:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; font-size: 14px; line-height: 1.5; color: var(--gray-900); background: var(--gray-50); }
.wrapper { display: flex; min-height: 100vh; }
.sidebar { width: 240px; background: var(--gray-900); color: white; padding: 1rem 0; position: fixed; height: 100vh; }
.sidebar-logo { padding: 0 1.5rem 1.5rem; font-size: 1.25rem; font-weight: 600; border-bottom: 1px solid var(--gray-700); margin-bottom: 1rem; }
.sidebar-nav a { display: block; padding: 0.75rem 1.5rem; color: var(--gray-300); text-decoration: none; }
.sidebar-nav a:hover { background: var(--gray-700); color: white; }
.sidebar-nav .divider { margin: 1rem 0; border-top: 1px solid var(--gray-700); }
.sidebar-nav .section-title { padding: 0.5rem 1.5rem; font-size: 0.75rem; text-transform: uppercase; color: var(--gray-500); }
.main { flex: 1; margin-left: 240px; padding: 2rem; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.page-title { font-size: 1.5rem; font-weight: 600; }
.card { background: white; border-radius: 0.5rem; box-shadow: 0 1px 3px rgba(0,0,0,0.1); margin-bottom: 1.5rem; }
.card-header { padding: 1rem 1.5rem; border-bottom: 1px solid var(--gray-200); font-weight: 600; }
.card-body { padding: 1.5rem; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--gray-200); }
.table th { background: var(--gray-50); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; color: var(--gray-500); }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1rem; font-size: 0.875rem; font-weight: 500; border: none; border-radius: 0.375rem; cursor: pointer; text-decoration: none; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }
.btn-group { display: flex; gap: 0.5rem; }
.form-group { margin-bottom: 1rem; }
.form-label { display: block; margin-bottom: 0.5rem; font-weight: 500; }
.form-control { width: 100%; padding: 0.5rem 0.75rem; font-size: 0.875rem; border: 1px solid var(--gray-300); border-radius: 0.375rem; }
.form-control:focus { outline: none; border-color: var(--primary); }
.badge { display: inline-block; padding: 0.25rem 0.5rem; font-size: 0.75rem; font-weight: 500; border-radius: 9999px; }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-gray { background: var(--gray-200); color: var(--gray-700); }
.alert { padding: 1rem; border-radius: 0.375rem; margin-bottom: 1rem; }
.alert-success { background: #d1fae5; color: #065f46; }
.alert-error { background: #fee2e2; color: #991b1b; }
.server-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.server-card { background: white; border-radius: 0.5rem; padding: 1.25rem; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.server-card-header { display: flex; justify-content: space-between; margin-bottom: 1rem; }
.server-card-title { font-weight: 600; }
.server-card-subtitle { color: var(--gray-500); font-size: 0.875rem; }
.server-card-info { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; font-size: 0.875rem; }
.server-card-info dt { color: var(--gray-500); }
.server-card-actions { display: flex; gap: 0.5rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--gray-200); }
.login-wrapper { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--gray-100); }
.login-box { background: white; padding: 2rem; border-radius: 0.5rem; box-shadow: 0 4px 6px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
.login-logo { text-align: center; font-size: 1.5rem; font-weight: 600; margin-bottom: 2rem; }
.text-muted { color: var(--gray-500); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.row { display: flex; flex-wrap: wrap; margin: -0.5rem; }
.col { flex: 1; padding: 0.5rem; }
.col-3 { flex: 0 0 25%; padding: 0.5rem; }
.col-6 { flex: 0 0 50%; padding: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }