body {
    line-height: 1.6;
    color: #1f2937;
    background: #fff;
    overflow-x: hidden;
}

.icon-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: #4b5563;
}

/* Main Container */
.container {
    max-width: calc(1240px + 60px);
    margin: calc(60px + 40px) auto 40px auto;
    /* padding: 0 30px; */
}

.product-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    background: white;
    padding: 0 30px;
    /* box-shadow: 0 1px 3px rgba(0,0,0,0.1); */
}

/* Product Image Section */
.product-images {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.main-image {
    width: 100%;
    height: 500px;
    display: flex;
    border-radius: 12px;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    overflow: hidden;
    position: relative;
}

        .card-mockup {
            width: 340px;
            height: 215px;
            background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.4);
            padding: 20px;
            position: relative;
            color: white;
        }

        .card-logo {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 50px;
            height: 50px;
            background: rgba(255,255,255,0.2);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            backdrop-filter: blur(10px);
        }

        .card-content {
            display: flex;
            gap: 15px;
            margin-top: 40px;
        }

        .card-photo {
            width: 80px;
            height: 100px;
            background: rgba(255,255,255,0.15);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            backdrop-filter: blur(10px);
            border: 2px solid rgba(255,255,255,0.3);
        }

        .card-details {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 8px;
        }

        .card-name {
            font-size: 1.1rem;
            font-weight: 800;
            letter-spacing: 0.5px;
        }

        .card-title {
            font-size: 0.75rem;
            opacity: 0.9;
            font-weight: 500;
        }

        .card-id {
            font-size: 0.7rem;
            opacity: 0.8;
            margin-top: 10px;
            font-family: monospace;
        }

        .card-footer {
            position: absolute;
            bottom: 15px;
            left: 20px;
            right: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.65rem;
            opacity: 0.8;
        }

        .thumbnail-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 10px;
        }

        .thumbnail {
            height: 80px;
            background: #f3f4f6;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all 0.2s;
            font-size: 2rem;
        }

        .thumbnail:hover {
            border-color: #00BDF2;
        }

        .thumbnail.active {
            border-color: #00BDF2;
            background: #eff6ff;
        }

        /* Product Details Section */
        .product-details {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .product-header h1 {
            font-size: 2rem;
            font-weight: 800;
            color: #111827;
            margin-bottom: 10px;
        }

        .product-subtitle {
            color: #6b7280;
            font-size: 1.1rem;
            margin-bottom: 15px;
        }

        .rating-section {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .stars {
            color: #fbbf24;
            font-size: 1.1rem;
        }

        .rating-text {
            color: #6b7280;
            font-size: 0.95rem;
        }

        .badge {
            display: inline-block;
            padding: 6px 12px;
            background: #dbeafe;
            color: #00BDF2;
            border-radius: 6px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .badge.premium {
            background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
            color: white;
        }

        .price-section {
            padding: 20px 0;
            border-top: 1px solid #e5e7eb;
            border-bottom: 1px solid #e5e7eb;
        }

        .price {
            font-size: 2.5rem;
            font-weight: 800;
            color: #111827;
        }

        .price-note {
            color: #6b7280;
            font-size: 0.9rem;
            margin-top: 5px;
        }

        /* Product Options */
        .option-group {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .option-label {
            font-weight: 700;
            color: #111827;
            font-size: 0.95rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .option-help {
            color: #6b7280;
            font-weight: 400;
            font-size: 0.85rem;
        }

        select {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e5e7eb;
            border-radius: 8px;
            font-size: 1rem;
            background: white;
            cursor: pointer;
            transition: all 0.2s;
        }

        select:hover {
            border-color: #d1d5db;
        }

        select:focus {
            outline: none;
            border-color: #00BDF2;
        }

        /* Features List */
        .features-list {
            list-style: none;
            padding: 20px;
            background: #f9fafb;
            border-radius: 8px;
        }

        .features-list li {
            padding: 10px 0;
            color: #374151;
            position: relative;
            padding-left: 30px;
        }

        .features-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #10b981;
            font-weight: bold;
            font-size: 1.2rem;
        }

        /* Security Features */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            padding: 20px;
            background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
            border-radius: 8px;
            border: 1px solid #bfdbfe;
        }

        .security-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: #00BDF2;
        }

        .security-icon {
            font-size: 1.3rem;
        }

        /* Action Buttons */
        .action-buttons {
            display: flex;
            gap: 15px;
            margin-top: 10px;
        }

        .btn-primary {
            flex: 1;
            padding: 16px;
            background: #00BDF2;
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            transition: all 0.2s;
        }

        .btn-primary:hover {
            background: #00BDF2;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .btn-secondary {
            padding: 16px 30px;
            background: white;
            color: #00BDF2;
            border: 2px solid #00BDF2;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            transition: all 0.2s;
        }

        .btn-secondary:hover {
            background: #eff6ff;
        }

        /* Info Banner */
        .info-banner {
            padding: 15px 20px;
            background: #fef3c7;
            border-radius: 8px;
            color: #92400e;
            font-size: 0.9rem;
            border: 1px solid #fde68a;
        }

        .info-banner strong {
            font-weight: 700;
        }

        .success-banner {
            padding: 15px 20px;
            background: #dcfce7;
            border-radius: 8px;
            color: #166534;
            font-size: 0.9rem;
            border: 1px solid #bbf7d0;
        }

        /* Tabs */
        .tabs {
            margin-top: 40px;
            border-top: 1px solid #e5e7eb;
        }

        .tab-buttons {
            display: flex;
            gap: 0;
            border-bottom: 2px solid #e5e7eb;
        }

        .tab-btn {
            padding: 15px 25px;
            background: none;
            border: none;
            font-weight: 600;
            color: #6b7280;
            cursor: pointer;
            border-bottom: 3px solid transparent;
            transition: all 0.2s;
        }

        .tab-btn.active {
            color: #00BDF2;
            border-bottom-color: #00BDF2;
        }

        .tab-content {
            padding: 30px 0;
        }

        .description-text {
            color: #4b5563;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .description-section {
            margin-top: 25px;
        }

        .description-section h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 12px;
        }

        /* Share Button */
        .share-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: #f3f4f6;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            color: #4b5563;
            transition: all 0.2s;
        }

        .share-btn:hover {
            background: #e5e7eb;
        }

        /* Use Cases Grid */
        .use-cases {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .use-case-card {
            padding: 20px;
            background: #f9fafb;
            border-radius: 8px;
            border: 1px solid #e5e7eb;
        }

        .use-case-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 10px;
        }

        .use-case-card p {
            font-size: 0.9rem;
            color: #6b7280;
            line-height: 1.6;
        }

        /* Responsive */
@media (max-width: 1024px) {
    .container {
        margin: 0;
    }
    .product-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-images {
        position: relative;
    }

    .security-grid {
        grid-template-columns: 1fr;
    }

    .use-cases {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .breadcrumb {
        padding: 15px 20px;
    }

    .action-buttons {
        flex-direction: column;
    }

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

    .card-mockup {
        width: 280px;
        height: 180px;
    }

    .tab-buttons {
        overflow-x: auto;
    }
}