/* Custom styles for Giang Dashboard */

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f8f9fa;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.card {
    border: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,.15);
}

.btn {
    transition: all 0.2s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,.2);
}

.alert {
    border: none;
    border-radius: 0.5rem;
}

/* Login page styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Card improvements */
.card-header {
    background-color: #fff;
    border-bottom: 2px solid #f0f0f0;
    font-weight: 600;
}

/* Custom utilities */
.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}

/* Responsive improvements */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1rem;
    }
    
    h1 {
        font-size: 1.75rem;
    }
}