/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --secondary: #f97316;
    --secondary-dark: #ea580c;
    --accent: #8b5cf6;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 100%);
    --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
    --gradient-card: linear-gradient(180deg, rgba(14, 165, 233, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

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

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

/* ==================== HEADER ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    font-size: 13px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-info {
    display: flex;
    gap: 24px;
}

.contact-info span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-300);
}

.contact-info i {
    color: var(--primary);
}

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

.social-links a {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--gray-300);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 26px;
    font-weight: 800;
    color: white;
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    color: var(--gray-300);
    padding: 10px 20px;
    font-weight: 500;
    font-size: 15px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.nav-links a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.nav-links a.active {
    color: white;
    background: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    padding-top: 100px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 从左到右的渐变，确保左侧文字区域有深色背景 */
    background: linear-gradient(90deg, 
        rgba(15, 23, 42, 1) 0%, 
        rgba(15, 23, 42, 0.9) 35%,
        rgba(15, 23, 42, 0.6) 55%,
        rgba(15, 23, 42, 0.3) 70%,
        transparent 100%);
    z-index: 1;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 60%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(14, 165, 233, 0.2);
    border: 1px solid rgba(14, 165, 233, 0.3);
    border-radius: 100px;
    color: var(--primary-light);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.hero-badge i {
    animation: pulse 2s infinite;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    color: white;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -2px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: var(--gray-400);
    margin-bottom: 40px;
    max-width: 540px;
    line-height: 1.8;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    animation: fadeInUp 0.6s ease 0.4s both;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: white;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-400);
    margin-top: 4px;
}

.hero-image {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 45%;
    max-width: 600px;
    z-index: 0;
}

.hero-image-inner {
    position: relative;
}

.hero-image-inner::before {
    content: '';
    position: absolute;
    inset: -20px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    opacity: 0.3;
    filter: blur(40px);
}

.hero-image-placeholder {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image-placeholder i {
    font-size: 200px;
    color: rgba(14, 165, 233, 0.3);
}

.hero-main-image {
    position: relative;
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
    z-index: 1;
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.5);
    color: white;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    color: white;
}

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

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

.btn-lg {
    padding: 18px 36px;
    font-size: 16px;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

/* ==================== SECTIONS ==================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 100px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 17px;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ==================== FEATURES ==================== */
.features {
    background: var(--gray-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-card);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 28px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--gray-500);
    font-size: 15px;
    line-height: 1.6;
}

/* ==================== CATEGORIES ==================== */
.categories {
    background: white;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.category-card {
    position: relative;
    background: var(--dark);
    border-radius: var(--radius-xl);
    overflow: hidden;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 40px;
    transition: var(--transition);
}

.category-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    z-index: 1;
}

.category-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.category-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 120px;
    color: rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.category-card:hover .category-icon {
    transform: translate(-50%, -50%) scale(1.1);
    color: rgba(255, 255, 255, 0.2);
}

.category-card:hover::after {
    opacity: 0.2;
}

.category-content {
    position: relative;
    z-index: 2;
}

.category-content h3 {
    font-size: 32px;
    font-weight: 800;
    color: white;
    margin-bottom: 12px;
}

.category-content p {
    color: var(--gray-300);
    margin-bottom: 20px;
    font-size: 16px;
}

.category-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-weight: 600;
    font-size: 15px;
}

.category-link i {
    transition: var(--transition);
}

.category-card:hover .category-link i {
    transform: translateX(4px);
}

/* ==================== PRODUCTS ==================== */
.products-section {
    background: var(--gray-50);
}

.filter-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.filter-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 24px;
    background: white;
    border: 2px solid var(--gray-200);
    color: var(--gray-600);
    border-radius: 100px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-100);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.product-image {
    height: 280px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-card);
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-image::before {
    opacity: 1;
}

.product-image i {
    font-size: 80px;
    color: var(--gray-300);
    transition: var(--transition);
}

.product-card:hover .product-image i {
    color: var(--primary);
    transform: scale(1.1);
}

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: var(--gradient-primary);
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-info {
    padding: 28px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-category-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-info h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    line-height: 1.4;
}

.product-info h3 a:hover {
    color: var(--primary);
}

.product-description {
    color: var(--gray-500);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--gray-100);
}

.product-price {
    font-size: 24px;
    font-weight: 800;
    color: var(--secondary);
}

.product-price span {
    font-size: 14px;
    font-weight: 400;
    color: var(--gray-400);
}

/* ==================== PAGINATION ==================== */
.pagination-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 50px;
    padding: 30px 0;
}

.pagination-info {
    color: var(--gray-500);
    font-size: 14px;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pagination-btn {
    min-width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
    background: white;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    text-decoration: none;
}

.pagination-btn:hover:not(.disabled):not(.active) {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.pagination-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow);
}

.pagination-btn.disabled {
    color: var(--gray-300);
    cursor: not-allowed;
    background: var(--gray-50);
}

.pagination-ellipsis {
    padding: 0 8px;
    color: var(--gray-400);
    font-size: 16px;
}

/* ==================== PAGE HEADER ==================== */
.page-header {
    background: var(--gradient-hero);
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(14, 165, 233, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.page-header h1 {
    font-size: 48px;
    font-weight: 800;
    color: white;
    margin-bottom: 12px;
    letter-spacing: -1px;
    position: relative;
}

.page-header p {
    font-size: 18px;
    color: var(--gray-400);
    position: relative;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    font-size: 14px;
    position: relative;
}

.breadcrumb a {
    color: var(--gray-400);
}

.breadcrumb a:hover {
    color: white;
}

.breadcrumb span {
    color: var(--gray-500);
}

/* ==================== PRODUCT DETAIL ==================== */
.product-detail {
    padding: 60px 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.product-gallery {
    position: sticky;
    top: 120px;
}

.main-image {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    border-radius: var(--radius-xl);
    padding: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.main-image i {
    font-size: 180px;
    color: var(--gray-300);
}

.product-info-detail h1 {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.product-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
}

.product-detail-price {
    font-size: 36px;
    font-weight: 800;
    color: var(--secondary);
}

.product-detail-category {
    padding: 8px 16px;
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    text-transform: uppercase;
}

.product-description-detail {
    margin-bottom: 32px;
}

.product-description-detail h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.product-description-detail p {
    color: var(--gray-600);
    line-height: 1.8;
}

.product-features-detail {
    margin-bottom: 32px;
}

.product-features-detail h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.features-list-detail {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    list-style: none;
}

.features-list-detail li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--gray-50);
    border-radius: var(--radius);
    color: var(--gray-700);
    font-size: 14px;
}

.features-list-detail li i {
    color: var(--success);
    font-size: 16px;
}

.specifications-detail {
    margin-bottom: 32px;
}

.specifications-detail h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--gray-100);
}

.specs-table td {
    padding: 14px 0;
}

.specs-table td:first-child {
    color: var(--gray-500);
    width: 40%;
}

.specs-table td:last-child {
    font-weight: 600;
    color: var(--dark);
}

.product-actions-detail {
    display: flex;
    gap: 16px;
    margin-top: 40px;
}

/* ==================== ABOUT PAGE ==================== */
.about-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 80px 0;
}

.about-content h2 {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.about-content p {
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 20px;
}

.values-list {
    list-style: none;
    margin-top: 30px;
}

.values-list li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--gray-100);
}

.values-list li i {
    width: 24px;
    height: 24px;
    background: var(--success);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
    margin-top: 2px;
}

.about-image {
    position: relative;
}

.about-image-inner {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    border-radius: var(--radius-xl);
    padding: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image-inner i {
    font-size: 200px;
    color: var(--primary);
    opacity: 0.3;
}

/* Stats Section */
.stats-section {
    background: var(--dark);
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-box {
    padding: 30px;
}

.stat-box .stat-number {
    font-size: 48px;
    font-weight: 800;
    color: white;
    letter-spacing: -1px;
    margin-bottom: 8px;
}

.stat-box .stat-label {
    font-size: 16px;
    color: var(--gray-400);
}

/* ==================== CONTACT PAGE ==================== */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-form-wrapper {
    background: white;
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-100);
}

.contact-form-wrapper h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.contact-form-wrapper > p {
    color: var(--gray-500);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info-section h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 32px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(8px);
    border-color: var(--primary);
}

.contact-item-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item-icon i {
    font-size: 24px;
    color: white;
}

.contact-item-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.contact-item-content p {
    color: var(--gray-500);
    font-size: 14px;
    line-height: 1.6;
}

/* ==================== CTA SECTION ==================== */
.cta-section {
    background: var(--gradient-primary);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

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

.cta-content h2 {
    font-size: 40px;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.cta-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

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

.cta-section .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--dark);
    color: white;
    padding: 80px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--gray-400);
    line-height: 1.8;
    font-size: 14px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 24px;
    color: white;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: var(--gray-400);
    font-size: 14px;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: white;
    padding-left: 8px;
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--gray-500);
    font-size: 14px;
}

.footer-bottom .admin-link {
    color: var(--gray-500);
    font-size: 13px;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.footer-bottom .admin-link:hover {
    color: var(--primary);
    background: rgba(14, 165, 233, 0.1);
}

/* ==================== ERROR PAGE ==================== */
.error-page {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 160px 0 80px;
}

.error-content {
    max-width: 500px;
}

.error-icon {
    width: 120px;
    height: 120px;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
}

.error-icon i {
    font-size: 60px;
    color: var(--danger);
}

.error-content h1 {
    font-size: 120px;
    font-weight: 800;
    color: var(--gray-200);
    line-height: 1;
    margin-bottom: 16px;
}

.error-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.error-content p {
    color: var(--gray-500);
    margin-bottom: 32px;
}

.error-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 48px;
    }
    
    .hero-image {
        width: 40%;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 140px 0 80px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero h1 {
        font-size: 40px;
    }
    
    .hero p {
        margin: 0 auto 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-image {
        display: none;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .product-detail-grid,
    .about-hero,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-top {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--dark);
        padding: 20px;
        flex-direction: column;
        gap: 8px;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links a {
        display: block;
        padding: 12px 16px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .features-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 36px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .features-list-detail {
        grid-template-columns: 1fr;
    }
    
    .product-actions-detail {
        flex-direction: column;
    }
}