:root {
  --bg-deep: #19100b;
  --bg-mid: #3c2315;
  --panel: rgba(253, 244, 232, 0.96);
  --panel-soft: rgba(255, 248, 239, 0.9);
  --ink: #241912;
  --muted: #6c5748;
  --line: rgba(50, 30, 18, 0.14);
  --light-square: #ead9be;
  --dark-square: #8a5b38;
  --dark-square-deep: #61391f;
  --white-piece: #fff6e7;
  --white-piece-edge: #d9c2a0;
  --black-piece: #32221a;
  --black-piece-edge: #0d0603;
  --gold: #d9a84a;
  --amber: #cf7f30;
  --shadow: 0 22px 52px rgba(7, 3, 1, 0.32);
  --cell-size: clamp(42px, 7vw, 76px);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 12%, rgba(217, 168, 74, 0.14), transparent 24%),
    radial-gradient(circle at 86% 10%, rgba(255, 246, 231, 0.12), transparent 18%),
    linear-gradient(150deg, var(--bg-deep), var(--bg-mid));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.025), transparent 28%),
    linear-gradient(rgba(255, 255, 255, 0.014) 0, rgba(255, 255, 255, 0.014) 1px, transparent 1px, transparent 76px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.014) 0, rgba(255, 255, 255, 0.014) 1px, transparent 1px, transparent 76px);
  pointer-events: none;
  opacity: 0.35;
}

.dame-app {
  width: min(1220px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 40px;
}

.dame-topbar,
.dame-controls-panel,
.board-panel,
.player-card,
.rules-card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.dame-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: 24px;
}

.dame-topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.dame-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--ink);
}

.dame-brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--gold), var(--amber));
  color: #23150f;
  font-weight: 900;
}

.dame-brand-copy {
  display: grid;
  gap: 2px;
}

.dame-brand-copy strong {
  font-size: 1.04rem;
}

.dame-brand-copy span {
  color: var(--muted);
  font-size: 0.92rem;
}

.dame-return,
.dame-support,
.action-button,
.board-cell {
  font: inherit;
}

.dame-return,
.dame-support,
.action-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid rgba(36, 25, 18, 0.12);
  border-radius: 999px;
  background: linear-gradient(145deg, #fffaf3, #ecdcc6);
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease;
}

.action-button.primary {
  background: linear-gradient(145deg, var(--gold), var(--amber));
  color: #23150f;
}

.dame-support {
  background: linear-gradient(145deg, #ffdc42, #f0b90a);
  color: #23150f;
}

.dame-return:hover,
.dame-return:focus-visible,
.action-button:hover,
.action-button:focus-visible,
.board-cell.dark:hover,
.board-cell.dark:focus-visible {
  transform: translateY(-1px);
}

.action-button:disabled,
.board-cell:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.dame-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: 20px;
  align-items: start;
  padding: 28px 0 18px;
}

.eyebrow {
  margin: 0 0 12px;
  color: rgba(255, 246, 231, 0.76);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.dame-copy h1,
.status-copy h2,
.rules-card h3,
.result-overlay h2 {
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
}

.dame-copy h1 {
  margin: 0 0 14px;
  max-width: 11ch;
  color: #fff7eb;
  font-size: clamp(2.3rem, 5vw, 4.6rem);
  line-height: 0.95;
}

.dame-copy p:last-child {
  margin: 0;
  max-width: 60ch;
  color: rgba(255, 244, 231, 0.84);
  line-height: 1.65;
}

.dame-controls-panel {
  border-radius: 30px;
  padding: 22px;
}

.status-copy h2 {
  margin: 0;
  font-size: clamp(1.26rem, 2.4vw, 1.82rem);
  line-height: 1.12;
}

.notice-text,
.mode-hint {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.setup-panel {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.setup-group {
  display: grid;
  gap: 12px;
}

.setup-label {
  margin: 0;
  color: #584635;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mode-options {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.choice-pill {
  position: relative;
  display: inline-flex;
  min-height: 48px;
  align-items: center;
}

.choice-pill input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice-pill span {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 16px;
  border: 1px solid rgba(36, 25, 18, 0.12);
  border-radius: 999px;
  background: #fbf4ea;
  color: #4f3f2f;
  font-weight: 800;
  cursor: pointer;
}

.choice-pill input:checked + span {
  background: linear-gradient(145deg, rgba(217, 168, 74, 0.2), rgba(255, 246, 231, 0.94));
  border-color: rgba(207, 127, 48, 0.28);
  color: #3a281a;
}

.difficulty-field {
  display: grid;
  gap: 10px;
}

.difficulty-select {
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid rgba(36, 25, 18, 0.12);
  border-radius: 16px;
  background: #fbf4ea;
  color: var(--ink);
  font: inherit;
  font-weight: 700;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.metric-card {
  padding: 14px;
  border: 1px solid rgba(36, 25, 18, 0.1);
  border-radius: 20px;
  background: var(--panel-soft);
}

.metric-card span {
  display: block;
  margin-bottom: 6px;
  color: #786452;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-card strong {
  font-size: 1.28rem;
}

.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.dame-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 20px;
  align-items: start;
}

.board-panel {
  position: relative;
  border-radius: 34px;
  padding: 20px;
  background:
    radial-gradient(circle at top, rgba(255, 246, 231, 0.18), transparent 24%),
    linear-gradient(155deg, #4b2d1a, #2d170f);
  overflow: hidden;
}

.board-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(8, var(--cell-size));
  gap: 0;
  width: max-content;
  max-width: 100%;
  margin: 0 auto;
  padding: 12px;
  border-radius: 28px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), transparent 32%),
    linear-gradient(145deg, #8b5a36, #5c341f);
  box-shadow:
    inset 0 0 0 2px rgba(255, 255, 255, 0.08),
    inset 0 -8px 14px rgba(24, 12, 6, 0.24);
}

.board-cell {
  position: relative;
  width: var(--cell-size);
  height: var(--cell-size);
  border: 0;
  padding: 0;
  background: transparent;
}

.board-cell.light {
  background: linear-gradient(145deg, var(--light-square), #e1cdaf);
}

.board-cell.dark {
  background: linear-gradient(145deg, var(--dark-square), var(--dark-square-deep));
}

.board-cell.dark.selectable::before,
.board-cell.dark.target::before,
.board-cell.dark.last-path::after,
.board-cell.dark.last-captured::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 14px;
}

.board-cell.dark.selectable::before {
  border: 3px solid rgba(255, 246, 231, 0.76);
}

.board-cell.dark.selected::before {
  border: 4px solid rgba(217, 168, 74, 0.92);
  box-shadow: 0 0 0 3px rgba(36, 25, 18, 0.34) inset;
}

.board-cell.dark.target::before {
  inset: calc(var(--cell-size) * 0.32);
  border-radius: 50%;
  background: rgba(255, 246, 231, 0.78);
}

.board-cell.dark.last-path::after {
  border: 3px solid rgba(217, 168, 74, 0.9);
}

.board-cell.dark.last-captured::after {
  border: 3px dashed rgba(255, 246, 231, 0.72);
  inset: 14px;
}

.piece {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--cell-size) * 0.72);
  height: calc(var(--cell-size) * 0.72);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: clamp(0.86rem, 1.8vw, 1.1rem);
  font-weight: 900;
  box-shadow:
    inset 0 -6px 10px rgba(0, 0, 0, 0.16),
    0 8px 14px rgba(0, 0, 0, 0.14);
}

.piece.white {
  background:
    radial-gradient(circle at 34% 28%, #ffffff 0 18%, rgba(255, 255, 255, 0.84) 18%, transparent 19%),
    radial-gradient(circle at 34% 28%, var(--white-piece) 0, #efe0ca 44%, var(--white-piece-edge) 100%);
  color: #5e482c;
}

.piece.black {
  background:
    radial-gradient(circle at 34% 28%, #8c6f58 0 15%, rgba(140, 111, 88, 0.4) 15%, transparent 16%),
    radial-gradient(circle at 34% 28%, #4d3728 0, var(--black-piece) 46%, var(--black-piece-edge) 100%);
  color: #f6ead7;
}

.piece.king::after {
  content: "D";
}

.result-overlay {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(92%, 420px);
  padding: 22px 20px 18px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 249, 241, 0.96), rgba(253, 244, 232, 0.98)),
    var(--panel);
  text-align: center;
  box-shadow: 0 22px 48px rgba(12, 5, 2, 0.36);
  z-index: 4;
}

.result-overlay[hidden] {
  display: none;
}

.overlay-kicker {
  margin: 0 0 6px;
  color: #7c654f;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.result-overlay h2 {
  margin: 0 0 10px;
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  line-height: 1;
}

.overlay-message {
  margin: 0 auto;
  max-width: 30ch;
  color: var(--muted);
  line-height: 1.58;
}

.overlay-stats,
.overlay-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.overlay-stats span {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  background: #f4e9da;
  color: #594537;
  font-weight: 700;
}

.dame-sidebar {
  display: grid;
  gap: 16px;
}

.player-card,
.rules-card {
  border-radius: 28px;
  padding: 20px;
}

.player-card.active {
  box-shadow:
    var(--shadow),
    0 0 0 2px rgba(217, 168, 74, 0.24);
}

.player-card.winner {
  box-shadow:
    var(--shadow),
    0 0 0 2px rgba(255, 246, 231, 0.28);
}

.player-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.player-piece {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: block;
  flex: 0 0 auto;
}

.piece-white {
  background:
    radial-gradient(circle at 34% 28%, #ffffff 0 18%, rgba(255, 255, 255, 0.84) 18%, transparent 19%),
    radial-gradient(circle at 34% 28%, var(--white-piece) 0, #efe0ca 44%, var(--white-piece-edge) 100%);
}

.piece-black {
  background:
    radial-gradient(circle at 34% 28%, #8c6f58 0 15%, rgba(140, 111, 88, 0.4) 15%, transparent 16%),
    radial-gradient(circle at 34% 28%, #4d3728 0, var(--black-piece) 46%, var(--black-piece-edge) 100%);
}

.player-name {
  margin: 0 0 4px;
  font-size: 1.22rem;
  font-weight: 800;
}

.player-role {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.player-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0 0;
}

.player-stats div {
  padding: 14px;
  border-radius: 18px;
  background: rgba(246, 236, 221, 0.74);
}

.player-stats dt {
  color: #705a49;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.player-stats dd {
  margin: 8px 0 0;
  font-size: 1.25rem;
  font-weight: 800;
}

.rules-card h3 {
  margin: 0 0 12px;
  font-size: 1.5rem;
}

.rules-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.55;
  display: grid;
  gap: 10px;
}

@media (max-width: 1080px) {
  .dame-hero,
  .dame-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .dame-app {
    width: min(100% - 18px, 920px);
    padding: 18px 0 28px;
  }

  .dame-topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .dame-copy h1 {
    max-width: none;
  }

  .dame-topbar-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .mode-options,
  .action-row,
  .overlay-actions {
    flex-direction: column;
  }

  .metric-grid,
  .player-stats {
    grid-template-columns: 1fr;
  }

  .dame-return,
  .dame-support,
  .action-button,
  .choice-pill,
  .choice-pill span {
    width: 100%;
  }
}

@media (max-width: 560px) {
  :root {
    --cell-size: clamp(34px, 10vw, 48px);
  }

  .board-panel {
    padding: 14px;
  }

  .board-grid {
    padding: 8px;
  }

  .result-overlay {
    width: calc(100% - 10px);
    padding: 18px 14px 14px;
  }
}