/* 全局设置 */
:root {
    --primary-color: #0f172a;
    /* 深蓝 - 专业感 */
    --accent-color: #0ea5e9;
    /* 天蓝 - 活力/雨水关联 */
    --text-dark: #334155;
    --text-light: #94a3b8;
    --white: #ffffff;
    --bg-light: #f8fafc;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* 导航栏 */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 15px rgba(0, 0, 0, 0.05);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-dark);
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    height: 90vh;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    margin-top: 0;
    /* Override default */
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(15, 23, 42, 0.6), rgba(15, 23, 42, 0.4));
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2.5rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--accent-color);
    color: var(--white);
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn:hover {
    background-color: transparent;
    border-color: var(--white);
    transform: translateY(-2px);
}

/* 分区通用样式 */
section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #475569;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Factory Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    height: 300px;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    padding: 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.gallery-item:hover .caption {
    transform: translateY(0);
}

/* Product Section */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.product-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.product-image {
    height: 320px;
    overflow: hidden;
    background-color: #f1f5f9;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.product-info {
    padding: 1.5rem;
    text-align: center;
}

.product-info h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.product-info p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Contact & CTA */
.cta-section {
    background-color: var(--primary-color);
    color: white;
    border-radius: 24px;
    padding: 4rem 2rem;
    text-align: center;
    margin: 5rem auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    text-align: left;
    margin-top: 3rem;
}

.contact-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 16px;
    transition: var(--transition);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.whatsapp-btn,
.amazon-btn {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    color: white;
    transition: var(--transition);
}

.whatsapp-btn {
    background-color: #25D366;
}

.amazon-btn {
    background-color: #FF9900;
}

.whatsapp-btn:hover,
.amazon-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    filter: brightness(1.1);
}

/* Footer */
footer {
    background-color: #020617;
    color: #94a3b8;
    padding: 3rem 0;
    text-align: center;
    font-size: 0.9rem;
}

footer p {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

footer a {
    color: #94a3b8;
    text-decoration: underline;
}

footer a:hover {
    color: #0ea5e9;
}

footer img {
    vertical-align: middle;
    height: 16px;
    width: 16px;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .about-container {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }
}

/* Floating WhatsApp Button */
.float-wa-container {
    position: fixed;
    bottom: 40px;
    right: 40px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.float-wa-btn {
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.float-wa-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.float-wa-qr {
    background: white;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    margin-bottom: 15px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
    /* Prevent clicking when hidden */
    text-align: center;
    width: 150px;
}

.float-wa-qr img {
    width: 100%;
    display: block;
}

.float-wa-qr p {
    font-size: 0.8rem;
    color: #666;
    margin-top: 5px;
    margin-bottom: 0;
}

/* Show QR on hover of the container */
.float-wa-container:hover .float-wa-qr {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}