:root {
    --metalico-dark: #1a1a2e;
    --metalico-blue: #16213e;
    --metalico-accent: #0f3460;
    --metalico-highlight: #e94560;
}

body {
    background-color: #f5f6fa;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
}

.navbar {
    background-color: var(--metalico-dark) !important;
}

.btn-primary {
    background-color: var(--metalico-accent);
    border-color: var(--metalico-accent);
}

.btn-primary:hover {
    background-color: var(--metalico-blue);
    border-color: var(--metalico-blue);
}

.card {
    border-radius: 12px;
    border: 1px solid #e0e0e0;
}

.card-header {
    border-radius: 12px 12px 0 0 !important;
}

.list-group-item {
    border-left: 0;
    border-right: 0;
}

.list-group-item:first-child {
    border-top: 0;
}

.list-group-item:last-child {
    border-bottom: 0;
}

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

.spin {
    animation: spin 1s linear infinite;
    display: inline-block;
}

@media (max-width: 576px) {
    .container-fluid {
        padding-left: 12px;
        padding-right: 12px;
    }

    .display-6 {
        font-size: 1.8rem;
    }
}