:root {
    --bg: #0f172a;
    --panel: #111827;
    --card: #1f2937;
    --line: #334155;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --accent: #22d3ee;
    --accent2: #34d399;
    --danger: #f87171;
    --warn: #fbbf24;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
.layout { display: flex; min-height: 100vh; }
.sider {
    width: 220px;
    background: #0b1220;
    border-right: 1px solid var(--line);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.brand { display: flex; align-items: center; gap: 8px; font-size: 18px; }
.sider nav { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.sider nav a {
    color: var(--muted);
    padding: 10px 12px;
    border-radius: 8px;
}
.sider nav a.active, .sider nav a:hover {
    background: #1e293b;
    color: #fff;
}
.logout { color: var(--danger); font-size: 14px; }
.main { flex: 1; }
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    border-bottom: 1px solid var(--line);
}
.content { padding: 24px 28px 48px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 18px;
}
.card .label { color: var(--muted); font-size: 13px; }
.card .value { font-size: 26px; font-weight: 700; margin-top: 8px; }
.muted { color: var(--muted); }
.table-wrap { overflow: auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; background: #0f172a; }
.badge { padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.ok { background: rgba(52,211,153,.15); color: var(--accent2); }
.wait { background: rgba(251,191,36,.15); color: var(--warn); }
.danger { color: var(--danger); }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
input, select, button, .btn {
    border-radius: 8px;
    border: 1px solid var(--line);
    background: #0f172a;
    color: var(--text);
    padding: 8px 12px;
    font-size: 14px;
}
button, .btn { cursor: pointer; background: linear-gradient(135deg, #0891b2, #059669); border: 0; color: #fff; }
.btn-ghost { background: #334155; }
.pager { margin-top: 16px; display: flex; gap: 8px; align-items: center; }
.alert { padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; }
.alert-error { background: rgba(248,113,113,.15); color: var(--danger); }
.alert-ok { background: rgba(52,211,153,.15); color: var(--accent2); }
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: radial-gradient(circle at top, #164e63, #0f172a 55%);
}
.login-card {
    width: 100%;
    max-width: 420px;
    background: #111827;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
}
.login-card h1 { margin: 8px 0 6px; }
.login-card p { color: var(--muted); margin-bottom: 20px; }
.otp-input {
    width: 100%;
    text-align: center;
    letter-spacing: 8px;
    font-size: 28px;
    padding: 14px;
    margin-bottom: 16px;
}
#qrcode { display: flex; justify-content: center; margin: 12px 0 16px; background: #fff; padding: 12px; border-radius: 12px; }
.secret-box {
    word-break: break-all;
    background: #0f172a;
    padding: 10px;
    border-radius: 8px;
    font-family: monospace;
    margin-bottom: 16px;
}
.steps { text-align: left; color: var(--muted); font-size: 13px; line-height: 1.7; margin-bottom: 16px; }
@media (max-width: 800px) {
    .layout { flex-direction: column; }
    .sider { width: 100%; flex-direction: row; flex-wrap: wrap; align-items: center; }
    .sider nav { flex-direction: row; flex-wrap: wrap; }
}