@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;800&family=Noto+Sans+TC:wght@400;500;700;900&family=Noto+Sans+JP:wght@400;500;700;900&family=Press+Start+2P&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Day theme: washi paper and ink. Night theme: dungeon indigo with
   white-framed RPG windows. Class colours are fills, always paired with an
   icon and a label. */
:root {
  --bg-primary: #fffaf0;
  --bg-secondary: #f1e7d3;
  --bg-tertiary: #e6d8bc;
  --text-primary: #1f1a33;
  --text-secondary: #554d6b;
  --text-tertiary: #7d7590;
  --border-color: #1f1a33;
  --frame-inner: #e6d8bc;
  --accent-color: #c92a5e;
  --accent-hover: #a51f4b;
  --accent-light: rgba(201, 42, 94, 0.1);
  --gold: #9a6a12;
  --gold-fill: #f5c04a;
  --success-color: #1b7f57;
  --success-light: rgba(27, 127, 87, 0.12);
  --danger-color: #c22b2b;
  --danger-light: rgba(194, 43, 43, 0.1);
  --hard-shadow: #1f1a33;
  --dot: rgba(31, 26, 51, 0.07);
  --radius-sm: 4px;
  --radius-md: 6px;
  --font-px: 'Press Start 2P', 'Noto Sans TC', 'Noto Sans JP', ui-monospace, monospace;
  --font-mono: 'SF Mono', 'Fira Code', monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #221c3d;
    --bg-secondary: #120f26;
    --bg-tertiary: #2f2752;
    --text-primary: #f6efe2;
    --text-secondary: #c4bada;
    --text-tertiary: #958bb0;
    --border-color: #f6efe2;
    --frame-inner: #4a3f78;
    --accent-color: #ff7eb3;
    --accent-hover: #ff9cc5;
    --accent-light: rgba(255, 126, 179, 0.14);
    --gold: #f5c04a;
    --gold-fill: #f5c04a;
    --success-color: #4fd8a0;
    --success-light: rgba(79, 216, 160, 0.14);
    --danger-color: #ff8a8a;
    --danger-light: rgba(255, 138, 138, 0.12);
    --hard-shadow: #000000;
    --dot: rgba(246, 239, 226, 0.08);
  }
}

html { -webkit-text-size-adjust: 100%; }

/* Components set display (e.g. inline-flex buttons); keep the hidden attribute authoritative. */
[hidden] { display: none !important; }

body {
  font-family: 'Plus Jakarta Sans', 'Noto Sans TC', 'PingFang HK', 'Microsoft JhengHei', 'Noto Sans JP', sans-serif;
  background-color: var(--bg-secondary);
  background-image: radial-gradient(var(--dot) 1.5px, transparent 1.5px);
  background-size: 18px 18px;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-color); }

.px { font-family: var(--font-px); letter-spacing: 0.04em; }

.sprite { display: block; image-rendering: pixelated; }

/* ── RPG window ─────────────────────────────── */

.window {
  background: var(--bg-primary);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: inset 0 0 0 3px var(--bg-primary), inset 0 0 0 5px var(--frame-inner), 5px 5px 0 var(--hard-shadow);
  padding: 1.1rem 1.2rem;
}

/* ── Buttons ────────────────────────────────── */

button, .btn {
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  background: var(--accent-color);
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 4px 4px 0 var(--hard-shadow);
  padding: 0.75rem 1.1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  transition: transform 0.08s ease, box-shadow 0.08s ease, background 0.15s ease;
  touch-action: manipulation;
}
@media (prefers-color-scheme: dark) {
  button, .btn { color: #1a1530; }
}
button:hover, .btn:hover { background: var(--accent-hover); }
button:active, .btn:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--hard-shadow); }
button:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
button:focus-visible, .btn:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px dashed var(--accent-color);
  outline-offset: 3px;
}

button.secondary, .btn.secondary { background: var(--bg-primary); color: var(--text-primary); }
button.secondary:hover, .btn.secondary:hover { background: var(--bg-tertiary); }
button.gold { background: var(--gold-fill); color: #1a1530; }
button.sm { font-size: 0.85rem; padding: 0.4rem 0.7rem; box-shadow: 3px 3px 0 var(--hard-shadow); }

/* ── Inputs ─────────────────────────────────── */

input[type="text"], select {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  padding: 0.6rem 0.75rem;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* ── State utilities ────────────────────────── */

.error-message, .success-message {
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid currentColor;
}
.error-message { background: var(--danger-light); color: var(--danger-color); }
.success-message { background: var(--success-light); color: var(--success-color); }
.empty-state { text-align: center; padding: 1.5rem 1rem; color: var(--text-tertiary); }

.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.loading-spinner::after {
  content: '';
  width: 20px;
  height: 20px;
  background: var(--accent-color);
  animation: blink 0.8s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

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