/* ========================================
   3D打印艺术工坊 - 主样式表
   ======================================== */

/* CSS Variables */
:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    
    --font-primary: 'Poppins', 'Noto Sans SC', 'Noto Sans JP', 'Noto Sans KR', sans-serif;
    --font-display: 'Playfair Display', 'Noto Sans SC', 'Noto Sans JP', 'Noto Sans KR', serif;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
    
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--color-black);
    background: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Custom Cursor */
.custom-cursor {
    position: fixed;
    width: 12px;
    height: 12px;
    background: var(--color-black);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: difference;
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease;
}

.cursor-ring {
    position: fixed;
    width: 32px;
    height: 32px;
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: all 0.15s ease;
}

body:hover .custom-cursor,
body:hover .cursor-ring {
    opacity: 1;
}

/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--color-black);
    z-index: 9997;
    width: 0%;
    transition: width 0.1s ease;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    inset: 0;
    background: var(--color-black);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: var(--color-white);
}

.loading-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.loading-bar {
    width: 200px;
    height: 2px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto 1rem;
}

.loading-progress {
    height: 100%;
    background: var(--color-white);
    width: 0%;
    transition: width 0.1s ease;
}

.loading-percent {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 1.5rem;
}

.loading-dots {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: var(--color-white);
    border-radius: 50%;
    animation: loading-dot 1s ease-in-out infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes loading-dot {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.5); opacity: 1; }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: all var(--transition-normal);
}

.header-transparent {
    background: transparent;
}

.header-scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Navigation */
.nav-desktop {
    display: none;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-600);
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-black);
    transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-black);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.lang-btn:hover {
    background: var(--color-gray-100);
}

.lang-flag {
    font-size: 1rem;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 0.5rem;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.lang-selector:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: background var(--transition-fast);
}

.lang-option:hover,
.lang-option.active {
    background: var(--color-gray-100);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background: var(--color-gray-800);
}

.btn-outline {
    border: 2px solid var(--color-black);
    color: var(--color-black);
}

.btn-outline:hover {
    background: var(--color-black);
    color: var(--color-white);
}

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

.btn-white:hover {
    background: var(--color-gray-100);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.btn-full {
    width: 100%;
}

.btn-magnetic {
    position: relative;
    transition: transform 0.2s ease-out;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    width: 40px;
    height: 40px;
    justify-content: center;
    align-items: center;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-black);
    transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.mobile-menu-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
}

.mobile-menu-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 320px;
    height: 100%;
    background: var(--color-white);
    padding: 6rem 1.5rem 2rem;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    overflow-y: auto;
}

.mobile-menu.active .mobile-menu-panel {
    transform: translateX(0);
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.mobile-nav-link {
    padding: 1rem 0;
    font-size: 1.125rem;
    font-weight: 500;
    border-bottom: 1px solid var(--color-gray-100);
    transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--color-gray-600);
}

.mobile-lang {
    margin-bottom: 2rem;
}

.mobile-lang p {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: 0.75rem;
}

.mobile-lang-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.mobile-lang-option {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.mobile-lang-option.active,
.mobile-lang-option:hover {
    background: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

/* Section Base */
section {
    position: relative;
}

.section-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-label {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    color: var(--color-gray-500);
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.section-desc {
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 1rem auto 0;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(to bottom, var(--color-white), var(--color-gray-100));
    overflow: hidden;
    padding-top: 80px;
}

.hero-grid-bg {
    position: absolute;
    inset: 0;
    opacity: 0.05;
    background-image: 
        linear-gradient(var(--color-black) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-black) 1px, transparent 1px);
    background-size: 50px 50px;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,0.1);
}

.floating-circle-1 {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 5%;
    animation: float 10s ease-in-out infinite;
}

.floating-circle-2 {
    width: 120px;
    height: 120px;
    bottom: 20%;
    right: 10%;
    animation: float 15s ease-in-out infinite reverse;
}

.floating-dot {
    width: 16px;
    height: 16px;
    background: rgba(0,0,0,0.1);
    top: 30%;
    right: 25%;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.5); opacity: 0.6; }
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    width: 100%;
}

.hero-grid {
    display: grid;
    gap: 3rem;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-label {
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    color: var(--color-gray-500);
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    overflow: hidden;
}

.title-line span {
    display: inline-block;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 500px;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2.5rem;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-top: 0.25rem;
}

/* Hero Showcase */
.hero-showcase {
    position: relative;
    height: 400px;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

.showcase-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.25rem;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(4px);
    padding: 0.25rem;
    border-radius: var(--radius-full);
    z-index: 10;
}

.toggle-btn {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-btn.active {
    background: var(--color-black);
    color: var(--color-white);
}

.showcase-content {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.showcase-3d {
    display: none;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    perspective: 1000px;
}

.showcase-3d.active {
    display: flex;
}

.vase-3d {
    position: relative;
    animation: vase-float 6s ease-in-out infinite;
}

.vase-black {
    animation-delay: 0s;
}

.vase-white {
    animation-delay: -3s;
}

@keyframes vase-float {
    0%, 100% { transform: translateY(0) rotateY(0deg); }
    50% { transform: translateY(-15px) rotateY(10deg); }
}

.vase-body {
    width: 60px;
    height: 150px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.1), transparent);
    border-radius: 30% 30% 50% 50%;
    position: relative;
}

.vase-black .vase-body {
    background: linear-gradient(90deg, #1a1a1a, #333, #1a1a1a);
}

.vase-white .vase-body {
    background: linear-gradient(90deg, #e5e5e5, #fff, #e5e5e5);
}

.vase-rings {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
}

.vase-rings span {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    height: 3px;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-full);
}

.vase-black .vase-rings span {
    background: rgba(255,255,255,0.2);
}

.vase-rings span:nth-child(1) { top: 20%; width: 70px; }
.vase-rings span:nth-child(2) { top: 35%; width: 80px; }
.vase-rings span:nth-child(3) { top: 50%; width: 85px; }
.vase-rings span:nth-child(4) { top: 65%; width: 80px; }
.vase-rings span:nth-child(5) { top: 80%; width: 70px; }

.showcase-image {
    display: none;
    width: 100%;
    height: 100%;
    padding: 2rem;
    animation: float 6s ease-in-out infinite;
}

.showcase-image.active {
    display: block;
}

.showcase-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

.showcase-hint {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-gray-400);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-gray-400);
    animation: bounce 1.5s ease-in-out infinite;
}

.scroll-indicator span {
    font-size: 0.625rem;
    letter-spacing: 0.2em;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* About Section */
.about {
    background: var(--color-white);
}

.about-bg {
    position: absolute;
    inset: 0;
    opacity: 0.02;
    background-image: radial-gradient(circle, var(--color-black) 1px, transparent 1px);
    background-size: 30px 30px;
}

.about-grid {
    display: grid;
    gap: 3rem;
    margin-bottom: 4rem;
}

.about-image-wrapper {
    position: relative;
}

.about-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.image-frame {
    position: absolute;
    inset: 1rem;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-lg);
    pointer-events: none;
}

.corner-accent {
    position: absolute;
    width: 32px;
    height: 32px;
    border-color: rgba(255,255,255,0.5);
    pointer-events: none;
}

.corner-accent.top-left {
    top: 1rem;
    left: 1rem;
    border-top: 2px solid;
    border-left: 2px solid;
}

.corner-accent.top-right {
    top: 1rem;
    right: 1rem;
    border-top: 2px solid;
    border-right: 2px solid;
}

.corner-accent.bottom-left {
    bottom: 1rem;
    left: 1rem;
    border-bottom: 2px solid;
    border-left: 2px solid;
}

.corner-accent.bottom-right {
    bottom: 1rem;
    right: 1rem;
    border-bottom: 2px solid;
    border-right: 2px solid;
}

.about-content {
    position: relative;
}

.about-lead {
    font-size: 1.25rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.about-lead .highlight {
    font-weight: 600;
}

.about-text {
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: 2rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.feature-card {
    padding: 1.25rem;
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.feature-card:hover {
    background: var(--color-black);
    color: var(--color-white);
    transform: translateY(-4px);
}

.feature-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

.feature-card h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.feature-card p {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.feature-card:hover p {
    color: var(--color-gray-300);
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    background: var(--color-black);
    color: var(--color-white);
    padding: 2rem;
    border-radius: var(--radius-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-text {
    font-size: 0.75rem;
    color: var(--color-gray-400);
}

/* Products Section */
.products {
    background: var(--color-gray-100);
    overflow: hidden;
}

.products-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(to left, rgba(0,0,0,0.02), transparent);
}

.products-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.product-card {
    position: relative;
}

.product-image {
    position: relative;
    aspect-ratio: 3/4;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-white);
    margin-bottom: 1rem;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.btn-view {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--color-white);
    color: var(--color-black);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transform: scale(0.9);
    transition: transform var(--transition-fast);
}

.product-card:hover .btn-view {
    transform: scale(1);
}

.btn-like {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(4px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-like:hover {
    transform: scale(1.1);
}

.btn-like svg {
    transition: all var(--transition-fast);
}

.btn-like.active svg,
.btn-like:hover svg {
    fill: #ef4444;
    stroke: #ef4444;
}

.product-tag {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(0,0,0,0.8);
    color: var(--color-white);
    font-size: 0.625rem;
    border-radius: var(--radius-full);
}

.product-info h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.25rem;
}

.product-price {
    font-weight: 600;
}

.product-info p {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.products-cta {
    text-align: center;
}

/* Materials Showcase */
.materials-showcase {
    margin-top: 4rem;
    background: var(--color-black);
    color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 2rem;
}

.materials-content {
    display: grid;
    gap: 2rem;
}

.materials-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.materials-text p {
    color: var(--color-gray-400);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.material-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.material-tag {
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    transition: background var(--transition-fast);
}

.material-tag:hover {
    background: rgba(255,255,255,0.2);
}

.materials-colors {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.color-item {
    text-align: center;
}

.color-swatch {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    margin-bottom: 0.5rem;
    box-shadow: var(--shadow-md);
}

.color-item span {
    font-size: 0.625rem;
    color: var(--color-gray-400);
}

/* Services Section */
.services {
    background: var(--color-white);
    overflow: hidden;
}

.services-bg {
    position: absolute;
    inset: 0;
}

.services-bg::before {
    content: '';
    position: absolute;
    top: 25%;
    left: 25%;
    width: 400px;
    height: 400px;
    background: var(--color-black);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.05;
}

.services-bg::after {
    content: '';
    position: absolute;
    bottom: 25%;
    right: 25%;
    width: 400px;
    height: 400px;
    background: var(--color-gray-400);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.05;
}

.services-accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 4rem;
}

.service-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-slow);
}

.service-card.active {
    flex: 2;
}

.service-image {
    position: relative;
    height: 200px;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-card:hover .service-image img {
    transform: scale(1.1);
}

.service-gradient {
    position: absolute;
    inset: 0;
    opacity: 0.6;
    mix-blend-mode: multiply;
}

.gradient-blue { background: linear-gradient(to top, #3b82f6, #8b5cf6); }
.gradient-orange { background: linear-gradient(to top, #f97316, #dc2626); }
.gradient-green { background: linear-gradient(to top, #22c55e, #14b8a6); }
.gradient-pink { background: linear-gradient(to top, #ec4899, #e11d48); }

.service-content {
    position: absolute;
    inset: 0;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    color: var(--color-white);
    background: linear-gradient(to top, rgba(0,0,0,0.8), rgba(0,0,0,0.4), transparent);
}

.service-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.icon-blue { background: linear-gradient(135deg, #3b82f6, #8b5cf6); }
.icon-orange { background: linear-gradient(135deg, #f97316, #dc2626); }
.icon-green { background: linear-gradient(135deg, #22c55e, #14b8a6); }
.icon-pink { background: linear-gradient(135deg, #ec4899, #e11d48); }

.service-subtitle {
    font-size: 0.625rem;
    letter-spacing: 0.1em;
    opacity: 0.7;
    text-transform: uppercase;
}

.service-text h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.service-desc {
    font-size: 0.875rem;
    opacity: 0.8;
    line-height: 1.6;
    margin-bottom: 1rem;
    display: none;
}

.service-card.active .service-desc {
    display: block;
}

.service-features {
    display: none;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.service-card.active .service-features {
    display: flex;
}

.feature-tag {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    font-size: 0.625rem;
}

.service-text .btn {
    display: none;
}

.service-card.active .btn {
    display: inline-flex;
}

.service-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(4px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* Process Section */
.process-section {
    margin-bottom: 4rem;
}

.process-title {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 24px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-gray-200);
    display: none;
}

.process-step {
    text-align: center;
}

.step-circle {
    width: 48px;
    height: 48px;
    background: var(--color-black);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 0.75rem;
}

.process-step h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.process-step p {
    font-size: 0.625rem;
    color: var(--color-gray-500);
}

/* Services CTA */
.services-cta {
    text-align: center;
}

.cta-box {
    background: linear-gradient(135deg, var(--color-black), var(--color-gray-800));
    color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 3rem 2rem;
}

.cta-box h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.cta-box p {
    color: var(--color-gray-400);
    margin-bottom: 1.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Testimonials Section */
.testimonials {
    background: var(--color-gray-100);
    overflow: hidden;
}

.testimonials-bg {
    position: absolute;
    inset: 0;
}

.testimonials-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 25%;
    width: 400px;
    height: 400px;
    background: var(--color-black);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.05;
}

.testimonials-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 25%;
    width: 400px;
    height: 400px;
    background: var(--color-gray-300);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.testimonials-carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.carousel-container {
    position: relative;
    min-height: 400px;
}

.testimonial-card {
    position: absolute;
    inset: 0;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    transform: translateX(50px) rotateY(15deg);
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
}

.testimonial-card.active {
    opacity: 1;
    transform: translateX(0) rotateY(0);
    pointer-events: auto;
}

.testimonial-quote {
    color: var(--color-gray-200);
    margin-bottom: 1rem;
}

.testimonial-content {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-gray-700);
    margin-bottom: 1.5rem;
}

.testimonial-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1.5rem;
}

.star {
    color: #fbbf24;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.author-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 600;
}

.author-name-en {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.author-role {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.testimonial-project {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
}

/* Carousel Controls */
.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.carousel-btn {
    width: 48px;
    height: 48px;
    background: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.carousel-btn:hover {
    background: var(--color-black);
    color: var(--color-white);
}

.carousel-dots {
    display: flex;
    gap: 0.5rem;
}

.carousel-dot {
    width: 8px;
    height: 8px;
    background: var(--color-gray-300);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.carousel-dot.active {
    width: 32px;
    background: var(--color-black);
}

/* Client Logos */
.client-logos {
    text-align: center;
}

.logos-title {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-bottom: 1.5rem;
}

.logos-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    opacity: 0.5;
}

.logos-grid span {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.logos-grid span:hover {
    color: var(--color-gray-600);
}

/* Contact Section */
.contact {
    background: var(--color-black);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.contact-bg {
    position: absolute;
    inset: 0;
    opacity: 0.5;
}

.contact-bg canvas {
    width: 100%;
    height: 100%;
}

.contact-header .section-label,
.contact-header .section-title {
    color: var(--color-white);
}

.contact-header .section-desc {
    color: var(--color-gray-400);
}

.contact-grid {
    display: grid;
    gap: 3rem;
    position: relative;
    z-index: 1;
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 2px solid rgba(255,255,255,0.2);
    padding: 1rem 0;
    color: var(--color-white);
    font-size: 1rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-white);
}

.form-group textarea {
    min-height: 120px;
    resize: none;
}

.form-group label {
    position: absolute;
    left: 0;
    top: 1rem;
    color: rgba(255,255,255,0.5);
    pointer-events: none;
    transition: all var(--transition-fast);
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -0.5rem;
    font-size: 0.75rem;
    color: var(--color-white);
}

.input-line {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition-fast);
}

.form-group input:focus ~ .input-line,
.form-group textarea:focus ~ .input-line {
    left: 0;
    width: 100%;
}

.required {
    color: #ef4444;
}

.btn-submit {
    position: relative;
    background: var(--color-white);
    color: var(--color-black);
    padding: 1rem 2rem;
    overflow: hidden;
}

.btn-submit:hover {
    background: var(--color-gray-100);
}

.btn-submit .btn-loading,
.btn-submit .btn-success {
    display: none;
    position: absolute;
    inset: 0;
    align-items: center;
    justify-content: center;
}

.btn-submit.loading .btn-text,
.btn-submit.loading .btn-icon {
    opacity: 0;
}

.btn-submit.loading .btn-loading {
    display: flex;
}

.btn-submit.success {
    background: #22c55e;
    color: var(--color-white);
}

.btn-submit.success .btn-text,
.btn-submit.success .btn-icon {
    opacity: 0;
}

.btn-submit.success .btn-success {
    display: flex;
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Contact Info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-item {
    display: flex;
    gap: 1rem;
}

.info-icon {
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-text h4 {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.info-text p {
    color: var(--color-white);
}

.info-text span {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.social-section h4,
.lang-section h4 {
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.social-links {
    display: flex;
    gap: 0.5rem;
}

.social-link {
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    transition: background var(--transition-fast);
}

.social-link:hover {
    background: rgba(255,255,255,0.2);
}

.lang-list {
    display: flex;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-gray-400);
}

/* Footer */
.footer {
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-100);
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 4rem 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.footer-brand {
    grid-column: span 2;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-desc {
    color: var(--color-gray-600);
    font-size: 0.875rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    max-width: 300px;
}

.footer-social {
    display: flex;
    gap: 0.5rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--color-gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-black);
    color: var(--color-white);
}

.footer-links h4 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
    position: relative;
}

.footer-links a::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background: var(--color-black);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-black);
    padding-left: 12px;
}

.footer-links a:hover::before {
    opacity: 1;
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid var(--color-gray-100);
}

.footer-bottom-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    text-align: center;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.footer-copyright svg {
    color: #ef4444;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
}

.footer-legal a {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--color-black);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--color-black);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-fast);
    z-index: 50;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-gray-800);
    transform: translateY(-4px);
}

/* Animation Classes */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

[data-animate="slide-up"] {
    transform: translateY(50px);
}

[data-animate="slide-right"] {
    transform: translateX(-50px);
}

[data-animate="slide-left"] {
    transform: translateX(50px);
}

[data-animate="scale-in"] {
    transform: scale(1.2);
}

[data-animate="fade-up"] {
    transform: translateY(20px);
}

/* Responsive Styles */
@media (min-width: 640px) {
    .section-title {
        font-size: 3rem;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-bar {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .materials-colors {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .process-timeline {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-brand {
        grid-column: span 1;
    }
}

@media (min-width: 768px) {
    .nav-desktop {
        display: flex;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .section-container {
        padding: 6rem 2rem;
    }
    
    .hero-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
    
    .hero-showcase {
        height: 500px;
    }
    
    .about-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
    
    .features-grid {
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .products-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-end;
    }
    
    .services-accordion {
        flex-direction: row;
        height: 500px;
    }
    
    .service-card {
        flex: 1;
    }
    
    .service-card.active {
        flex: 2;
    }
    
    .service-image {
        height: 100%;
    }
    
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
    
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-bottom-container {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (min-width: 1024px) {
    .section-title {
        font-size: 3.5rem;
    }
    
    .hero-title {
        font-size: 4.5rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .materials-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .custom-cursor,
    .cursor-ring {
        display: none !important;
    }
}

/* Touch Device Adjustments */
@media (hover: none) {
    .custom-cursor,
    .cursor-ring {
        display: none !important;
    }
}