/* ===== Layout ===== */
.product-detail-container{max-width:1400px;margin:0 auto;background:#fff}
.product-detail-wrapper{display:grid;grid-template-columns:1fr 1fr;min-height:100vh}
.product-images-section{background:#fafafa;position:sticky;top:0;height:100vh;display:flex;flex-direction:row;overflow:hidden}
.product-info-section{padding:30px;background:#fff;overflow-y:auto;max-height:100vh}

/* ===== Thumbnails / Main image ===== */
.thumbnail-gallery{background:#fff;padding:12px 8px;border-right:1px solid #f0f0f0;width:80px;overflow-y:auto;display:flex;flex-direction:column}
.thumbnail-grid{display:flex;flex-direction:column;gap:8px;align-items:center}
.thumbnail-item{width:60px;height:60px;border-radius:6px;overflow:hidden;cursor:pointer;border:2px solid transparent;transition:all .2s}
.thumbnail-item.active{border-color:#ff4757}
.thumbnail-item:hover{transform:scale(1.05)}
.thumbnail-item img{width:100%;height:100%;object-fit:cover}

.main-image-container{flex:1;display:flex;align-items:center;justify-content:center;background:#fff;cursor:zoom-in;position:relative}
.main-product-image{max-width:90%;max-height:90%;object-fit:contain;border-radius:8px;transition:transform .3s}
.main-image-container:hover .main-product-image{transform:scale(1.02)}
.product-badges{position:absolute;top:15px;left:15px;display:flex;flex-direction:column;gap:6px}
.product-badge{background:#ff4757;color:#fff;padding:4px 10px;border-radius:12px;font-size:10px;font-weight:700;text-transform:uppercase}
.product-badge.new{background:#2ed573}
.product-badge.featured{background:#5352ed}
.image-zoom-hint{position:absolute;bottom:15px;right:15px;background:rgba(0,0,0,.7);color:#fff;padding:6px 10px;border-radius:15px;font-size:10px;opacity:0;transition:opacity .3s}
.main-image-container:hover .image-zoom-hint{opacity:1}

/* ===== Header / Price ===== */
.product-header{margin-bottom:25px;padding-bottom:20px;border-bottom:1px solid #f5f5f5}
.product-brand{color:#888;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:1px;margin-bottom:6px}
.product-title{font-size:1.8rem;font-weight:600;color:#333;line-height:1.3;margin-bottom:12px}
.product-rating{display:flex;align-items:center;gap:10px;margin-bottom:15px}
.rating-stars{display:flex;gap:1px}
.star{color:#ffa500;font-size:14px}
.star.empty{color:#ddd}
.product-price-section{background:#f9f9f9;padding:20px;border-radius:8px;margin-bottom:25px}
.price-container{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.current-price{font-size:2rem;font-weight:700;color:#ff4757}
.original-price{font-size:1.2rem;color:#888;text-decoration:line-through}
.discount-badge{background:#ff4757;color:#fff;padding:2px 8px;border-radius:10px;font-size:10px;font-weight:700}
.price-note{color:#666;font-size:11px}

/* ===== Variants ===== */
.variant-section{margin-bottom:20px;padding:16px;background:#fafafa;border-radius:8px}
.variant-title{font-size:13px;font-weight:600;color:#333;margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px}
.selected-variant{font-size:12px;color:#666;margin-bottom:12px}

/* color options (image-first swatches) */
.color-options{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.color-option{width:35px;height:35px;border-radius:50%;border:2px solid #ddd;cursor:pointer;transition:all .2s;overflow:hidden;display:flex;align-items:center;justify-content:center}
.color-option.active{border-color:#333;transform:scale(1.1)}
.color-option:hover{transform:scale(1.05)}
.color-option .swatch{width:34px;height:34px;border-radius:50%;border:1px solid #ddd;background-size:cover;background-position:center;background-repeat:no-repeat}
.color-option.active .swatch{outline:2px solid #222;outline-offset:0}
.color-swatch{width:100%;height:100%;border-radius:50%}

/* size options */
.size-options{display:flex;gap:6px;flex-wrap:wrap}
.size-option{background:#fff;border:1px solid #ddd;color:#333;padding:8px 12px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s;min-width:40px;text-align:center}
.size-option.active{border-color:#333;background:#333;color:#fff}
.size-option:hover{border-color:#666}
.size-option.disabled{background:#f5f5f5;color:#ccc;cursor:not-allowed;text-decoration:line-through}
.size-guide-link{color:#666;font-size:11px;text-decoration:underline;cursor:pointer;margin-top:6px;display:inline-block}
.size-guide-btn{background:none;border:1px solid #ddd;color:#666;padding:8px 12px;border-radius:6px;cursor:pointer;font-size:12px;display:inline-flex;align-items:center;gap:6px;transition:all .3s;margin-top:8px}
.size-guide-btn:hover{background:#f5f5f5}

/* ===== Stock & Actions ===== */
.stock-status{display:flex;align-items:center;gap:6px;margin-bottom:20px;padding:10px 12px;border-radius:6px;font-size:12px;font-weight:500}
.stock-status.in-stock{background:rgba(46,213,115,.1);color:#2ed573;border-left:3px solid #2ed573}
.stock-status.low-stock{background:rgba(255,165,0,.1);color:#ffa500;border-left:3px solid #ffa500}
.stock-status.out-of-stock{background:rgba(255,71,87,.1);color:#ff4757;border-left:3px solid #ff4757}
.stock-indicator{width:8px;height:8px;border-radius:50%;background:currentColor}

/* ===== Unified Add to Cart (sticky) ===== */
.sticky-actions{position:sticky;bottom:20px;z-index:100;box-shadow:0 -2px 10px rgba(0,0,0,0.1);background:#fff;padding:20px;border-radius:8px;border:1px solid #f0f0f0;margin-bottom:25px}
.quantity-section{margin-bottom:16px}
.quantity-label{font-weight:600;color:#333;margin-bottom:6px;display:block;font-size:13px;text-transform:uppercase;letter-spacing:.5px}
.quantity-controls{display:flex;align-items:center;background:#f9f9f9;border-radius:6px;overflow:hidden;border:1px solid #ddd;width:fit-content}
.quantity-btn{background:#fff;border:none;padding:10px 12px;cursor:pointer;font-size:14px;font-weight:600;color:#333;transition:background .2s;border-right:1px solid #ddd}
.quantity-btn:last-child{border-right:none;border-left:1px solid #ddd}
.quantity-btn:hover{background:#333;color:#fff}
.quantity-input{border:none;padding:10px 12px;width:60px;text-align:center;font-size:13px;font-weight:600;background:#fff;color:#333}

.action-buttons{display:flex;gap:10px}
.add-to-cart-btn{flex:1;background:#333;color:#fff;border:none;padding:14px 20px;border-radius:6px;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;transition:all .2s}
.add-to-cart-btn:hover{background:#000}
.add-to-cart-btn:disabled{background:#ccc;cursor:not-allowed}
.wishlist-btn{background:#fff;border:1px solid #ddd;color:#666;padding:14px;border-radius:6px;cursor:pointer;transition:all .2s;font-size:16px}
.wishlist-btn:hover,.wishlist-btn.active{border-color:#ff4757;color:#ff4757;background:rgba(255,71,87,.05)}

/* ===== Details / Tabs ===== */
.product-details{background:#f9f9f9;padding:20px;border-radius:8px;margin-bottom:25px}
.details-title{font-size:1rem;font-weight:600;color:#333;margin-bottom:12px}
.detail-item{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid #f0f0f0}
.detail-item:last-child{border-bottom:none}
.detail-label{font-weight:500;color:#666;font-size:12px}
.detail-value{color:#333;font-weight:500;font-size:12px}

.product-tabs{margin-top:25px;border-top:1px solid #f0f0f0;padding-top:20px}
.tab-navigation{display:flex;gap:0;margin-bottom:20px;background:#f9f9f9;border-radius:6px;padding:3px}
.tab-btn{background:transparent;border:none;padding:10px 16px;font-size:12px;font-weight:600;color:#666;cursor:pointer;border-radius:4px;transition:all .2s;text-transform:uppercase;letter-spacing:.5px;flex:1;text-align:center}
.tab-btn.active{background:#333;color:#fff}
.tab-content{display:none;background:#fff;padding:20px;border-radius:6px;border:1px solid #f0f0f0;font-size:14px;line-height:1.6}
.tab-content.active{display:block}

/* ===== Image Modal ===== */
.image-modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.8);z-index:10000;align-items:center;justify-content:center;padding:20px;display:none}
.image-modal .modal-content{background:#111;border-radius:12px;max-width:90vw;max-height:90vh;width:100%;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}
.modal-image{max-width:100%;max-height:80vh;object-fit:contain;display:block}
.modal-controls{position:absolute;top:10px;right:10px;display:flex;gap:8px}
.modal-btn{background:rgba(255,255,255,.12);border:none;padding:8px;border-radius:6px;color:#fff;cursor:pointer}
.modal-btn:hover{background:rgba(255,255,255,.2)}
.modal-nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.12);border:none;padding:10px;border-radius:50%;color:#fff;cursor:pointer}
.modal-prev{left:10px}
.modal-next{right:10px}
.modal-dots{position:absolute;bottom:10px;left:0;right:0;display:flex;gap:6px;justify-content:center}
.modal-dot{width:8px;height:8px;border-radius:50%;background:#777;opacity:.7;cursor:pointer}
.modal-dot.active{background:#fff;opacity:1}

/* ===== Notification ===== */
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.notification{position:fixed;top:20px;right:20px;background:#333;color:#fff;padding:12px 20px;border-radius:6px;font-size:13px;opacity:.95;z-index:9999;transition:all .3s}
.notification.success{background:#2ed573}
.notification.error{background:#ff4757}
.notification.warning{background:#ffa500}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .product-detail-wrapper{grid-template-columns:1fr}
  .product-images-section{height:50vh;position:static;flex-direction:column}
  .thumbnail-gallery{width:auto;height:80px;flex-direction:row;padding:8px 12px;border-right:none;border-top:1px solid #f0f0f0;overflow-x:auto;overflow-y:hidden}
  .thumbnail-grid{flex-direction:row;gap:6px}
  .product-info-section{height:auto;padding:25px}
}
@media (max-width:768px){
  .product-title{font-size:1.5rem}
  .current-price{font-size:1.7rem}
  .product-info-section{padding:20px}
  .action-buttons{flex-direction:column}
  .color-option{width:30px;height:30px}
  .size-option{padding:6px 10px;font-size:12px}
}
@media (max-width:480px){
  .product-info-section{padding:16px}
  .product-price-section,.product-actions,.product-details{padding:16px}
}

/* ===== Size Guide Modal Styles ===== */
.size-guide-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
    box-sizing: border-box;
}

.size-guide-modal-content {
    background: white;
    border-radius: 12px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.size-guide-modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid #e5e5e5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f8f9fa;
}

.size-guide-modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.size-guide-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
    padding: 5px;
    border-radius: 4px;
    transition: all 0.2s;
}

.size-guide-close:hover {
    background: #e5e5e5;
    color: #333;
}

.size-guide-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

/* Loading State */
.size-guide-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: #666;
}

.size-guide-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #333;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Measure Hero Section */
.measure-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px 25px;
    text-align: center;
}

.measure-hero h3 {
    margin: 0 0 20px 0;
    font-size: 1.4rem;
}

.measure-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.measure-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 20px 15px;
    border-radius: 10px;
    text-align: center;
}

.measure-step {
    width: 30px;
    height: 30px;
    background: white;
    color: #333;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: 10px;
}

.measure-card strong {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.measure-card p {
    margin: 0;
    font-size: 0.8rem;
    opacity: 0.9;
}

/* Size Guide Sections */
.size-guide-section {
    padding: 25px;
    border-bottom: 1px solid #f0f0f0;
}

.size-guide-section:last-child {
    border-bottom: none;
}

.size-guide-section-head h4 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
    color: #333;
    display: flex;
    align-items: center;
    gap: 8px;
}

.size-guide-section-head p {
    margin: 0 0 20px 0;
    color: #666;
    line-height: 1.5;
}

.size-guide-section-body h5 {
    margin: 0 0 15px 0;
    font-size: 1rem;
    color: #444;
    font-weight: 600;
}

/* Size Chart Table */
.size-chart-scroll {
    overflow-x: auto;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid #e5e5e5;
}

.size-chart {
    width: 100%;
    border-collapse: collapse;
    background: white;
    min-width: 500px;
}

.size-chart th {
    background: #f8f9fa;
    padding: 12px 15px;
    text-align: left;
    font-weight: 600;
    color: #333;
    border-bottom: 2px solid #e5e5e5;
    white-space: nowrap;
}

.size-chart td {
    padding: 12px 15px;
    border-bottom: 1px solid #f0f0f0;
    color: #666;
}

.size-chart .row-even {
    background: #fafafa;
}

.size-chart tr:hover {
    background: #f0f8ff;
}

/* Tips Grid */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.tip-card {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #007bff;
}

.tip-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: #333;
}

.tip-head i {
    color: #007bff;
}

.tip-card p {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Generic Size Guide */
.size-guide-generic {
    text-align: center;
    padding: 60px 25px;
    color: #666;
}

.generic-icon {
    font-size: 3rem;
    color: #ddd;
    margin-bottom: 20px;
}

.size-guide-generic h3 {
    margin: 0 0 15px 0;
    color: #333;
}

.size-guide-generic p {
    margin: 0 0 25px 0;
    line-height: 1.5;
}

/* Footer */
.size-guide-footer {
    padding: 20px 25px;
    border-top: 1px solid #e5e5e5;
    background: #f8f9fa;
    text-align: center;
}

.btn-primary {
    background: #007bff;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: background 0.2s;
    cursor: pointer;
}

.btn-primary:hover {
    background: #0056b3;
}

/* Responsive */
@media (max-width: 768px) {
    .size-guide-modal {
        padding: 10px;
    }
    
    .size-guide-modal-content {
        max-height: 95vh;
    }
    
    .measure-grid {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .size-chart {
        font-size: 0.9rem;
    }
}