.seller-name-row {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .seller-name-row .seller-name {
        font-size: 15px;
        font-weight: 600;
        color: #222;
        text-decoration: none;
    }

    .seller-name-row .seller-name:hover {
        text-decoration: underline;
    }

    .seller-name-row .view-shop {
        font-size: 12px;
        color: #ee4d2d;
        /* màu cam kiểu Shopee */
        border: 1px solid #ee4d2d;
        padding: 2px 8px;
        border-radius: 12px;
        text-decoration: none;
        white-space: nowrap;
    }

    .seller-name-row .view-shop:hover {
        background: #ee4d2d;
        color: #fff;
    }


    /* =============================================================================
   1. GLOBAL LAYOUT & GENERAL STYLES
   ========================================================================== */

    /* Bố cục tổng thể trang mô tả và sản phẩm liên quan */
    .product-description-section,
    .related-auctions-section {
        max-width: 1150px;
        /* Giới hạn chiều rộng trên desktop */
        margin: 0 auto;
        /* Căn giữa trang */
        padding: 0 15px;
        /* Tạo khoảng đệm hai bên */
        box-sizing: border-box;
    }

    /* Tiêu đề section */
    .section-title {
        font-size: 22px;
        font-weight: 600;
        margin-bottom: 20px;
        text-align: left;
        color: #222;
    }

    /* Nội dung mô tả */
    .description-content {
        font-size: 16px;
        line-height: 1.6;
        color: #333;
        max-width: 1150px;
        margin: 0 auto;
        padding: 0 15px;
        box-sizing: border-box;
    }

    /* Description Section chi tiết */
    .product-description-section .description-content {
        line-height: 1.7;
        font-size: 15px;
    }

    .product-description-section img {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
    }

    /* =============================================================================
   2. SOCIAL SHARE & FAVORITE ACTIONS (Chia sẻ & Yêu thích)
   ========================================================================== */
    .share-favorite-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin: 15px 0;
        gap: 15px;
        flex-wrap: wrap;
    }

    .social-share {
        display: flex;
        gap: 10px;
    }

    .share-btn {
        width: 36px;
        height: 36px;
        display: flex;
        justify-content: center;
        align-items: center;
        background: #f1f1f1;
        border-radius: 50%;
        color: #555;
        transition: all 0.3s ease;
        text-decoration: none;
    }

    .share-btn.fb:hover {
        background: #1877f2;
        color: #fff;
    }

    .share-btn.zalo:hover {
        background: #0088ff;
        color: #fff;
    }

    .favorite-actions {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .like-btn {
        display: flex;
        align-items: center;
    }

    .follow-text {
        font-size: 14px;
        font-weight: 500;
        color: #333;
    }

    /* =============================================================================
   3. PRODUCT CONTENT TOGGLE (Thu gọn / Xem thêm mô tả)
   ========================================================================== */
    /* Khung chứa nội dung mặc định */
    #yhp-product-content {
        position: relative;
        transition: all 0.5s ease;
        overflow: hidden;
    }

    /* Class khi đang thu gọn: Giới hạn chiều cao + Hiệu ứng mờ */
    .yhp-content-collapsed {
        max-height: 200px;
    }

    /* Tạo lớp phủ mờ (Shadow/Gradient) khi thu gọn */
    .yhp-content-collapsed::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 150px;
        background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 1));
        pointer-events: none;
    }

    /* Class khi đã mở rộng: Bỏ giới hạn chiều cao */
    .yhp-content-expanded {
        max-height: none;
    }

    /* Khu vực chứa nút bấm */
    .yhp-show-more-container {
        text-align: center;
        margin-top: 15px;
        padding-bottom: 20px;
    }

    /* Style cho nút bấm */
    #yhp-toggle-content-btn {
        background: #fff;
        border: 1px solid #007bff;
        color: #007bff;
        padding: 10px 25px;
        border-radius: 25px;
        font-weight: 600;
        cursor: pointer;
        font-size: 14px;
        transition: all 0.3s ease;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    #yhp-toggle-content-btn:hover {
        background: #007bff;
        color: #fff;
        transform: translateY(-2px);
    }

    /* =============================================================================
   4. BIDDING CORE & FORMS (Khu vực đấu giá)
   ========================================================================== */
    .bidding-actions {
        max-width: 450px;
        margin: 25px auto;
        background: #ffffff;
        border: 1px solid #e5e5e5;
        border-radius: 12px;
        padding: 20px;
        box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
        font-family: 'Inter', sans-serif;
    }

    .bid-title {
        text-align: center;
        font-weight: 600;
        font-size: 18px;
        color: #222;
        margin-bottom: 15px;
    }

    .bidding-core .product-title {
        font-size: 22px;
        font-weight: 600;
        margin-bottom: 15px;
        line-height: 1.4;
    }

    /* Countdown Timer */
    .countdown-timer {
        background: var(--warning-bg);
        border: 1px solid var(--warning-border);
        border-radius: var(--border-radius);
        padding: 5px;
        margin-bottom: 10px;
        text-align: center;
    }

    .countdown-timer .label {
        font-size: 14px;
        color: var(--warning-text);
        margin-bottom: 8px;
        display: block;
    }

    .countdown-timer .time-display {
        font-size: 28px;
        font-weight: 700;
        color: var(--danger-color);
        letter-spacing: 1.5px;
    }

    /* Price Info */
    .price-info {
        background: var(--bg-light);
        border-radius: var(--border-radius);
        padding: 5px;
        text-align: center;
        margin-bottom: 10px;
    }

    .price-info .current-price-vnd {
        font-size: 25px;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 5px;
        display: block;
    }

    .price-info .current-price-jpy {
        font-size: 16px;
        color: var(--light-text-color);
    }

    .price-info .bid-count {
        margin-top: 5px;
        font-size: 12px;
    }

    /* Bid Inputs */
    .bid-form {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    .bid-input-wrapper {
        display: flex;
        flex-direction: column;
        margin-bottom: 5px;
    }

    .bid-input-wrapper label {
        font-weight: 500;
        color: #555;
        margin-bottom: 6px;
    }

    #bid-amount-input {
        padding: 10px 12px;
        font-size: 16px;
        border-radius: 8px;
        border: 1px solid #ddd;
        transition: border-color 0.2s;
    }

    #bid-amount-input:focus {
        outline: none;
        border-color: #007bff;
        box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.1);
    }

    .bid-input-group {
        position: relative;
    }

    .bid-input-group .bid-amount-input {
        width: 100%;
        height: 50px;
        border-radius: 8px;
        border: 1px solid var(--border-color);
        padding: 0 15px 0 50px;
        font-size: 18px;
        font-weight: 500;
        text-align: right;
    }

    .bid-input-group .currency-symbol {
        position: absolute;
        left: 15px;
        top: 50%;
        transform: translateY(-50%);
        font-size: 18px;
        font-weight: bold;
        color: var(--light-text-color);
    }

    /* Quick Bid Buttons */
    .quick-bid-buttons {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
        margin-bottom: 20px;
    }

    .quick-bid-btn {
        background: #f9fafb;
        border: 1px solid #e0e0e0;
        color: #007bff;
        padding: 10px;
        border-radius: 8px;
        cursor: pointer;
        font-weight: 500;
        transition: all 0.25s ease;
    }

    .quick-bid-btn:hover {
        background: #007bff;
        color: #fff;
        transform: translateY(-2px);
    }

    /* Style bổ sung cho quick-bid trong bidding-core nếu có xung đột */
    .bidding-core .quick-bid-buttons .quick-bid-btn {
        background: #fff;
        border: 1px solid #005bd9;
        color: #005bd9;
        padding: 2px 5px;
    }

    .bidding-core .quick-bid-buttons .quick-bid-btn:hover {
        background-color: #e4e4e4;
        color: #000;
        border-color: var(--secondary-color);
    }

    /* Message */
    #bidding-message {
        margin-top: 10px;
        font-size: 14px;
        color: #333;
        text-align: center;
        font-weight: 500;
    }

    /* =============================================================================
   5. BUTTONS STYLES (Mua ngay, Đấu giá, Sniper)
   ========================================================================== */
    /* Nút Mua Ngay (Cam/Vàng) */
    .buynow-btn {
        background: linear-gradient(135deg, #ff9800, #f57c00);
        color: #fff;
        animation: pulseBuy 2s infinite;
    }

    .buynow-btn:hover {
        background: linear-gradient(135deg, #f57c00, #ef6c00);
    }

    /* Layout 2 nút săn phút chót */
    .s1-action-buttons {
        display: flex;
        gap: 10px;
        margin-top: 15px;
    }

    .bid-submit-btn {
        flex: 1;
        /* Chia đều chiều rộng */
        padding: 12px;
        border: none;
        border-radius: 8px;
        font-weight: 600;
        cursor: pointer;
        transition: transform 0.2s, box-shadow 0.2s;
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        /* Từ block bidding-actions */
        width: 100%;
        background: linear-gradient(135deg, #007bff, #0056d2);
        font-size: 16px;
        transition: all 0.25s ease;
    }

    .bid-submit-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        background: linear-gradient(135deg, #0056d2, #0041a3);
    }

    /* Nút Đấu Ngay */
    .bid-now-btn {
        background: linear-gradient(135deg, #E60012, #c62828);
    }

    /* Nút Sniper */
    .sniper-btn {
        background: linear-gradient(135deg, #007bff, #0056b3);
    }

    /* Nút Place Bid chung */
    .place-bid-btn {
        width: 100%;
        background: linear-gradient(45deg, var(--primary-color), #ff8a65);
        color: #fff;
        border: none;
        height: 55px;
        font-size: 18px;
        font-weight: bold;
        border-radius: 8px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        transition: transform 0.2s;
        max-width: 350px;
        margin-left: auto;
        margin-right: auto;
    }

    .place-bid-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 10px rgba(255, 87, 34, 0.4);
    }

    /* =============================================================================
   6. PRODUCT DETAILS & SELLER INFO (Thông tin người bán)
   ========================================================================== */
    .product-details .details-box {
        border: 1px solid var(--border-color);
        border-radius: var(--border-radius);
        margin-bottom: 20px;
        background: #fff;
    }

    .product-details .details-box-header {
        padding: 15px;
        font-size: 16px;
        font-weight: 600;
        border-bottom: 1px solid var(--border-color);
    }

    .product-details .details-box-content {
        padding: 15px;
    }

    /* Seller Info */
    .seller-info {
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .seller-info .avatar img {
        width: 60px;
        height: 60px;
        border-radius: 50%;
        object-fit: cover;
    }

    .seller-info .name {
        font-weight: 600;
        margin-bottom: 4px;
    }

    .seller-info .rating-summary {
        font-size: 14px;
        color: var(--light-text-color);
    }

    /* Reputation Badges */
    .seller-info .reputation-badge {
        display: inline-block;
        padding: 4px 10px;
        border-radius: 20px;
        font-size: 12px;
        font-weight: 500;
        margin-top: 8px;
    }

    .reputation-high {
        background: #eafaf1;
        color: #1e8449;
    }

    .reputation-good {
        background: #f0fff4;
        color: #2ecc71;
    }

    .reputation-average {
        background: #fff8e1;
        color: #f39c12;
    }

    .reputation-low {
        background: #fdecea;
        color: #e74c3c;
    }

    /* Shop Reputation Icons */
    .shop-reputation {
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 14px;
    }

    .shop-reputation i {
        font-size: 16px;
    }

    .shop-reputation .reputation-high i {
        color: #0b9c31;
    }

    .shop-reputation .reputation-good i {
        color: #2b7cff;
    }

    .shop-reputation .reputation-average i {
        color: #b0a800;
    }

    .shop-reputation .reputation-low i {
        color: #e63946;
    }

    /* Shipping Info */
    .shipping-info p {
        margin: 0;
        font-size: 14px;
    }

    .shipping-info strong {
        color: var(--text-color);
    }

    /* Auction Policy */
    .auction-policy ul {
        list-style-type: disc;
        padding-left: 20px;
        margin: 0;
        font-size: 14px;
        line-height: 1.6;
    }

    .auction-policy .policy-actions {
        margin-top: 15px;
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
    }

    .auction-policy .policy-actions a {
        text-decoration: none;
        font-size: 14px;
        font-weight: 600;
        color: #fff;
        padding: 8px 16px;
        border-radius: 6px;
        transition: background-color 0.25s ease;
    }

    .auction-policy .guide {
        background-color: var(--secondary-color);
    }

    .auction-policy .deposit {
        background-color: var(--success-color);
    }

    /* Seller Rating Table */
    .seller-rating-table {
        width: 100%;
        border-collapse: collapse;
        margin-top: 15px;
        background-color: var(--bg-light);
        border-radius: 8px;
        overflow: hidden;
        text-align: center;
        border: 1px solid var(--border-color);
    }

    .seller-rating-table th {
        padding: 12px 8px;
        font-size: 13px;
        font-weight: 400;
        color: var(--light-text-color);
        border-left: 1px solid var(--border-color);
    }

    .seller-rating-table th:first-child {
        border-left: none;
    }

    .seller-rating-table th strong {
        display: block;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-color);
        margin-top: 4px;
    }

    /* =============================================================================
   7. POPUPS & MODALS (Popup ngân hàng, Modal đấu giá, Overlay)
   ========================================================================== */
    /* --- CSS CHO POPUP NGÂN HÀNG --- */
    .my-popup-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.7);
        z-index: 999;
        justify-content: center;
        align-items: center;
    }

    .my-popup-content {
        background: #fff;
        padding: 30px;
        border-radius: 8px;
        width: 90%;
        max-width: 500px;
        position: relative;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }

    .my-popup-close {
        position: absolute;
        top: 10px;
        right: 15px;
        font-size: 28px;
        font-weight: bold;
        color: #888;
        cursor: pointer;
        line-height: 1;
    }

    .my-popup-close:hover {
        color: #000;
    }

    .bank-details p {
        font-size: 16px;
        border-bottom: 1px dashed #eee;
        padding-bottom: 10px;
    }

    .bank-details p strong {
        display: inline-block;
        min-width: 120px;
    }

    .copy-btn {
        background: #007bff;
        color: white;
        border: none;
        padding: 5px 10px;
        border-radius: 4px;
        cursor: pointer;
        font-size: 12px;
        margin-left: 10px;
    }

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

    /* --- CSS cho Modal Popup Đấu Giá --- */
    .s1-modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.6);
        z-index: 9999;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .s1-modal-content {
        background: #fff;
        width: 90%;
        max-width: 400px;
        border-radius: 12px;
        padding: 20px;
        position: relative;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        animation: slideDown 0.3s ease;
    }

    .s1-close-modal {
        position: absolute;
        top: 10px;
        right: 15px;
        font-size: 24px;
        cursor: pointer;
        color: #999;
    }

    .s1-close-modal:hover {
        color: #333;
    }

    /* Modal Design Chi Tiết */
    .bid-modal-design {
        background: #fff;
        width: 80%;
        max-width: 380px;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
        animation: fadeIn 0.3s ease;
    }

    .modal-header {
        background: #f8f9fa;
        padding: 5px 10px;
        border-bottom: 1px solid #eee;
    }

    .modal-header h3 {
        margin: 0;
        font-size: 18px;
        color: #333;
        font-weight: 700;
    }

    .modal-header p {
        margin: 5px 0 0;
        font-size: 13px;
        color: #666;
    }

    .modal-body {
        padding: 5px;
    }

    .price-display-large {
        text-align: center;
        margin-bottom: 20px;
        font-size: 15px;
        color: #555;
    }

    .price-highlight {
        color: #d32f2f;
        font-weight: bold;
        font-size: 18px;
        margin-left: 5px;
    }

    .bid-input-container {
        display: flex;
        border: 1px solid #ddd;
        border-radius: 4px;
        overflow: hidden;
        margin-bottom: 5px;
        height: 40px;
    }

    .modal-input {
        flex: 1;
        border: none;
        text-align: center;
        font-size: 22px;
        font-weight: bold;
        color: #333;
        height: 90%;
        outline: none;
    }

    .ctrl-btn {
        width: 50px;
        border: none;
        background: #f1f1f1;
        font-size: 24px;
        cursor: pointer;
        color: #555;
    }

    .ctrl-btn:hover {
        background: #e0e0e0;
    }

    .quick-add-group {
        display: flex;
        gap: 10px;
        justify-content: center;
        margin-bottom: 10px;
    }

    .quick-tag {
        background: #fff;
        border: 1px solid #007bff;
        color: #007bff;
        padding: 6px 12px;
        border-radius: 20px;
        cursor: pointer;
        font-size: 13px;
        font-weight: 500;
        transition: 0.2s;
    }

    .quick-tag:hover {
        background: #007bff;
        color: white;
    }

    .service-options label {
        display: block;
        font-size: 13px;
        color: #666;
        margin-bottom: 5px;
    }

    .service-options i {
        color: #28a745;
        margin-right: 5px;
    }

    .status-msg-box {
        padding: 10px;
        border-radius: 5px;
        margin-bottom: 15px;
        font-size: 14px;
        text-align: center;
    }

    .modal-footer {
        padding: 15px 20px;
        background: #f8f9fa;
        border-top: 1px solid #eee;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .btn-primary-large {
        width: 70%;
        margin-left: auto;
        margin-right: auto;
        display: block;
        background: #007bff;
        color: white;
        border: none;
        padding: 14px;
        font-size: 16px;
        font-weight: bold;
        border-radius: 6px;
        cursor: pointer;
        transition: 0.3s;
        text-transform: uppercase;
    }

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

    .btn-secondary-large {
        width: 100%;
        background: transparent;
        color: #666;
        border: none;
        padding: 10px;
        cursor: pointer;
    }

    .btn-secondary-large:hover {
        text-decoration: underline;
    }

    /* =============================================================================
   8. STATUS OVERLAY & LIGHTBOX (Lớp phủ trạng thái và Xem ảnh)
   ========================================================================== */
    /* Status Overlay đè lên ảnh */
    .yhp-status-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        padding: 12px 15px;
        z-index: 999;
        box-sizing: border-box;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        background: #444;
		color:#fff;
    }

    .yhp-status-overlay .overlay-title {
        font-weight: bold;
        font-size: 16px;
        margin-bottom: 4px;
        display: block;

    }

    .yhp-status-overlay .overlay-desc {
        font-size: 13px;
        opacity: 0.9;
    }

    /* Màu khi thắng/thua */
    .overlay-winning {
        background-color: rgba(230, 242, 255, 0.95);
        color: #0044cc;
        border-bottom: 1px solid #cce5ff;
    }

    .overlay-losing {
        background-color: rgba(255, 235, 238, 0.95);
        color: #d32f2f;
        border-bottom: 1px solid #ffcdd2;
    }

    /* Lightbox (Xem ảnh zoom) */
    .yhp-lightbox-overlay {
        display: none;
        position: fixed;
        z-index: 999999;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.8);
        align-items: center;
        justify-content: center;
    }

    .yhp-lightbox-content {
        background-color: #fff;
        width: 90%;
        max-width: 1100px;
        height: 85vh;
        border-radius: 4px;
        position: relative;
        display: flex;
        flex-direction: column;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    }

    .yhp-lightbox-close {
        position: absolute;
        top: 10px;
        right: 15px;
        font-size: 30px;
        color: #666;
        cursor: pointer;
        z-index: 100;
        line-height: 1;
    }

    .yhp-lightbox-close:hover {
        color: #000;
    }

    .yhp-lightbox-body {
        display: flex;
        height: 100%;
        width: 100%;
    }

    /* Cột trái: Ảnh zoom */
    .yhp-lightbox-main {
        flex: 3;
        background: #f8f8f8;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: relative;
        padding: 20px;
    }

    .yhp-zoom-container {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
        cursor: crosshair;
    }

    .yhp-zoom-container img {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
        transition: transform 0.1s ease-out;
        transform-origin: center center;
    }

    .yhp-zoom-hint {
        margin-top: 10px;
        font-size: 13px;
        color: #888;
    }

    /* Cột phải: Thumbnail */
    .yhp-lightbox-sidebar {
        flex: 1;
        background: #fff;
        border-left: 1px solid #ddd;
        padding: 20px;
        overflow-y: auto;
    }

    .yhp-lightbox-sidebar h3 {
        margin-top: 0;
        font-size: 16px;
        border-bottom: 1px solid #eee;
        padding-bottom: 10px;
        margin-bottom: 15px;
    }

    .yhp-lightbox-thumbs {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .yhp-lightbox-thumbs img {
        width: 100%;
        height: 80px;
        object-fit: cover;
        border: 2px solid transparent;
        cursor: pointer;
        border-radius: 4px;
    }

    .yhp-lightbox-thumbs img:hover,
    .yhp-lightbox-thumbs img.active {
        border-color: #007bff;
        opacity: 0.8;
    }

    /* =============================================================================
   9. FOOTER MENU & STICKY BARS (Menu dưới chân trang)
   ========================================================================== */
    #footer-menu {
        position: fixed;
        bottom: -80px;
        left: 0;
        width: 100%;
        background: #ffffff;
        color: #000000;
        transition: bottom 0.4s ease;
        z-index: 9999;
        box-shadow: 0 -3px 6px #ff761a;
    }

    #footer-menu ul {
        display: flex;
        justify-content: space-around;
        margin: 0;
        padding: 10px;
        list-style: none;
    }

    #footer-menu li a {
        color: #000;
        text-decoration: none;
        font-size: 14px;
        display: flex;
        align-items: center;
        gap: 5px;
    }

    #footer-menu li a:hover {
        text-decoration: underline;
    }

    /* Sticky Bid Bar (Mobile) */
    .sticky-bid-bar {
        display: none;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background-color: #fff;
        padding: 10px 15px;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        border-top: 1px solid var(--border-color);
    }

    .sticky-bid-bar-content {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .sticky-price-info {
        flex-grow: 1;
    }

    .sticky-price-info .price {
        font-size: 16px;
        font-weight: bold;
        color: var(--primary-color);
    }

    .sticky-price-info .time {
        font-size: 13px;
        color: var(--light-text-color);
    }

    .sticky-bid-btn {
        background-color: var(--primary-color);
        color: #fff;
        border: none;
        padding: 12px 20px;
        border-radius: 8px;
        font-weight: bold;
        cursor: pointer;
        white-space: nowrap;
    }

    /* =============================================================================
   10. ANIMATIONS (Hiệu ứng động)
   ========================================================================== */
    @keyframes pulseBuy {
        0% {
            box-shadow: 0 0 0 0 rgba(255, 152, 0, 0.7);
        }

        70% {
            box-shadow: 0 0 0 10px rgba(255, 152, 0, 0);
        }

        100% {
            box-shadow: 0 0 0 0 rgba(255, 152, 0, 0);
        }
    }

    @keyframes pulseAnim {
        0% {
            box-shadow: 0 0 0 0 rgba(0, 123, 255, 0.4);
        }

        100% {
            box-shadow: 0 0 0 10px rgba(0, 123, 255, 0);
        }
    }

    .pulse {
        animation: pulseAnim 0.3s ease;
    }

    @keyframes slideDown {
        from {
            transform: translateY(-20px);
            opacity: 0;
        }

        to {
            transform: translateY(0);
            opacity: 1;
        }
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Shake Animation (Rung lắc khi lỗi - Phiên bản 1: Xoay & Dịch chuyển) */
    @keyframes shake-rotate {
        0% {
            transform: translate(1px, 1px) rotate(0deg);
        }

        10% {
            transform: translate(-1px, -2px) rotate(-1deg);
        }

        20% {
            transform: translate(-3px, 0px) rotate(1deg);
        }

        30% {
            transform: translate(3px, 2px) rotate(0deg);
        }

        40% {
            transform: translate(1px, -1px) rotate(1deg);
        }

        50% {
            transform: translate(-1px, 2px) rotate(-1deg);
        }

        60% {
            transform: translate(-3px, 1px) rotate(0deg);
        }

        70% {
            transform: translate(3px, 1px) rotate(-1deg);
        }

        80% {
            transform: translate(-1px, -1px) rotate(1deg);
        }

        90% {
            transform: translate(1px, 2px) rotate(0deg);
        }

        100% {
            transform: translate(1px, -2px) rotate(-1deg);
        }
    }

    /* Shake Animation (Rung lắc ngang - Phiên bản 2: Dùng cho .shake-anim) */
    @keyframes shake {

        0%,
        100% {
            transform: translateX(0);
        }

        25% {
            transform: translateX(-5px);
        }

        75% {
            transform: translateX(5px);
        }
    }

    .shake-anim {
        animation: shake 0.4s ease-in-out;
    }

    /* =============================================================================
   11. RESPONSIVE / MOBILE STYLES
   ========================================================================== */
    @media (max-width: 991px) {
        .sticky-bid-bar {
            display: block;
            /* Hiện sticky bar trên mobile/tablet */
        }

        .auction-page-container {
            padding-bottom: 90px;
            /* Tạo khoảng trống cho sticky bar */
        }
    }

    @media (max-width: 768px) {

        .product-description-section,
        .related-auctions-section {
            max-width: 100%;
            padding: 0 10px;
        }

        .section-title {
            font-size: 18px;
            text-align: center;
        }

        /* Responsive Lightbox */
        .yhp-lightbox-body {
            flex-direction: column;
        }

        .yhp-lightbox-main {
            flex: 2;
            height: 60%;
        }

        .yhp-lightbox-sidebar {
            flex: 1;
            height: 40%;
            border-left: none;
            border-top: 1px solid #ddd;
        }

        .yhp-lightbox-thumbs {
            grid-template-columns: repeat(4, 1fr);
        }

        /* Ẩn Footer menu trên mobile */
        #footer-menu {
            display: none !important;
        }
    }

    @media (max-width: 480px) {
        .s1-action-buttons {
            flex-wrap: wrap;
        }

        .bid-submit-btn {
            flex: 1 1 100%;
            margin-bottom: 5px;
        }

        /* Overlay status text nhỏ lại */
        .yhp-status-overlay {
            padding: 8px 10px;
        }

        .yhp-status-overlay .overlay-title {
            font-size: 14px;
        }

        .yhp-status-overlay .overlay-desc {
            font-size: 11px;
        }
    }