/* 牛战士官网样式 */

/* CSS 变量 */
:root {
    --primary: #8B4513;
    --secondary: #D4A574;
    --accent: #5D2E0C;
    --dark: #1a1a1a;
    --black: #000;
    --white: #fff;
    --text-muted: #666;
    
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.1);
    
    --transition: all 0.3s ease;
}

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

ul, ol {
    list-style: none;
}

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

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(139, 69, 19, 0.1);
    z-index: 1000;
    padding: 0 var(--space-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-menu a {
    font-weight: 500;
    color: var(--dark);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.nav-menu a:hover {
    color: var(--primary);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

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

/* Hero区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px var(--space-md) 80px;
    background: linear-gradient(135deg, #faf8f5 0%, #f5f0e8 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(212, 165, 116, 0.15) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    color: var(--accent);
}

.hero-content h1 span {
    color: var(--primary);
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: var(--space-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(139, 69, 19, 0.3);
}

.btn-primary:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 69, 19, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-height: 500px;
    filter: drop-shadow(0 20px 40px rgba(139, 69, 19, 0.2));
    animation: fadeInUp 0.8s ease both;
}

/* 统计数据 */
.stats {
    padding: var(--space-xl) 0;
    background: var(--white);
    border-bottom: 1px solid rgba(139, 69, 19, 0.1);
}

.stats-inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-xs);
}

.stat-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 通用区块 */
.section {
    padding: var(--space-xl) var(--space-md);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: var(--space-sm);
}

.section-title p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* 产品系列 */
.products {
    background: #faf8f5;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #faf8f5 0%, #f0ebe0 100%);
    padding: var(--space-md);
}

.product-image img {
    max-height: 100%;
    object-fit: contain;
}

.product-info {
    padding: var(--space-md);
}

.product-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.product-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* 品牌故事 */
.story {
    background: var(--white);
}

.story-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.story-image img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.story-text h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: var(--space-md);
}

.story-text p {
    color: var(--text-muted);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

/* 产品特点 */
.features {
    background: linear-gradient(135deg, #faf8f5 0%, #f5f0e8 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

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

/* 饮用场景 */
.scenes {
    background: var(--white);
}

.scenes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.scene-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.scene-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.scene-card:hover img {
    transform: scale(1.05);
}

.scene-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg);
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: var(--white);
}

.scene-overlay h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.scene-overlay p {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* 购买渠道 */
.buy {
    background: linear-gradient(135deg, #faf8f5 0%, #f5f0e8 100%);
}

.channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.channel-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.channel-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.channel-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.channel-icon svg {
    width: 36px;
    height: 36px;
    color: var(--white);
}

.channel-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.channel-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

/* 页脚 */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--space-xl) var(--space-md) var(--space-lg);
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--secondary);
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-md);
}

.footer-links h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--white);
}

.footer-links ul li {
    margin-bottom: var(--space-xs);
}

.footer-links ul li a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

.footer-links ul li a:hover {
    color: var(--secondary);
}

.footer-bottom {
\n\
/* HTML模板兼容别名 */\
.footer-content {\
    display: grid;\
    grid-template-columns: 2fr 1fr 1fr 1fr;\
    gap: var(--space-xl);\
    margin-bottom: var(--space-xl);\
}\
\
.footer-section h4 {\
    font-size: 1rem;\
    font-weight: 600;\
    margin-bottom: var(--space-md);\
    color: var(--white);\
}\
\
.footer-section ul {\
    list-style: none;\
    padding: 0;\
    margin: 0;\
}\
\
.footer-section ul li {\
    margin-bottom: var(--space-xs);\
}\
\
.footer-section ul li a {\
    color: rgba(255,255,255,0.7);\
    font-size: 0.9rem;\
    text-decoration: none;\
    transition: color 0.3s;\
}\
\
.footer-section ul li a:hover {\
    color: var(--secondary);\
}
    border-top: 1px solid rgba(255,255,255,0.1);
\n\
/* HTML模板兼容别名 */\
.footer-content {\
    display: grid;\
    grid-template-columns: 2fr 1fr 1fr 1fr;\
    gap: var(--space-xl);\
    margin-bottom: var(--space-xl);\
}\
\
.footer-section h4 {\
    font-size: 1rem;\
    font-weight: 600;\
    margin-bottom: var(--space-md);\
    color: var(--white);\
}\
\
.footer-section ul {\
    list-style: none;\
    padding: 0;\
    margin: 0;\
}\
\
.footer-section ul li {\
    margin-bottom: var(--space-xs);\
}\
\
.footer-section ul li a {\
    color: rgba(255,255,255,0.7);\
    font-size: 0.9rem;\
    text-decoration: none;\
    transition: color 0.3s;\
}\
\
.footer-section ul li a:hover {\
    color: var(--secondary);\
}
    padding-top: var(--space-md);
\n\
/* HTML模板兼容别名 */\
.footer-content {\
    display: grid;\
    grid-template-columns: 2fr 1fr 1fr 1fr;\
    gap: var(--space-xl);\
    margin-bottom: var(--space-xl);\
}\
\
.footer-section h4 {\
    font-size: 1rem;\
    font-weight: 600;\
    margin-bottom: var(--space-md);\
    color: var(--white);\
}\
\
.footer-section ul {\
    list-style: none;\
    padding: 0;\
    margin: 0;\
}\
\
.footer-section ul li {\
    margin-bottom: var(--space-xs);\
}\
\
.footer-section ul li a {\
    color: rgba(255,255,255,0.7);\
    font-size: 0.9rem;\
    text-decoration: none;\
    transition: color 0.3s;\
}\
\
.footer-section ul li a:hover {\
    color: var(--secondary);\
}
    text-align: center;
\n\
/* HTML模板兼容别名 */\
.footer-content {\
    display: grid;\
    grid-template-columns: 2fr 1fr 1fr 1fr;\
    gap: var(--space-xl);\
    margin-bottom: var(--space-xl);\
}\
\
.footer-section h4 {\
    font-size: 1rem;\
    font-weight: 600;\
    margin-bottom: var(--space-md);\
    color: var(--white);\
}\
\
.footer-section ul {\
    list-style: none;\
    padding: 0;\
    margin: 0;\
}\
\
.footer-section ul li {\
    margin-bottom: var(--space-xs);\
}\
\
.footer-section ul li a {\
    color: rgba(255,255,255,0.7);\
    font-size: 0.9rem;\
    text-decoration: none;\
    transition: color 0.3s;\
}\
\
.footer-section ul li a:hover {\
    color: var(--secondary);\
}
    color: rgba(255,255,255,0.5);
\n\
/* HTML模板兼容别名 */\
.footer-content {\
    display: grid;\
    grid-template-columns: 2fr 1fr 1fr 1fr;\
    gap: var(--space-xl);\
    margin-bottom: var(--space-xl);\
}\
\
.footer-section h4 {\
    font-size: 1rem;\
    font-weight: 600;\
    margin-bottom: var(--space-md);\
    color: var(--white);\
}\
\
.footer-section ul {\
    list-style: none;\
    padding: 0;\
    margin: 0;\
}\
\
.footer-section ul li {\
    margin-bottom: var(--space-xs);\
}\
\
.footer-section ul li a {\
    color: rgba(255,255,255,0.7);\
    font-size: 0.9rem;\
    text-decoration: none;\
    transition: color 0.3s;\
}\
\
.footer-section ul li a:hover {\
    color: var(--secondary);\
}
    font-size: 0.85rem;
\n\
/* HTML模板兼容别名 */\
.footer-content {\
    display: grid;\
    grid-template-columns: 2fr 1fr 1fr 1fr;\
    gap: var(--space-xl);\
    margin-bottom: var(--space-xl);\
}\
\
.footer-section h4 {\
    font-size: 1rem;\
    font-weight: 600;\
    margin-bottom: var(--space-md);\
    color: var(--white);\
}\
\
.footer-section ul {\
    list-style: none;\
    padding: 0;\
    margin: 0;\
}\
\
.footer-section ul li {\
    margin-bottom: var(--space-xs);\
}\
\
.footer-section ul li a {\
    color: rgba(255,255,255,0.7);\
    font-size: 0.9rem;\
    text-decoration: none;\
    transition: color 0.3s;\
}\
\
.footer-section ul li a:hover {\
    color: var(--secondary);\
}
}
\n\
/* HTML模板兼容别名 */\
.footer-content {\
    display: grid;\
    grid-template-columns: 2fr 1fr 1fr 1fr;\
    gap: var(--space-xl);\
    margin-bottom: var(--space-xl);\
}\
\
.footer-section h4 {\
    font-size: 1rem;\
    font-weight: 600;\
    margin-bottom: var(--space-md);\
    color: var(--white);\
}\
\
.footer-section ul {\
    list-style: none;\
    padding: 0;\
    margin: 0;\
}\
\
.footer-section ul li {\
    margin-bottom: var(--space-xs);\
}\
\
.footer-section ul li a {\
    color: rgba(255,255,255,0.7);\
    font-size: 0.9rem;\
    text-decoration: none;\
    transition: color 0.3s;\
}\
\
.footer-section ul li a:hover {\
    color: var(--secondary);\
}

/* 动画 */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* 延迟动画 */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* 懒加载图片 */
.lazy-image {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy-image.loaded {
    opacity: 1;
}

/* 图片查看器 */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.9);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.image-viewer.active {
    opacity: 1;
    visibility: visible;
}

.image-viewer img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}

.image-viewer-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.image-viewer-close:hover {
    background: rgba(255,255,255,0.2);
}

.image-viewer-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.image-viewer-nav:hover {
    background: rgba(255,255,255,0.2);
}

.image-viewer-prev {
    left: 20px;
}

.image-viewer-next {
    right: 20px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content p {
        margin: 0 auto var(--space-lg);
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-image img {
        max-height: 350px;
    }
    
    .story-content {
        grid-template-columns: 1fr;
    }
    
    .story-image {
        order: -1;
    }
    
    .footer-inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--space-md);
        gap: var(--space-sm);
        border-bottom: 1px solid rgba(139, 69, 19, 0.1);
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding: 100px var(--space-sm) 60px;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-btns {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .stats-inner {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    
    .section {
        padding: var(--space-lg) var(--space-sm);
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .products-grid,
    .features-grid,
    .channels-grid {
        grid-template-columns: 1fr;
    }
    
    .scenes-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-inner {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .image-viewer-nav {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }
    
    .image-viewer-prev {
        left: 10px;
    }
    
    .image-viewer-next {
        right: 10px;
    }
    
    /* 手机端：产品卡片文字放图片下方，不遮盖 */
    .product-card > div:first-child {
        position: relative !important;
        overflow: visible !important;
    }
    
    .product-card > div:first-child > div[style*="backdrop-filter"] {
        position: relative !important;
        bottom: auto !important;
        left: auto !important;
        right: auto !important;
        margin-top: 15px;
        border-radius: 16px !important;
        background: rgba(139, 69, 19, 0.9) !important;
    }
}

/* 移动端菜单激活状态 */
.nav-menu.mobile-active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--dark);
    padding: var(--space-md);
    border-top: 1px solid rgba(74, 144, 226, 0.2);
    z-index: 999;
}

.nav-menu.mobile-active li {
    margin-bottom: var(--space-sm);
}

.nav-menu.mobile-active a {
    display: block;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
}

.nav-menu.mobile-active a:hover {
    background: rgba(74, 144, 226, 0.1);
}

/* 加载动画 */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.p-xs { padding: var(--space-xs); }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.hidden { display: none !important; }
.visible { display: block !important; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.w-full { width: 100%; }
.h-full { height: 100%; }
.max-w-sm { max-width: 400px; }
.max-w-md { max-width: 600px; }
.max-w-lg { max-width: 800px; }
.max-w-xl { max-width: 1200px; }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: 9999px; }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.bg-primary { background: var(--primary); }
.bg-secondary { background: var(--secondary); }
.bg-accent { background: var(--accent); }
.bg-dark { background: var(--dark); }
.bg-black { background: var(--black); }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-accent { color: var(--accent); }
.text-white { color: var(--white); }
.text-muted { color: var(--text-muted); }

.border-primary { border-color: var(--primary); }
.border-secondary { border-color: var(--secondary); }
.border-accent { border-color: var(--accent); }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

.pointer-events-none { pointer-events: none; }
.pointer-events-auto { pointer-events: auto; }

.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }

.transition-all { transition: all 0.3s ease; }
.transition-transform { transition: transform 0.3s ease; }
.transition-opacity { transition: opacity 0.3s ease; }

.animate-pulse { animation: pulse 2s infinite; }
.animate-float { animation: float 20s ease-in-out infinite; }
.animate-fadeInUp { animation: fadeInUp 0.8s ease both; }
.animate-fadeInRight { animation: fadeInRight 0.8s ease both; }