/**
 * 美瞳产品详情页 - 艺术馆风格
 * 设计理念：高奢美妆 × 现代美术馆 × Apple流线动效
 * 关键词：极简、高级灰阶、光影层次、空间感、慢节奏动效
 */

:root {
    --art-black: #1a1a1a;
    --art-charcoal: #2d2d2d;
    --art-gray-dark: #4a4a4a;
    --art-gray: #6b6b6b;
    --art-gray-light: #9a9a9a;
    --art-silver: #c8c8c8;
    --art-pearl: #e8e8e8;
    --art-white: #f5f5f5;
    --art-pure-white: #ffffff;
    --art-accent: #8b7355;
    --art-transition-slow: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --art-transition-medium: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --art-transition-fast: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --art-easing: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* === 全局重置 === */
.art-product-page {
    background: var(--art-white);
    color: var(--art-charcoal);
    font-family: 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.art-product-page * {
    box-sizing: border-box;
}

/* === 首屏主视觉区域 === */
.art-hero-section {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--art-black);
}

.art-hero-image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.art-hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transform: scale(1);
    filter: saturate(1) brightness(0.9);
    transition: transform 1.5s var(--art-easing), filter 1.5s var(--art-easing);
    will-change: transform, filter;
}

.art-hero-image.scrolled {
    transform: scale(1.15);
    filter: saturate(0.3) brightness(0.7);
}

.art-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.2) 0%,
        rgba(0, 0, 0, 0.1) 50%,
        rgba(0, 0, 0, 0.4) 100%
    );
    pointer-events: none;
}

/* === Parallax 标题文字 === */
.art-hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 0 40px;
    max-width: 900px;
}

.art-hero-category {
    font-size: 12px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--art-silver);
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s var(--art-easing) 0.3s forwards;
}

.art-hero-title {
    font-size: clamp(36px, 6vw, 72px);
    font-weight: 200;
    letter-spacing: -1px;
    color: var(--art-pure-white);
    margin: 0 0 24px 0;
    line-height: 1.1;
    opacity: 0;
    transform: translateY(50px);
    animation: fadeInUp 1.2s var(--art-easing) 0.5s forwards;
    will-change: transform;
}

.art-hero-subtitle {
    font-size: 16px;
    font-weight: 300;
    color: var(--art-silver);
    letter-spacing: 1px;
    max-width: 500px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1s var(--art-easing) 0.7s forwards;
    will-change: transform;
}

.art-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--art-silver);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeIn 1s var(--art-easing) 1.2s forwards;
}

.art-scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--art-silver), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.2); }
}

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

@keyframes fadeIn {
    to { opacity: 1; }
}

/* === 产品详情区域 === */
.art-product-detail {
    padding: 60px 0 120px;
    background: var(--art-white);
}

.art-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
}

.art-product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: start;
}

/* === 产品图库 === */
.art-gallery {
    position: sticky;
    top: 120px;
}

.art-main-image-container {
    position: relative;
    background: var(--art-pearl);
    border-radius: 4px;
    overflow: hidden;
    aspect-ratio: 1;
    margin-bottom: 20px;
}

.art-main-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--art-transition-medium);
}

.art-gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: var(--art-pure-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--art-charcoal);
    opacity: 0;
    transition: var(--art-transition-fast);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.art-main-image-container:hover .art-gallery-nav {
    opacity: 1;
}

.art-gallery-nav:hover {
    background: var(--art-charcoal);
    color: var(--art-pure-white);
    transform: translateY(-50%) scale(1.1);
}

.art-gallery-prev { left: 20px; }
.art-gallery-next { right: 20px; }

/* 缩略图容器 - 固定布局可滑动 */
.art-thumbnails-wrapper {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.art-thumbnails {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 10px 0;
    scrollbar-width: none;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
}

.art-thumbnails::-webkit-scrollbar {
    display: none;
}

.art-thumb {
    flex-shrink: 0;
    width: 70px;
    height: 70px;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    opacity: 0.5;
    transition: var(--art-transition-fast);
    border: 2px solid transparent;
}

.art-thumb:hover,
.art-thumb.active {
    opacity: 1;
}

.art-thumb.active {
    border-color: var(--art-charcoal);
}

.art-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 缩略图导航箭头 */
.art-thumb-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    background: var(--art-pure-white);
    border: 1px solid var(--art-pearl);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--art-charcoal);
    z-index: 10;
    transition: var(--art-transition-fast);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.art-thumb-nav:hover {
    background: var(--art-charcoal);
    color: var(--art-pure-white);
    border-color: var(--art-charcoal);
}

.art-thumb-nav.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

.art-thumb-prev { left: 0; }
.art-thumb-next { right: 0; }

/* 缩略图数量指示器 */
.art-thumb-counter {
    text-align: center;
    margin-top: 8px;
    font-size: 12px;
    color: var(--art-gray-light);
    letter-spacing: 0.05em;
}

.art-thumb-counter .current {
    color: var(--art-charcoal);
    font-weight: 500;
}

/* 缩略图滑动指示器 */
.art-thumbnails-hint {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 40px;
    background: linear-gradient(to right, transparent, var(--art-white));
    pointer-events: none;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.art-thumbnails-hint.hidden {
    opacity: 0;
}

/* === 产品信息 === */
.art-product-info {
    padding-top: 20px;
}

.art-product-category {
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--art-gray);
    margin-bottom: 16px;
}

.art-product-title {
    font-size: 42px;
    font-weight: 300;
    letter-spacing: -0.5px;
    color: var(--art-black);
    margin: 0 0 24px 0;
    line-height: 1.2;
}

.art-product-excerpt {
    font-size: 16px;
    line-height: 1.8;
    color: var(--art-gray);
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--art-pearl);
}

/* === 产品参数 === */
.art-specs {
    margin-bottom: 40px;
}

.art-spec-item {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--art-pearl);
    transition: var(--art-transition-fast);
}

.art-spec-item:hover {
    padding-left: 10px;
    background: linear-gradient(90deg, rgba(0,0,0,0.02), transparent);
}

.art-spec-label {
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--art-gray-light);
}

.art-spec-value {
    font-size: 15px;
    color: var(--art-charcoal);
    font-weight: 500;
}

/* === 联系按钮 === */
.art-contact-buttons {
    display: flex;
    gap: 16px;
    margin-top: 50px;
}

.art-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 32px;
    font-size: 13px;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-decoration: none;
    border: none;
    border-radius: 0;
    cursor: pointer;
    transition: var(--art-transition-medium);
    position: relative;
    overflow: hidden;
}

.art-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.art-btn:hover::before {
    left: 100%;
}

.art-btn-primary {
    background: var(--art-black);
    color: var(--art-pure-white);
}

.art-btn-primary:hover {
    background: var(--art-charcoal);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.art-btn-secondary {
    background: transparent;
    color: var(--art-charcoal);
    border: 1px solid var(--art-charcoal);
}

.art-btn-secondary:hover {
    background: var(--art-charcoal);
    color: var(--art-pure-white);
}

/* === 艺术化佩戴对比组件 === */
.art-comparison-section {
    padding: 150px 0;
    background: var(--art-black);
    position: relative;
    overflow: hidden;
}

.art-comparison-title {
    text-align: center;
    margin-bottom: 80px;
}

.art-comparison-title h2 {
    font-size: 14px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--art-gray);
    margin: 0 0 16px 0;
    font-weight: 400;
}

.art-comparison-title p {
    font-size: 36px;
    font-weight: 200;
    color: var(--art-pure-white);
    margin: 0;
    letter-spacing: -0.5px;
}

.art-comparison-container {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.art-comparison-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border-radius: 50%;
    overflow: hidden;
    cursor: ew-resize;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

.art-comparison-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.art-comparison-before {
    clip-path: inset(0 50% 0 0);
}

.art-comparison-after {
    clip-path: inset(0 0 0 50%);
}

.art-comparison-slider {
    position: absolute;
    top: 0;
    left: 50%;
    width: 3px;
    height: 100%;
    background: var(--art-pure-white);
    transform: translateX(-50%);
    cursor: ew-resize;
    z-index: 10;
}

.art-comparison-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: var(--art-pure-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: var(--art-transition-fast);
}

.art-comparison-handle:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.art-comparison-handle svg {
    width: 24px;
    height: 24px;
    color: var(--art-charcoal);
}

.art-comparison-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding: 0 20px;
}

.art-comparison-label {
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--art-gray);
}

/* === 产品描述区域 === */
.art-description-section {
    padding: 150px 0;
    background: var(--art-pure-white);
}

.art-section-header {
    text-align: center;
    margin-bottom: 80px;
}

.art-section-header h2 {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--art-gray-light);
    margin: 0 0 16px 0;
    font-weight: 400;
}

.art-section-header p {
    font-size: 32px;
    font-weight: 200;
    color: var(--art-black);
    margin: 0;
}

.art-description-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 17px;
    line-height: 2;
    color: var(--art-gray);
}

.art-description-content p {
    margin-bottom: 30px;
}

/* === 完整参数表格 === */
.art-params-section {
    padding: 150px 0;
    background: var(--art-white);
}

.art-params-table {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0 40px;
}

.art-params-row {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--art-pearl);
    transition: var(--art-transition-fast);
    padding: 20px 0;
}

.art-params-row:hover {
    background: rgba(0, 0, 0, 0.02);
}

.art-params-label,
.art-params-value {
    padding: 0;
}

.art-params-label {
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--art-gray-light);
    margin-bottom: 8px;
}

.art-params-value {
    font-size: 16px;
    color: var(--art-charcoal);
}

/* === 相关产品 === */
.art-related-section {
    padding: 150px 0;
    background: var(--art-pearl);
}

.art-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 80px;
}

.art-related-card {
    background: var(--art-pure-white);
    text-decoration: none;
    transition: var(--art-transition-medium);
    display: block;
}

.art-related-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.1);
}

.art-related-image {
    aspect-ratio: 1;
    overflow: hidden;
    background: var(--art-white);
}

.art-related-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--art-transition-slow);
}

.art-related-card:hover .art-related-image img {
    transform: scale(1.05);
}

.art-related-info {
    padding: 30px;
}

.art-related-title {
    font-size: 18px;
    font-weight: 400;
    color: var(--art-charcoal);
    margin: 0 0 10px 0;
    line-height: 1.4;
}

.art-related-link {
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--art-gray);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--art-transition-fast);
}

.art-related-card:hover .art-related-link {
    color: var(--art-black);
    gap: 12px;
}

/* === 响应式设计 === */
@media (max-width: 1200px) {
    .art-container {
        padding: 0 40px;
    }

    .art-product-grid {
        gap: 60px;
    }
}

@media (max-width: 1024px) {
    .art-product-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

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

    .art-related-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .art-product-page {
        padding-top: 0;
    }

    .art-product-detail {
        padding: 20px 0 40px;
    }

    .art-container {
        padding: 0 12px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .art-product-grid {
        display: block !important;
    }

    .art-gallery {
        position: relative;
        top: 0;
        margin-bottom: 24px;
    }

    .art-main-image-container {
        margin-bottom: 10px;
        aspect-ratio: 1;
    }

    .art-gallery-nav {
        width: 32px;
        height: 32px;
        font-size: 14px;
        opacity: 1;
    }

    .art-gallery-prev { left: 8px; }
    .art-gallery-next { right: 8px; }

    .art-thumbnails {
        gap: 6px;
    }

    .art-thumb {
        width: 50px;
        height: 50px;
    }

    .art-product-info {
        padding-top: 0;
    }

    .art-product-category {
        font-size: 10px;
        letter-spacing: 2px;
        margin-bottom: 8px;
    }

    .art-product-title {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .art-product-excerpt {
        font-size: 13px;
        line-height: 1.6;
        margin-bottom: 20px;
        padding-bottom: 20px;
    }

    .art-specs {
        margin-bottom: 20px;
    }

    .art-spec-item {
        padding: 10px 0;
    }

    .art-spec-label {
        font-size: 10px;
    }

    .art-spec-value {
        font-size: 12px;
    }

    .art-contact-buttons {
        flex-direction: column;
        gap: 10px;
        margin-top: 24px;
    }

    .art-btn {
        padding: 14px 20px;
        font-size: 12px;
        letter-spacing: 1px;
    }

    /* 对比组件 */
    .art-comparison-section,
    .art-description-section,
    .art-params-section,
    .art-related-section {
        padding: 40px 0;
    }

    .art-comparison-title {
        margin-bottom: 30px;
    }

    .art-comparison-title h2 {
        font-size: 11px;
        letter-spacing: 2px;
        margin-bottom: 8px;
    }

    .art-comparison-title p {
        font-size: 20px;
    }

    .art-comparison-wrapper {
        max-width: 100%;
        border-radius: 16px;
    }

    .art-comparison-handle {
        width: 40px;
        height: 40px;
    }

    .art-comparison-handle svg {
        width: 16px;
        height: 16px;
    }

    .art-comparison-labels {
        margin-top: 20px;
    }

    .art-comparison-label {
        font-size: 10px;
        letter-spacing: 2px;
    }

    /* 参数表格 */
    .art-section-header {
        margin-bottom: 30px;
    }

    .art-section-header h2 {
        font-size: 10px;
        letter-spacing: 2px;
    }

    .art-section-header p {
        font-size: 18px;
    }

    .art-params-table {
        grid-template-columns: repeat(2, 1fr) !important;
        display: grid !important;
        gap: 0 16px !important;
    }

    .art-params-row {
        padding: 12px 0;
        display: flex !important;
        flex-direction: column !important;
    }

    .art-params-label {
        font-size: 10px;
        margin-bottom: 4px;
    }

    .art-params-value {
        font-size: 13px;
    }

    /* 描述内容 */
    .art-description-content {
        font-size: 13px;
        line-height: 1.7;
    }

    /* 相关产品 */
    .art-related-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 10px;
        margin-top: 30px;
    }

    .art-related-info {
        padding: 12px;
    }

    .art-related-title {
        font-size: 12px;
        margin-bottom: 4px;
    }

    .art-related-link {
        font-size: 9px;
        letter-spacing: 1px;
    }
}

@media (max-width: 480px) {
    .art-product-page {
        padding-top: 56px;
    }

    .art-hero-section {
        min-height: 300px;
    }

    .art-hero-title {
        font-size: 22px;
    }

    .art-hero-subtitle {
        font-size: 12px;
    }

    .art-container {
        padding: 0 12px;
    }

    .art-product-title {
        font-size: 20px;
    }

    .art-product-excerpt {
        font-size: 13px;
    }

    .art-thumb {
        width: 50px;
        height: 50px;
    }

    .art-btn {
        padding: 12px 20px;
        font-size: 11px;
    }

    .art-comparison-title p {
        font-size: 20px;
    }

    .art-section-header p {
        font-size: 18px;
    }

    .art-related-grid {
        gap: 10px;
    }

    .art-related-info {
        padding: 10px;
    }

    .art-related-title {
        font-size: 12px;
        line-height: 1.3;
    }

    .art-related-link {
        font-size: 9px;
    }
}

/* === 滚动动画触发类 === */
.art-fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--art-easing), transform 0.8s var(--art-easing);
}

.art-fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.art-fade-in-delay-1 { transition-delay: 0.1s; }
.art-fade-in-delay-2 { transition-delay: 0.2s; }
.art-fade-in-delay-3 { transition-delay: 0.3s; }

/* === 隐藏默认滚动条美化 === */
.art-product-page::-webkit-scrollbar {
    width: 8px;
}

.art-product-page::-webkit-scrollbar-track {
    background: var(--art-white);
}

.art-product-page::-webkit-scrollbar-thumb {
    background: var(--art-silver);
    border-radius: 4px;
}

.art-product-page::-webkit-scrollbar-thumb:hover {
    background: var(--art-gray);
}

/* === 强制参数两列布局 === */
.art-params-table {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0 40px !important;
}

@media (max-width: 768px) {
    .art-params-table {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0 12px !important;
    }
}