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

:root {
  --bg: #0f1117;
  --card: #1a1d27;
  --border: #2a2d3a;
  --text: #e4e4e7;
  --text-muted: #8b8d97;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
}

body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; font-size: 14px; }

/* Login */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 40px; width: 360px; text-align: center; }
.login-card h1 { font-size: 24px; margin-bottom: 4px; }
.login-card .subtitle { color: var(--text-muted); margin-bottom: 24px; }
.login-card input { width: 100%; padding: 10px 14px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 14px; margin-bottom: 12px; outline: none; }
.login-card input:focus { border-color: var(--primary); }
.login-card button { width: 100%; padding: 10px; background: var(--primary); color: white; border: none; border-radius: 8px; font-size: 14px; cursor: pointer; }
.login-card button:hover { background: var(--primary-hover); }
.error { color: var(--error); margin-top: 12px; font-size: 13px; }

/* Layout */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: var(--card); border-right: 1px solid var(--border); padding: 20px 0; position: fixed; height: 100vh; overflow-y: auto; }
.sidebar .logo { padding: 0 20px 20px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.sidebar .logo h2 { font-size: 16px; }
.sidebar .logo span { color: var(--text-muted); font-size: 12px; }
.sidebar nav a { display: flex; align-items: center; gap: 10px; padding: 10px 20px; color: var(--text-muted); text-decoration: none; transition: all 0.2s; }
.sidebar nav a:hover, .sidebar nav a.active { color: var(--text); background: rgba(99,102,241,0.1); }
.sidebar nav a.active { border-right: 2px solid var(--primary); }
.main { margin-left: 220px; flex: 1; padding: 24px; }

/* Cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.stat-card .label { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.stat-card .value { font-size: 28px; font-weight: 700; }
.stat-card .sub { color: var(--text-muted); font-size: 12px; margin-top: 4px; }
.stat-card .value.success { color: var(--success); }
.stat-card .value.error { color: var(--error); }
.stat-card .value.warning { color: var(--warning); }

/* Tables */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 24px; }
.card h3 { margin-bottom: 16px; font-size: 16px; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; padding: 10px 12px; color: var(--text-muted); font-size: 12px; text-transform: uppercase; border-bottom: 1px solid var(--border); }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; }
tr:last-child td { border-bottom: none; }
tr:hover { background: rgba(255,255,255,0.02); }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; }
.badge.success { background: rgba(34,197,94,0.15); color: var(--success); }
.badge.error { background: rgba(239,68,68,0.15); color: var(--error); }
.badge.warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge.info { background: rgba(99,102,241,0.15); color: var(--primary); }

/* Progress bar */
.progress-bar { width: 100%; height: 6px; background: var(--bg); border-radius: 3px; overflow: hidden; }
.progress-bar .fill { height: 100%; border-radius: 3px; transition: width 0.3s; }
.progress-bar .fill.green { background: var(--success); }
.progress-bar .fill.yellow { background: var(--warning); }
.progress-bar .fill.red { background: var(--error); }

/* Buttons */
.btn { padding: 8px 16px; border-radius: 6px; border: none; cursor: pointer; font-size: 13px; transition: all 0.2s; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--error); color: white; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--text-muted); }

/* Forms */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; color: var(--text-muted); font-size: 12px; margin-bottom: 4px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 8px 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); font-size: 13px; outline: none; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); }

/* Modal */
.modal-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.6); z-index: 100; align-items: center; justify-content: center; }
.modal-overlay.active { display: flex; }
.modal { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; width: 440px; max-width: 90vw; }
.modal h3 { margin-bottom: 16px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }

/* Chart */
.chart-container { height: 200px; position: relative; }
.chart-bar-group { display: flex; align-items: flex-end; gap: 2px; height: 100%; }
.chart-bar { flex: 1; min-width: 8px; border-radius: 2px 2px 0 0; transition: height 0.3s; position: relative; }
.chart-bar.success { background: var(--success); opacity: 0.7; }
.chart-bar.error { background: var(--error); opacity: 0.7; }
.chart-bar:hover { opacity: 1; }
.chart-labels { display: flex; justify-content: space-between; margin-top: 4px; }
.chart-labels span { font-size: 10px; color: var(--text-muted); }

/* Page header */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.page-header h2 { font-size: 20px; }

/* Filters */
.filters { display: flex; gap: 8px; margin-bottom: 16px; }
.filters select { padding: 6px 10px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); font-size: 13px; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar .logo span, .sidebar nav a span { display: none; }
  .sidebar nav a { justify-content: center; padding: 12px; }
  .main { margin-left: 60px; padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}