:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --success: #4ade80;
  --danger: #f87171;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body, #app {
  height: 100%; width: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 14px; color: var(--text); background: var(--bg);
}
.shell { height: 100%; display: flex; flex-direction: column; }
.main { flex: 1; overflow-y: auto; padding: 24px; }
.nav { display: flex; gap: 4px; padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--bg-card); align-items: center; }
.nav .logo { font-size: 18px; font-weight: 700; color: var(--accent); margin-right: 20px; }
.nav a { color: var(--text-muted); text-decoration: none; padding: 6px 14px; border-radius: 8px; font-size: 13px; transition: all 0.15s; }
.nav a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav a.active { color: var(--accent); background: rgba(56,189,248,0.1); }
.page-header { margin-bottom: 24px; }
.page-header h1 { font-size: 22px; font-weight: 600; margin-bottom: 4px; }
.page-header p { color: var(--text-muted); font-size: 13px; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin-bottom: 16px; }
.card-title { font-size: 14px; font-weight: 600; color: var(--accent); margin-bottom: 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.info-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.info-row:last-child { border-bottom: none; }
.info-label { color: var(--text-muted); }
.info-value { font-family: 'SF Mono', Consolas, monospace; font-size: 13px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.stat-box { background: rgba(56,189,248,0.05); border: 1px solid rgba(56,189,248,0.15); border-radius: 10px; padding: 14px; text-align: center; }
.stat-box .stat-value { font-size: 20px; font-weight: 700; color: var(--accent); font-family: 'SF Mono', Consolas, monospace; }
.stat-box .stat-label { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-card); color: var(--text); font-size: 13px; cursor: pointer; transition: all 0.15s; }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: #0f172a; border-color: var(--accent); font-weight: 500; }
.btn-primary:hover { background: #7dd3fc; }
.btn-success { border-color: var(--success); color: var(--success); }
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }
.textarea { width: 100%; min-height: 80px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px; color: var(--text); font-family: 'SF Mono', Consolas, monospace; font-size: 13px; resize: vertical; }
.textarea:focus { outline: none; border-color: var(--accent); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 500; }
.tag-blue { background: rgba(56,189,248,0.15); color: var(--accent); }
.tag-green { background: rgba(74,222,128,0.15); color: var(--success); }
.toast-box { position: fixed; top: 16px; right: 16px; z-index: 9999; }
.toast { padding: 10px 16px; border-radius: 8px; font-size: 13px; margin-bottom: 8px; animation: slideIn 0.2s ease; }
.toast-success { background: rgba(74,222,128,0.15); border: 1px solid var(--success); color: var(--success); }
.toast-info { background: rgba(56,189,248,0.15); border: 1px solid var(--accent); color: var(--accent); }
.toast-error { background: rgba(248,113,113,0.15); border: 1px solid var(--danger); color: var(--danger); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }