/* ============================================
   MaterialAlamPurwakarta.com - Main Stylesheet
   ============================================ */

/* CSS Variables */
:root {
    --primary-color: #1a5f2a;
    --primary-dark: #124a20;
    --primary-light: #2d7a3e;
    --secondary-color: #f5a623;
    --accent-color: #e8b341;
    --text-dark: #1a1a1a;
    --text-medium: #4a4a4a;
    --text-light: #6a6a6a;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --radius: 8px;
    --radius-lg: 16px;
    --whatsapp: #25d366;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}
#randomGallery {
    justify-content: center;
    
}

/* Media container biar konsisten */
.gallery-link {
    display: block;
    color: inherit;
}
.gallery-media img {
    object-fit: cover;
    object-position: center;
}
.gallery-media {
    position: relative;
    width: 100%;
    height: 210px;
    overflow: hidden;
}
/* Play button tengah */
.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 30px;
    color: white;
    background: rgba(0,0,0,0.6);
    padding: 10px 14px;
    border-radius: 50%;
}

/* Overlay */
.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
}
/* Modal video */
.video-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
}

.video-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
}

.video-content {
    position: relative;
    width: 90%;
    max-width: 800px;
    margin: 5% auto;
}

.video-content iframe {
    width: 100%;
    height: 450px;
}

.video-close {
    position: absolute;
    top: -30px;
    right: 0;
    font-size: 30px;
    color: white;
    cursor: pointer;
}

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

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

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

.btn-whatsapp:hover {
    background-color: #128c7e;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-whatsapp-header {
    background-color: var(--whatsapp);
    color: white;
    padding: 10px 16px;
    font-size: 0.9rem;
}

.btn-whatsapp-header:hover {
    background-color: #128c7e;
}

.btn-whatsapp-large {
    background-color: var(--whatsapp);
    color: white;
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-whatsapp-large:hover {
    background-color: #128c7e;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.whatsapp-icon {
    width: 20px;
    height: 20px;
}

/* ============================================
   Header
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header.sticky {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.logo-text {
    white-space: nowrap;
}

.nav-list {
    display: flex;
    gap: 24px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-medium);
    position: relative;
}

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

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

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    border-radius: 3px;
    transition: var(--transition);
}

.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(6px, -6px);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 70px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 95, 42, 0.9) 0%, rgba(0, 0, 0, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: 40px 20px;
    max-width: 900px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.stat-label {
    font-size: 0.95rem;
    opacity: 0.9;
}

/* ============================================
   Sections General
   ============================================ */

.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    color: var(--text-dark);
    margin-bottom: 12px;
}

.section-subtitle {
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section-cta {
    text-align: center;
    margin-top: 40px;
}

/* ============================================
   Products Section
   ============================================ */

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.product-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.product-content {
    padding: 24px;
}

.product-title {
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.product-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.product-btn {
    width: 100%;
}

/* ============================================
   Gallery Section
   ============================================ */

.gallery-grid {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
}

.gallery-title {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

/* Masonry Gallery */
.gallery-masonry {
    column-count: 3;
    column-gap: 16px;
}

.gallery-masonry .gallery-item {
    break-inside: avoid;
    margin-bottom: 16px;
}

.gallery-masonry .gallery-item img {
    height: auto;
}

/* ============================================
   Lightbox
   ============================================ */

.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
}

.lightbox-content {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox-image {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    cursor: pointer;
    padding: 12px;
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.4);
}

.lightbox-close {
    top: -50px;
    right: 0;
}

.lightbox-prev {
    left: -60px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: -60px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-close svg,
.lightbox-prev svg,
.lightbox-next svg {
    width: 24px;
    height: 24px;
}

.lightbox-caption {
    position: absolute;
    bottom: -40px;
    left: 0;
    right: 0;
    text-align: center;
    color: white;
    font-size: 1rem;
}

/* ============================================
   Features Section
   ============================================ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px 24px;
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 24px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-title {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

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

/* ============================================
   Partners Section
   ============================================ */

.partners-slider {
    display: flex;
    gap: 40px;
    overflow-x: auto;
    padding: 20px 0;
    scrollbar-width: none;
}

.partners-slider::-webkit-scrollbar {
    display: none;
}

.partner-logo {
    flex-shrink: 0;
    width: 150px;
    height: 80px;
    background-color: var(--bg-white);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    box-shadow: var(--shadow);
}

.partner-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.partner-logo:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* Partners Grid (for mitra.html) */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 30px;
}

/* ============================================
   CTA Banner Section
   ============================================ */

.section-cta-banner {
    background-color: var(--primary-color);
    padding: 80px 0;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    color: white;
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.cta-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* ============================================
   SEO Content Section
   ============================================ */

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

.seo-content {
    max-width: 900px;
    margin: 0 auto;
}

.seo-content h2 {
    color: var(--primary-color);
    margin-bottom: 24px;
}

.seo-content p {
    color: var(--text-medium);
    text-align: justify;
    margin-bottom: 16px;
}

/* ============================================
   Page Header
   ============================================ */

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 140px 0 60px;
    text-align: center;
    color: white;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    opacity: 0.9;
}

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

/* ============================================
   About Section (Profil)
   ============================================ */

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.about-content h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

/* Vision Mission */
.vm-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.vm-card {
    background-color: var(--bg-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.vm-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 24px;
}

.vm-icon svg {
    width: 28px;
    height: 28px;
}

.vm-card h3 {
    color: var(--primary-color);
    margin-bottom: 16px;
}

.vm-card p,
.vm-card ul {
    color: var(--text-medium);
}

.vm-card ul {
    padding-left: 20px;
}

.vm-card li {
    list-style: disc;
    margin-bottom: 8px;
}

/* Stats Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.stat-box {
    text-align: center;
    padding: 40px 20px;
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.stat-box-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-box-label {
    color: var(--text-light);
    font-size: 1rem;
}

/* ============================================
   Categories Section (Produk)
   ============================================ */

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.category-card {
    background-color: var(--bg-white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.category-icon {
    width: 70px;
    height: 70px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin: 0 auto 20px;
}

.category-icon svg {
    width: 32px;
    height: 32px;
}

.category-card h3 {
    margin-bottom: 12px;
    color: var(--text-dark);
}

.category-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* ============================================
   Partnership CTA (Mitra)
   ============================================ */

.partnership-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.partnership-text h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.partnership-text p {
    color: var(--text-medium);
    margin-bottom: 24px;
}

.partnership-benefits {
    padding-left: 20px;
}

.partnership-benefits li {
    list-style: disc;
    margin-bottom: 10px;
    color: var(--text-medium);
}

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

/* ============================================
   Contact Section
   ============================================ */

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

.contact-info h2 {
    color: var(--primary-color);
    margin-bottom: 16px;
}

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

.contact-items {
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
}

.contact-details h4 {
    margin-bottom: 4px;
    font-size: 1rem;
}

.contact-details p {
    color: var(--text-light);
    margin-bottom: 0;
}

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

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

.contact-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    min-height: 400px;
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    min-height: 400px;
}

/* Quick Contact / Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.step-card {
    text-align: center;
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    margin: 0 auto 20px;
}

.step-icon {
    width: 80px;
    height: 80px;
    background-color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: var(--shadow);
    color: var(--primary-color);
}

.step-icon svg {
    width: 36px;
    height: 36px;
}

.step-card h3 {
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-light);
    margin-bottom: 0;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--text-dark);
    color: white;
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--secondary-color);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: white;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

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

.footer-bottom {
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* ============================================
   Floating WhatsApp Button
   ============================================ */

.floating-whatsapp {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--whatsapp);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.floating-whatsapp:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

.floating-whatsapp svg {
    width: 32px;
    height: 32px;
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6);
    }
    100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    }
}

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

@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .vm-grid {
        grid-template-columns: 1fr;
    }
    
    .partnership-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .partnership-benefits {
        display: inline-block;
        text-align: left;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .gallery-masonry {
        column-count: 3;
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        padding: 20px;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
    }
    
    .nav.active {
        transform: translateY(0);
    }
    
    .nav-list {
        flex-direction: column;
        gap: 16px;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .btn-whatsapp-header {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-box-number {
        font-size: 2rem;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .gallery-masonry {
        column-count: 2;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .products-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-masonry {
        column-count: 1;
    }
    
    .floating-whatsapp {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
    
    .floating-whatsapp svg {
        width: 26px;
        height: 26px;
    }
}

/* ============================================
   Utility Classes
   ============================================ */

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* Lazy loading */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
    opacity: 1;
}