:root {
    --code-bg: hsl(210, 11%, 15%);
    --code-border: hsl(210, 11%, 25%);
    --feature-icon-size: 3rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.code-block {
    background-color: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 0.375rem;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    font-size: 0.875rem;
    word-break: break-all;
    overflow-x: auto;
}

.feature-icon {
    height: var(--feature-icon-size);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card {
    border: 1px solid var(--bs-border-color);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.card-header {
    background-color: var(--bs-secondary-bg);
    border-bottom: 1px solid var(--bs-border-color);
}

.badge {
    font-size: 0.75em;
}

.input-group-lg .form-control {
    font-size: 1.125rem;
}

@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .code-block {
        font-size: 0.8rem;
        padding: 0.5rem;
    }
}

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

.btn {
    border-radius: 0.375rem;
    font-weight: 500;
}

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

.text-muted {
    opacity: 0.8;
}

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

.loading .btn {
    cursor: not-allowed;
}