:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-hover: #26354d;
  --line: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #b45309;
  --accent-hover: #c2610c;
  --glow: #fbbf24;
  --radius: 12px;
  --shadow: 0 18px 40px rgba(2, 6, 23, 0.55);
  --shadow-soft: 0 4px 14px rgba(2, 6, 23, 0.35);
  --speed: 180ms;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}

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

[hidden] {
  display: none !important;
}

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(1200px 600px at 50% -10%, #1b2740 0%, var(--bg) 60%) fixed, var(--bg);
  color: var(--text);
  font: 16px/1.4 var(--font);
}

button {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--glow);
  outline-offset: 2px;
}

/* Header */

.topbar {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 4px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-mark {
  width: 28px;
  height: 28px;
  flex: none;
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

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

/* Buttons */

.btn {
  min-height: 44px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: background-color var(--speed) ease, border-color var(--speed) ease, opacity var(--speed) ease,
    transform var(--speed) ease;
}

.btn:hover:not(:disabled) {
  background: var(--surface-hover);
}

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

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

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

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

.topbar .btn {
  min-height: 40px;
}

.btn-square {
  min-width: 40px;
  padding: 0 10px;
}

/* Game layout: stacked on phones, board with a side panel on wider screens */

.game {
  flex: 1 0 auto;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 12px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "players"
    "board"
    "status"
    "controls"
    "hints";
  align-content: start;
  gap: 4px;
}

.players {
  grid-area: players;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.player {
  min-height: 32px;
  padding: 4px 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 2px solid transparent;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--speed) ease, box-shadow var(--speed) ease;
}

.player.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.25), var(--shadow-soft);
}

.player.is-winner {
  border-color: var(--glow);
}

.swatch {
  width: 16px;
  height: 16px;
  flex: none;
  border-radius: 50%;
}

.swatch-white {
  background: radial-gradient(circle at 38% 34%, #fffdf8, #f1e5cd 60%, #d6c19c);
  border: 1px solid #9a7d55;
}

.swatch-black {
  background: radial-gradient(circle at 38% 34%, #6a4b37, #36241a 60%, #1a110b);
  border: 1px solid #e8d3ad;
}

.player-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.875rem;
  font-weight: 600;
}

.player-level {
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.75rem;
  white-space: nowrap;
}

.player-pips {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.board-wrap {
  --board-w: 796;
  --board-h: 576;
  /* Height of everything above and below the board up to the buttons (header 48, players 32, status 34,
     buttons 44, three 4px gaps), so on a phone the board gets all the rest and never pushes the controls
     off screen. The footer may sit below the fold; the board's points are wider for it. */
  --chrome: 170px;
  --avail-h: calc(100vh - var(--chrome));
  grid-area: board;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-width: 0;
}

@supports (height: 100dvh) {
  .board-wrap {
    --avail-h: calc(100dvh - var(--chrome));
  }
}

.board {
  display: block;
  width: 100%;
  height: auto;
  min-width: 0;
  max-width: max(240px, calc(var(--avail-h) * var(--board-w) / var(--board-h)));
  aspect-ratio: var(--board-w) / var(--board-h);
  border-radius: 8px;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

.board:focus {
  outline: none;
}

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

.board.is-pointing {
  cursor: pointer;
}

.board.is-dragging {
  cursor: grabbing;
}

.status {
  grid-area: status;
  margin: 0;
  min-height: 2.4em;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.875rem;
  line-height: 1.2;
}

.controls {
  grid-area: controls;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: 8px;
}

.hints {
  grid-area: hints;
  padding: 12px 14px;
  background: var(--surface);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.8125rem;
}

.hints-title {
  margin: 0 0 4px;
  color: var(--text);
  font-size: 0.875rem;
}

.hints-text {
  margin: 0;
}

@media (max-width: 640px), (hover: none), (max-height: 480px) {
  .hints {
    display: none;
  }

  /* No empty row (and gap) for the hidden hints. */
  .game {
    grid-template-areas:
      "players"
      "board"
      "status"
      "controls";
  }
}

@media (max-width: 480px) {
  .player-level {
    display: none;
  }

  .game {
    padding: 0 8px;
  }
}

/* 320 px phones: a tighter chip, so "Computer" and "Bilgisayar" fit beside the pip count. */
@media (max-width: 359px) {
  .player {
    gap: 4px;
    padding: 4px 6px;
  }

  .swatch {
    width: 12px;
    height: 12px;
  }

  .player-name {
    font-size: 0.8125rem;
  }

  .player-pips {
    font-size: 0.75rem;
  }
}

@media (min-width: 900px), (orientation: landscape) and (min-width: 560px) {
  .topbar {
    padding: 8px 24px;
  }

  .game {
    /* At least 240px, so the longest name, the level and the pip count fit on one line. */
    grid-template-columns: minmax(0, 1fr) clamp(240px, 24vw, 280px);
    grid-template-rows: auto auto auto auto 1fr;
    grid-template-areas:
      "board players"
      "board status"
      "board controls"
      "board hints"
      "board .";
    column-gap: 24px;
    row-gap: 12px;
    padding: 8px 24px 12px;
  }

  .players {
    grid-template-columns: minmax(0, 1fr);
  }

  .player {
    min-height: 48px;
    padding: 8px 12px;
  }

  .board-wrap {
    --chrome: 128px;
  }

  .status {
    min-height: 4.2em;
    padding: 10px 14px;
    justify-content: flex-start;
    text-align: left;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
  }

  .controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Result banner over the board */

.result {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(86%, 340px);
  padding: 20px;
  transform: translate(-50%, -50%);
  text-align: center;
  background: rgba(15, 23, 42, 0.94);
  border: 1px solid rgba(251, 191, 36, 0.4);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  animation: pop 220ms ease-out;
}

.result-title {
  margin: 0 0 4px;
  font-size: 1.5rem;
  font-weight: 700;
}

.result-detail {
  margin: 0 0 16px;
  color: var(--muted);
}

/* Footer */

.footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  color: var(--muted);
  font-size: 0.875rem;
}

.footer a {
  min-height: 40px;
  padding: 0 4px;
  display: inline-flex;
  align-items: center;
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 3px;
  transition: color var(--speed) ease;
}

.footer a:hover {
  color: var(--glow);
}

/* New game dialog */

.dialog {
  width: min(92vw, 380px);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

.dialog::backdrop {
  background: rgba(2, 6, 23, 0.7);
}

.dialog[open] {
  animation: rise 200ms ease-out;
}

.dialog-form {
  padding: 20px;
  display: grid;
  gap: 16px;
}

.dialog-title {
  margin: 0;
  font-size: 1.25rem;
}

.field {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  transition: opacity var(--speed) ease;
}

.field:disabled {
  opacity: 0.4;
}

.field legend {
  margin-bottom: 8px;
  padding: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 4px;
  background: var(--bg);
  border-radius: var(--radius);
}

.segment {
  position: relative;
}

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

.segment span {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  color: var(--muted);
  font-weight: 600;
  transition: background-color var(--speed) ease, color var(--speed) ease;
}

.segment input:checked + span {
  background: var(--accent);
  color: #fff;
}

.segment input:focus-visible + span {
  outline: 3px solid var(--glow);
  outline-offset: 2px;
}

.field:disabled .segment input {
  cursor: not-allowed;
}

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

/* Board drawing (SVG classes set by src/view.js) */

.board .board-frame {
  fill: url(#tv-wood);
  stroke: #1f1209;
  stroke-width: 2;
}

.board .board-field {
  fill: url(#tv-field);
}

.board .board-edge {
  fill: none;
  stroke: rgba(0, 0, 0, 0.4);
  stroke-width: 2;
}

.board .board-bar {
  fill: url(#tv-wood);
  stroke: rgba(0, 0, 0, 0.35);
  stroke-width: 1.5;
}

.board .board-tray {
  fill: #24150b;
  stroke: rgba(0, 0, 0, 0.55);
  stroke-width: 1.5;
}

.board .point {
  stroke: rgba(0, 0, 0, 0.18);
  stroke-width: 1;
}

.board .tone-0 {
  fill: var(--accent);
}

.board .tone-1 {
  fill: #e8d3ad;
}

.board .layer-checkers,
.board .layer-dice,
.board .layer-float {
  filter: url(#tv-shadow);
}

.board .layer-hints,
.board .layer-marks,
.board .layer-float {
  pointer-events: none;
}

.board .checker-body {
  stroke-width: 1.5;
}

.board .is-white .checker-body {
  fill: url(#tv-white);
  stroke: #9a7d55;
}

.board .is-black .checker-body {
  fill: url(#tv-black);
  stroke: #0b0603;
}

.board .checker-ring {
  fill: none;
  stroke-width: 1.5;
}

.board .is-white .checker-ring {
  stroke: rgba(120, 88, 50, 0.35);
}

.board .is-black .checker-ring {
  stroke: rgba(255, 230, 200, 0.18);
}

.board .checker-count {
  font: 700 22px var(--font);
  pointer-events: none;
}

.board .is-white .checker-count {
  fill: #3a2213;
}

.board .is-black .checker-count {
  fill: #f6ecd9;
}

.board .checker.is-lifted {
  opacity: 0.3;
}

.board .checker.is-dragging .checker-body {
  stroke: var(--glow);
  stroke-width: 3;
}

.board .sliver.is-white {
  fill: #efe3cb;
  stroke: #9a7d55;
}

.board .sliver.is-black {
  fill: #2b1b12;
  stroke: #7a5638;
}

.board .die-face {
  fill: url(#tv-die);
  stroke: #c9b48f;
  stroke-width: 1.5;
}

.board .die-pip {
  fill: #2a190e;
}

.board .die.is-used {
  opacity: 0.35;
}

.board .target {
  fill: rgba(251, 191, 36, 0.32);
  stroke: #fde68a;
  stroke-width: 2;
  stroke-dasharray: 6 5;
  transition: fill var(--speed) ease;
}

.board .target.is-hit {
  fill: rgba(249, 115, 22, 0.38);
  stroke: #fed7aa;
}

.board .target.is-hover {
  fill: rgba(251, 191, 36, 0.6);
}

.board .ring-movable {
  fill: none;
  stroke: var(--glow);
  stroke-width: 3;
  animation: pulse 1.6s ease-in-out infinite;
}

.board .ring-selected {
  fill: rgba(253, 230, 138, 0.12);
  stroke: #fde68a;
  stroke-width: 5;
}

.board .ring-landing {
  fill: rgba(253, 230, 138, 0.2);
  stroke: #fde68a;
  stroke-width: 3;
  stroke-dasharray: 7 5;
}

.board .ring-landing.is-hit {
  fill: rgba(249, 115, 22, 0.25);
  stroke: #fdba74;
}

.board .ring-arrival {
  fill: none;
  stroke: #f59e0b;
  stroke-width: 3;
}

.board .trail-ghost {
  fill: rgba(0, 0, 0, 0.2);
  stroke: rgba(253, 230, 138, 0.75);
  stroke-width: 2;
  stroke-dasharray: 5 4;
}

.board .cursor {
  fill: rgba(226, 232, 240, 0.08);
  stroke: var(--text);
  stroke-width: 3;
  stroke-dasharray: 8 6;
}

@keyframes pulse {
  0%,
  100% {
    stroke-opacity: 0.95;
  }
  50% {
    stroke-opacity: 0.35;
  }
}

@keyframes pop {
  from {
    opacity: 0;
    transform: translate(-50%, -46%) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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