:root {
  --bg: #0f1419;
  --bg-elevated: #1a2332;
  --bg-hover: #243044;
  --border: #2d3a4f;
  --text: #e8eef7;
  --text-secondary: #9aa8bc;
  --text-muted: #6b7a8f;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #38bdf8;
  --radius: 10px;
  --sidebar-w: 240px;
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  padding: 1.25rem 0.75rem;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 20;
}

.brand {
  padding: 0.5rem 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.brand h1 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand p {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.875rem;
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  margin-bottom: 0.25rem;
  transition: background 0.15s, color 0.15s;
}

.nav-btn:hover { background: var(--bg-hover); color: var(--text); }
.nav-btn.active {
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
  font-weight: 500;
}

.nav-icon {
  width: 1.25rem;
  text-align: center;
  opacity: 0.8;
  font-size: 0.85rem;
}

.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 1.5rem 2rem 3rem;
  max-width: 1400px;
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.page-header h2 {
  font-size: 1.35rem;
  font-weight: 600;
}

.page-header .desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 0.25rem;
  max-width: 48rem;
}

.badge-sample {
  display: inline-block;
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.35);
  margin-left: 0.5rem;
  vertical-align: middle;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
}

.toolbar input[type="search"],
.toolbar select,
.form-grid input,
.form-grid select,
.form-grid textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
}

.toolbar input[type="search"] { min-width: 200px; flex: 1; max-width: 320px; }
.toolbar select { min-width: 140px; }

.btn {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  font-size: 0.875rem;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--bg-hover); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger {
  background: transparent;
  border-color: rgba(239, 68, 68, 0.5);
  color: #fca5a5;
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.15); }
.btn-sm { padding: 0.3rem 0.55rem; font-size: 0.75rem; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
}

.stat-card .label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.stat-card .value {
  font-size: 1.4rem;
  font-weight: 600;
  margin-top: 0.15rem;
}

.panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.table-wrap { overflow-x: auto; }

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

table.data th,
table.data td {
  padding: 0.7rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

table.data th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: none;
  letter-spacing: 0.02em;
  background: rgba(0,0,0,0.2);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

table.data th:hover { color: var(--text); }
table.data th .sort { opacity: 0.45; margin-left: 0.25rem; }
table.data tbody tr:hover { background: var(--bg-hover); }
table.data td { color: var(--text-secondary); }
table.data td.strong { color: var(--text); font-weight: 500; }

.pill {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 500;
  white-space: nowrap;
}
.pill-success { background: rgba(34,197,94,0.15); color: #86efac; }
.pill-warning { background: rgba(245,158,11,0.15); color: #fcd34d; }
.pill-danger { background: rgba(239,68,68,0.15); color: #fca5a5; }
.pill-info { background: rgba(56,189,248,0.15); color: #7dd3fc; }
.pill-neutral { background: rgba(148,163,184,0.15); color: #cbd5e1; }

.vault-hint {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-style: italic;
}

.callout {
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.callout strong { color: #93c5fd; }

.flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
}

.flow-step {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.7rem;
  color: var(--text-secondary);
}

.flow-arrow { color: var(--text-muted); }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: min(560px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.25rem;
}

.modal h3 {
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

.form-grid {
  display: grid;
  gap: 0.75rem;
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.form-grid textarea { min-height: 72px; resize: vertical; }

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
}

.empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hidden { display: none !important; }

.footer-note {
  margin-top: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 800px) {
  .sidebar {
    position: relative;
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .app { flex-direction: column; }
  .main { margin-left: 0; padding: 1rem; }
}