learned { opacity: 0.72; }
.word-row .lex-speak { flex-shrink: 0; width: 40px; height: 40px; }
.credits a { color: inherit; text-underline-offset: 3px; }

.nav button { font-size: 0.72rem; }

/* Alphabet lesson */
.alpha-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin: 12px 0 20px;
}
.alpha-key,
.accent-key {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 10px 4px 8px;
  text-align: center;
  cursor: pointer;
  font-family: var(--font-fr);
  color: var(--ink);
  transition: border-color 0.15s, background 0.15s;
}
.alpha-key:active,
.alpha-key:focus,
.accent-key:active,
.accent-key:focus {
  outline: none;
  border-color: var(--bordeaux);
  background: #faf4f0;
}
.alpha-key .ch,
.accent-key .ch {
  font-size: 1.35rem;
  font-weight: 600;
  display: block;
  line-height: 1.2;
}
.alpha-key .nm,
.accent-key .nm {
  display: block;
  font-size: 0.68rem;
  color: var(--ink-soft);
  margin-top: 2px;
  font-family: var(--font-fr);
}
.accent-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin: 12px 0 8px;
}
.accent-key { padding: 10px 8px; text-align: left; }
.accent-key .zh-mini {
  display: block;
  font-size: 0.7rem;
  color: var(--ink-soft);
  font-family: var(--font-zh);
  margin-top: 2px;
}

/* Ranks */
.rank-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 4px 0 14px;
}
.rank-pill {
  display: inline-block;
  background: var(--bordeaux);
  color: var(--accent-fg);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 3px 10px;
  border-radius: 999px;
}
.rank-card { margin-bottom: 16px; }
.rank-card .rank-title {
  font-family: var(--font-fr);
  font-size: 2rem;
  line-height: 1.15;
  margin: 2px 0 0;
}
.rank-card .rank-fr {
  font-family: var(--font-fr);
  font-style: italic;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.rank-ladder {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  margin: 14px 0 10px;
  font-size: 0.7rem;
  text-align: center;
  color: var(--ink-soft);
}
.rank-ladder .on {
  color: var(--bordeaux);
  font-weight: 700;
}

.persist-banner {
  background: #f8e6e4;
  color: #6b2a2a;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.88rem;
  margin: 0 0 14px;
}
.onboard .persist-banner { margin: 0 0 16px; }
.persist-hint { margin-top: 8px; font-size: 0.82rem; }

#me-name { margin-top: 10px; width: 100%; }

/* Theme color picker */
.theme-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 12px 0 8px;
}
.theme-swatch {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 1px solid var(--line);
  overflow: hidden;
  flex-shrink: 0;
  display: block;
  cursor: pointer;
}
.theme-swatch input {
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  border: 0;
  padding: 0;
}
.theme-hex {
  flex: 1;
  font-family: var(--font-ui);
  letter-spacing: 0.04em;
  text-transform: lowercase;
}
.theme-rgb label {
  display: grid;
  grid-template-columns: 22px 1fr 36px;
  align-items: center;
  gap: 10px;
  margin: 8px 0;
  font-size: 0.85rem;
  font-weight: 600;
}
.theme-range { width: 100%; }
.theme-rgb [data-rgb-val] {
  text-align: right;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}
.rgb-letter { letter-spacing: 0.04em; }
.rgb-letter.r { color: #c43c3c; }
.rgb-letter.g { color: #2c7a4e; }
.rgb-letter.b { color: #2a5da8; }
.theme-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 4px;
}
.theme-preset {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid rgba(28, 36, 48, 0.12);
  box-shadow: inset 0 0 0 2px var(--card);
}
.theme-preset.on {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 2px var(--card), 0 0 0 2px var(--ink);
}