/* TaiChan Games Board — shared shell: design tokens, portal grid, game chrome. */

:root {
  --bg: #0b1020;
  --bg-2: #121a2b;
  --surface: #182235;
  --surface-2: #202d43;
  --line: #304058;
  --text: #f5f7fb;
  --text-dim: #a7b3c6;
  --accent: #63ddbb;
  --accent-2: #ffc765;
  --danger: #ff7d73;
  --felt: #167354;
  --felt-2: #0b4938;
  --radius: 18px;
  --radius-sm: 11px;
  --shadow: 0 18px 50px rgba(0, 0, 0, .30);
  --shadow-soft: 0 8px 24px rgba(0, 0, 0, .18);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

:root[data-theme="light"] {
  --bg: #f4f1e9;
  --bg-2: #ebe7dc;
  --surface: #ffffff;
  --surface-2: #f4f6f8;
  --line: #d7d7d1;
  --text: #182033;
  --text-dim: #647086;
  --shadow: 0 18px 50px rgba(33, 41, 55, .14);
  --shadow-soft: 0 8px 22px rgba(33, 41, 55, .10);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-text-size-adjust: 100%;
}

body { min-height: 100vh; }

button, input, select { font-family: inherit; }

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 75%, white);
  outline-offset: 3px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Buttons & controls ---------- */

.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
  font-size: .92rem;
  font-weight: 600;
  padding: .5rem .95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .05) inset;
  transition: background .18s, border-color .18s, transform .12s, box-shadow .18s;
  white-space: nowrap;
}
.btn:hover { background: var(--line); transform: translateY(-1px); box-shadow: var(--shadow-soft); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: linear-gradient(135deg, var(--accent), #45cfa7); border-color: var(--accent); color: #06231b; }
.btn.primary:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .45; cursor: default; }

select, input[type="text"], input[type="number"] {
  appearance: none;
  font: inherit;
  font-size: .9rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: .45rem 1.9rem .45rem .6rem;
  cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-dim) 50%),
                    linear-gradient(135deg, var(--text-dim) 50%, transparent 50%);
  background-position: calc(100% - 15px) 52%, calc(100% - 10px) 52%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.ctl {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* ---------- Game page chrome ---------- */

.game-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: .7rem 1.1rem;
  background: color-mix(in srgb, var(--bg-2) 90%, transparent);
  backdrop-filter: blur(18px) saturate(1.15);
  -webkit-backdrop-filter: blur(18px) saturate(1.15);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 40;
}

.game-header .back {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-dim);
}
.game-header .back:hover { color: var(--accent); text-decoration: none; }

.game-header h1 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -.015em;
}

.game-controls {
  display: flex;
  align-items: center;
  gap: .7rem;
  flex-wrap: wrap;
  margin-left: auto;
}

.status {
  font-size: .85rem;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}
.status b { color: var(--text); font-variant-numeric: tabular-nums; }

.game-main {
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.felt {
  background:
    radial-gradient(circle at 50% -20%, rgba(255, 255, 255, .12), transparent 42%),
    radial-gradient(ellipse at 50% 0%, var(--felt) 0%, var(--felt-2) 100%);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- Toast / overlay ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%) translateY(1rem);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: .65rem 1.1rem;
  font-size: .92rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 100;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(8, 11, 16, .72);
  z-index: 90;
  padding: 1rem;
}
.overlay.show { display: flex; }
.overlay .panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.6rem 1.8rem;
  text-align: center;
  max-width: 22rem;
}
.overlay .panel h2 { margin: 0 0 .4rem; font-size: 1.5rem; }
.overlay .panel p { margin: 0 0 1.1rem; color: var(--text-dim); }

/* ---------- Portal ---------- */

.portal-page {
  background:
    radial-gradient(circle at 10% -10%, rgba(99, 221, 187, .13), transparent 30rem),
    radial-gradient(circle at 90% 0%, rgba(255, 199, 101, .11), transparent 27rem),
    var(--bg);
}

.portal-page::before,
.portal-page::after { pointer-events: none; }

.portal-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1rem 1.2rem 0;
}

.portal-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.portal-brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  color: var(--text);
  font-size: .94rem;
  font-weight: 800;
  letter-spacing: -.01em;
}

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid color-mix(in srgb, var(--accent) 70%, white);
  color: #06231b;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 20px rgba(99, 221, 187, .2);
  font-size: 1.15rem;
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
}

.portal-header {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: 1rem;
  padding: clamp(2.2rem, 7vw, 4.9rem) clamp(1.3rem, 6vw, 4.5rem);
  text-align: left;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  border-radius: 28px;
  background:
    linear-gradient(120deg, rgba(9, 15, 27, .94) 0%, rgba(13, 27, 39, .88) 55%, rgba(15, 63, 51, .64) 100%);
  box-shadow: var(--shadow);
}

.portal-header > :not(.hero-taichan) {
  position: relative;
  z-index: 2;
}

:root[data-theme="light"] .portal-header {
  background: linear-gradient(120deg, rgba(255,255,255,.96), rgba(248,247,240,.93) 58%, rgba(210,244,233,.88));
}

.portal-header::after {
  content: "♠  ♥  ♦  ♣";
  position: absolute;
  z-index: -1;
  right: clamp(-2rem, 2vw, 1.5rem);
  bottom: -1.5rem;
  color: rgba(255, 255, 255, .075);
  font-family: Georgia, serif;
  font-size: clamp(5rem, 14vw, 10rem);
  font-weight: 900;
  letter-spacing: -.12em;
  transform: rotate(-7deg);
  white-space: nowrap;
}

:root[data-theme="light"] .portal-header::after { color: rgba(20, 100, 78, .08); }

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin: 0 0 .8rem;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hero-kicker::before {
  content: "";
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 18%, transparent);
}

.portal-header h1 {
  max-width: 62%;
  margin: 0 0 .75rem;
  font-size: clamp(2.35rem, 7vw, 5.2rem);
  line-height: .96;
  font-weight: 900;
  letter-spacing: -.055em;
}
.portal-header > p:not(.hero-kicker) {
  max-width: 54%;
  margin: 0;
  color: var(--text-dim);
  font-size: clamp(1rem, 2.1vw, 1.18rem);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-top: 1.55rem;
}

.hero-actions .btn { padding: .72rem 1.05rem; }

.hero-taichan {
  position: absolute;
  z-index: 1;
  top: 50%;
  right: clamp(1.1rem, 4vw, 3.5rem);
  width: min(38%, 27rem);
  margin: 0;
  padding: .55rem .55rem .45rem;
  border-radius: 8px;
  background: #f5f0e6;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .46);
  transform: translateY(-49%) rotate(2.2deg);
  transition: transform .3s ease;
}

.portal-header:hover .hero-taichan {
  transform: translateY(-50%) rotate(.7deg) scale(1.015);
}

.hero-taichan img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  filter: saturate(1.08) contrast(1.045) brightness(1.015);
}

.hero-taichan figcaption {
  padding: .45rem .2rem .05rem;
  color: #27302d;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .045em;
  text-align: center;
  text-transform: uppercase;
}

.library-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  max-width: 1180px;
  margin: 2rem auto .8rem;
  padding: 0 1.2rem;
}

.library-head h2 { margin: 0; font-size: clamp(1.45rem, 3vw, 2rem); letter-spacing: -.03em; }
.library-head p { margin: .3rem 0 0; color: var(--text-dim); font-size: .9rem; }
.game-count { font-size: .82rem; color: var(--text-dim); white-space: nowrap; }

.portal-tools {
  position: sticky;
  top: .65rem;
  z-index: 35;
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  width: fit-content;
  max-width: calc(100% - 2.4rem);
  margin: 0 auto 1.4rem;
  padding: .55rem;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-2) 88%, transparent);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
}
.portal-tools input[type="search"] {
  font: inherit;
  font-size: .95rem;
  color: var(--text);
  background: transparent;
  border: 0;
  border-radius: 99px;
  padding: .5rem 1rem;
  width: min(20rem, 70vw);
}
.chip {
  font: inherit;
  font-size: .85rem;
  font-weight: 600;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  border-radius: 99px;
  padding: .42rem .95rem;
  cursor: pointer;
}
.chip[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #06231b;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(205px, 1fr));
  gap: 1.05rem;
  padding: 0 1.2rem 3rem;
  max-width: 1180px;
  margin: 0 auto;
}

.tile {
  position: relative;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 0 rgba(255,255,255,.04) inset;
  transition: transform .2s ease, border-color .2s, box-shadow .2s;
}
.tile:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
  text-decoration: none;
}
.tile .art {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 2.85;
  background:
    radial-gradient(circle at 80% 0%, color-mix(in srgb, var(--tile-accent, var(--accent)) 16%, transparent), transparent 55%),
    var(--surface-2);
  transition: transform .28s ease;
}
.tile:hover .art { transform: scale(1.025); }
.tile .label { position: relative; padding: .78rem .9rem 1rem; background: var(--surface); }
.tile .label b { display: block; padding-right: 1.2rem; font-size: 1rem; font-weight: 800; letter-spacing: -.015em; }
.tile .label > span:not(.tile-meta) { display: block; font-size: .79rem; color: var(--text-dim); margin-top: .22rem; line-height: 1.35; }
.tile .label::after { content: "→"; position: absolute; right: .9rem; top: .78rem; color: var(--tile-accent, var(--accent)); font-weight: 800; }
.tile-meta {
  position: absolute;
  left: .65rem;
  top: .65rem;
  padding: .22rem .5rem;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 99px;
  background: rgba(8, 13, 22, .68);
  color: #eef3fb;
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .07em;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
}

.tile[data-cat="cards"] { --tile-accent: #63ddbb; }
.tile[data-cat="board"] { --tile-accent: #ffc765; }
.tile[data-cat="puzzle"] { --tile-accent: #a88bff; }
.tile[data-cat="arcade"] { --tile-accent: #ff8179; }

.portal-footer {
  text-align: center;
  padding: 0 1.2rem 2.5rem;
  color: var(--text-dim);
  font-size: .82rem;
}

@media (max-width: 800px) {
  .portal-header h1,
  .portal-header > p:not(.hero-kicker) { max-width: none; }

  .hero-taichan {
    position: relative;
    inset: auto;
    width: min(100%, 31rem);
    margin: 2rem auto 0;
    transform: rotate(1.4deg);
  }

  .portal-header:hover .hero-taichan {
    transform: rotate(.4deg) scale(1.01);
  }
}

@media (max-width: 560px) {
  .game-header { gap: .6rem; padding: .6rem .8rem; }
  .game-header h1 { font-size: .98rem; width: 100%; order: 3; }
  .game-controls { margin-left: 0; width: 100%; order: 4; }
  .game-main { padding: .7rem; }
  .portal-wrap { padding: .75rem .75rem 0; }
  .portal-header { border-radius: 22px; padding: 2.3rem 1.25rem; }
  .portal-header h1 { font-size: clamp(2.3rem, 14vw, 3.6rem); }
  .hero-taichan { margin-top: 1.6rem; padding: .4rem .4rem .35rem; }
  .portal-tools { position: static; width: auto; max-width: none; margin: 0 .75rem 1.2rem; border-radius: 20px; }
  .portal-tools input[type="search"] { width: 100%; flex-basis: 100%; background: var(--surface); }
  .library-head { padding: 0 .85rem; align-items: center; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 0 .75rem 2rem; gap: .75rem; }
  .tile .label { padding: .68rem .7rem .82rem; }
  .tile .label::after { display: none; }
  .tile .label b { padding: 0; font-size: .9rem; }
  .tile .art { aspect-ratio: 4 / 3; }
}

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