:root {
  --bg: #eef2f7;
  --sidebar: #132033;
  --sidebar-2: #1b2c44;
  --text: #1d2b3a;
  --muted: #66758a;
  --line: #dbe3ee;
  --card: #ffffff;
  --primary: #1f6feb;
  --primary-2: #1558c0;
  --ok: #14875a;
  --warn: #b78100;
  --bad: #c9372c;
  --chip: #f1f5fb;
  --shadow: 0 10px 30px rgba(19, 32, 51, 0.08);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.layout { display: grid; grid-template-columns: 236px 1fr; min-height: 100vh; }
.sidebar { background: linear-gradient(180deg, var(--sidebar), var(--sidebar-2)); color: #e8eef7; padding: 22px 14px; display: flex; flex-direction: column; gap: 18px; }
.brand { padding: 6px 10px 16px; }
.brand h1 { margin: 0; font-size: 18px; letter-spacing: 0.02em; }
.brand p { margin: 6px 0 0; color: #9db0c8; font-size: 12px; }
.nav { display: flex; flex-direction: column; gap: 4px; }
.nav a { padding: 10px 12px; border-radius: 10px; color: #c9d6e6; }
.nav a.active, .nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav .group { margin: 12px 8px 6px; font-size: 11px; color: #8ea0b6; letter-spacing: .08em; }
.userbox { margin-top: auto; padding: 12px; background: rgba(255,255,255,.06); border-radius: 12px; font-size: 13px; }
.userbox button { margin-top: 8px; width: 100%; border: 0; background: #2b3f5c; color: #fff; border-radius: 8px; padding: 8px; }

.main { padding: 22px 26px 40px; overflow: auto; }
.topbar { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 18px; }
.topbar h2 { margin: 0 0 4px; font-size: 24px; }
.topbar p { margin: 0; color: var(--muted); font-size: 13px; }

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
.card, .panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.card { padding: 16px 18px; }
.card .label { color: var(--muted); font-size: 12px; }
.card .value { font-size: 28px; font-weight: 700; margin-top: 6px; }
.panel { padding: 18px; margin-bottom: 16px; }
.panel h3 { margin: 0 0 14px; font-size: 16px; }

.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.filters input, .filters select, .form input, .form select, .form textarea {
  border: 1px solid var(--line); background: #fff; border-radius: 10px; padding: 8px 10px; min-width: 140px;
}
.form { display: grid; gap: 12px; }
.form.grid-2 { grid-template-columns: 1fr 1fr; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.form .full { grid-column: 1 / -1; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.btn { border: 0; background: var(--primary); color: #fff; border-radius: 10px; padding: 8px 12px; }
.btn:hover { background: var(--primary-2); }
.btn.ghost { background: #eef3f9; color: var(--text); }
.btn.danger { background: var(--bad); }
.btn.warn { background: var(--warn); color: #fff; }
.btn.small { padding: 6px 9px; font-size: 12px; }

.badge { display: inline-flex; align-items: center; padding: 3px 8px; border-radius: 999px; font-size: 12px; background: var(--chip); }
.badge.ok { background: #e5f7ee; color: var(--ok); }
.badge.bad { background: #fdecea; color: var(--bad); }
.badge.warn { background: #fff6dd; color: #8a6700; }
.badge.muted { background: #eef2f6; color: var(--muted); }

.login { min-height: 100vh; display: grid; place-items: center; background: radial-gradient(circle at top, #27446d, #132033 55%); }
.login-card { width: min(440px, 92vw); background: #fff; border-radius: 20px; padding: 28px; box-shadow: var(--shadow); }
.login-card h1 { margin: 0 0 8px; font-size: 22px; }
.login-card p { color: var(--muted); margin: 0 0 18px; }
.hint { font-size: 12px; color: var(--muted); line-height: 1.6; }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.tabs button { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 7px 12px; color: var(--muted); }
.tabs button.active { background: var(--sidebar); color: #fff; border-color: var(--sidebar); }

.toast { position: fixed; right: 18px; bottom: 18px; background: #132033; color: #fff; padding: 12px 14px; border-radius: 12px; z-index: 50; max-width: 360px; }
.modal-mask { position: fixed; inset: 0; background: rgba(16, 24, 36, .45); display: grid; place-items: center; z-index: 40; padding: 16px; }
.modal { width: min(720px, 100%); background: #fff; border-radius: 16px; padding: 20px; max-height: 86vh; overflow: auto; }
.checklist { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.check { padding: 10px 12px; border-radius: 10px; background: #f6f8fb; font-size: 13px; }
.check.done { background: #e5f7ee; color: var(--ok); }
.secret-note { background: #fff8e8; border: 1px solid #f1dfb0; color: #7a5b12; padding: 10px 12px; border-radius: 10px; font-size: 12px; }

@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 5; padding: 12px; }
  .nav { flex-direction: row; overflow: auto; }
  .nav a { white-space: nowrap; }
  .cards, .form.grid-2, .checklist { grid-template-columns: 1fr; }
  .userbox { display: none; }
  .main { padding: 14px; }
}