:root {
    --bs-primary: #6366f1;
    --bs-primary-rgb: 99, 102, 241;
    --bs-secondary: #64748b;
    --bs-success: #10b981;
    --bs-danger: #ef4444;
    --bs-warning: #f59e0b;
    --bs-info: #06b6d4;
    --bs-light: #f8fafc;
    --bs-dark: #0f172a;
    --bs-gray-50: #f8fafc;
    --bs-gray-100: #f1f5f9;
    --bs-gray-200: #e2e8f0;
    --bs-gray-300: #cbd5e1;
    --bs-gray-400: #94a3b8;
    --bs-gray-500: #64748b;
    --bs-gray-600: #475569;
    --bs-gray-700: #334155;
    --bs-gray-800: #1e293b;
    --bs-gray-900: #0f172a;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--bs-gray-800);
}

.btn-primary {
    --bs-btn-bg: #6366f1;
    --bs-btn-border-color: #6366f1;
    --bs-btn-hover-bg: #4f46e5;
    --bs-btn-hover-border-color: #4f46e5;
    --bs-btn-active-bg: #4338ca;
    --bs-btn-active-border-color: #4338ca;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease-in-out;
}

.btn-outline-primary {
    --bs-btn-color: #6366f1;
    --bs-btn-border-color: #6366f1;
    --bs-btn-hover-bg: #6366f1;
    --bs-btn-hover-border-color: #6366f1;
    border-radius: 8px;
    font-weight: 500;
}

.text-brand {
    color: #6366f1 !important;
}

.bg-brand {
    background-color: #6366f1 !important;
}

.card {
    border: 1px solid var(--bs-gray-200);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease-in-out;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.form-control {
    border-radius: 8px;
    border: 1px solid var(--bs-gray-300);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.alert {
    border-radius: 8px;
    border: none;
}

.badge {
    border-radius: 6px;
    font-weight: 500;
}

.pagination .page-link {
    border-radius: 8px;
    margin: 0 2px;
    border: 1px solid var(--bs-gray-300);
    color: var(--bs-gray-700);
}

.pagination .page-item.active .page-link {
    background-color: #6366f1;
    border-color: #6366f1;
}

.loading {
    opacity: 0.6;
    pointer-events: none;
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.25rem;
    }

    .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
}