:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --ink: #1f2933;
  --muted: #6b7280;
  --line: #d8d2c4;
  --panel: #fffaf0;
  --table: #23614d;
  --table-dark: #174637;
  --red: #b42318;
  --black: #111827;
  --gold: #d99a2b;
  --blue: #2f5f98;
  --shadow: 0 18px 50px rgba(31, 41, 51, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 0%, rgba(217, 154, 43, 0.16), transparent 28rem),
    linear-gradient(135deg, #f7f3ea 0%, #e8efe9 100%);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.start-screen {
  align-items: center;
  background:
    radial-gradient(circle at 22% 12%, rgba(217, 154, 43, 0.22), transparent 24rem),
    rgba(244, 241, 234, 0.96);
  display: flex;
  inset: 0;
  justify-content: center;
  padding: 18px;
  position: fixed;
  z-index: 20;
}

.start-screen.hidden {
  display: none;
}

.start-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  max-width: 420px;
  padding: 22px;
  width: 100%;
}

.start-panel h2 {
  font-size: 26px;
  margin: 0 0 16px;
}

.start-options {
  display: grid;
  gap: 10px;
}

.start-choice {
  font-size: 18px;
  justify-content: center;
  min-height: 54px;
}

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  min-height: 40px;
  padding: 0 14px;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    border-color 0.15s ease;
}

button:hover:not(:disabled) {
  border-color: #9aa6b2;
  box-shadow: 0 8px 22px rgba(31, 41, 51, 0.1);
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

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

.app {
  display: grid;
  gap: 16px;
  margin: 0 auto;
  max-width: 1180px;
  min-height: 100vh;
  padding: 18px;
}

.topbar,
.player-area {
  background: rgba(255, 250, 240, 0.88);
  border: 1px solid rgba(216, 210, 196, 0.85);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 16px;
}

.topbar {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

h1 {
  font-size: 28px;
  letter-spacing: 0;
  line-height: 1.1;
  margin: 0 0 4px;
}

p {
  color: var(--muted);
  margin: 0;
}

.controls,
.actions,
.actionbar {
  align-items: center;
  display: flex;
  gap: 10px;
}

.debug-toggle {
  align-items: center;
  color: var(--muted);
  display: inline-flex;
  font-size: 14px;
  gap: 7px;
  min-height: 40px;
  white-space: nowrap;
}

.debug-toggle input {
  accent-color: var(--blue);
  height: 16px;
  width: 16px;
}

.segmented {
  background: #ebe4d6;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  gap: 2px;
  padding: 3px;
}

.segmented button {
  background: transparent;
  border-color: transparent;
  min-height: 34px;
}

.segmented .active {
  background: #fff;
  border-color: var(--line);
  box-shadow: 0 4px 12px rgba(31, 41, 51, 0.08);
}

.table {
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.06), transparent 38%),
    var(--table);
  border: 10px solid var(--table-dark);
  border-radius: 28px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-rows: auto minmax(96px, auto) 1fr auto;
  min-height: 420px;
  overflow: hidden;
  padding: 18px;
}

.scoreboard {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  margin-bottom: 12px;
}

.score {
  background: rgba(255, 250, 240, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 8px;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  min-height: 42px;
  padding: 10px 12px;
}

.score.active {
  outline: 3px solid rgba(217, 154, 43, 0.8);
}

.score span {
  color: var(--muted);
}

.score strong {
  color: var(--blue);
}

.opponents {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.seat {
  align-items: center;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  color: #fff;
  display: flex;
  justify-content: space-between;
  min-height: 72px;
  padding: 12px;
}

.seat.active {
  outline: 3px solid rgba(217, 154, 43, 0.8);
}

.seat small {
  color: rgba(255, 255, 255, 0.78);
  display: block;
  margin-top: 4px;
}

.back-cards {
  display: flex;
  min-width: 70px;
}

.npc-faceup {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: flex-end;
  max-width: 230px;
}

.npc-faceup .card {
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(31, 41, 51, 0.16);
  flex-basis: 42px;
  height: 58px;
  padding: 4px;
}

.npc-faceup .rank {
  font-size: 12px;
}

.npc-faceup .suit {
  font-size: 16px;
}

.npc-faceup .corner {
  font-size: 10px;
}

.mini-back {
  background: linear-gradient(135deg, #f6c35a, #a64232);
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 5px;
  height: 38px;
  margin-left: -18px;
  width: 28px;
}

.mini-back:first-child {
  margin-left: 0;
}

.center {
  align-items: center;
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(84px, 0.6fr) minmax(260px, 1.8fr) minmax(84px, 0.6fr);
  justify-items: center;
}

.pile,
.last-play {
  background: rgba(255, 250, 240, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
  min-width: 94px;
  padding: 14px;
  text-align: center;
}

.pile span,
.last-play span {
  color: var(--muted);
  display: block;
  font-size: 13px;
  margin-bottom: 6px;
}

.pile strong {
  font-size: 28px;
}

.last-play {
  min-height: 142px;
  min-width: min(520px, 100%);
}

.played-cards,
.hand {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.played-cards.empty {
  color: var(--muted);
  min-height: 74px;
}

.last-play small {
  color: var(--muted);
  display: block;
  margin-top: 8px;
}

.message {
  align-self: end;
  background: rgba(0, 0, 0, 0.22);
  border-radius: 8px;
  color: #fff;
  min-height: 42px;
  padding: 11px 14px;
  text-align: center;
}

.actionbar {
  justify-content: space-between;
  margin-bottom: 12px;
}

#selectionHint {
  color: var(--muted);
  display: block;
  font-size: 14px;
  margin-top: 3px;
}

.hand {
  justify-content: flex-start;
  min-height: 122px;
}

.card {
  aspect-ratio: 5 / 7;
  background: #fff;
  border: 1px solid #cfd5dd;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(31, 41, 51, 0.16);
  color: var(--black);
  display: grid;
  flex: 0 0 72px;
  grid-template-rows: auto 1fr auto;
  height: 100px;
  padding: 7px;
  position: relative;
  user-select: none;
}

button.card {
  min-height: 100px;
}

.card.red {
  color: var(--red);
}

.card.joker {
  background: linear-gradient(145deg, #fff, #f8ead0);
  color: #713f12;
}

.card.selected {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(217, 154, 43, 0.45), 0 12px 20px rgba(31, 41, 51, 0.2);
  transform: translateY(-12px);
}

.rank {
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
}

.suit {
  align-self: center;
  font-size: 30px;
  justify-self: center;
}

.corner {
  align-self: end;
  font-size: 16px;
  justify-self: end;
}

.dim-card {
  filter: saturate(0.8);
  opacity: 0.72;
}

@media (max-width: 760px) {
  .app {
    padding: 10px;
  }

  .topbar,
  .actionbar,
  .controls {
    align-items: stretch;
    flex-direction: column;
  }

  .center {
    grid-template-columns: 1fr;
  }

  .card {
    flex-basis: 58px;
    height: 82px;
    padding: 6px;
  }

  button.card {
    min-height: 82px;
  }

  .suit {
    font-size: 24px;
  }
}