/**
 * Variant Selector Modal - Stili CSS
 * Sistema Multi-Regulation Universal Component
 *
 * @version 1.0
 * @date 2025-10-11
 */

/* ============================================
   OVERLAY E MODAL BASE
   ============================================ */

.variant-selector-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.variant-selector-overlay.active {
    opacity: 1;
}

.variant-selector-modal {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.variant-selector-overlay.active .variant-selector-modal {
    transform: translateY(0);
}

/* ============================================
   HEADER MODAL
   ============================================ */

.variant-modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px 30px;
    border-radius: 20px 20px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.variant-modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.variant-modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 2rem;
    line-height: 1;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.variant-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

/* ============================================
   BODY MODAL
   ============================================ */

.variant-modal-body {
    padding: 30px;
}

.variant-modal-intro {
    margin-bottom: 25px;
    font-size: 1rem;
    color: #2c3e50;
}

.variant-modal-intro strong {
    color: #667eea;
    font-size: 1.1rem;
}

.variant-modal-intro p {
    margin: 10px 0 0 0;
    color: #7f8c8d;
    font-size: 0.95rem;
}

/* ============================================
   OPZIONI VARIANTI
   ============================================ */

.variant-options-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 25px;
}

.variant-option-btn {
    width: 100%;
    background: white;
    border: 2px solid #e1e8ed;
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.variant-option-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.variant-option-btn:hover {
    border-color: #667eea;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
    transform: translateY(-2px);
}

.variant-option-btn:hover::before {
    transform: scaleX(1);
}

.variant-option-btn.preselected {
    border-color: #27ae60;
    background: linear-gradient(135deg, #f0fff4, #ffffff);
}

.variant-option-btn.preselected::before {
    background: #27ae60;
    transform: scaleX(1);
}

.variant-option-btn.expired {
    opacity: 0.7;
    border-style: dashed;
}

.variant-option-btn.expired:not(:hover) {
    background: #f8f9fa;
}

/* ============================================
   HEADER OPTION
   ============================================ */

.variant-option-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.variant-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.variant-expired-badge {
    background: #fee;
    color: #e74c3c;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
}

.variant-recommended-badge {
    background: #d4edda;
    color: #27ae60;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ============================================
   BODY OPTION
   ============================================ */

.variant-option-body {
    margin-bottom: 12px;
}

.variant-value {
    font-size: 2rem;
    font-weight: 700;
    color: #27ae60;
    margin-bottom: 8px;
}

.variant-option-btn.expired .variant-value {
    color: #95a5a6;
}

.variant-dates {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 8px;
}

.variant-description {
    font-size: 0.85rem;
    color: #95a5a6;
    font-style: italic;
}

/* ============================================
   FOOTER OPTION
   ============================================ */

.variant-option-footer {
    display: flex;
    justify-content: flex-end;
}

.variant-select-cta {
    color: #667eea;
    font-weight: 600;
    font-size: 0.9rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.variant-option-btn:hover .variant-select-cta {
    opacity: 1;
}

/* ============================================
   HINT FINALE
   ============================================ */

.variant-modal-hint {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    border-left: 4px solid #f39c12;
    padding: 15px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    color: #856404;
}

.variant-modal-hint strong {
    color: #d68910;
}

/* ============================================
   BADGE INLINE (per uso fuori modal)
   ============================================ */

.variant-badge-inline {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    vertical-align: middle;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .variant-selector-modal {
        max-height: 95vh;
    }

    .variant-modal-header {
        padding: 20px;
    }

    .variant-modal-header h3 {
        font-size: 1.3rem;
    }

    .variant-modal-body {
        padding: 20px;
    }

    .variant-option-btn {
        padding: 15px;
    }

    .variant-value {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .variant-selector-overlay {
        padding: 10px;
    }

    .variant-option-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .variant-modal-hint {
        padding: 12px 15px;
        font-size: 0.85rem;
    }
}

/* ============================================
   ANIMAZIONI
   ============================================ */

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.variant-option-btn {
    animation: slideIn 0.4s ease forwards;
}

.variant-option-btn:nth-child(1) { animation-delay: 0.1s; }
.variant-option-btn:nth-child(2) { animation-delay: 0.2s; }
.variant-option-btn:nth-child(3) { animation-delay: 0.3s; }