/* Reset e base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
    background: rgba(255, 255, 255, 0.95);
    padding: 40px 20px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 3rem;
    color: #a259ec;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.tagline {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 20px;
}

/* Sezioni */
.section {
    margin-bottom: 50px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.section h2 {
    font-size: 2rem;
    color: #a259ec;
    margin-bottom: 25px;
    text-align: center;
    border-bottom: 3px solid #a259ec;
    padding-bottom: 10px;
}

/* Griglia termini */
.terms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

/* Card termini */
.term-card {
    background: #fff;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.term-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.term-card.required {
    border-color: #ff6b6b;
    background: linear-gradient(135deg, #fff 0%, #ffe6e6 100%);
}

.term-card.required:hover {
    border-color: #ff5252;
}

.term-icon {
    font-size: 3rem;
    color: #a259ec;
    margin-bottom: 15px;
}

.term-card h3 {
    font-size: 1.4rem;
    color: #333;
    margin-bottom: 15px;
    font-weight: 600;
}

.term-card p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.5;
}

/* Bottoni */
.btn-primary, .btn-secondary, .btn-info {
    display: inline-block;
    padding: 12px 25px;
    border: none;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #a259ec, #8e44ad);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #8e44ad, #7d3c98);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(162, 89, 236, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #2980b9, #21618c);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.btn-info {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
}

.btn-info:hover {
    background: linear-gradient(135deg, #e67e22, #d35400);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(243, 156, 18, 0.4);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: #fff;
    margin: 2% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    background: linear-gradient(135deg, #a259ec, #8e44ad);
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-body {
    padding: 30px;
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: 20px 30px;
    background: #f8f9fa;
    text-align: right;
    border-top: 1px solid #dee2e6;
}

/* Loading e error */
.loading, .error {
    text-align: center;
    padding: 40px;
    font-size: 1.2rem;
}

.loading i {
    color: #a259ec;
    margin-right: 10px;
}

.error i {
    color: #e74c3c;
    margin-right: 10px;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 40px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.footer p {
    margin-bottom: 10px;
    color: #666;
}

.footer a {
    color: #a259ec;
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #8e44ad;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .terms-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 5% auto;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    .section {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.8rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .term-card {
        padding: 20px;
    }
    
    .btn-primary, .btn-secondary, .btn-info {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}