:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-input: #252836;
  --bg-hover: #2a2d3a;
  --border: #2e3144;
  --text: #e4e6ef;
  --text-secondary: #8b8fa3;
  --text-muted: #5d6178;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-bg: rgba(99,102,241,0.12);
  --success: #22c55e;
  --success-bg: rgba(34,197,94,0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245,158,11,0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239,68,68,0.12);
  --info: #3b82f6;
  --info-bg: rgba(59,130,246,0.12);
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* Login */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f1117 0%, #1a1040 50%, #0f1117 100%);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  width: 420px;
  box-shadow: var(--shadow);
}

.login-logo { text-align: center; margin-bottom: 32px; }
.logo-icon {
  width: 64px; height: 64px; border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), #a855f7);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700; color: #fff; margin-bottom: 16px;
}
.login-logo h1 { font-size: 22px; font-weight: 700; }
.login-subtitle { color: var(--text-secondary); font-size: 14px; margin-top: 4px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; color: var(--text-secondary); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 14px; background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); font-size: 14px; outline: none; transition: border 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 80px; }

.login-divider { text-align: center; margin: 20px 0; color: var(--text-muted); font-size: 13px; position: relative; }
.login-divider::before, .login-divider::after {
  content: ''; position: absolute; top: 50%; width: 40%; height: 1px; background: var(--border);
}
.login-divider::before { left: 0; }
.login-divider::after { right: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 500;
  cursor: pointer; border: none; transition: all 0.2s; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text); background: var(--bg-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.85; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: 0.85; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Layout */
.main-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px; background: var(--bg-card); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; position: fixed; height: 100vh; z-index: 10;
}
.sidebar-header {
  padding: 20px; display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid var(--border);
}
.logo-icon-sm {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #a855f7);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; color: #fff;
}
.sidebar-title { font-size: 16px; font-weight: 700; }

.sidebar-nav { flex: 1; padding: 12px 8px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 14px;
  cursor: pointer; transition: all 0.2s; text-decoration: none; margin-bottom: 2px;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { background: var(--primary-bg); color: var(--primary); font-weight: 500; }

.sidebar-footer { padding: 16px; border-top: 1px solid var(--border); }

.main-content { flex: 1; margin-left: 240px; padding: 28px 32px; }

/* Page header */
.page-header { margin-bottom: 28px; display: flex; align-items: center; justify-content: space-between; }
.page-header h2 { font-size: 22px; font-weight: 700; }
.page-header-actions { display: flex; gap: 10px; }

/* Stats cards */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px; margin-bottom: 28px;
}
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px;
}
.stat-card .stat-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; }
.stat-card .stat-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.stat-card.primary .stat-value { color: var(--primary); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.info .stat-value { color: var(--info); }

/* Table */
.table-container {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
}
.table-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.table-header h3 { font-size: 15px; font-weight: 600; }
.table-toolbar { display: flex; gap: 10px; align-items: center; }
.table-toolbar input {
  padding: 7px 12px; background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); font-size: 13px; outline: none; width: 200px;
}
.table-toolbar input:focus { border-color: var(--primary); }

table { width: 100%; border-collapse: collapse; }
th { padding: 12px 16px; text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); font-weight: 600; border-bottom: 1px solid var(--border); }
td { padding: 12px 16px; font-size: 14px; border-bottom: 1px solid var(--border); }
tr:hover td { background: var(--bg-hover); }
tr:last-child td { border-bottom: none; }

/* Badges */
.badge {
  display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px;
  font-size: 12px; font-weight: 500;
}
.badge-primary { background: var(--primary-bg); color: var(--primary); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: var(--info-bg); color: var(--info); }

/* Pagination */
.pagination {
  padding: 12px 20px; display: flex; align-items: center; justify-content: space-between;
  border-top: 1px solid var(--border); font-size: 13px; color: var(--text-secondary);
}
.pagination-btns { display: flex; gap: 6px; }
.pagination-btns button {
  padding: 5px 12px; background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); cursor: pointer; font-size: 13px;
}
.pagination-btns button:hover { border-color: var(--primary); }
.pagination-btns button:disabled { opacity: 0.4; cursor: not-allowed; }

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex;
  align-items: center; justify-content: center; z-index: 100;
}
.modal {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  width: 520px; max-height: 80vh; overflow-y: auto; box-shadow: var(--shadow);
}
.modal-header {
  padding: 20px 24px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.btn-close {
  width: 32px; height: 32px; border: none; background: transparent; color: var(--text-secondary);
  font-size: 22px; cursor: pointer; border-radius: 6px;
}
.btn-close:hover { background: var(--bg-hover); color: var(--text); }
.modal-body { padding: 24px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }

/* Toast */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 200; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 12px 20px; border-radius: var(--radius-sm); font-size: 14px;
  box-shadow: var(--shadow); animation: slideIn 0.3s ease;
}
.toast-success { background: #166534; color: #bbf7d0; }
.toast-error { background: #991b1b; color: #fecaca; }
.toast-info { background: #1e3a5f; color: #bfdbfe; }

@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Misc */
.empty-state { text-align: center; padding: 48px; color: var(--text-muted); }
.empty-state svg { width: 48px; height: 48px; margin-bottom: 12px; opacity: 0.4; }
.text-mono { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 13px; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.flex { display: flex; }
.gap-2 { gap: 8px; }

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