/* ========================================
   For Easy Home - Complete Stylesheet
   Modern, responsive,外贸-friendly design
   ======================================== */

/* --- CSS Variables --- */
:root {
    --primary: #2D6A4F;
    --primary-dark: #1B4332;
    --primary-light: #52B788;
    --accent: #D4A373;
    --accent-light: #E9C46A;
    --dark: #1a1a2e;
    --text: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --bg: #FFFFFF;
    --bg-light: #f8f9fa;
    --bg-warm: #faf9f6;
    --bg-cream: #fefaf3;
    --border: #e8e8e8;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
    --max-width: 1200px;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

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

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-align: center;
    line-height: 1.4;
}

.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

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

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

.btn-white {
    background: white;
    color: var(--primary);
    border-color: white;
}
.btn-white:hover {
    background: var(--bg-light);
}

.btn-outline-dark {
    background: transparent;
    color: var(--dark);
    border-color: var(--dark);
}
.btn-outline-dark:hover {
    background: var(--dark);
    color: white;
}

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

.btn-whatsapp {
    background: #25D366;
    color: white;
    border-color: #25D366;
}
.btn-whatsapp:hover {
    background: #1fb855;
    border-color: #1fb855;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* --- Header / Navigation --- */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
}

.logo-icon { font-size: 1.6rem; }

.highlight { color: var(--primary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text);
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

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

.nav-links a.active,
.nav-links a:hover {
    color: var(--primary);
}

.nav-actions { display: flex; gap: 12px; }

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-cream) 0%, #e8f5e9 50%, #f1f8e9 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 80% 20%, rgba(82, 183, 136, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(212, 163, 115, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    padding: 60px 0;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    color: var(--dark);
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 560px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

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

/* --- Section Header --- */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    line-height: 1.3;
}

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

.section-header .btn {
    margin-top: 24px;
}

/* --- Features --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.feature-card {
    background: white;
    border-radius: var(--radius-md);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark);
}

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

/* --- Products Preview --- */
.products-preview { background: var(--bg-light); }

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.product-card {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.product-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
}

/* Placeholder gradients for product images - replace with real photos */
.product-img-1 {
    background: linear-gradient(135deg, #a8e6cf, #88d8b0, #6bc5a0);
}
.product-img-2 {
    background: linear-gradient(135deg, #ffd3b6, #ffaaa5, #ff8c73);
}
.product-img-3 {
    background: linear-gradient(135deg, #b8e6cf, #7ec8a0, #5cb890);
}
.product-img-4 {
    background: linear-gradient(135deg, #ddd6b3, #d4c5a0, #c9ba8b);
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-badge.new {
    background: var(--accent);
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--dark);
}

.product-info p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.product-link {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}

.product-link:hover { color: var(--primary-dark); }

/* --- Categories Banner --- */
.categories-banner {
    background: var(--primary);
    padding: 48px 0;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.category-item {
    text-align: center;
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
}

.category-item.light {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.3);
}

.category-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: white;
}

.category-name {
    display: block;
    font-size: 0.95rem;
    color: rgba(255,255,255,0.8);
    margin-top: 4px;
}

/* --- About Preview --- */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.about-image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--bg-warm), #e8f5e9);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    box-shadow: var(--shadow-lg);
}

.about-img-tall {
    aspect-ratio: 3/4;
}

.about-content {
    max-width: 520px;
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 16px;
}

.about-content .btn {
    margin-top: 16px;
}

/* --- Values Section --- */
.values-section {
    background: var(--bg-warm);
}

/* --- Numbers Section --- */
.numbers-section {
    background: linear-gradient(135deg, var(--dark) 0%, #16213e 100%);
    padding: 60px 0;
}

/* --- Certifications --- */
.cert-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.cert-badge {
    padding: 16px 32px;
    border: 2px solid var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
    background: white;
}

/* --- CTA Section --- */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
    padding: 80px 0;
}

.cta-content h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Page Banner --- */
.page-banner {
    background: linear-gradient(135deg, var(--bg-cream) 0%, #e8f5e9 100%);
    padding: 60px 0;
    text-align: center;
}

.page-banner h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
}

.page-banner > .container > p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 20px;
}

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

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

.breadcrumb a:hover {
    text-decoration: underline;
}

/* --- Filter Buttons --- */
.products-filter {
    background: var(--bg-light);
}

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

.filter-btn {
    padding: 10px 24px;
    border: 2px solid var(--border);
    background: white;
    border-radius: 30px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    color: var(--text);
}

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

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

/* --- Product Catalog --- */
.product-grid-large {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
}

.product-card-large {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.product-image-lg {
    height: 220px;
    background-size: cover;
    background-position: center;
}

.product-info-lg {
    padding: 24px;
}

.product-category {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.product-info-lg h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.product-info-lg > p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.product-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.tag {
    font-size: 0.78rem;
    padding: 3px 10px;
    background: var(--bg-light);
    color: var(--text-light);
    border-radius: 20px;
    font-weight: 500;
}

/* --- Contact Section --- */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info-side h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.contact-info-side > p {
    color: var(--text-light);
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    margin-bottom: 2px;
    color: var(--dark);
}

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

.contact-item a {
    color: var(--primary);
}

.contact-item a:hover {
    text-decoration: underline;
}

.whatsapp-cta {
    background: var(--bg-warm);
    padding: 20px;
    border-radius: var(--radius-md);
    text-align: center;
}

.whatsapp-cta p {
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--dark);
}

/* --- Contact Form --- */
.contact-form {
    background: white;
    padding: 36px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
}

.contact-form h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-light);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

.form-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 12px;
}

/* --- Map Section --- */
.map-section {
    padding: 0 0 80px;
    background: var(--bg-light);
}

.map-placeholder {
    background: var(--bg-warm);
    border-radius: var(--radius-md);
    padding: 60px 20px;
    text-align: center;
    color: var(--text-muted);
    border: 2px dashed var(--border);
    margin-top: 20px;
}

/* --- Footer --- */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.footer-col p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
}

.footer-col ul li a:hover {
    color: var(--primary-light);
}

.contact-list li {
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.social-links {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

.social-links a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: rgba(255,255,255,0.6);
}

.social-links a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet */
@media (max-width: 992px) {
    .about-layout,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .about-content {
        max-width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .product-grid-large {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

/* Mobile */
@media (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        gap: 16px;
        z-index: 999;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-actions {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero {
        min-height: 80vh;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        text-align: center;
    }

    .hero-stats {
        gap: 24px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .product-grid {
        grid-template-columns: 1fr 1fr;
    }

    .product-grid-large {
        grid-template-columns: 1fr;
    }

    .categories-grid {
        grid-template-columns: 1fr 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .contact-form {
        padding: 24px;
    }

    .cta-section {
        padding: 60px 0;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
    }

    .categories-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .category-number {
        font-size: 1.6rem;
    }

    .filter-buttons {
        gap: 8px;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
}

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

.feature-card,
.product-card,
.product-card-large {
    animation: fadeInUp 0.5s ease forwards;
}

/* --- Print styles --- */
@media print {
    .header, .footer, .cta-section, .whatsapp-cta {
        display: none;
    }
}