:root {
  --bg: #0f1216;
  --panel: #181d24;
  --panel2: #1f2630;
  --line: #2a323d;
  --text: #e7ecf2;
  --muted: #8a94a3;
  --accent: #4f8cff;
  --green: #22c55e;
  --danger: #ef4444;
  --warn: #f59e0b;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 16px;
}

.view { max-width: 560px; margin: 0 auto; padding: 16px; min-height: 100vh; }
.center { text-align: center; }
.muted { color: var(--muted); font-size: 14px; }
.err { color: var(--danger); font-size: 14px; margin-top: 10px; min-height: 20px; }

/* ---------- 登录 ---------- */
.login-box { margin-top: 22vh; }
.brand { font-size: 30px; font-weight: 700; text-align: center; margin-bottom: 8px; }

/* ---------- 顶栏 ---------- */
.topbar { display: flex; align-items: center; gap: 8px; padding: 6px 0 16px; }
.topbar .title { font-size: 18px; font-weight: 700; }
.topbar .spacer { flex: 1; }
.link { background: none; border: none; color: var(--accent); font-size: 15px; cursor: pointer; padding: 6px 4px; }

/* ---------- 统计 ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 22px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 8px; text-align: center; }
.stat .num { font-size: 26px; font-weight: 700; }
.stat .lbl { color: var(--muted); font-size: 13px; margin-top: 2px; }

/* ---------- 取卡区 ---------- */
.pick-area { margin-top: 18px; }
.pick-area .muted { margin-top: 14px; }

/* ---------- 按钮 ---------- */
.btn {
  background: var(--accent); color: #fff; border: none; border-radius: 12px;
  padding: 13px 18px; font-size: 16px; cursor: pointer; transition: filter .15s; font-family: inherit;
}
.btn:active { filter: brightness(.9); }
.btn:disabled { background: #394150; color: var(--muted); cursor: not-allowed; }
.btn.block { display: block; width: 100%; }
.btn.big { padding: 14px; font-size: 17px; }
.btn.huge { padding: 20px; font-size: 20px; font-weight: 700; border-radius: 14px; }
.btn.green { background: var(--green); }
.btn.ghost { background: transparent; border: 1px solid var(--line); color: var(--text); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
.row-btns { margin-top: 12px; }

/* ---------- 输入 ---------- */
.input, select, textarea {
  width: 100%; background: var(--panel2); border: 1px solid var(--line);
  color: var(--text); border-radius: 12px; padding: 13px 14px; font-size: 16px; font-family: inherit;
  margin-bottom: 12px;
}
.input.big { padding: 15px; font-size: 18px; text-align: center; letter-spacing: 2px; }
textarea { resize: vertical; line-height: 1.6; }

/* ---------- 卡密详情 ---------- */
.card-detail { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.card-detail .row { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px dashed var(--line); }
.card-detail .row:last-child { border-bottom: none; }
.card-detail .k { color: var(--muted); width: 84px; flex-shrink: 0; font-size: 14px; }
.card-detail .v { word-break: break-all; font-family: ui-monospace, Consolas, monospace; font-size: 15px; }

/* ---------- 管理面板 ---------- */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin-bottom: 16px; }
.panel h3 { margin: 0 0 8px; }
.toolbar { display: flex; gap: 10px; align-items: flex-start; }
.toolbar .input { margin-bottom: 0; }
.scroll-x { overflow-x: auto; margin-top: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; }
td .v, td.v { font-family: ui-monospace, Consolas, monospace; }
.badge { font-size: 12px; padding: 3px 9px; border-radius: 999px; }
.badge.available { background: rgba(34,197,94,.15); color: var(--green); }
.badge.used { background: rgba(239,68,68,.15); color: var(--danger); }
.badge.reserved { background: rgba(245,158,11,.15); color: var(--warn); }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%);
  background: rgba(0,0,0,.85); color: #fff; padding: 12px 22px; border-radius: 999px;
  font-size: 15px; z-index: 100; border: 1px solid var(--line);
}