/* Mahjongg — ivory tiles on a felt table. Sizes come from index.js. */

:root {
  --mj-felt: #0e5a38;
  --mj-felt-deep: #083824;
  --mj-felt-lit: #1f8f5a;
  --mj-ivory: #fffdf8;
  --mj-ivory-shade: #e7d3aa;
  --mj-gold: #a16207;
  --mj-hint: #0f766e;
  --mj-wood-lite: #a56b3c;
  --mj-wood: #6b3f22;
  --mj-danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100dvh;
  background: var(--surface-0, #fafafa);
  color: var(--text-1, #1a1a1a);
  font-family: 'Source Serif 4', Georgia, 'Songti SC', serif;
  -webkit-font-smoothing: antialiased;
}

button,
select,
.score-label,
.btn {
  font-family: Inter, system-ui, sans-serif;
}

.page {
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 12px 16px 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.title-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--mj-felt);
}

.tagline {
  margin: 0;
  color: var(--text-2, #555);
  font-size: 0.98rem;
}

.scores {
  display: flex;
  gap: 8px;
}

.score-box {
  min-width: 68px;
  padding: 4px 10px 6px;
  border-radius: 8px;
  background: var(--mj-felt);
  color: #fff;
  text-align: center;
}

.score-label {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.75;
}

.score-value {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.15rem;
  font-family: Inter, system-ui, sans-serif;
}

.score-box.penalized {
  animation: penalty 0.55s ease;
}

@keyframes penalty {
  0% {
    background: var(--mj-danger);
  }
  100% {
    background: var(--mj-felt);
  }
}

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

.layout-pick {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: Inter, system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-2, #555);
}

select {
  font: inherit;
  font-weight: 600;
  color: var(--text-1, #1a1a1a);
  background: var(--surface-1, #fff);
  border: 1px solid var(--hairline-strong, #c8c8c0);
  border-radius: 8px;
  padding: 8px 10px;
  min-height: 44px;
}

.btn {
  appearance: none;
  min-height: 44px;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--hairline-strong, #c8c8c0);
  background: var(--surface-1, #fff);
  color: var(--text-1, #1a1a1a);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
}

.btn:hover:not(:disabled) {
  border-color: var(--mj-felt);
}

.btn:focus-visible,
select:focus-visible {
  outline: 2px solid #1d4ed8;
  outline-offset: 2px;
}

.btn.primary {
  background: var(--mj-felt);
  color: #fff;
  border-color: transparent;
}

.btn.primary:hover:not(:disabled) {
  background: #0b4a2e;
}

.btn:disabled {
  opacity: 0.45;
  cursor: default;
}

.table-frame {
  padding: 8px;
  border-radius: 26px;
  background: linear-gradient(160deg, var(--mj-wood-lite), var(--mj-wood));
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
}

.table-scroll {
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  border-radius: 18px;
  padding: 16px 14px 20px;
  background: radial-gradient(
    ellipse at 50% 38%,
    var(--mj-felt-lit) 0%,
    var(--mj-felt) 52%,
    var(--mj-felt-deep) 100%
  );
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14), inset 0 0 70px rgba(0, 0, 0, 0.28);
}

.board {
  position: relative;
}

.tile {
  position: absolute;
  padding: 0;
  border: 0;
  display: block;
  background: linear-gradient(165deg, #fffef9 0%, #f6ead2 48%, var(--mj-ivory-shade) 100%);
  border-radius: 8%;
  box-shadow: inset 0 1px 0 #fff, 1px 1px 0 #d4c09a, 2px 3px 0 #b89a68,
    3px 6px 10px rgba(0, 0, 0, 0.35);
  cursor: pointer;
  touch-action: manipulation;
}

.tile[data-free='false'] {
  cursor: default;
}

.tile[data-free='true']:hover {
  filter: brightness(1.05);
}

.tile.selected {
  box-shadow: 0 0 0 3px var(--mj-gold), 3px 8px 14px rgba(0, 0, 0, 0.4);
  filter: brightness(1.06);
}

.tile.hint {
  animation: hint-pulse 0.7s ease-in-out 3;
}

.tile:focus {
  outline: none;
}

.tile:focus-visible {
  outline: 3px solid #1d4ed8;
  outline-offset: 2px;
}

.tile-face {
  position: absolute;
  inset: 8%;
  background: var(--mj-ivory);
  border: 1px solid #c6b48c;
  border-radius: 4px;
  overflow: hidden;
  pointer-events: none;
}

.tile-face svg {
  display: block;
  width: 100%;
  height: 100%;
}

.tile.removing {
  animation: poof 180ms ease forwards;
  pointer-events: none;
}

.tile.shake {
  animation: shake 280ms ease;
}

.tile.dealt {
  animation: deal 260ms ease;
}

@keyframes poof {
  to {
    opacity: 0;
    transform: scale(0.55);
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-3px);
  }
  75% {
    transform: translateX(3px);
  }
}

@keyframes hint-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 3px var(--mj-hint), 0 0 0 rgba(15, 118, 110, 0);
  }
  50% {
    box-shadow: 0 0 0 3px var(--mj-hint), 0 0 16px rgba(15, 118, 110, 0.85);
  }
}

@keyframes deal {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(8, 40, 24, 0.5);
  border-radius: 18px;
}

.overlay[hidden] {
  display: none;
}

.overlay-card {
  width: min(360px, 100%);
  padding: 22px 20px 16px;
  border-radius: 14px;
  background: var(--surface-1, #fff);
  color: var(--text-1, #1a1a1a);
  text-align: center;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

.overlay-card h2 {
  margin: 0 0 6px;
  font-size: 1.6rem;
}

.overlay-card p {
  margin: 0 0 16px;
  color: var(--text-2, #555);
}

.overlay-actions {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.help {
  margin: 0;
  text-align: center;
  color: var(--text-3, #6e6e6e);
  font-size: 0.88rem;
  line-height: 1.45;
}

.help a {
  color: inherit;
}

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

@media (max-width: 720px) {
  .page-header {
    padding-left: 84px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tile.removing,
  .tile.shake,
  .tile.hint,
  .tile.dealt,
  .score-box.penalized {
    animation: none;
  }

  .tile.hint {
    box-shadow: 0 0 0 3px var(--mj-hint);
  }

  .tile.shake {
    outline: 2px solid var(--mj-danger);
  }
}