/* Mangala: dark page, warm wooden board drawn with CSS gradients only. */

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #26344b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #d97706;
  --accent-bright: #f59e0b;
  --accent-ink: #1c1003;
  --focus: #fde68a;
  --capture: #f87171;
  --line: rgba(148, 163, 184, 0.16);
  --radius: 12px;
  --shadow: 0 18px 40px rgba(2, 6, 23, 0.5);
  --shadow-soft: 0 6px 18px rgba(2, 6, 23, 0.35);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --t-fast: 150ms;
  --t-mid: 200ms;
  --t-slow: 250ms;
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(900px 480px at 50% -12%, rgba(217, 119, 6, 0.16), transparent 70%),
    radial-gradient(700px 500px at 100% 100%, rgba(30, 41, 59, 0.8), transparent 70%),
    var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.45;
}

[hidden] {
  display: none !important;
}

/* ---------------------------------------------------------------- header and footer */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 14px 16px 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: clamp(21px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: 0.01em;
}

.logo {
  width: 36px;
  height: 36px;
  flex: none;
  filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.45));
}

.topbar-actions {
  display: flex;
  gap: 8px;
}

.footer {
  padding: 4px 16px 10px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.footer a {
  display: inline-block;
  padding: 11px 4px;
  color: #fbbf24;
  text-decoration-color: rgba(251, 191, 36, 0.4);
  text-underline-offset: 3px;
}

.footer a:hover {
  text-decoration-color: currentColor;
}

/* ---------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition:
    background-color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease),
    opacity var(--t-mid) var(--ease);
}

.btn:hover:not(:disabled) {
  border-color: rgba(245, 158, 11, 0.6);
  background: var(--surface-2);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  box-shadow: none;
}

.btn:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.btn-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover:not(:disabled) {
  border-color: var(--accent-bright);
  background: var(--accent-bright);
}

.btn-lang {
  min-width: 44px;
  padding: 0 10px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.icon {
  width: 18px;
  height: 18px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------------------------------------------------------------- layout */

.app {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 4px 16px 8px;
}

.table {
  display: grid;
  gap: 10px;
  width: min(980px, 100%);
}

/* ---------------------------------------------------------------- player bars */

.player {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(30, 41, 59, 0.85);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--t-slow) var(--ease), box-shadow var(--t-slow) var(--ease);
}

.player-dot {
  width: 10px;
  height: 10px;
  flex: none;
  border-radius: 50%;
  background: #475569;
  transition: background-color var(--t-slow) var(--ease), box-shadow var(--t-slow) var(--ease);
}

.player-name {
  font-weight: 700;
}

.player-tag {
  padding: 1px 9px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.14);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.player-score-wrap {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-left: auto;
}

.player-caption {
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.player-score {
  min-width: 2ch;
  font-size: 21px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.player.active {
  border-color: rgba(217, 119, 6, 0.8);
  box-shadow: 0 0 0 1px rgba(217, 119, 6, 0.45), 0 0 26px rgba(217, 119, 6, 0.18), var(--shadow-soft);
}

.player.active .player-dot {
  background: var(--accent-bright);
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.85);
}

.player.thinking .player-dot {
  animation: pulse 0.8s ease-in-out infinite alternate;
}

.player.winner {
  border-color: rgba(250, 204, 21, 0.85);
  box-shadow: 0 0 0 1px rgba(250, 204, 21, 0.5), 0 0 30px rgba(250, 204, 21, 0.2), var(--shadow-soft);
}

.player.winner .player-score {
  color: #fcd34d;
}

/* ---------------------------------------------------------------- the wooden board */

.board {
  --gap: clamp(3px, 0.9vw, 11px);
  --store-w: clamp(34px, 9vw, 104px);
  --stone: clamp(9px, 2.4vw, 17px);
  --travel: 140ms;
  --well-shadow:
    inset 0 clamp(3px, 0.7vw, 8px) clamp(5px, 1.3vw, 14px) rgba(0, 0, 0, 0.62),
    inset 0 -2px 3px rgba(255, 210, 150, 0.14),
    0 1px 0 rgba(255, 232, 196, 0.3);
  position: relative;
  display: grid;
  grid-template-columns: var(--store-w) repeat(6, minmax(0, 1fr)) var(--store-w);
  column-gap: var(--gap);
  row-gap: clamp(8px, 1.6vw, 16px);
  padding: clamp(9px, 2.2vw, 24px) clamp(6px, 2vw, 22px);
  border-radius: clamp(18px, 4vw, 36px);
  background-color: #7b4a22;
  background-image:
    radial-gradient(120% 70% at 50% 0%, rgba(255, 214, 160, 0.2), transparent 60%),
    radial-gradient(ellipse 16% 6% at 26% 50%, rgba(70, 36, 12, 0.4), transparent 72%),
    radial-gradient(ellipse 12% 4% at 74% 49%, rgba(70, 36, 12, 0.32), transparent 72%),
    repeating-linear-gradient(177deg, rgba(255, 220, 170, 0.07) 0 2px, transparent 2px 9px),
    repeating-linear-gradient(183deg, rgba(60, 28, 8, 0.13) 0 1px, transparent 1px 14px),
    linear-gradient(180deg, #a56c36 0%, #8a552a 42%, #6c411f 100%);
  box-shadow:
    inset 0 2px 0 rgba(255, 228, 190, 0.35),
    inset 0 -8px 18px rgba(40, 18, 4, 0.45),
    0 0 0 1px rgba(30, 14, 4, 0.65),
    var(--shadow);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.cell {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(3px, 0.6vw, 7px);
  min-width: 0;
}

.pit {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: default;
  -webkit-tap-highlight-color: transparent;
}

.pit.top,
.store.top {
  flex-direction: column-reverse;
}

.well {
  position: relative;
  display: block;
  width: 100%;
  border-radius: 50% / 46%;
  background:
    radial-gradient(ellipse 80% 60% at 50% 28%, rgba(0, 0, 0, 0.32), transparent 70%),
    radial-gradient(ellipse at 50% 62%, #52321b 0%, #3e2310 55%, #2d1809 100%);
  box-shadow: var(--well-shadow);
  transition:
    box-shadow var(--t-mid) var(--ease),
    transform var(--t-fast) var(--ease),
    filter var(--t-mid) var(--ease);
}

.pit .well {
  aspect-ratio: 1 / 1;
}

.store .well {
  flex: 1;
  min-height: 0;
  border-radius: 999px / 70px;
}

.count {
  min-width: 2.1em;
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(30, 16, 6, 0.55);
  box-shadow: inset 0 1px 0 rgba(255, 235, 200, 0.12);
  color: #fde7c2;
  font-size: clamp(11px, 1.45vw, 15px);
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  font-variant-numeric: tabular-nums;
  transition: background-color var(--t-mid) var(--ease), color var(--t-mid) var(--ease);
}

.store .count {
  font-size: clamp(12px, 1.7vw, 17px);
}

/* pits the player may pick */
.pit.playable {
  cursor: pointer;
}

.pit.playable .well {
  box-shadow: var(--well-shadow), 0 0 0 2px rgba(245, 158, 11, 0.95), 0 0 18px rgba(245, 158, 11, 0.42);
}

@media (hover: hover) {
  .pit.playable:hover .well {
    transform: translateY(-2px);
    filter: brightness(1.14);
  }
}

.pit.playable:active .well {
  transform: translateY(1px);
}

.pit:focus-visible {
  outline: none;
}

.pit:focus-visible .well {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

/* the pit the last move started from */
.cell.origin .count {
  background: var(--accent);
  color: var(--accent-ink);
}

/* where the last stone would land (hover or focus) */
.cell.preview .well::after {
  content: "";
  position: absolute;
  inset: -5px;
  border: 2px dashed var(--focus);
  border-radius: inherit;
  pointer-events: none;
}

/* the pit that just received a stone */
.cell.hit .well {
  filter: brightness(1.32);
  box-shadow: var(--well-shadow), 0 0 0 2px rgba(253, 230, 138, 0.85);
}

/* pits being captured, and the treasury receiving them */
.cell.captured .well {
  box-shadow: var(--well-shadow), 0 0 0 2px var(--capture), 0 0 22px rgba(248, 113, 113, 0.65);
  animation: flash 0.5s ease-in-out infinite alternate;
}

/* ---------------------------------------------------------------- stones and the hand */

.stone {
  position: absolute;
  left: calc(50% + var(--x) * 100%);
  top: calc(50% + var(--y) * 100%);
  width: var(--stone);
  height: var(--stone);
  margin: calc(var(--stone) / -2) 0 0 calc(var(--stone) / -2);
  border-radius: 50%;
  background: radial-gradient(circle at 34% 30%, rgba(255, 255, 255, 0.92) 0 9%, var(--c) 40%, var(--d) 100%);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.6), inset 0 -1px 2px rgba(0, 0, 0, 0.2);
  pointer-events: none;
}

.stone.new {
  animation: stone-drop 0.24s var(--ease) both;
}

.hand {
  --size: clamp(22px, 3vw, 34px);
  position: absolute;
  left: 0;
  top: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  width: var(--size);
  height: var(--size);
  margin: calc(var(--size) / -2) 0 0 calc(var(--size) / -2);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff3c4 0 10%, #fbbf24 45%, #b45309 100%);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.45), 0 0 0 2px rgba(255, 255, 255, 0.55);
  color: var(--accent-ink);
  font-size: clamp(11px, 1.4vw, 15px);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  opacity: 0;
  pointer-events: none;
  transform: translate(var(--hx, 0), var(--hy, 0));
  transition: transform var(--travel) var(--ease), opacity var(--t-fast) linear;
}

.hand.visible {
  opacity: 1;
}

.hand.jump {
  transition: opacity var(--t-fast) linear;
}

/* ---------------------------------------------------------------- status, messages, toolbar */

.feed {
  display: grid;
  justify-items: center;
  gap: 6px;
  min-height: 62px;
  text-align: center;
}

.status {
  margin: 0;
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 700;
}

.status.result {
  color: #fcd34d;
  font-size: clamp(21px, 3vw, 28px);
  animation: rise var(--t-slow) var(--ease);
}

.final-score {
  margin: 0;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.events {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  min-height: 28px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border: 1px solid rgba(245, 158, 11, 0.5);
  border-radius: 999px;
  background: rgba(217, 119, 6, 0.14);
  color: #fde7c2;
  font-size: 13px;
  font-weight: 600;
  animation: rise var(--t-slow) var(--ease);
}

.chip.capture {
  border-color: rgba(248, 113, 113, 0.55);
  background: rgba(239, 68, 68, 0.14);
  color: #fecaca;
}

.chip.sweep {
  border-color: rgba(45, 212, 191, 0.5);
  background: rgba(20, 184, 166, 0.13);
  color: #ccfbf1;
}

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

.keys-hint {
  display: none;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@media (hover: hover) and (pointer: fine) and (min-width: 760px) {
  .keys-hint {
    display: block;
  }
}

/* ---------------------------------------------------------------- dialogs */

dialog {
  width: min(560px, calc(100vw - 24px));
  max-height: calc(100dvh - 32px);
  padding: 0;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

dialog[open] {
  animation: rise var(--t-slow) var(--ease);
}

dialog::backdrop {
  background: rgba(2, 6, 23, 0.68);
  backdrop-filter: blur(3px);
}

.dialog-body {
  padding: 20px;
}

.dialog-body h2 {
  margin: 0 0 14px;
  font-size: 20px;
}

/* the Rules title takes the focus on open, so the dialog starts at the top */
.dialog-body h2:focus {
  outline: none;
}

.choice {
  margin: 0 0 16px;
  padding: 0;
  border: 0;
  min-width: 0;
}

.choice legend {
  margin-bottom: 8px;
  padding: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.segmented {
  display: grid;
  grid-auto-columns: minmax(0, 1fr);
  grid-auto-flow: column;
  gap: 4px;
  padding: 4px;
  border-radius: var(--radius);
  background: var(--bg);
}

.segmented label {
  position: relative;
  display: block;
}

.segmented input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.segmented span {
  display: grid;
  place-items: center;
  min-height: 40px;
  padding: 4px 8px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.segmented input:hover + span {
  color: var(--text);
}

.segmented input:checked + span {
  background: var(--accent);
  color: var(--accent-ink);
}

.segmented input:focus-visible + span {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
}

.rules-intro {
  margin: 0 0 12px;
  color: var(--text);
}

.rules-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding-left: 22px;
  color: #cbd5e1;
}

.rules-list li::marker {
  color: var(--accent-bright);
  font-weight: 700;
}

.rules-list strong {
  color: var(--text);
}

.rules-terms {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: rgba(217, 119, 6, 0.1);
  color: var(--muted);
  font-size: 14px;
}

/* ---------------------------------------------------------------- small screens */

@media (max-width: 599px) {
  .pit .well {
    aspect-ratio: 1 / 1.6;
  }
}

@media (max-width: 480px) {
  .topbar {
    padding: 10px 12px 6px;
  }

  .app {
    gap: 10px;
    padding: 2px 10px 6px;
  }

  .table {
    gap: 8px;
  }

  .logo {
    width: 30px;
    height: 30px;
  }

  .btn {
    padding: 0 12px;
  }

  .btn .icon:not(.icon-keep) {
    display: none;
  }

  .topbar .btn .icon {
    display: none;
  }

  .player {
    min-height: 40px;
    padding: 5px 12px;
  }

  .player-score {
    font-size: 19px;
  }

  .chip {
    font-size: 12px;
  }
}

/* ---------------------------------------------------------------- motion */

@keyframes stone-drop {
  from {
    opacity: 0;
    transform: translateY(-80%) scale(1.3);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes flash {
  to {
    filter: brightness(1.35);
  }
}

@keyframes pulse {
  from {
    transform: scale(0.8);
    opacity: 0.6;
  }
  to {
    transform: scale(1.25);
    opacity: 1;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}