:root {
  --bg: #0b0f17;
  --bg-2: #0f1622;
  --surface: #151d2c;
  --surface-2: #1b2435;
  --border: #263348;
  --border-soft: #1d2736;
  --text: #e7edf6;
  --muted: #8b98ad;
  --accent: #6c8cff;
  --accent-2: #4bd6c7;
  --gold: #f5c96b;
  --danger: #ff6b7a;
  --ok: #4bd6a3;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  --grad: linear-gradient(135deg, #6c8cff 0%, #4bd6c7 100%);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overscroll-behavior-y: none;
}

body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(108, 140, 255, 0.14), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(75, 214, 199, 0.10), transparent 55%),
    var(--bg);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 16px;
  background: rgba(11, 15, 23, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.brand-mark {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: var(--grad);
  color: #08101c;
  font-size: 17px;
  font-weight: 900;
}
.brand-sep { color: var(--muted); font-weight: 400; }
.brand-name { font-size: 17px; }
.topbar-hint { font-size: 12px; color: var(--muted); letter-spacing: 0.3px; }

/* ---------- 布局 ---------- */
.app { padding: 18px 16px calc(24px + env(safe-area-inset-bottom)); max-width: 720px; margin: 0 auto; }

.view-head { margin: 4px 0 16px; }
.view-title { font-size: 22px; font-weight: 700; margin: 0; }
.view-sub { color: var(--muted); font-size: 13px; margin-top: 4px; }

/* ---------- 分类 ---------- */
.cat { margin-bottom: 26px; }
.cat-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 700; color: var(--text);
  margin: 0 0 12px;
}
.cat-title::before {
  content: "";
  width: 4px; height: 16px; border-radius: 2px;
  background: var(--grad);
}
.cat-count { color: var(--muted); font-weight: 400; font-size: 12px; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (min-width: 560px) { .grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------- 游戏卡片 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px;
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
  -webkit-user-select: none; user-select: none;
  min-height: 108px;
}
.card:active { transform: translateY(1px) scale(.985); }
.card.ready:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.card.soon { opacity: .62; cursor: default; }

.card-icon {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  font-size: 21px;
  border-radius: 12px;
  background: rgba(108, 140, 255, 0.12);
  border: 1px solid rgba(108, 140, 255, 0.18);
}
.card-name { font-size: 15px; font-weight: 700; }
.card-desc { font-size: 12px; color: var(--muted); line-height: 1.4; }
.card-meta {
  margin-top: auto;
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; color: var(--muted);
}
.badge {
  font-size: 10px; font-weight: 700;
  padding: 2px 7px; border-radius: 999px;
  letter-spacing: .4px;
}
.badge-local { background: rgba(75, 214, 163, .14); color: var(--ok); }
.badge-room  { background: rgba(108, 140, 255, .16); color: var(--accent); }
.badge-soon  { background: rgba(139, 152, 173, .16); color: var(--muted); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-weight: 600; font-size: 15px;
  border-radius: 12px;
  padding: 12px 16px;
  cursor: pointer;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
}
.btn:active { transform: scale(.97); }
.btn.primary {
  background: var(--grad);
  border: none;
  color: #071018;
}
.btn.ghost { background: transparent; }
.btn.danger { border-color: rgba(255, 107, 122, .4); color: var(--danger); }
.btn.block { width: 100%; }
.btn.sm { padding: 8px 12px; font-size: 13px; border-radius: 10px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.row { display: flex; align-items: center; gap: 10px; }
.row.spread { justify-content: space-between; }
.grow { flex: 1; }
.mt8 { margin-top: 8px; } .mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.center { text-align: center; }

/* ---------- 输入 ---------- */
.input {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  padding: 13px 14px;
  font-size: 16px;
  outline: none;
  transition: border-color .15s ease;
}
.input:focus { border-color: var(--accent); }
.input::placeholder { color: var(--muted); }

/* ---------- 模态 ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(4, 7, 12, 0.66);
  backdrop-filter: blur(4px);
  display: flex; align-items: flex-end; justify-content: center;
  animation: fade .18s ease;
}
@media (min-width: 560px) { .modal-mask { align-items: center; } }
.modal {
  width: 100%; max-width: 440px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px 20px 0 0;
  padding: 20px;
  animation: slide .22s cubic-bezier(.2,.9,.3,1);
}
@media (min-width: 560px) { .modal { border-radius: 20px; } }
.modal-title { font-size: 18px; font-weight: 700; margin: 0 0 14px; }
.modal .field { margin-bottom: 14px; }
.modal .label { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes slide { from { transform: translateY(24px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- 提示 ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: rgba(27, 36, 53, 0.96);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 11px 18px;
  border-radius: 12px;
  font-size: 14px;
  z-index: 200;
  box-shadow: var(--shadow);
  animation: fade .18s ease;
}

/* ---------- 房间 ---------- */
.room-code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 40px; font-weight: 800; letter-spacing: 6px;
  text-align: center; margin: 10px 0 4px;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.qr-box {
  width: 168px; height: 168px;
  margin: 0 auto;
  background: #fff; border-radius: 12px;
  padding: 8px; overflow: hidden;
}
.qr-box canvas, .qr-box img { width: 100% !important; height: 100% !important; }
.player-list { display: flex; flex-direction: column; gap: 8px; }
.player {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 13px;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
}
.player .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--ok);
}
.player .dot.off { background: #4a5568; }
.player-name { font-weight: 600; }
.player-you { color: var(--accent); font-size: 11px; }
.player-host { color: var(--gold); font-size: 11px; font-weight: 700; }

/* ---------- 通用游戏区 ---------- */
.game-wrap { display: flex; flex-direction: column; gap: 14px; }
.panel {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 14px;
}
.hud { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.stat {
  background: var(--surface-2); border: 1px solid var(--border-soft);
  border-radius: 10px; padding: 8px 12px; text-align: center; min-width: 64px;
}
.stat .k { font-size: 11px; color: var(--muted); }
.stat .v { font-size: 20px; font-weight: 800; }

.die-grid { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.die {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  font-size: 26px; font-weight: 800;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 12px;
}
.die.rolling { animation: shake .5s ease; }
@keyframes shake { 0%,100%{transform:rotate(0)} 25%{transform:rotate(-12deg) scale(1.1)} 75%{transform:rotate(12deg) scale(1.1)} }

.board-grid { display: grid; gap: 8px; justify-content: center; margin: 0 auto; }
.cell {
  aspect-ratio: 1;
  display: grid; place-items: center;
  border-radius: 10px;
  font-weight: 800;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  -webkit-user-select: none; user-select: none;
  transition: transform .08s ease, background .12s ease;
}
.cell:active { transform: scale(.92); }

/* 2048 色板 */
.t2 { background:#2c3a52; } .t4 { background:#35507a; } .t8 { background:#3f68a6; }
.t16 { background:#3f8aa6; } .t32 { background:#38a58b; } .t64 { background:#2fb878; }
.t128 { background:#d5a53a; } .t256 { background:#cf8f2f; } .t512 { background:#c9732b; }
.t1024 { background:#c25b3e; } .t2048 { background:#b53b66; }

/* 扫雷 / 数独 / 五子棋 */
.cell.mine { background:#3a2a2a; }
.cell.open { background: var(--bg-2); }
.cell.flag { color: var(--gold); }
.cell.bomb { background: #5a2530; }
.cell.hint { color: var(--accent); }
.cell.sel { outline: 2px solid var(--accent); outline-offset: -2px; }
.cell.fixed { color: var(--accent); }
.sudoku .cell { font-size: 18px; }
.sudoku .cell:nth-child(3n) { border-right: 2px solid var(--border); }
.sudoku .cell.b { border-bottom: 2px solid var(--border); }
.gomoku .cell { border-radius: 8px; }
.gomoku .stone { width: 76%; height: 76%; border-radius: 50%; }
.stone.b { background: radial-gradient(circle at 34% 30%, #fff, #9aa5b5); }
.stone.w { background: radial-gradient(circle at 34% 30%, #f5f7fb, #6b7686); }

/* 转盘 */
.wheel-stage { position: relative; width: 260px; height: 260px; margin: 6px auto; }
.wheel-svg { width: 100%; height: 100%; overflow: visible; }
.wheel-pointer {
  position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  width: 0; height: 0;
  border-left: 12px solid transparent; border-right: 12px solid transparent;
  border-top: 20px solid #f5c96b;
  filter: drop-shadow(0 2px 3px rgba(0,0,0,.5));
}

.hr { border: 0; border-top: 1px solid var(--border-soft); margin: 12px 0; }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 5px 11px; font-size: 13px;
}
.chip button { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 15px; padding: 0 0 0 4px; }

.hist { max-height: 180px; overflow-y: auto; font-size: 13px; color: var(--muted); line-height: 1.7; }

.hidden { display: none !important; }