:root {
    --primary-color: #2980b9;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: #f8f9fa;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: -0.5px;
}

.hero-section {
    background: linear-gradient(135deg, #2980b9 0%, #1a5276 100%);
}

.min-vh-50 {
    min-height: 50vh;
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.card {
    border-radius: 0.75rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
}

.btn {
    border-radius: 0.5rem;
    font-weight: 500;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(41, 128, 185, 0.25);
}

.table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.badge {
    font-weight: 500;
    padding: 0.4em 0.8em;
}

footer a {
    text-decoration: none;
}

footer a:hover {
    color: white !important;
}

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

.input-group-text {
    background-color: #f8f9fa;
}

@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .display-4 {
        font-size: 2.5rem;
    }
}

.item-row {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}