/* Backgammon: a walnut-and-cream board that works in light and dark. */

:root {
  --board-frame: #6b4326;
  --board-frame-edge: #432712;
  --felt: #8a5a35;
  --point-a: #e8d3ab;
  --point-b: #b97a4a;
  --bar-color: #5a3a20;
  --off-color: rgba(0, 0, 0, 0.15);
  --checker-0: #f4ecd8;
  --checker-0-edge: #b7a482;
  --checker-1: #2b2118;
  --checker-1-edge: #000000;
  --die: #fbf7ee;
  --die-dot: #2b2118;
  --target: #3fb77a;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --board-frame: #2c1c10;
    --board-frame-edge: #180f08;
    --felt: #3d2a1a;
    --point-a: #caa877;
    --point-b: #5b3a23;
    --bar-color: #1c120a;
    --off-color: rgba(0, 0, 0, 0.35);
    --checker-0: #efe6d2;
    --checker-0-edge: #a5947269;
    --checker-1: #17130f;
    --checker-1-edge: #000000;
    --die: #efe6d2;
    --die-dot: #17130f;
  }
}
:root[data-theme='dark'] {
  --board-frame: #2c1c10;
  --board-frame-edge: #180f08;
  --felt: #3d2a1a;
  --point-a: #caa877;
  --point-b: #5b3a23;
  --bar-color: #1c120a;
  --off-color: rgba(0, 0, 0, 0.35);
  --checker-0: #efe6d2;
  --checker-0-edge: #a59472;
  --checker-1: #17130f;
  --checker-1-edge: #000000;
  --die: #efe6d2;
  --die-dot: #17130f;
}

/* Hallows (autumn): a moonlit board of deep plum and candlelight gold. */
:root[data-theme='hallows'] {
  --board-frame: #241732;
  --board-frame-edge: #120a1c;
  --felt: #2c1e40;
  --point-a: #cbb37a;
  --point-b: #4a3160;
  --bar-color: #150d20;
  --off-color: rgba(0, 0, 0, 0.35);
  --checker-0: #f4e8cc;
  --checker-0-edge: #b8a06a;
  --checker-1: #1a1024;
  --checker-1-edge: #000000;
  --die: #f4e8cc;
  --die-dot: #1a1024;
  --target: #e8b04a;
}
:root[data-theme='hallows'] .title h1 {
  font-family: var(--font-display);
  letter-spacing: 0;
}
:root[data-theme='hallows'] .hw-candle {
  display: none; /* they would drift behind the topbar, dice and board */
}

body {
  min-height: var(--app-height);
  padding: var(--safe-top) var(--safe-right) var(--safe-bottom) var(--safe-left);
}
#announce {
  margin: 0;
  top: 0;
}
.app {
  display: flex;
  flex-direction: column;
  height: calc(var(--app-height) - var(--safe-top) - var(--safe-bottom));
  min-height: 480px;
  max-width: 780px;
  margin: 0 auto;
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px 4px;
  flex-wrap: wrap;
}
.title h1 {
  font-size: 1.3rem;
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.title small {
  color: var(--text-muted);
  font-size: 0.82rem;
}
.players {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.player {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 8px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  min-width: 0;
  transition: box-shadow 0.2s ease;
}
.player.turn {
  box-shadow: 0 0 0 2px var(--checker), 0 6px 16px -8px var(--checker);
}
.player.p0 {
  --checker: var(--checker-0-edge);
}
.player.p1 {
  --checker: var(--checker-1-edge);
}
.player-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  flex: none;
  background: radial-gradient(circle at 38% 32%, #fff 0, var(--dot) 40%, var(--dot) 100%);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}
.player.p0 .player-dot {
  --dot: var(--checker-0);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--checker-0-edge) inset;
}
.player.p1 .player-dot {
  --dot: var(--checker-1);
}
.player-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}
.player-text b {
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 9em;
}
.player-text small {
  color: var(--text-muted);
  font-size: 0.76rem;
  white-space: nowrap;
}

.status {
  margin: 4px 16px 0;
  min-height: 2.4em;
  font-size: 0.92rem;
  color: var(--text-muted);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Dice ---------- */

.dice-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 2px 16px 6px;
  min-height: 54px;
}
.dice {
  display: flex;
  gap: 8px;
}
.die {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  background: var(--die);
  box-shadow: 0 3px 8px -2px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  padding: 6px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.die.used {
  opacity: 0.35;
  transform: scale(0.9);
}
.die i {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--die-dot);
  align-self: center;
  justify-self: center;
}
.roll-btn {
  min-width: 96px;
}
.roll-btn[hidden] {
  display: none;
}

/* ---------- Board ---------- */

.stage {
  flex: 1 1 0;
  display: grid;
  place-items: center;
  padding: 4px 12px;
  min-height: 240px;
  container-type: size;
}
.board-wrap {
  width: min(100cqw, 780px, 100cqh * 1.603);
  aspect-ratio: 1218 / 760;
  position: relative;
}
.board {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}
.board * {
  pointer-events: none;
}
.board .hit {
  fill: transparent;
  pointer-events: auto;
}
.board.interactive .hit {
  cursor: pointer;
}
.frame {
  fill: var(--board-frame);
  stroke: var(--board-frame-edge);
  stroke-width: 3;
  filter: drop-shadow(0 12px 20px rgba(20, 10, 0, 0.3));
}
.felt {
  fill: var(--felt);
}
.bar {
  fill: var(--bar-color);
}
.off-tray {
  fill: var(--off-color);
}
.centreline {
  stroke: rgba(0, 0, 0, 0.25);
  stroke-width: 1.5;
}
.point.a {
  fill: var(--point-a);
}
.point.b {
  fill: var(--point-b);
}
.point.home {
  opacity: 0.96;
}

.checker-body {
  fill: var(--checker-0);
  stroke: var(--checker-0-edge);
  stroke-width: 2;
  filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.35));
}
.checker.p1 .checker-body {
  fill: var(--checker-1);
  stroke: var(--checker-1-edge);
}
.checker-count {
  fill: var(--checker-1);
  font-size: 26px;
  font-weight: 800;
  pointer-events: none;
}
.checker.p1 .checker-count {
  fill: var(--checker-0);
}
.checker.selected .checker-body {
  stroke: var(--target);
  stroke-width: 4;
}
.checker.movable .checker-body {
  animation: glow 1.6s ease-in-out infinite;
}
@keyframes glow {
  50% {
    stroke: var(--target);
    stroke-width: 3;
  }
}
@media (prefers-reduced-motion: reduce) {
  .checker.movable .checker-body {
    animation: none;
    stroke: var(--target);
    stroke-width: 3;
  }
}

.target {
  fill: var(--target);
  opacity: 0.6;
  pointer-events: none;
  animation: breathe 1.6s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}
@keyframes breathe {
  50% {
    opacity: 0.95;
    transform: scale(1.15);
  }
}

@media (prefers-reduced-motion: reduce) {
  .target {
    animation: none;
  }
}

/* ---------- Toolbar ---------- */

.toolbar {
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 8px 8px 12px;
}
.tool {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  min-width: 58px;
  min-height: 52px;
  padding: 6px 8px;
  border-radius: 14px;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
}
.tool svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.tool:hover:not(:disabled) {
  background: var(--accent-soft);
}
.tool:disabled {
  opacity: 0.38;
  cursor: default;
}
.tool:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 1px;
}

/* ---------- Dialogs ---------- */

.setup .field[hidden] {
  display: none;
}
.small {
  font-size: 0.85rem;
}
.rules ul {
  padding-left: 1.2em;
}
.rules li {
  margin: 6px 0;
}
.result {
  display: flex;
  align-items: center;
  gap: 16px;
}
.result-checker {
  width: 52px;
  height: 52px;
  flex: none;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 32%, #fff 0, var(--c) 32%, var(--c) 100%);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--c) 25%, transparent), 0 8px 20px -6px var(--c);
}

/* Landscape phones: players and controls beside the board. */
@media (orientation: landscape) and (max-height: 560px) {
  .app {
    max-width: none;
    display: grid;
    grid-template-columns: minmax(180px, 1fr) auto;
    grid-template-rows: min-content min-content min-content 1fr;
    column-gap: 12px;
  }
  .topbar {
    grid-column: 1;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    align-self: start;
  }
  .players {
    justify-content: flex-start;
  }
  .status,
  .dice-row {
    grid-column: 1;
  }
  .toolbar {
    grid-column: 1;
    flex-wrap: wrap;
    align-self: end;
  }
  .app {
    min-height: 0;
  }
  .stage {
    grid-column: 2;
    grid-row: 1 / span 4;
    container-type: normal;
    min-height: 0;
  }
  .board-wrap {
    width: calc((var(--app-height) - var(--safe-top) - var(--safe-bottom) - 16px) * 1.603);
    max-width: calc(100vw - 220px);
  }
}