:root {
  --bg: #0b0c0f;
  --panel: rgba(255, 255, 255, 0.06);
  --panel2: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.66);
  --soft: rgba(255, 255, 255, 0.2);
  --accent: #7c5cff;
  --danger: #ff4d4d;
  --ok: #4be38b;
  --shadow: 0 16px 50px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fb;
    --panel: rgba(20, 25, 40, 0.05);
    --panel2: rgba(20, 25, 40, 0.06);
    --line: rgba(20, 25, 40, 0.12);
    --text: rgba(20, 25, 40, 0.92);
    --muted: rgba(20, 25, 40, 0.62);
    --soft: rgba(20, 25, 40, 0.22);
    --shadow: 0 16px 40px rgba(15, 18, 28, 0.12);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 14% 0%, rgba(124, 92, 255, 0.14), transparent 62%),
    radial-gradient(900px 700px at 92% 10%, rgba(75, 227, 139, 0.12), transparent 60%),
    var(--bg);
}

a {
  color: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 18px 18px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 12, 16, 0.55);
  backdrop-filter: blur(14px);
}

@media (prefers-color-scheme: light) {
  .topbar {
    background: rgba(246, 247, 251, 0.72);
  }
}

.brand .title {
  font-weight: 750;
  letter-spacing: -0.02em;
  font-size: 16px;
}

.brand .subtitle {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.wrap {
  max-width: 1100px;
  margin: 18px auto 50px;
  padding: 0 18px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 16px;
}

@media (max-width: 980px) {
  .wrap {
    grid-template-columns: 1fr;
  }
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-head {
  padding: 16px 16px 0;
}

.panel-head h2 {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-sub {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

.row {
  padding: 14px 16px 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 980px) {
  .row {
    grid-template-columns: 1fr;
  }
}

.field span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.field-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

input[type="text"] {
  flex: 1;
  min-width: 180px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel2);
  color: var(--text);
  outline: none;
}

input[type="text"]::placeholder {
  color: rgba(255, 255, 255, 0.38);
}

@media (prefers-color-scheme: light) {
  input[type="text"]::placeholder {
    color: rgba(20, 25, 40, 0.42);
  }
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel2);
  font-size: 13px;
  color: var(--muted);
  user-select: none;
}

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

.players {
  padding: 14px 16px 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 520px) {
  .players {
    grid-template-columns: 1fr;
  }
}

.player {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel2);
  padding: 12px 12px 10px;
  display: grid;
  gap: 10px;
  cursor: pointer;
}

.player-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

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

.player-meta {
  font-size: 12px;
  color: var(--muted);
}

.player-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 650;
  cursor: pointer;
  user-select: none;
}

.btn:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.btn:active {
  transform: translateY(1px);
}

.btn.primary {
  border-color: rgba(124, 92, 255, 0.42);
  background: rgba(124, 92, 255, 0.16);
}

.btn.danger {
  border-color: rgba(255, 77, 77, 0.46);
  background: rgba(255, 77, 77, 0.13);
}

.btn.small {
  padding: 7px 9px;
  border-radius: 10px;
  font-size: 12px;
}

.cards {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.card {
  width: 56px;
  height: 78px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 16px;
  letter-spacing: -0.02em;
  user-select: none;
}

.card.back {
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.25), rgba(75, 227, 139, 0.14));
  position: relative;
}

.card.back::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 10px;
  border: 1px dashed rgba(255, 255, 255, 0.25);
}

.card.red {
  color: #ff5e7a;
}

.card.black {
  color: rgba(255, 255, 255, 0.92);
}

@media (prefers-color-scheme: light) {
  .card.black {
    color: rgba(20, 25, 40, 0.92);
  }
}

.card.dim {
  color: rgba(255, 255, 255, 0.4);
}

@media (prefers-color-scheme: light) {
  .card.dim {
    color: rgba(20, 25, 40, 0.38);
  }
}

.table {
  padding: 16px;
  display: grid;
  gap: 14px;
}

.table-row {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 14px;
  align-items: start;
}

@media (max-width: 980px) {
  .table-row {
    grid-template-columns: 1fr;
  }
}

.stack .label,
.community .label,
.results .label {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}

.pile {
  display: grid;
  place-items: start;
  gap: 10px;
}

.hint {
  font-size: 12px;
  color: var(--muted);
}

.board-actions {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.results-body {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel2);
  padding: 12px 12px;
  color: var(--muted);
  min-height: 76px;
}

.results-body strong {
  color: var(--text);
}

.mono {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

.peek {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(15, 18, 24, 0.92);
  color: var(--text);
  box-shadow: var(--shadow);
  padding: 0;
  max-width: min(520px, calc(100vw - 24px));
}

@media (prefers-color-scheme: light) {
  .peek {
    background: rgba(246, 247, 251, 0.95);
  }
}

.peek::backdrop {
  background: rgba(0, 0, 0, 0.56);
}

.peek-inner {
  padding: 16px;
  display: grid;
  gap: 12px;
}

.peek-title {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.peek-cards {
  display: flex;
  gap: 10px;
}

.peek-actions {
  display: flex;
  justify-content: flex-end;
}

.peek-sub {
  color: var(--muted);
  font-size: 12px;
}