/* ═══════════════════════════════════════════════════════════════
   Judo Throws — design system
   Dark = sumi ink (墨), Light = washi paper (和紙), accent = shu
   vermillion (朱). Zero external assets: patterns are inline SVG.
═══════════════════════════════════════════════════════════════ */

:root {
  /* sumi-ink dark (default) */
  --bg: #0c0e13;
  --bg-glow-1: #1a1f2b;
  --bg-glow-2: #211724;
  --panel: #151924;
  --panel-2: #1b2130;
  --panel-3: #242b3d;
  --text: #eceef2;
  --muted: #9aa4b5;
  --border: #262d3d;
  --border-2: #333c52;

  --accent: #e5484d;
  --accent-2: #b8353b;
  --accent-text: #ff7d84; /* accent used AS text on panels — passes AA */
  --accent-grad-top: #d63c42; /* white text on this passes AA */
  --accent-ink: #ffffff;
  --accent-soft: rgba(229, 72, 77, 0.12);
  --accent-glow: rgba(229, 72, 77, 0.35);

  --success: #22c55e;
  --success-ink: #b9f1cc;
  --success-soft: rgba(34, 197, 94, 0.12);
  --warning: #f59e0b;
  --warning-ink: #ffe1ae;
  --warning-soft: rgba(245, 158, 11, 0.14);
  --danger: #ef4444;
  --danger-ink: #ffd4d4;
  --danger-soft: rgba(239, 68, 68, 0.12);

  --belt-yellow: #eab308;
  --belt-orange: #f97316;
  --belt-green: #22c55e;
  --belt-blue: #3b82f6;
  --belt-brown: #a16207;
  --belt-preserved: #94a3b8;

  --card-face: #ffffff;
  --pattern-ink: rgba(255, 255, 255, 0.022);

  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);

  --radius: 16px;
  --radius-sm: 10px;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", Meiryo, sans-serif;
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino,
    Georgia, "Hiragino Mincho ProN", "Yu Mincho", serif;

  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="light"] {
  --bg: #f3eee4;
  --bg-glow-1: #ece4d2;
  --bg-glow-2: #efe2da;
  --panel: #fdfbf5;
  --panel-2: #f6f2e8;
  --panel-3: #ece6d7;
  --text: #23262e;
  --muted: #5f6773;
  --border: #e0d8c6;
  --border-2: #cdc3ac;

  --accent: #c2403c;
  --accent-2: #a53430;
  --accent-text: #a2322e;
  --accent-grad-top: #b83a36;
  --accent-soft: rgba(194, 64, 60, 0.10);
  --accent-glow: rgba(194, 64, 60, 0.25);

  --success-ink: #14683a;
  --warning-ink: #7c5205;
  --danger-ink: #9f2626;

  --belt-yellow: #a87b03;
  --belt-preserved: #64748b;

  --card-face: #ffffff;
  --pattern-ink: rgba(35, 38, 46, 0.035);

  --shadow-lg: 0 20px 60px rgba(80, 65, 40, 0.18);
  --shadow-md: 0 8px 24px rgba(80, 65, 40, 0.12);
  --shadow-sm: 0 2px 8px rgba(80, 65, 40, 0.08);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  /* a study-card swipe with downward drift must not become Android
     pull-to-refresh and reload away the in-memory session */
  overscroll-behavior-y: contain;
}

body {
  background:
    radial-gradient(1200px 600px at 90% -20%, var(--bg-glow-1) 0%, transparent 60%),
    radial-gradient(900px 500px at -10% 30%, var(--bg-glow-2) 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Seigaiha (青海波) wave pattern, drawn inline — no network request */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='60' viewBox='0 0 120 60'%3E%3Cg fill='none' stroke='%23888' stroke-width='1.6'%3E%3Ccircle cx='0' cy='60' r='54'/%3E%3Ccircle cx='0' cy='60' r='40'/%3E%3Ccircle cx='0' cy='60' r='26'/%3E%3Ccircle cx='0' cy='60' r='12'/%3E%3Ccircle cx='120' cy='60' r='54'/%3E%3Ccircle cx='120' cy='60' r='40'/%3E%3Ccircle cx='120' cy='60' r='26'/%3E%3Ccircle cx='120' cy='60' r='12'/%3E%3Ccircle cx='60' cy='30' r='54'/%3E%3Ccircle cx='60' cy='30' r='40'/%3E%3Ccircle cx='60' cy='30' r='26'/%3E%3Ccircle cx='60' cy='30' r='12'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 120px 60px;
  opacity: 0.045;
}
[data-theme="light"] body::before { opacity: 0.055; }

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 20px 64px;
}

/* ═══════════ Header ═══════════ */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  padding: 0;
  font: inherit;
  text-align: left;
}

/* hanko (name-seal) style stamp */
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid;
  place-items: center;
  font-weight: 900;
  color: #fff;
  font-size: 24px;
  font-family: var(--font-display);
  box-shadow: 0 6px 20px var(--accent-glow), inset 0 0 0 2px rgba(255, 255, 255, 0.18);
  transition: transform 0.35s var(--ease-spring);
}
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.05); }

.brand-title {
  display: block;
  font-size: 19px;
  letter-spacing: 0.2px;
  font-family: var(--font-display);
  font-weight: 700;
}
.subtitle { color: var(--muted); font-size: 12px; margin-top: 2px; }

.header-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* Nav tabs */
.nav-tabs {
  display: flex;
  gap: 4px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
  box-shadow: var(--shadow-sm);
}
.nav-tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  font-weight: 650;
  padding: 8px 14px;
  border-radius: 9px;
  cursor: pointer;
  transition: all 0.2s var(--ease-out);
  position: relative;
}
.nav-tab:hover { color: var(--text); }
.nav-tab[aria-current="page"] {
  background: var(--accent-grad-top, var(--accent-2));
  color: var(--accent-ink);
  box-shadow: 0 3px 12px var(--accent-glow);
}

/* ═══════════ Buttons ═══════════ */

.btn {
  appearance: none;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.18s var(--ease-out);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
}
.btn:hover { border-color: var(--border-2); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }
.btn.primary {
  background: linear-gradient(180deg, var(--accent-grad-top, var(--accent-2)), var(--accent-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 18px var(--accent-glow);
}
.btn.primary:hover { filter: brightness(1.07); box-shadow: 0 8px 24px var(--accent-glow); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger-ink); border-color: rgba(239, 68, 68, 0.5); }
.btn.danger:hover { background: var(--danger-soft); }
.btn.small { padding: 6px 10px; font-size: 12px; min-height: 32px; }
.btn.icon-btn { padding: 8px 11px; }

:where(button, a, select, input, [tabindex]:not([tabindex="-1"])):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ═══════════ Views & transitions ═══════════ */

.view { animation: viewIn 0.4s var(--ease-out); }
@keyframes viewIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ═══════════ Cards / panels ═══════════ */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
.panel { padding: 16px 18px; }
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 10px;
}
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* ═══════════ Hero ═══════════ */

.hero {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 22px;
  overflow: hidden;
  position: relative;
  margin-bottom: 18px;
  background:
    radial-gradient(600px 300px at 100% 0%, var(--accent-soft) 0%, transparent 60%),
    var(--panel);
}
.hero-vertical {
  position: absolute;
  top: 18px;
  right: 16px;
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 10px;
  color: var(--muted);
  opacity: 0.22;
  user-select: none;
  pointer-events: none;
}
.hero-photo {
  width: 200px;
  height: 240px;
  border-radius: 14px;
  overflow: hidden;
  position: relative;
  background: var(--panel-3);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.05) saturate(0.9);
  display: block;
}
.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.45) 100%);
  pointer-events: none;
}
.hero-text { display: flex; flex-direction: column; justify-content: center; }
.hero-eyebrow {
  color: var(--accent-text);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.hero-name {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0.3px;
  margin: 0;
  font-family: var(--font-display);
}
.hero-name-jp { color: var(--muted); font-weight: 500; font-size: 18px; margin-left: 8px; }
.hero-dates { color: var(--muted); font-size: 13px; margin-top: 2px; }
.hero blockquote {
  margin: 14px 0 0;
  padding: 12px 16px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 10px 10px 0;
  font-size: 14px;
  line-height: 1.55;
  font-style: italic;
  font-family: var(--font-display);
}
.hero blockquote cite {
  display: block;
  margin-top: 6px;
  font-style: normal;
  color: var(--muted);
  font-size: 12px;
  font-family: var(--font-body);
}
.hero-tags { display: flex; gap: 6px; margin-top: 12px; flex-wrap: wrap; }
.hero-tag {
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--panel-3);
  border: 1px solid var(--border-2);
  color: var(--muted);
}

/* ═══════════ Stats grid ═══════════ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}
.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  animation: viewIn 0.45s var(--ease-out) backwards;
}
.stat-card:nth-child(1) { animation-delay: 0.03s; }
.stat-card:nth-child(2) { animation-delay: 0.08s; }
.stat-card:nth-child(3) { animation-delay: 0.13s; }
.stat-card:nth-child(4) { animation-delay: 0.18s; }
.stat-label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; }
.stat-value { font-size: 24px; font-weight: 800; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat-sub { color: var(--muted); font-size: 12px; margin-top: 2px; }
.stat-card.due-highlight { border-color: var(--accent); background: linear-gradient(180deg, var(--accent-soft), var(--panel)); }

/* ═══════════ Setup panel ═══════════ */

.setup-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-md);
}
.setup-row { display: grid; gap: 18px 22px; grid-template-columns: 1fr 1.2fr; }
.setup-title {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.4px;
  margin-bottom: 8px;
}
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 7px 12px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  user-select: none;
  transition: all 0.18s var(--ease-out);
}
.chip:hover { border-color: var(--border-2); transform: translateY(-1px); }
.chip[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
}
.chip .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); flex: none; }
.chip .count { color: var(--muted); }

[data-theme="light"] .dot { box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.18); }

.dot[data-belt="Yellow"]    { background: var(--belt-yellow); }
.dot[data-belt="Orange"]    { background: var(--belt-orange); }
.dot[data-belt="Green"]     { background: var(--belt-green); }
.dot[data-belt="Blue"]      { background: var(--belt-blue); }
.dot[data-belt="Brown"]     { background: var(--belt-brown); }
.dot[data-belt="Preserved"] { background: var(--belt-preserved); }

.mode-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.mode-card {
  appearance: none;
  cursor: pointer;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  padding: 12px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 3px;
  font: inherit;
  transition: all 0.18s var(--ease-out);
}
.mode-card:hover { border-color: var(--border-2); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.mode-card[aria-checked="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: 0 6px 18px var(--accent-glow);
}
.mode-icon { font-size: 20px; line-height: 1.2; }
.mode-title { font-size: 14px; font-weight: 700; }
.mode-desc { font-size: 11.5px; color: var(--muted); line-height: 1.35; }

.setup-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.setup-actions .grow { flex: 1; }
.length-control { display: flex; align-items: center; gap: 8px; }
.length-control label { color: var(--muted); font-size: 12px; }
select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

/* ═══════════ Home two-column ═══════════ */

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.history-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  border: 1px solid var(--border);
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.18s var(--ease-out);
  width: 100%;
  text-align: left;
  color: inherit;
  font: inherit;
}
.history-row:hover { border-color: var(--border-2); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.history-score {
  font-weight: 800;
  font-size: 15px;
  min-width: 62px;
  padding: 6px 10px;
  border-radius: 8px;
  text-align: center;
  background: var(--panel-3);
  border: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.history-score.good { color: var(--success-ink); border-color: rgba(34, 197, 94, 0.4); background: var(--success-soft); }
.history-score.mid  { color: var(--warning-ink); border-color: rgba(245, 158, 11, 0.4); background: var(--warning-soft); }
.history-score.bad  { color: var(--danger-ink);  border-color: rgba(239, 68, 68, 0.4);  background: var(--danger-soft); }
.history-meta { font-size: 13px; }
.history-meta .when { color: var(--muted); font-size: 11px; }
.history-actions { color: var(--muted); font-size: 18px; }
.empty-note { color: var(--muted); font-size: 13px; padding: 14px 4px; text-align: center; }

.focus-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  border: 1px solid var(--border);
  margin-bottom: 6px;
}
.focus-row .name { font-weight: 600; }
.focus-row .english { color: var(--muted); font-size: 12px; }
.acc-pill {
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: var(--panel-3);
  border: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.acc-pill.bad  { color: var(--danger-ink);  border-color: rgba(239, 68, 68, 0.4);  background: var(--danger-soft); }
.acc-pill.mid  { color: var(--warning-ink); border-color: rgba(245, 158, 11, 0.4); background: var(--warning-soft); }
.acc-pill.good { color: var(--success-ink); border-color: rgba(34, 197, 94, 0.4);  background: var(--success-soft); }

/* ═══════════ Study (flashcards) ═══════════ */

.study-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.study-toolbar .grow { flex: 1; }
.search-box {
  position: relative;
  min-width: 200px;
  flex: 1;
  max-width: 340px;
}
.search-box input {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 9px 14px 9px 34px;
  font: inherit;
  font-size: 13px;
  transition: border-color 0.2s ease;
}
.search-box input:focus { border-color: var(--accent); }
.search-box input:focus:not(:focus-visible) { outline: none; }
.search-box::before {
  content: "🔍";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  opacity: 0.6;
  pointer-events: none;
}

.study-stage {
  display: grid;
  place-items: center;
  perspective: 1400px;
  margin-bottom: 14px;
  touch-action: pan-y;
}

.flashcard {
  position: relative;
  width: min(560px, 100%);
  height: 430px;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform 0.55s var(--ease-spring);
  border: 0;
  background: none;
  padding: 0;
  font: inherit;
  color: inherit;
  border-radius: var(--radius);
}
.flashcard.flipped { transform: rotateY(180deg); }
.flashcard.slide-left  { animation: slideLeft 0.3s var(--ease-out); }
.flashcard.slide-right { animation: slideRight 0.3s var(--ease-out); }
@keyframes slideLeft  { from { opacity: 0; transform: translateX(40px); }  to { opacity: 1; transform: none; } }
@keyframes slideRight { from { opacity: 0; transform: translateX(-40px); } to { opacity: 1; transform: none; } }

.flashcard .face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 22px;
  overflow: hidden;
}
.flashcard .face.back { transform: rotateY(180deg); }

.face .face-hint {
  position: absolute;
  bottom: 12px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.face .belt-badge { position: absolute; top: 12px; left: 12px; }
.face .card-count {
  position: absolute;
  top: 12px;
  right: 12px;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  background: var(--panel-2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 999px;
}
.face img.throw-gif,
.face canvas.throw-gif {
  width: min(100%, 420px);
  height: 290px;
  object-fit: contain;
  border-radius: 10px;
  background: var(--card-face);
  padding: 10px;
  box-shadow: var(--shadow-sm);
}
.face .front-word {
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 44px);
  font-weight: 800;
  text-align: center;
  line-height: 1.2;
}
.face .front-word .kanji-sub {
  display: block;
  font-size: 0.55em;
  color: var(--muted);
  font-weight: 500;
  margin-top: 8px;
}
.back .back-name {
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 36px);
  font-weight: 800;
  margin: 0;
  text-align: center;
}
.back .back-kanji { font-size: 20px; color: var(--accent-text); font-family: var(--font-display); }
.back .back-english { font-size: 16px; color: var(--text); font-style: italic; }
.back .back-group { color: var(--muted); font-size: 13px; }
.back img.throw-gif,
.back canvas.throw-gif { height: 170px; }
.back .back-stats {
  display: flex;
  gap: 8px;
  margin-top: 4px;
  flex-wrap: wrap;
  justify-content: center;
}
.back .back-stats .pill { font-size: 11px; }

.study-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.study-mark-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}
.btn.know { color: var(--success-ink); border-color: rgba(34, 197, 94, 0.45); }
.btn.know:hover { background: var(--success-soft); }
.btn.review { color: var(--warning-ink); border-color: rgba(245, 158, 11, 0.45); }
.btn.review:hover { background: var(--warning-soft); }
.btn.know[aria-pressed="true"] { background: var(--success-soft); border-color: var(--success); }
.btn.review[aria-pressed="true"] { background: var(--warning-soft); border-color: var(--warning); }

.study-progress {
  height: 5px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  overflow: hidden;
  margin: 0 auto 14px;
  max-width: 560px;
}
.study-progress .fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #ff8087);
  transition: width 0.3s var(--ease-out);
}
.study-empty { text-align: center; padding: 60px 20px; }

/* ═══════════ Library ═══════════ */

.library-groups { display: flex; flex-direction: column; gap: 16px; }
.library-group-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 4px 0 10px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
}
.library-group-title .dot { width: 12px; height: 12px; border-radius: 50%; }
.library-group-title .sub { color: var(--muted); font-size: 12px; font-weight: 500; font-family: var(--font-body); }
.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 8px;
}
.throw-tile {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 13px;
  cursor: pointer;
  text-align: left;
  color: inherit;
  font: inherit;
  transition: all 0.18s var(--ease-out);
}
.throw-tile:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.throw-tile .t-name { font-weight: 700; font-size: 14px; }
.throw-tile .t-kanji { color: var(--accent-text); font-size: 12px; margin-left: 6px; font-family: var(--font-display); }
.throw-tile .t-english { color: var(--muted); font-size: 12px; margin-top: 1px; }
.throw-tile .t-badges { display: flex; flex-direction: column; gap: 4px; align-items: flex-end; }

/* ═══════════ Quiz ═══════════ */

.quiz-toolbar {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.progress-wrap { display: flex; flex-direction: column; gap: 8px; }
.progress {
  height: 6px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #ff8087);
  background-size: 200% 100%;
  animation: shimmer 2.4s linear infinite;
  transition: width 0.35s var(--ease-out);
}
@keyframes shimmer {
  from { background-position: 0% 0; }
  to { background-position: 200% 0; }
}
.quiz-meta { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.pill {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 11px;
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.pill b { color: var(--text); }
.pill.streak-hot {
  border-color: var(--warning);
  background: var(--warning-soft);
  animation: hotPulse 1.2s ease-in-out infinite;
}
@keyframes hotPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

.quiz-card { overflow: hidden; }
.image-wrap {
  background:
    repeating-linear-gradient(45deg, var(--panel-2) 0 12px, var(--panel) 12px 24px);
  display: grid;
  place-items: center;
  min-height: 340px;
  padding: 20px;
  position: relative;
}
/* every animation sits in the same-size white panel, scaled to fit —
   native GIF sizes vary wildly (140px to 345px wide) and would otherwise
   render as mismatched postage stamps */
.image-wrap img,
.image-wrap canvas.gif-frame {
  width: min(100%, 440px);
  height: 340px;
  object-fit: contain;
  border-radius: 10px;
  background: var(--card-face);
  padding: 10px;
  box-shadow: var(--shadow-md);
  animation: viewIn 0.3s var(--ease-out);
}
.image-wrap .img-loading,
.image-wrap .img-error {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
  padding: 20px;
}
.image-wrap.loading .img-loading { display: grid; }
.image-wrap.error .img-error { display: grid; }
.image-wrap.loading img,
.image-wrap.error img { visibility: hidden; }

.spinner {
  width: 26px;
  height: 26px;
  border: 3px solid var(--border-2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 10px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.belt-badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: rgba(10, 10, 14, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  padding: 5px 10px;
  border-radius: 999px;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  z-index: 2;
}
.image-wrap .belt-badge { position: absolute; top: 14px; left: 14px; }
.belt-badge .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

.q-body { padding: 20px 22px 22px; }
.question { font-size: 20px; font-weight: 700; margin: 0 0 14px; font-family: var(--font-display); }
.question .hint { display: block; color: var(--muted); font-size: 13px; font-weight: 500; margin-top: 4px; font-family: var(--font-body); }
.options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.option {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  text-align: left;
  padding: 14px;
  border-radius: 12px;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s var(--ease-out);
  min-height: 52px;
}
.option:hover:not([disabled]) { border-color: var(--border-2); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.option .kbd { flex: none; }
.option.correct {
  background: var(--success-soft);
  border-color: var(--success);
  color: var(--success-ink);
  animation: popCorrect 0.35s var(--ease-spring);
}
.option.wrong {
  background: var(--danger-soft);
  border-color: var(--danger);
  color: var(--danger-ink);
  animation: shake 0.4s ease;
}
.option[disabled] { cursor: default; }
@keyframes popCorrect {
  0% { transform: scale(1); }
  45% { transform: scale(1.035); }
  100% { transform: scale(1); }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-3px); }
}

kbd, .kbd {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 2px 7px;
  min-width: 22px;
  text-align: center;
  display: inline-block;
}

.feedback {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  display: none;
}
.feedback.show { display: block; animation: viewIn 0.25s var(--ease-out); }
.feedback.ok { background: var(--success-soft); color: var(--success-ink); border: 1px solid rgba(34, 197, 94, 0.4); }
.feedback.no { background: var(--danger-soft); color: var(--danger-ink); border: 1px solid rgba(239, 68, 68, 0.4); }
.feedback .fb-detail { color: var(--muted); font-size: 12px; margin-top: 4px; }

.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.controls .left { color: var(--muted); font-size: 12px; }

/* ═══════════ Summary ═══════════ */

.summary-card { padding: 28px; text-align: center; position: relative; overflow: hidden; }
.summary-card h2 { font-size: 28px; margin: 0 0 6px; font-family: var(--font-display); }
.summary-card > p { color: var(--muted); margin: 0 0 14px; }
.score-big {
  font-size: 56px;
  font-weight: 900;
  margin: 14px 0;
  font-family: var(--font-display);
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: scorePop 0.6s var(--ease-spring);
  font-variant-numeric: tabular-nums;
}
@keyframes scorePop {
  0% { transform: scale(0.6); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
.summary-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 18px 0 22px;
  text-align: left;
}
.metric {
  background: var(--panel-2);
  border: 1px solid var(--border);
  padding: 12px 14px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.metric span { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; }
.metric b { font-size: 18px; font-weight: 800; font-variant-numeric: tabular-nums; }
.summary-buttons { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }

#wrongPanel { margin-top: 14px; }
.wrong-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px;
  align-items: center;
  padding: 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}
.wrong-row .thumb {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  object-fit: contain;
  background: var(--card-face);
  padding: 4px;
}
.wrong-row .thumb-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  background: var(--panel-3);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 11px;
}
.wrong-row .name { font-weight: 700; }
.wrong-row .what-i-said { margin-top: 4px; font-size: 12px; color: var(--muted); }
.wrong-row .what-i-said b { color: var(--danger-ink); }

/* ═══════════ Modals ═══════════ */

.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 20px; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-panel {
  position: relative;
  width: min(720px, 100%);
  max-height: 86vh;
  max-height: 86dvh; /* iOS Safari: 86vh overflows behind the collapsed URL bar */
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: modalIn 0.3s var(--ease-spring);
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to { opacity: 1; transform: none; }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 { margin: 0; font-size: 16px; font-family: var(--font-display); }
.modal-body { padding: 14px 18px 18px; overflow: auto; overscroll-behavior: contain; }

.history-detail-meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 14px; }
.history-detail-meta .metric { padding: 10px; }

.qa-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}
.qa-row .ind {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 800;
}
.qa-row .ind.ok { color: var(--success-ink); background: var(--success-soft); border: 1px solid rgba(34, 197, 94, 0.4); }
.qa-row .ind.no { color: var(--danger-ink); background: var(--danger-soft); border: 1px solid rgba(239, 68, 68, 0.4); }
.qa-row .qa-name { font-weight: 700; font-size: 13px; }
.qa-row .qa-sub { color: var(--muted); font-size: 11px; }
.qa-row .qa-pill {
  color: var(--muted);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-3);
}

/* Throw detail modal */
.detail-hero {
  display: grid;
  place-items: center;
  background: repeating-linear-gradient(45deg, var(--panel-2) 0 12px, var(--panel) 12px 24px);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 14px;
  position: relative;
  min-height: 180px;
}
.detail-hero .belt-badge { position: absolute; top: 12px; left: 12px; }
.detail-hero img,
.detail-hero canvas { width: min(100%, 400px); height: 280px; object-fit: contain; border-radius: 8px; background: var(--card-face); padding: 8px; }
.detail-names { text-align: center; margin-bottom: 14px; }
.detail-names .d-name { font-family: var(--font-display); font-size: 26px; font-weight: 800; }
.detail-names .d-kanji { color: var(--accent-text); font-size: 17px; font-family: var(--font-display); margin-top: 2px; }
.detail-names .d-english { color: var(--muted); font-style: italic; margin-top: 2px; }
.detail-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }

/* Shortcuts modal */
.shortcut-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 20px; }
.shortcut-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.shortcut-row .keys { display: flex; gap: 4px; }

/* ═══════════ Toast ═══════════ */

.toast {
  position: fixed;
  bottom: calc(22px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--panel-3);
  color: var(--text);
  border: 1px solid var(--border-2);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  opacity: 0;
  transition: all 0.3s var(--ease-spring);
  pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ═══════════ Confetti ═══════════ */

#confettiCanvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 300;
}

/* ═══════════ Footer ═══════════ */

.site-footer {
  margin-top: 26px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }

/* ═══════════ Visually hidden (a11y) ═══════════ */

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ═══════════ Responsive ═══════════ */

@media (max-width: 860px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .summary-metrics { grid-template-columns: repeat(2, 1fr); }
  .history-detail-meta { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .setup-row { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; padding: 18px; }
  .hero-photo { width: 100%; max-width: 260px; height: 300px; margin: 0 auto; }
  .hero-vertical { display: none; }
  .site-header { justify-content: center; }
}

@media (max-width: 560px) {
  .app { padding: 14px 12px 48px; }
  .options { grid-template-columns: 1fr; }
  .image-wrap { min-height: 240px; padding: 14px; }
  .image-wrap img,
  .image-wrap canvas.gif-frame { height: min(280px, 36vh); }
  .brand-title { font-size: 17px; }
  .quiz-toolbar { grid-template-columns: 1fr; }
  .quiz-meta { justify-content: flex-start; }
  .flashcard { height: 380px; }
  .mode-grid { grid-template-columns: 1fr 1fr; }
  .detail-stats { grid-template-columns: 1fr; }
  .shortcut-grid { grid-template-columns: 1fr; }
  .nav-tabs { width: 100%; justify-content: center; }
}

/* ═══════════ Reduced motion ═══════════ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .flashcard { transition: none; }
}

/* ═══════════ Touch ergonomics ═══════════ */

button, .btn, .option, .chip, .nav-tab, .mode-card, .flashcard,
.history-row, .focus-row, .wrong-row, .throw-tile {
  touch-action: manipulation; /* kills the 300ms/double-tap zoom on rapid taps */
  -webkit-tap-highlight-color: transparent; /* :active states already give feedback */
}

@media (pointer: coarse), (hover: none) {
  .btn { min-height: 44px; }
  .chip { min-height: 44px; padding: 10px 14px; }
  .btn.small { min-height: 44px; }
  .btn.icon-btn { min-width: 44px; min-height: 44px; }
  .chip-row { gap: 8px; }
  .nav-tab { min-height: 44px; }
  .option { min-height: 56px; }
  /* iOS Safari zooms into (and stays zoomed on) any control under 16px */
  .search-box input, select { font-size: 16px; }
}

/* landscape phones: width breakpoints never fire, but the viewport is
   only ~360-420px tall — shrink the tall fixed-height pieces to fit */
@media (max-height: 560px) {
  .flashcard { height: min(430px, calc(100vh - 150px)); }
  .face img.throw-gif, .face canvas.throw-gif { height: min(240px, 46vh); }
  .back img.throw-gif, .back canvas.throw-gif { height: min(150px, 26vh); }
  .image-wrap { min-height: 200px; }
  .image-wrap img,
  .image-wrap canvas.gif-frame { height: min(280px, 52vh); }
}

/* ═══════════ Late additions ═══════════ */

.panel-title-h3 {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.3px;
  font-family: var(--font-display);
}

button.focus-row, button.wrong-row {
  width: 100%;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transition: all 0.18s var(--ease-out);
}
button.focus-row:hover, button.wrong-row:hover {
  border-color: var(--border-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.media-controls {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 6px;
  z-index: 2;
}

.feedback-inner { display: flex; gap: 12px; align-items: center; }
.fb-thumb {
  width: 88px;
  height: 88px;
  object-fit: contain;
  background: var(--card-face);
  border-radius: 8px;
  padding: 3px;
  flex: none;
}

/* ═══════════ Motion polish ═══════════ */

.stat-card { transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out); }
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* staggered entrance for library tiles (capped — later tiles appear together) */
.library-grid .throw-tile { animation: viewIn 0.35s var(--ease-out) backwards; }
.library-grid .throw-tile:nth-child(1) { animation-delay: 0.02s; }
.library-grid .throw-tile:nth-child(2) { animation-delay: 0.05s; }
.library-grid .throw-tile:nth-child(3) { animation-delay: 0.08s; }
.library-grid .throw-tile:nth-child(4) { animation-delay: 0.11s; }
.library-grid .throw-tile:nth-child(5) { animation-delay: 0.14s; }
.library-grid .throw-tile:nth-child(6) { animation-delay: 0.17s; }

/* gentle nudge toward the flip affordance */
.face .face-hint { animation: hintPulse 2.6s ease-in-out infinite; }
@keyframes hintPulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}

/* score gradient shimmer on the summary */
.score-big {
  background-size: 200% 100%;
  animation: scorePop 0.6s var(--ease-spring), scoreShimmer 3s linear 0.6s infinite;
}
@keyframes scoreShimmer {
  from { background-position: 0% 0; }
  to { background-position: 200% 0; }
}

/* toast entrance already springs; give marks a tick */
.btn.know:active, .btn.review:active { transform: scale(0.94); }

/* ═══════════ Print ═══════════ */

@media print {
  body { background: #fff !important; color: #000 !important; }
  body::before { display: none !important; }
  .site-header .header-actions, .nav-tabs, .setup-panel, .study-toolbar,
  .study-controls, .study-mark-row, .site-footer .btn, .btn { display: none !important; }
  .card, .stat-card, .throw-tile, .panel {
    box-shadow: none !important;
    border-color: #bbb !important;
    background: #fff !important;
    color: #000 !important;
  }
  .throw-tile .t-english, .muted { color: #444 !important; }
}

/* ═══════════ Image fallback ═══════════ */

.img-fallback {
  display: grid;
  place-items: center;
  min-height: 120px;
  padding: 16px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  background: var(--panel-2);
  border: 1px dashed var(--border-2);
  border-radius: 10px;
  max-width: 100%;
}

/* ═══════════ Type-It mode ═══════════ */

.type-area {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: stretch;
}
.type-area input {
  flex: 1;
  min-width: 200px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font: inherit;
  font-size: 16px; /* ≥16px prevents iOS zoom-on-focus */
  transition: border-color 0.2s ease;
}
.type-area input:focus { border-color: var(--accent); }
.type-area input:focus:not(:focus-visible) { outline: none; }
.type-area input:disabled { opacity: 0.6; }
.type-area input.shake { animation: shake 0.4s ease; border-color: var(--danger); }

/* ═══════════ Hints ═══════════ */

.hint-line {
  margin: 12px 0 0;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--warning-soft);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--warning-ink);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2.5px;
  font-variant-ligatures: none;
  animation: viewIn 0.25s var(--ease-out);
}
.option.eliminated {
  opacity: 0.45;
  filter: grayscale(0.8);
  transition: opacity 0.3s ease, filter 0.3s ease;
}
.option.eliminated .opt-label { text-decoration: line-through; }

/* ═══════════ Study mark sweep ═══════════ */

.flashcard.mark-known  { animation: sweepRight 0.3s var(--ease-out) forwards; }
.flashcard.mark-review { animation: sweepLeft  0.3s var(--ease-out) forwards; }
@keyframes sweepRight {
  to { opacity: 0; transform: translateX(90px) rotate(4deg); }
}
@keyframes sweepLeft {
  to { opacity: 0; transform: translateX(-90px) rotate(-4deg); }
}
.flashcard.flipped.mark-known  { animation: sweepRightFlipped 0.3s var(--ease-out) forwards; }
.flashcard.flipped.mark-review { animation: sweepLeftFlipped  0.3s var(--ease-out) forwards; }
@keyframes sweepRightFlipped {
  to { opacity: 0; transform: rotateY(180deg) translateX(-90px) rotate(-4deg); }
}
@keyframes sweepLeftFlipped {
  to { opacity: 0; transform: rotateY(180deg) translateX(90px) rotate(4deg); }
}

/* ═══════════ Library mastery bars ═══════════ */

.mastery-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.library-group-title { flex-wrap: wrap; }
.mastery-bar {
  display: inline-block;
  width: 90px;
  height: 6px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  overflow: hidden;
  vertical-align: middle;
}
.mastery-bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--success), #6ee7a0);
  transition: width 0.5s var(--ease-out);
}

/* ═══════════ Feedback speak button ═══════════ */

.fb-speak { flex: none; align-self: center; }
.feedback-inner { width: 100%; }
.feedback-inner > span:not(.fb-speak) { flex: 1; }

/* ═══════════ Option entrance stagger ═══════════ */

.options .option { animation: viewIn 0.3s var(--ease-out) backwards; }
.options .option:nth-child(1) { animation-delay: 0.02s; }
.options .option:nth-child(2) { animation-delay: 0.06s; }
.options .option:nth-child(3) { animation-delay: 0.10s; }
.options .option:nth-child(4) { animation-delay: 0.14s; }

/* ═══════════ Side-by-side quiz on wide screens ═══════════ */

@media (min-width: 960px) {
  .quiz-card.has-image {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: stretch;
  }
  .quiz-card.has-image .image-wrap {
    min-height: 100%;
    border-right: 1px solid var(--border);
  }
  .quiz-card.has-image .image-wrap img,
  .quiz-card.has-image .image-wrap canvas.gif-frame { width: min(100%, 480px); height: 420px; }
  .quiz-card.has-image .q-body { align-self: center; }
  .quiz-card.has-image .options { grid-template-columns: 1fr; }
}

/* ═══════════ Flashcard height on phones ═══════════ */

@media (max-width: 560px) {
  .flashcard { height: clamp(320px, 56vh, 430px); }
  .face img.throw-gif, .face canvas.throw-gif { height: min(250px, 34vh); }
  .back img.throw-gif, .back canvas.throw-gif { height: min(150px, 22vh); }
}

/* the stagger shorthand above would out-cascade the answer feedback
   animations — restore them at higher specificity, delay reset to 0 */
.options .option.correct { animation: popCorrect 0.35s var(--ease-spring); }
.options .option.wrong { animation: shake 0.4s ease; }

/* odd card count: let the last mode card span the full row */
.mode-grid .mode-card:last-child:nth-child(odd) { grid-column: 1 / -1; }

/* ═══════════ Footer credit ═══════════ */

.made-by {
  display: inline-block;
  margin: 0 0 10px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  color: var(--text);
  font-size: 13px;
}
.made-by a {
  color: var(--accent-text);
  font-weight: 700;
  text-decoration: none;
}
.made-by a:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════════════════════════
   Ippon Toss mini-game — host-side chrome + token mapping.
   The game itself (js/judo-game.js) styles its internals through
   these --jg-* variables, so it follows the site theme.
═══════════════════════════════════════════════════════════════ */

:root {
  --jg-accent: var(--accent);
  --jg-accent-text: var(--accent-text);
  --jg-surface: var(--panel);
  --jg-text: var(--text);
  --jg-muted: var(--muted);
  --jg-border: var(--border);
  --jg-radius: var(--radius);
  --jg-gold: #c9a25a;
  --jg-font-body: var(--font-body);
  --jg-font-display: var(--font-display);
  --jg-shadow: var(--shadow-md);
}

/* washi light theme: gold darkens to stay readable, matching the
   site's own --belt-yellow convention */
[data-theme="light"] {
  --jg-gold: #8a6b2f;
}

.game-section { margin-top: 18px; }
.game-head { margin-bottom: 12px; }
.game-eyebrow {
  color: var(--accent-text);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.game-title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.3px;
  margin: 0 0 4px;
}
.game-title-jp {
  margin-left: 10px;
  font-size: 16px;
  font-weight: 600;
  color: var(--muted);
}
.game-sub {
  color: var(--muted);
  font-size: 13.5px;
  margin: 0;
  max-width: 640px;
}