* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.stars {
    color: #fbbf24;
}

.provider-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.provider-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background-color: #2563eb;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 600;
    transition: background-color 0.2s;
}

.btn-primary:hover {
    background-color: #1d4ed8;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
}