/* Styles scoped to san-pham/t4.html. */

/* Hero Banner SP */
        .product-hero {
            background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
            padding: 60px 0;
        }

        .product-hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 50px;
        }

        .product-hero-title {
            font-size: 42px;
            margin: 15px 0;
            color: var(--text-dark);
        }

        .product-hero-badges {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .product-hero-badge-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .product-hero-badge-item i {
            color: var(--primary-color);
            font-size: 24px;
            margin-top: 4px;
        }

        .product-hero-badge-item h4 {
            font-size: 14px;
            margin-bottom: 4px;
        }

        .product-hero-badge-item p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Product Main Info */
        .product-main-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            min-width: 0;
        }

        /* Product Gallery */
        .product-gallery {
            display: flex;
            gap: 20px;
            min-width: 0;
            max-width: 100%;
        }

        .gallery-thumbs {
            display: flex;
            flex-direction: column;
            gap: 12px;
            width: 80px;
            max-width: 100%;
            max-height: 552px;
            overflow-x: hidden;
            overflow-y: auto;
            overscroll-behavior: contain;
            -ms-overflow-style: none;
            scrollbar-width: none;
            scroll-behavior: smooth;
            -webkit-overflow-scrolling: touch;
            cursor: grab;
            user-select: none;
            box-sizing: border-box;
        }

        .gallery-thumbs::-webkit-scrollbar {
            display: none;
        }

        .gallery-thumbs.is-dragging {
            cursor: grabbing;
            scroll-behavior: auto;
        }

        .gallery-thumb-item {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            cursor: pointer;
            overflow: hidden;
            aspect-ratio: 1;
            flex: 0 0 80px;
            width: 80px;
            height: 80px;
            padding: 5px;
            background-color: var(--white);
        }

        .gallery-thumb-item.active, .gallery-thumb-item:hover {
            border-color: var(--primary-color);
        }

        .gallery-thumb-item img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            pointer-events: none;
        }

        .gallery-main {
            flex-grow: 1;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            background-color: var(--white);
            padding: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .gallery-main img {
            max-height: 450px;
            object-fit: contain;
        }

        .video-intro-btn {
            margin-top: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
        }

        .video-intro-btn:hover {
            color: var(--primary-color);
        }

        /* Product Specs Form */
        .product-details-box {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .product-badge-model {
            align-self: flex-start;
            background-color: var(--text-muted);
            color: var(--white);
            padding: 4px 12px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 12px;
        }

        .product-title {
            font-size: 32px;
            color: var(--text-dark);
        }

        .product-rating {
            display: flex;
            align-items: center;
            gap: 15px;
            font-size: 13px;
        }

        .stars {
            color: #ffc107;
        }

        .product-price-box {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 15px;
        }

        .product-features-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .product-features-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
        }

        .product-features-list li i {
            color: var(--success);
        }

        .buy-actions {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 15px;
            margin-bottom: 25px;
        }

        .trust-badges {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            background-color: var(--bg-gray);
            padding: 15px;
            border-radius: 12px;
            text-align: center;
            font-size: 11px;
            font-weight: 600;
        }

        .trust-badges i {
            color: var(--primary-color);
            font-size: 18px;
            display: block;
            margin-bottom: 5px;
        }

        /* Scroll Reveal Animations */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }

        @media (max-width: 1024px) {
            .product-hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .product-hero-badges {
                justify-content: center;
            }

            .product-main-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .product-gallery {
                flex-direction: column-reverse;
                overflow: hidden;
                width: 100%;
            }

            .gallery-thumbs {
                flex-direction: row !important;
                flex-wrap: nowrap;
                width: 100% !important;
                max-width: 100%;
                min-width: 0;
                max-height: none;
                justify-content: flex-start !important;
                overflow-x: auto !important;
                overflow-y: hidden !important;
                padding-bottom: 4px;
                touch-action: pan-x;
            }

            .gallery-thumb-item {
                flex: 0 0 64px;
                width: 64px;
                height: 64px;
            }

            .buy-actions {
                grid-template-columns: 1fr;
            }

        }