/* =========================================================
   Tag Dice — Claude 风
   ========================================================= */

:root {
  --bg: #faf9f5;
  --surface: #ffffff;
  --surface-alt: #f6f3eb;
  --ink: #1f1e1d;
  --muted: #7d756c;
  --muted-soft: #b5ada3;
  --accent: #c96442;
  --accent-hi: #d77556;
  --accent-lo: #b15735;
  --accent-soft: #f6e5dc;
  --accent-softer: #fbf1eb;
  --border: #ece5da;
  --border-strong: #ddd3c4;
  --success: #5a8f6b;

  --shadow-card:
    0 1px 2px rgba(60,40,20,.04),
    0 6px 24px rgba(60,40,20,.05);

  --raise:
    0 1px 0 rgba(70,50,30,.04),
    0 1px 2px rgba(70,50,30,.06),
    0 2px 6px rgba(70,50,30,.05),
    inset 0 1px 0 rgba(255,255,255,.7);
  --raise-hover:
    0 2px 0 rgba(70,50,30,.05),
    0 3px 6px rgba(70,50,30,.09),
    0 6px 14px rgba(70,50,30,.08),
    inset 0 1px 0 rgba(255,255,255,.7);
  --raise-press:
    0 0 0 rgba(70,50,30,.04),
    inset 0 1px 2px rgba(70,50,30,.12),
    inset 0 -1px 0 rgba(255,255,255,.4);

  --raise-accent:
    0 1px 0 rgba(140,60,30,.35),
    0 2px 4px rgba(201,100,66,.18),
    0 6px 16px rgba(201,100,66,.22),
    inset 0 1px 0 rgba(255,255,255,.28);
  --raise-accent-hover:
    0 2px 0 rgba(140,60,30,.4),
    0 4px 8px rgba(201,100,66,.22),
    0 10px 24px rgba(201,100,66,.28),
    inset 0 1px 0 rgba(255,255,255,.32);
  --raise-accent-press:
    0 0 0 rgba(140,60,30,.35),
    inset 0 2px 4px rgba(0,0,0,.18),
    inset 0 -1px 0 rgba(255,255,255,.1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1b18;
    --surface: #26241f;
    --surface-alt: #2e2b25;
    --ink: #ede7d8;
    --muted: #958c7d;
    --muted-soft: #706757;
    --accent: #d77556;
    --accent-hi: #e3805f;
    --accent-lo: #b15735;
    --accent-soft: #3b2d24;
    --accent-softer: #2f241d;
    --border: #393530;
    --border-strong: #4a4540;
    --success: #7ba88a;

    --shadow-card:
      0 1px 2px rgba(0,0,0,.3),
      0 6px 24px rgba(0,0,0,.35);

    --raise:
      0 1px 0 rgba(0,0,0,.25),
      0 1px 2px rgba(0,0,0,.3),
      0 2px 6px rgba(0,0,0,.25),
      inset 0 1px 0 rgba(255,255,255,.04);
    --raise-hover:
      0 2px 0 rgba(0,0,0,.3),
      0 4px 8px rgba(0,0,0,.4),
      0 8px 18px rgba(0,0,0,.35),
      inset 0 1px 0 rgba(255,255,255,.05);
    --raise-press:
      0 0 0 rgba(0,0,0,.25),
      inset 0 1px 2px rgba(0,0,0,.4),
      inset 0 -1px 0 rgba(255,255,255,.02);

    --raise-accent:
      0 1px 0 rgba(0,0,0,.4),
      0 2px 4px rgba(0,0,0,.3),
      0 6px 16px rgba(215,117,86,.18),
      inset 0 1px 0 rgba(255,255,255,.12);
    --raise-accent-hover:
      0 2px 0 rgba(0,0,0,.45),
      0 4px 8px rgba(0,0,0,.35),
      0 10px 24px rgba(215,117,86,.22),
      inset 0 1px 0 rgba(255,255,255,.14);
    --raise-accent-press:
      0 0 0 rgba(0,0,0,.4),
      inset 0 2px 4px rgba(0,0,0,.45),
      inset 0 -1px 0 rgba(255,255,255,.04);
  }
}

* { box-sizing: border-box; }

html, body {
  -webkit-tap-highlight-color: transparent;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font: 15px/1.55 -apple-system, "PingFang SC", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-feature-settings: "tnum", "calt";
  transition: background-color .2s, color .2s;
}

button {
  font: inherit;
  color: inherit;
}

main {
  max-width: 620px;
  margin: 0 auto;
  padding: 44px 22px 80px;
}

/* ============== header ============== */
header h1 {
  font-size: 25px;
  font-weight: 600;
  letter-spacing: -.3px;
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.title-dice {
  color: var(--accent);
  flex-shrink: 0;
  transform: rotate(-8deg);
}

.sub {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .1px;
}

.sub code {
  background: var(--accent-soft);
  color: var(--accent-lo);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 11.5px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

.row-label {
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted-soft);
  margin: 18px 0 8px;
  font-weight: 500;
}
.row-label.inline { margin: 0; }

/* ============== style switch ============== */
.style-switch {
  display: inline-flex;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3px;
  margin-bottom: 4px;
  box-shadow: inset 0 1px 2px rgba(70,50,30,.05);
}

.style-btn {
  font-size: 13px;
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 8px 18px;
  border-radius: 9px;
  cursor: pointer;
  transition: color .15s, background .15s, box-shadow .15s;
  font-weight: 500;
  letter-spacing: .2px;
}

.style-btn:hover { color: var(--ink); }
.style-btn.active {
  background: linear-gradient(180deg, var(--accent-hi), var(--accent));
  color: white;
  box-shadow: var(--raise-accent);
}

/* ============== presets ============== */
.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.preset-btn {
  font-size: 13px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: var(--raise);
  transition: transform .12s ease, box-shadow .12s ease, color .12s, background .12s;
  letter-spacing: .2px;
}

.preset-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--raise-hover);
  color: var(--accent-lo);
  border-color: var(--accent);
}
.preset-btn:active {
  transform: translateY(0);
  box-shadow: var(--raise-press);
}
.preset-btn.active {
  background: linear-gradient(180deg, var(--accent-hi), var(--accent));
  color: white;
  border-color: var(--accent-lo);
  box-shadow: var(--raise-accent);
}
.preset-btn.active:hover { box-shadow: var(--raise-accent-hover); }
.preset-btn.active:active { box-shadow: var(--raise-accent-press); }

/* ============== card ============== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 26px 22px;
  box-shadow: var(--shadow-card);
  margin-bottom: 18px;
  position: relative;
}

.card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card li {
  display: grid;
  grid-template-columns: 78px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 2px 0;
}

.dim {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted-soft);
  text-transform: uppercase;
  font-weight: 500;
}

.tag {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.45;
  letter-spacing: .2px;
}

.reroll {
  font-size: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent);
  cursor: pointer;
  opacity: .5;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  box-shadow: var(--raise);
  transition: all .12s;
}

.card li:hover .reroll { opacity: 1; }
.reroll:hover {
  transform: translateY(-1px) rotate(60deg);
  box-shadow: var(--raise-hover);
  background: var(--accent-soft);
  border-color: var(--accent);
}
.reroll:active {
  transform: translateY(0);
  box-shadow: var(--raise-press);
}

/* ============== chips (替代 copyline) ============== */
.chips {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px dashed var(--border-strong);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  font-size: 12px;
  background: var(--accent-softer);
  color: var(--accent-lo);
  border: 1px solid transparent;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: .15px;
  transition: all .12s;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  line-height: 1.4;
}

.chip:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.chip:active { transform: translateY(0); }
.chip.copied {
  background: var(--accent);
  color: white;
  border-color: var(--accent-lo);
}
.chip.failed {
  background: #f3d8d8;
  color: #a33;
  border-color: #c66;
}

/* ============== controls ============== */
.controls {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.controls button {
  padding: 12px 22px;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--raise);
  transition: transform .12s, box-shadow .12s, color .12s, background .12s, border-color .12s;
  min-height: 44px;
  letter-spacing: .3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.controls button:hover {
  transform: translateY(-1px);
  box-shadow: var(--raise-hover);
  border-color: var(--accent);
  color: var(--accent-lo);
}
.controls button:active {
  transform: translateY(0);
  box-shadow: var(--raise-press);
}

.controls .primary {
  background: linear-gradient(180deg, var(--accent-hi), var(--accent));
  color: white;
  border-color: var(--accent-lo);
  padding: 12px 30px;
  font-weight: 600;
  letter-spacing: .6px;
  box-shadow: var(--raise-accent);
}

.controls .primary:hover {
  background: linear-gradient(180deg, #e3805f, var(--accent));
  color: white;
  border-color: var(--accent-lo);
  box-shadow: var(--raise-accent-hover);
}
.controls .primary:active {
  background: var(--accent-lo);
  box-shadow: var(--raise-accent-press);
}

.controls button.copied {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

.dice-icon {
  transition: transform .15s;
  flex-shrink: 0;
}

.controls .primary:hover .dice-icon {
  transform: rotate(-15deg);
}

.controls .primary.rolling .dice-icon {
  animation: dice-spin .6s cubic-bezier(.4, 0, .2, 1);
}

@keyframes dice-spin {
  0%   { transform: rotate(0) scale(1); }
  40%  { transform: rotate(180deg) scale(1.15); }
  100% { transform: rotate(360deg) scale(1); }
}

.hint {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
  letter-spacing: .2px;
}

/* ============== generate row + story ============== */
.generate-row {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.generate-btn {
  font: inherit;
  font-size: 13px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--ink);
  padding: 9px 16px;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: var(--raise);
  transition: all .12s;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 500;
  letter-spacing: .3px;
}

.generate-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--raise-hover);
  border-color: var(--accent);
  color: var(--accent-lo);
}
.generate-btn:active { transform: translateY(0); box-shadow: var(--raise-press); }
.generate-btn:disabled { opacity: .6; cursor: progress; }
.generate-btn.loading svg {
  animation: gen-spin 1s linear infinite;
}
@keyframes gen-spin {
  to { transform: rotate(360deg); }
}

.generate-hint {
  font-size: 11.5px;
  color: var(--muted-soft);
  letter-spacing: .2px;
}

.story {
  margin-top: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: var(--shadow-card);
  animation: tag-in .4s cubic-bezier(.16, 1, .3, 1);
}

.story-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 8px;
}

.story-actions {
  display: flex;
  gap: 4px;
  align-items: center;
}

.story-actions .ghost-btn {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
}

.story-body {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
  letter-spacing: .3px;
  word-break: break-word;
  font-family: -apple-system, "PingFang SC", "Noto Serif SC", "Songti SC", "Segoe UI", system-ui, serif;
}

.story-body p {
  margin: 0 0 0.65em;
  text-indent: 2em;
}

.story-body p:last-child { margin-bottom: 0; }

.story-body.error {
  color: var(--accent-lo);
  font-size: 13px;
  line-height: 1.6;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  white-space: pre-wrap;
}

.story-body.error p { text-indent: 0; }

.story-meta {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--border-strong);
  font-size: 11px;
  color: var(--muted-soft);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  letter-spacing: .3px;
}

/* ============== history ============== */
.history {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.ghost-btn {
  font-size: 11px;
  background: transparent;
  border: none;
  color: var(--muted-soft);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 6px;
  transition: all .12s;
  letter-spacing: .3px;
}

.ghost-btn:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

#historyList {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.history-item {
  width: 100%;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 12.5px;
  line-height: 1.55;
  word-break: break-word;
  box-shadow: 0 1px 2px rgba(70,50,30,.03);
  transition: all .12s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-item:hover {
  background: var(--accent-softer);
  color: var(--ink);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: var(--raise);
}
.history-item:active { transform: translateY(0); }

.history-item.copied {
  background: var(--accent);
  color: white;
  border-color: var(--accent-lo);
}
.history-item.copied .history-chip,
.history-item.copied .history-time {
  color: rgba(255,255,255,.85);
  background: rgba(255,255,255,.15);
}

.history-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-size: 10.5px;
}

.history-chip {
  background: var(--accent-softer);
  color: var(--accent-lo);
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: .2px;
  transition: all .12s;
}

.history-time {
  color: var(--muted-soft);
  margin-left: auto;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 10.5px;
}

.history-tags {
  font-size: 12.5px;
  line-height: 1.55;
  color: inherit;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  letter-spacing: .15px;
}

/* ============== animations ============== */
@keyframes flash {
  0%   { background: var(--accent-soft); }
  100% { background: transparent; }
}
.flash { animation: flash .55s ease-out; }

@keyframes tag-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#result.animate-in li {
  animation: tag-in .42s cubic-bezier(.16, 1, .3, 1) backwards;
}
#result.animate-in li:nth-child(1) { animation-delay: 0ms; }
#result.animate-in li:nth-child(2) { animation-delay: 60ms; }
#result.animate-in li:nth-child(3) { animation-delay: 120ms; }
#result.animate-in li:nth-child(4) { animation-delay: 180ms; }
#result.animate-in li:nth-child(5) { animation-delay: 240ms; }
#result.animate-in li:nth-child(6) { animation-delay: 300ms; }
#result.animate-in li:nth-child(7) { animation-delay: 360ms; }

@keyframes chips-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
#chips.animate-in {
  animation: chips-in .5s ease-out .42s backwards;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ============== 响应式：手机 ============== */
@media (max-width: 560px) {
  main {
    padding: 28px 16px 64px;
    max-width: 100%;
  }
  header h1 { font-size: 22px; gap: 8px; }
  .title-dice { width: 19px; height: 19px; }
  .sub { font-size: 12.5px; margin-bottom: 20px; }

  .row-label { margin: 14px 0 6px; }

  .style-switch { width: 100%; }
  .style-btn {
    flex: 1;
    padding: 10px 12px;
    text-align: center;
  }

  .presets { gap: 6px; margin-bottom: 18px; }
  .preset-btn {
    padding: 9px 13px;
    font-size: 13px;
    min-height: 38px;
  }

  .card {
    padding: 20px 18px 18px;
    border-radius: 14px;
  }
  .card ul { gap: 16px; }
  .card li {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    gap: 4px 10px;
    align-items: start;
  }
  .card li .dim {
    grid-column: 1;
    grid-row: 1;
    font-size: 10.5px;
  }
  .card li .tag {
    grid-column: 1;
    grid-row: 2;
    font-size: 15.5px;
  }
  .card li .reroll {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
    opacity: .85;
    width: 36px;
    height: 36px;
  }

  .chips { margin-top: 18px; padding-top: 14px; }
  .chip { font-size: 11.5px; }

  .controls { gap: 8px; }
  .controls button {
    flex: 1;
    padding: 13px 16px;
    min-height: 48px;
  }
  .controls .primary { padding: 13px 16px; flex: 1.6; }

  .history { margin-top: 36px; }
  .history-item { padding: 12px 14px; }
}

@media (max-width: 380px) {
  .style-btn { padding: 10px 8px; font-size: 12.5px; }
  .preset-btn { padding: 8px 11px; font-size: 12.5px; }
  .card li .tag { font-size: 15px; }
}