* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --bg: #0f172a;
    --bg2: #1e293b;
    --card: #1e293b;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --primary: #38bdf8;
    --primary2: #0ea5e9;
    --accent: #f59e0b;
    --danger: #ef4444;
    --success: #22c55e;
    --border: #334155;
}
html, body { height: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.container { max-width: 720px; margin: 0 auto; padding: 0 16px; width: 100%; }

/* 顶栏 */
.topbar { background: rgba(15,23,42,0.85); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { font-size: 20px; font-weight: 700; color: var(--primary); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.logo .fa { color: var(--primary); }
.nav { display: flex; align-items: center; gap: 16px; font-size: 14px; }
.nav a { color: var(--muted); text-decoration: none; display: inline-flex; align-items: center; gap: 4px; }
.nav a:hover { color: var(--text); }
.nav .user { color: var(--accent); display: inline-flex; align-items: center; gap: 4px; }
.nav .fa { font-size: 13px; }

/* 通用 */
main { flex: 1; padding: 24px 0; }
.btn {
    display: inline-block; padding: 10px 20px; border: none; border-radius: 10px;
    font-size: 15px; cursor: pointer; text-decoration: none; font-weight: 600;
    transition: transform .08s, opacity .2s;
}
.btn:active { transform: scale(0.96); }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary2)); color: #082f49; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-large { padding: 14px 32px; font-size: 18px; }

/* 游戏区 */
.game-wrap { display: flex; flex-direction: column; gap: 20px; }
.stats { display: flex; justify-content: space-around; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 18px 8px; }
.stat { text-align: center; }
.stat .label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.stat span:nth-child(2) { font-size: 30px; font-weight: 800; color: var(--primary); }
.stat .unit { font-size: 13px; color: var(--muted); margin-left: 2px; }

.click-area {
    position: relative;
    height: 320px;
    border-radius: 20px;
    border: 2px dashed var(--border);
    background: radial-gradient(circle at center, rgba(56,189,248,0.08), transparent 70%);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    cursor: pointer;
    transition: all .15s;
    touch-action: manipulation;
}
.click-area.active {
    border-color: var(--primary);
    background: radial-gradient(circle at center, rgba(56,189,248,0.18), transparent 70%);
    box-shadow: 0 0 40px rgba(56,189,248,0.25) inset;
}
#hint { font-size: 18px; color: var(--muted); margin-bottom: 16px; }
.click-area.active #hint { color: var(--accent); font-weight: 700; font-size: 22px; }

/* 结果 */
.result { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; text-align: center; }
.result h2 { margin-bottom: 16px; }
.result-grid { display: flex; justify-content: center; gap: 40px; margin-bottom: 16px; }
.result-grid .label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.result-grid strong { font-size: 36px; color: var(--primary); }
.result-grid .unit { font-size: 14px; color: var(--muted); margin-left: 4px; }
.msg { padding: 10px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.msg.success { background: rgba(34,197,94,0.15); color: var(--success); }
.msg.error { background: rgba(239,68,68,0.15); color: var(--danger); }
.result-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hidden { display: none !important; }

/* 鉴权页 */
.auth-card { max-width: 400px; margin: 40px auto; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 28px; }
.auth-card h1 { margin-bottom: 20px; text-align: center; }
.form { display: flex; flex-direction: column; gap: 14px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--muted); }
.form input { padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font-size: 15px; }
.form input:focus { outline: none; border-color: var(--primary); }
.alert { padding: 10px 12px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
.alert.error { background: rgba(239,68,68,0.15); color: var(--danger); }
.alert.success { background: rgba(34,197,94,0.15); color: var(--success); }
.link { text-align: center; margin-top: 16px; font-size: 14px; color: var(--muted); }
.link a { color: var(--primary); }

/* 排行榜 */
.board-wrap { }
.board-title { text-align: center; margin-bottom: 16px; }
.tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 20px; flex-wrap: wrap; }
.tab { padding: 8px 18px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); color: var(--muted); text-decoration: none; font-size: 14px; }
.tab.active { background: var(--primary); color: #082f49; border-color: var(--primary); font-weight: 700; }
.board-table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 12px; overflow: hidden; border: 1px solid var(--border); table-layout: fixed; }
.board-table th, .board-table td { padding: 12px 10px; border-bottom: 1px solid var(--border); font-size: 14px; vertical-align: middle; }
.board-table th { background: rgba(56,189,248,0.1); color: var(--primary); font-weight: 600; text-align: left; }
.board-table tr:last-child td { border-bottom: none; }
.board-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.board-table .empty { text-align: center; color: var(--muted); padding: 30px; }
.board-table tr.me { background: rgba(245,158,11,0.12); }
/* 列宽与对齐 */
.board-table .col-rank { width: 60px; text-align: center; }
.board-table .col-user { width: auto; text-align: left; }
.board-table .col-num  { width: 90px; text-align: right; font-variant-numeric: tabular-nums; }
.board-table .col-device { width: 90px; text-align: center; }
.board-table td.col-num, .board-table th.col-num { text-align: right; }
.board-table td.col-device, .board-table th.col-device { text-align: center; }
.rank { text-align: center; font-weight: 700; }
.rank-1 { color: #fbbf24; }
.rank-2 { color: #cbd5e1; }
.rank-3 { color: #d97706; }
.tag { color: var(--accent); font-size: 12px; }

.footer { text-align: center; padding: 16px; color: var(--muted); font-size: 12px; border-top: 1px solid var(--border); }

@media (max-width: 480px) {
    .click-area { height: 260px; }
    .stat span:nth-child(2) { font-size: 24px; }
    .result-grid strong { font-size: 28px; }
    .filter-row { flex-direction: column; align-items: stretch; }
}

/* ===== 设备筛选 / 排行榜 ===== */
.filter-row { display: flex; gap: 12px; justify-content: space-between; align-items: center; margin-bottom: 20px; flex-wrap: wrap; }
.device-tabs .tab.active { background: var(--accent); border-color: var(--accent); color: #1a1a1a; }
.device-badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.device-badge.device-pc { background: rgba(56,189,248,0.2); color: #7dd3fc; }
.device-badge.device-mobile { background: rgba(245,158,11,0.2); color: #fcd34d; }
.device-badge.device-all { background: rgba(148,163,184,0.2); color: #cbd5e1; }

/* ===== 后台管理 ===== */
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 13px; border-radius: 6px; }
.form-inline { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.form-inline input, .form-inline select { padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }
.section-title { margin: 18px 0 10px; font-size: 16px; color: var(--primary); border-left: 3px solid var(--primary); padding-left: 8px; }

.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin: 16px 0; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.sc-label { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.sc-value { font-size: 24px; font-weight: 800; color: var(--primary); }

h1 { margin: 16px 0; }
h2 { margin: 16px 0 10px; }

select { padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }

/* 模态框 */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal-box { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; width: 90%; max-width: 380px; }
.modal-box h3 { margin-bottom: 16px; }
.modal-box .form { gap: 12px; }
.modal-actions { display: flex; gap: 10px; margin-top: 10px; }

/* 分页 */
.pagination { display: flex; gap: 6px; flex-wrap: wrap; }
.page { padding: 6px 12px; border-radius: 6px; background: var(--card); border: 1px solid var(--border); color: var(--text); text-decoration: none; font-size: 14px; }
.page.active { background: var(--primary); color: #082f49; border-color: var(--primary); }

.setup-card select { width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font-size: 15px; }

.board-table input[type=checkbox] { width: 16px; height: 16px; }