:root {
        --color-bg: #FAFAFA;
        --color-text: #1A1A1A;
        --color-text-light: #6B6B6B;
        --color-accent: #2563EB;
        --color-accent-soft: #EFF6FF;
        --color-border: #E5E5E5;
        --color-card: #FFFFFF;
        --font-display: 'Playfair Display', Georgia, serif;
        --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
        --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-body);
        background-color: var(--color-bg);
        color: var(--color-text);
        line-height: 1.7;
        font-weight: 400;
        overflow-x: hidden;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }

    /* Navigation */
    nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: rgba(250, 250, 250, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        z-index: 1000;
        border-bottom: 1px solid var(--color-border);
        transition: all 0.3s var(--transition-smooth);
    }

    nav .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 80px;
    }

    .logo {
        font-family: var(--font-display);
        font-size: 1.5rem;
        font-weight: 600;
        color: var(--color-text);
        text-decoration: none;
        letter-spacing: -0.02em;
    }

    .logo span {
        color: var(--color-accent);
    }

    .nav-links {
        display: flex;
        gap: 40px;
        list-style: none;
    }

    .nav-links a {
        color: var(--color-text-light);
        text-decoration: none;
        font-size: 0.9rem;
        font-weight: 500;
        transition: color 0.2s var(--transition-smooth);
        position: relative;
    }

    .nav-links a::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0;
        height: 1.5px;
        background: var(--color-accent);
        transition: width 0.3s var(--transition-smooth);
    }

    .nav-links a:hover {
        color: var(--color-text);
    }

    .nav-links a:hover::after {
        width: 100%;
    }

    .mobile-menu {
        display: none;
        flex-direction: column;
        gap: 5px;
        cursor: pointer;
        padding: 10px;
    }

    .mobile-menu span {
        width: 24px;
        height: 2px;
        background: var(--color-text);
        transition: all 0.3s var(--transition-smooth);
    }

    /* Breadcrumb */
    .breadcrumb {
        padding: 120px 0 40px;
    }

    .breadcrumb-list {
        display: flex;
        align-items: center;
        gap: 12px;
        list-style: none;
        font-size: 0.9rem;
    }

    .breadcrumb-list a {
        color: var(--color-text-light);
        text-decoration: none;
        transition: color 0.2s;
    }

    .breadcrumb-list a:hover {
        color: var(--color-accent);
    }

    .breadcrumb-list span {
        color: var(--color-border);
    }

    .breadcrumb-list .current {
        color: var(--color-text);
        font-weight: 500;
    }

    /* Product Section */
    .product-section {
        padding-bottom: 100px;
    }

    .product-layout {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 80px;
        align-items: start;
    }

    /* Gallery */
    .gallery {
        position: sticky;
        top: 100px;
    }

    .gallery-main {
        width: 100%;
        aspect-ratio: 1 / 1;
        background: white;
        border-radius: 24px;
        overflow: hidden;
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 40px;
        border: 1px solid var(--color-border);
    }

    .gallery-main img {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
        transition: transform 0.5s var(--transition-smooth);
    }

    .gallery-main:hover img {
        transform: scale(1.05);
    }

    .gallery-thumbs {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
    }

    .gallery-thumb {
        aspect-ratio: 1 / 1;
        background: white;
        border-radius: 12px;
        overflow: hidden;
        cursor: pointer;
        border: 2px solid transparent;
        transition: all 0.3s var(--transition-smooth);
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 12px;
    }

    .gallery-thumb:hover {
        border-color: var(--color-border);
    }

    .gallery-thumb.active {
        border-color: var(--color-accent);
    }

    .gallery-thumb img {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
    }

    /* Product Info */
    .product-info {
        animation: fadeInUp 0.8s var(--transition-smooth);
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }

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

    .product-category {
        display: inline-block;
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--color-accent);
        text-transform: uppercase;
        letter-spacing: 0.15em;
        margin-bottom: 16px;
    }

    .product-title {
        font-family: var(--font-display);
        font-size: clamp(2rem, 4vw, 3rem);
        font-weight: 500;
        line-height: 1.2;
        letter-spacing: -0.02em;
        margin-bottom: 24px;
    }

    .product-price-box {
        background: white;
        border-radius: 16px;
        padding: 24px;
        margin-bottom: 32px;
        border: 1px solid var(--color-border);
    }

    .product-price {
        font-size: 2.5rem;
        font-weight: 600;
        color: var(--color-accent);
        line-height: 1;
    }

    .product-price span {
        font-size: 1rem;
        color: var(--color-text-light);
        font-weight: 400;
    }

    .price-note {
        font-size: 0.9rem;
        color: var(--color-text-light);
        margin-top: 8px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        padding: 18px 36px;
        border-radius: 50px;
        font-size: 1rem;
        font-weight: 500;
        text-decoration: none;
        transition: all 0.3s var(--transition-smooth);
        cursor: pointer;
        border: none;
        font-family: var(--font-body);
    }

    .btn-primary {
        background: var(--color-text);
        color: white;
        width: 100%;
    }

    .btn-primary:hover {
        background: var(--color-accent);
        transform: translateY(-2px);
        box-shadow: 0 10px 40px rgba(37, 99, 235, 0.3);
    }

    .btn-secondary {
        background: transparent;
        color: var(--color-text);
        border: 1.5px solid var(--color-border);
        width: 100%;
        margin-top: 12px;
    }

    .btn-secondary:hover {
        border-color: var(--color-text);
        background: var(--color-text);
        color: white;
    }

    /* Product Description */
    .product-description {
        margin-top: 48px;
        padding-top: 48px;
        border-top: 1px solid var(--color-border);
    }

    .product-description h3 {
        font-family: var(--font-display);
        font-size: 1.5rem;
        font-weight: 500;
        margin-bottom: 20px;
    }

    .product-description p {
        color: var(--color-text-light);
        font-size: 1.05rem;
        line-height: 1.9;
        margin-bottom: 16px;
    }

    .product-description a {
        color: var(--color-accent);
        text-decoration: none;
        font-weight: 500;
        border-bottom: 1px solid transparent;
        transition: all 0.2s var(--transition-smooth);
    }

    .product-description a:hover {
        border-bottom-color: var(--color-accent);
        color: var(--color-text);
    }

    /* Specifications */
    .specifications {
        margin-top: 48px;
        padding-top: 48px;
        border-top: 1px solid var(--color-border);
    }

    .specifications h3 {
        font-family: var(--font-display);
        font-size: 1.5rem;
        font-weight: 500;
        margin-bottom: 24px;
    }

    .spec-list {
        display: grid;
        gap: 0;
    }

    .spec-item {
        display: grid;
        grid-template-columns: 1fr 1fr;
        padding: 16px 0;
        border-bottom: 1px solid var(--color-border);
    }

    .spec-item:last-child {
        border-bottom: none;
    }

    .spec-label {
        color: var(--color-text-light);
        font-size: 0.95rem;
    }

    .spec-value {
        font-weight: 500;
        text-align: right;
    }

    /* Features */
    .features {
        margin-top: 48px;
        padding-top: 48px;
        border-top: 1px solid var(--color-border);
    }

    .features h3 {
        font-family: var(--font-display);
        font-size: 1.5rem;
        font-weight: 500;
        margin-bottom: 24px;
    }

    .features-list {
        display: grid;
        gap: 12px;
    }

    .feature-item {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        padding: 16px;
        background: white;
        border-radius: 12px;
        border: 1px solid var(--color-border);
    }

    .feature-icon {
        width: 24px;
        height: 24px;
        background: var(--color-accent-soft);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .feature-icon svg {
        width: 12px;
        height: 12px;
        stroke: var(--color-accent);
    }

    .feature-text {
        font-size: 0.95rem;
        color: var(--color-text);
    }

    /* Modal */
    .modal-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        z-index: 2000;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s var(--transition-smooth);
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 24px;
    }

    .modal-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    .modal {
        background: white;
        border-radius: 24px;
        max-width: 500px;
        width: 100%;
        max-height: 90vh;
        overflow-y: auto;
        transform: translateY(20px) scale(0.95);
        transition: transform 0.3s var(--transition-smooth);
    }

    .modal-overlay.active .modal {
        transform: translateY(0) scale(1);
    }

    .modal-header {
        padding: 32px 32px 0;
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
    }

    .modal-header h2 {
        font-family: var(--font-display);
        font-size: 1.75rem;
        font-weight: 500;
    }

    .modal-header p {
        color: var(--color-text-light);
        margin-top: 8px;
        font-size: 0.95rem;
    }

    .modal-close {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--color-bg);
        border: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s var(--transition-smooth);
        flex-shrink: 0;
    }

    .modal-close:hover {
        background: var(--color-border);
    }

    .modal-close svg {
        width: 18px;
        height: 18px;
        stroke: var(--color-text);
    }

    .modal-body {
        padding: 32px;
    }

    .form-group {
        margin-bottom: 24px;
    }

    .form-group label {
        display: block;
        font-size: 0.9rem;
        font-weight: 500;
        margin-bottom: 8px;
        color: var(--color-text);
    }

    .form-group input,
    .form-group select {
        width: 100%;
        padding: 16px 20px;
        border: 1.5px solid var(--color-border);
        border-radius: 12px;
        font-size: 1rem;
        font-family: var(--font-body);
        transition: all 0.2s var(--transition-smooth);
        background: white;
    }

    .form-group input:focus,
    .form-group select:focus {
        outline: none;
        border-color: var(--color-accent);
        box-shadow: 0 0 0 4px var(--color-accent-soft);
    }

    .form-group input::placeholder {
        color: var(--color-text-light);
    }

    .date-inputs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .form-note {
        font-size: 0.85rem;
        color: var(--color-text-light);
        margin-top: 8px;
    }

    .modal-footer {
        padding: 0 32px 32px;
    }

    .btn-submit {
        width: 100%;
        background: var(--color-accent);
        color: white;
    }

    .btn-submit:hover {
        background: var(--color-text);
    }

    .btn-submit:disabled {
        background: var(--color-border);
        cursor: not-allowed;
        transform: none;
        box-shadow: none;
    }

    /* Success Message */
    .success-message {
        text-align: center;
        padding: 40px 32px;
        display: none;
    }

    .success-message.show {
        display: block;
    }

    .success-icon {
        width: 80px;
        height: 80px;
        background: #10B981;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 24px;
        animation: scaleIn 0.5s var(--transition-smooth);
    }

    @keyframes scaleIn {
        from {
            transform: scale(0);
        }

        to {
            transform: scale(1);
        }
    }

    .success-icon svg {
        width: 40px;
        height: 40px;
        stroke: white;
    }

    .success-message h3 {
        font-family: var(--font-display);
        font-size: 1.5rem;
        margin-bottom: 12px;
    }

    .success-message p {
        color: var(--color-text-light);
        margin-bottom: 24px;
    }

    /* Footer */
    footer {
        background: var(--color-text);
        color: white;
        padding: 80px 0 40px;
    }

    .footer-content {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr;
        gap: 80px;
        margin-bottom: 60px;
    }

    .footer-brand .logo {
        color: white;
        margin-bottom: 20px;
        display: inline-block;
    }

    .footer-brand p {
        color: rgba(255, 255, 255, 0.6);
        font-size: 0.95rem;
        line-height: 1.8;
    }

    .footer-section h5 {
        font-family: var(--font-display);
        font-size: 1.1rem;
        font-weight: 500;
        margin-bottom: 24px;
    }

    .footer-links {
        list-style: none;
    }

    .footer-links li {
        margin-bottom: 14px;
    }

    .footer-links a {
        color: rgba(255, 255, 255, 0.6);
        text-decoration: none;
        font-size: 0.95rem;
        transition: color 0.2s var(--transition-smooth);
    }

    .footer-links a:hover {
        color: white;
    }

    .social-links {
        display: flex;
        gap: 16px;
        margin-top: 24px;
    }

    .social-links a {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        border: 1px solid rgba(255, 255, 255, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        text-decoration: none;
        transition: all 0.3s var(--transition-smooth);
    }

    .social-links a:hover {
        background: var(--color-accent);
        border-color: var(--color-accent);
    }

    .footer-bottom {
        padding-top: 40px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.5);
    }

    /* Responsive */
    @media (max-width: 992px) {
        .nav-links {
            display: none;
        }

        .mobile-menu {
            display: flex;
        }

        .product-layout {
            grid-template-columns: 1fr;
            gap: 48px;
        }

        .gallery {
            position: relative;
            top: 0;
        }

        .footer-content {
            grid-template-columns: 1fr;
            gap: 48px;
        }
    }

    @media (max-width: 768px) {
        .breadcrumb {
            padding: 100px 0 24px;
        }

        .gallery-thumbs {
            grid-template-columns: repeat(4, 1fr);
            gap: 8px;
        }

        .product-title {
            font-size: 1.75rem;
        }

        .modal-header,
        .modal-body,
        .modal-footer {
            padding-left: 24px;
            padding-right: 24px;
        }

        .date-inputs {
            grid-template-columns: 1fr;
        }

        .footer-content {
            flex-direction: column;
            gap: 24px;
            text-align: center;
        }

        .footer-links {
            flex-wrap: wrap;
            justify-content: center;
        }

        .footer-bottom {
            flex-direction: column;
            gap: 20px;
            text-align: center;
        }
    }

    /* Mobile Navigation */
    .mobile-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        z-index: 999;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 32px;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s var(--transition-smooth);
    }

    .mobile-nav.active {
        opacity: 1;
        visibility: visible;
    }

    .mobile-nav a {
        font-family: var(--font-display);
        font-size: 2rem;
        color: var(--color-text);
        text-decoration: none;
    }

    .mobile-nav-close {
        position: absolute;
        top: 24px;
        right: 24px;
        width: 48px;
        height: 48px;
        background: none;
        border: none;
        cursor: pointer;
        font-size: 2rem;
        color: var(--color-text);
    }