/* === Minglu Lighting - High-End Solar Outdoor Lighting Style === */

/* CSS Variables */
:root {
    --green-400: #4ade80;
    --green-500: #22c55e;
    --green-600: #16a34a;
    --green-700: #15803d;
    --yellow-400: #facc15;
    --yellow-500: #eab308;
    --orange-400: #fb923c;
    --orange-500: #f97316;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,.1);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.15);
    --shadow-xl: 0 20px 60px rgba(0,0,0,.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: var(--green-600); text-decoration: none; transition: color .2s; }
a:hover { color: var(--green-500); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

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

/* === Header === */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(15, 23, 42, .85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,.08);
    transition: all .35s ease;
}
.header.scrolled {
    background: rgba(15, 23, 42, .95);
    box-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.header .container {
    display: flex; align-items: center; justify-content: space-between;
    height: 80px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-img { height: 44px; width: auto; object-fit: contain; }
.footer-logo-img { height: 36px; width: auto; object-fit: contain; }
.logo img { height: 44px; width: auto; }
.logo-text {
    font-size: 1.5rem; font-weight: 800; color: var(--white);
    letter-spacing: -.5px;
}
.logo-text span { color: var(--green-400); }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
    color: rgba(255,255,255,.8); font-weight: 500; font-size: .95rem;
    padding: 8px 16px; border-radius: var(--radius-sm);
    transition: all .2s;
}
.nav a:hover, .nav a.active { color: var(--white); background: rgba(255,255,255,.1); }
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
    position: absolute; top: 100%; left: 0;
    background: var(--gray-900); border-radius: var(--radius-md);
    padding: 8px 0; min-width: 220px;
    box-shadow: var(--shadow-xl);
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: all .25s ease;
}
.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1; visibility: visible; transform: translateY(4px);
}
.nav-dropdown-menu a {
    display: block; padding: 10px 20px; color: rgba(255,255,255,.8);
    font-size: .9rem;
}
.nav-dropdown-menu a:hover { color: var(--green-400); background: rgba(255,255,255,.05); }

.header-actions { display: flex; align-items: center; gap: 12px; }
.btn-quote {
    background: var(--green-500); color: var(--white);
    padding: 10px 24px; border-radius: 50px; font-weight: 600;
    font-size: .9rem; transition: all .25s;
}
.btn-quote:hover { background: var(--green-600); transform: translateY(-1px); box-shadow: 0 4px 15px rgba(34,197,94,.4); }

.mobile-menu-btn {
    display: none; background: none; border: none; cursor: pointer;
    width: 40px; height: 40px; flex-direction: column;
    justify-content: center; gap: 5px; padding: 8px;
}
.mobile-menu-btn span {
    display: block; width: 24px; height: 2px;
    background: var(--white); border-radius: 2px;
    transition: all .3s;
}

/* === Hero Section - High End === */
.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center;
    background: linear-gradient(135deg, #0a1628 0%, #0f172a 30%, #134e2e 70%, #0a1628 100%);
    overflow: hidden; padding-top: 80px;
}
/* Animated sun rays */
.hero::before {
    content: ''; position: absolute; top: -50%; right: -20%;
    width: 800px; height: 800px;
    background: radial-gradient(circle at 60% 40%,
        rgba(250, 204, 21, .12) 0%,
        rgba(249, 115, 22, .06) 30%,
        rgba(34, 197, 94, .03) 60%,
        transparent 70%);
    animation: sunPulse 8s ease-in-out infinite;
    pointer-events: none;
}
/* Light beam effect */
.hero::after {
    content: ''; position: absolute; top: 0; right: 10%;
    width: 2px; height: 100%;
    background: linear-gradient(to bottom,
        transparent 0%,
        rgba(250, 204, 21, .15) 20%,
        rgba(250, 204, 21, .05) 50%,
        transparent 100%);
    transform: rotate(-15deg);
    animation: beamSway 6s ease-in-out infinite;
    pointer-events: none;
}
@keyframes sunPulse {
    0%, 100% { transform: scale(1); opacity: .6; }
    50% { transform: scale(1.15); opacity: 1; }
}
@keyframes beamSway {
    0%, 100% { transform: rotate(-15deg); }
    50% { transform: rotate(-12deg); }
}

.hero-content {
    position: relative; z-index: 2; width: 100%;
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
    align-items: center; padding: 80px 0;
}
.hero-text { color: var(--white); }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(34, 197, 94, .15); border: 1px solid rgba(34, 197, 94, .3);
    padding: 8px 18px; border-radius: 50px; font-size: .85rem;
    color: var(--green-400); font-weight: 500; margin-bottom: 28px;
}
.hero-badge svg { width: 16px; height: 16px; }
.hero h1 {
    font-size: clamp(2.8rem, 5.5vw, 4.2rem); font-weight: 900;
    line-height: 1.1; letter-spacing: -1.5px; margin-bottom: 24px;
}
.hero h1 .highlight {
    background: linear-gradient(135deg, var(--green-400), var(--yellow-400));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 1.2rem; color: rgba(255,255,255,.7);
    line-height: 1.8; margin-bottom: 40px; max-width: 540px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
    display: inline-flex; align-items: center; gap: 10px;
    background: linear-gradient(135deg, var(--green-500), var(--green-600));
    color: var(--white); padding: 16px 36px; border-radius: 50px;
    font-weight: 700; font-size: 1.05rem;
    box-shadow: 0 8px 30px rgba(34, 197, 94, .35);
    transition: all .3s;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(34, 197, 94, .5);
    color: var(--white);
}
.btn-outline {
    display: inline-flex; align-items: center; gap: 10px;
    border: 2px solid rgba(255,255,255,.3); color: var(--white);
    padding: 14px 34px; border-radius: 50px;
    font-weight: 600; font-size: 1.05rem;
    transition: all .3s;
}
.btn-outline:hover {
    border-color: var(--green-400); color: var(--green-400);
    background: rgba(34, 197, 94, .1);
}

/* Hero visual - solar product showcase */
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; }
.hero-visual-inner {
    position: relative; width: 100%; max-width: 560px;
}
/* Solar street light illustration using CSS */
.solar-showcase {
    position: relative; width: 100%; aspect-ratio: 4/3;
    background: radial-gradient(ellipse at 50% 50%,
        rgba(34, 197, 94, .06) 0%,
        transparent 70%);
    border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center;
    overflow: visible;
}
/* Remove old solar icon */
.solar-icon { display: none; }
/* Product image container */
.hero-product-img {
    width: 100%; height: 100%; object-fit: contain;
    border-radius: var(--radius-lg);
    filter: drop-shadow(0 20px 60px rgba(0,0,0,.3));
    position: relative; z-index: 2;
}
/* Behind-product glow */
.hero-glow {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(250,204,21,.15) 0%, rgba(34,197,94,.08) 50%, transparent 70%);
    border-radius: 50%;
    animation: glowPulse 4s ease-in-out infinite;
    z-index: 0; pointer-events: none;
}
@keyframes glowPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: .8; }
    50% { transform: translate(-50%, -50%) scale(1.3); opacity: 1; }
}
/* Solar rays decoration */
.solar-rays {
    position: absolute; inset: 0; z-index: 1; pointer-events: none;
}
.ray {
    position: absolute; top: 50%; left: 50%;
    width: 2px; height: 60px;
    background: linear-gradient(to top, rgba(250,204,21,0), rgba(250,204,21,.4), rgba(250,204,21,0));
    transform-origin: bottom center;
    border-radius: 2px;
}
.ray.r1 { transform: translate(-50%,-100%) rotate(-60deg); animation: raySway1 3s ease-in-out infinite; }
.ray.r2 { transform: translate(-50%,-100%) rotate(-80deg); animation: raySway2 3.5s ease-in-out infinite; }
.ray.r3 { transform: translate(-50%,-100%) rotate(-100deg); animation: raySway1 4s ease-in-out infinite .5s; }
.ray.r4 { transform: translate(-50%,-100%) rotate(60deg); animation: raySway2 3.5s ease-in-out infinite .7s; }
.ray.r5 { transform: translate(-50%,-100%) rotate(80deg); animation: raySway1 4s ease-in-out infinite 1s; }
.ray.r6 { transform: translate(-50%,-100%) rotate(100deg); animation: raySway2 3s ease-in-out infinite .3s; }
@keyframes raySway1 {
    0%, 100% { opacity: .3; height: 50px; }
    50% { opacity: .7; height: 70px; }
}
@keyframes raySway2 {
    0%, 100% { opacity: .4; height: 45px; }
    50% { opacity: .6; height: 65px; }
}
/* Trust badges below hero image */
.hero-trust-badges {
    display: flex; gap: 10px; justify-content: center; margin-top: 20px;
    flex-wrap: wrap;
}
.hero-trust-badges span {
    background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12);
    color: rgba(255,255,255,.6); padding: 6px 16px;
    border-radius: 50px; font-size: .8rem; font-weight: 500;
    backdrop-filter: blur(10px);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* === Stats Bar === */
.stats-bar {
    background: var(--gray-900); border-top: 1px solid rgba(255,255,255,.05);
    border-bottom: 1px solid rgba(255,255,255,.05); padding: 40px 0;
}
.stats-bar .container {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px;
}
.stat-item { text-align: center; color: var(--white); }
.stat-number {
    font-size: 2.8rem; font-weight: 900; color: var(--green-400);
    line-height: 1; margin-bottom: 8px;
    font-variant-numeric: tabular-nums;
}
.stat-label { font-size: .95rem; color: rgba(255,255,255,.6); font-weight: 500; }

/* === Section Headers === */
.section { padding: 100px 0; }
.section-dark { background: var(--gray-50); }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
    display: inline-block; background: rgba(34, 197, 94, .1);
    color: var(--green-600); padding: 6px 18px; border-radius: 50px;
    font-size: .85rem; font-weight: 600; margin-bottom: 16px;
    text-transform: uppercase; letter-spacing: 1px;
}
.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800;
    color: var(--gray-900); line-height: 1.2; letter-spacing: -.5px;
    margin-bottom: 16px;
}
.section-desc {
    font-size: 1.1rem; color: var(--gray-500); max-width: 600px;
    margin: 0 auto; line-height: 1.8;
}

/* === Category Cards === */
.categories-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}
.category-card {
    background: var(--white); border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow-md);
    transition: all .4s cubic-bezier(.25, .8, .25, 1);
    border: 1px solid var(--gray-200);
}
.category-card:hover {
    transform: translateY(-8px); box-shadow: var(--shadow-xl);
    border-color: var(--green-400);
}
.category-img {
    height: 200px; background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.category-img img { width: 100%; height: 100%; object-fit: cover; }
.category-icon {
    width: 80px; height: 80px; border-radius: 20px;
    background: linear-gradient(135deg, var(--green-500), var(--green-600));
    display: flex; align-items: center; justify-content: center;
    font-size: 2.2rem; color: var(--white);
    box-shadow: 0 8px 25px rgba(34, 197, 94, .3);
}
.category-body { padding: 24px; }
.category-body h3 {
    font-size: 1.2rem; font-weight: 700; color: var(--gray-900);
    margin-bottom: 8px;
}
.category-body p { font-size: .9rem; color: var(--gray-500); margin-bottom: 16px; }
.category-link {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--green-600); font-weight: 600; font-size: .9rem;
}
.category-link:hover { gap: 10px; }

/* === Product Cards === */
.products-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}
.product-card {
    background: var(--white); border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow-md);
    transition: all .4s cubic-bezier(.25, .8, .25, 1);
    border: 1px solid var(--gray-200);
    position: relative;
}
.product-card:hover {
    transform: translateY(-8px); box-shadow: var(--shadow-xl);
}
.product-card-img {
    height: 240px; overflow: hidden; position: relative;
    background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
}
.product-card-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform .5s ease;
}
.product-card:hover .product-card-img img { transform: scale(1.08); }
.product-card-badge {
    position: absolute; top: 16px; left: 16px;
    background: var(--green-500); color: var(--white);
    padding: 4px 14px; border-radius: 50px; font-size: .8rem; font-weight: 600;
}
.product-card-body { padding: 24px; }
.product-card-body h3 {
    font-size: 1.1rem; font-weight: 700; color: var(--gray-900);
    margin-bottom: 8px; line-height: 1.4;
}
.product-card-body p { font-size: .88rem; color: var(--gray-500); margin-bottom: 16px; }
.product-specs {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px;
    margin-bottom: 20px; padding: 12px; background: var(--gray-50);
    border-radius: var(--radius-sm);
}
.product-spec { font-size: .82rem; color: var(--gray-600); }
.product-spec strong { color: var(--gray-800); font-weight: 600; }
.product-card-actions { display: flex; gap: 10px; }
.btn-detail {
    flex: 1; text-align: center; padding: 10px; border-radius: var(--radius-sm);
    background: var(--gray-100); color: var(--gray-800); font-weight: 600;
    font-size: .9rem; transition: all .2s;
}
.btn-detail:hover { background: var(--gray-200); }
.btn-whatsapp {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    background: #25d366; color: var(--white); padding: 10px 18px;
    border-radius: var(--radius-sm); font-weight: 600; font-size: .9rem;
    transition: all .2s; white-space: nowrap;
}
.btn-whatsapp:hover { background: #1ea952; color: var(--white); }

/* === Why Choose Us === */
.why-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 30px;
}
.why-card {
    background: var(--white); padding: 36px 28px; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md); transition: all .35s;
    border: 1px solid var(--gray-200); text-align: center;
}
.why-card:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-lg);
    border-color: var(--green-400);
}
.why-icon {
    width: 72px; height: 72px; margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(34,197,94,.1), rgba(34,197,94,.05));
    border-radius: 20px; display: flex; align-items: center;
    justify-content: center; font-size: 2rem;
    transition: all .35s;
}
.why-card:hover .why-icon {
    background: linear-gradient(135deg, var(--green-500), var(--green-600));
    transform: scale(1.05);
}
.why-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--gray-900); margin-bottom: 10px; }
.why-card p { font-size: .9rem; color: var(--gray-500); line-height: 1.7; }

/* === CTA Section === */
.cta-section {
    background: linear-gradient(135deg, var(--gray-900) 0%, #134e2e 100%);
    padding: 100px 0; text-align: center; position: relative; overflow: hidden;
}
.cta-section::before {
    content: ''; position: absolute; top: -100px; right: -100px;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(34,197,94,.1) 0%, transparent 70%);
    pointer-events: none;
}
.cta-section h2 {
    font-size: clamp(2rem, 4vw, 3rem); font-weight: 800;
    color: var(--white); margin-bottom: 16px;
}
.cta-section p { font-size: 1.15rem; color: rgba(255,255,255,.7); margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* === Footer === */
.footer {
    background: #060d1a; color: rgba(255,255,255,.6); padding: 80px 0 30px;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 50px;
    margin-bottom: 50px;
}
.footer-brand .logo-text { font-size: 1.4rem; margin-bottom: 16px; }
.footer-brand p { font-size: .9rem; line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
    width: 40px; height: 40px; border-radius: 10px;
    background: rgba(255,255,255,.08); display: flex;
    align-items: center; justify-content: center;
    transition: all .25s; font-size: 1.1rem;
}
.footer-social a:hover { background: var(--green-500); transform: translateY(-3px); }
.footer-col h4 {
    color: var(--white); font-size: 1rem; font-weight: 700;
    margin-bottom: 20px; position: relative; padding-bottom: 12px;
}
.footer-col h4::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 30px; height: 3px; background: var(--green-500); border-radius: 2px;
}
.footer-col a {
    display: block; color: rgba(255,255,255,.5); padding: 6px 0;
    font-size: .9rem; transition: all .2s;
}
.footer-col a:hover { color: var(--green-400); padding-left: 6px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08); padding-top: 30px;
    display: flex; justify-content: space-between; align-items: center;
    font-size: .85rem;
}
.footer-certifications { display: flex; gap: 16px; align-items: center; }
.footer-certifications span {
    background: rgba(255,255,255,.08); padding: 4px 12px;
    border-radius: 6px; font-size: .8rem; color: rgba(255,255,255,.5);
}

/* === WhatsApp Float Button === */
.whatsapp-float {
    position: fixed; bottom: 30px; right: 30px; z-index: 999;
    display: flex; align-items: center; gap: 10px;
    background: #25d366; color: var(--white);
    padding: 14px 24px; border-radius: 50px;
    box-shadow: 0 8px 30px rgba(37, 211, 102, .4);
    transition: all .3s; font-weight: 600;
}
.whatsapp-float:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 40px rgba(37, 211, 102, .6);
    color: var(--white);
}
.whatsapp-float svg { width: 24px; height: 24px; }

/* === Page Hero (sub pages) === */
.page-hero {
    background: linear-gradient(135deg, var(--gray-900) 0%, #134e2e 100%);
    padding: 160px 0 80px; text-align: center; color: var(--white);
    position: relative; overflow: hidden;
}
.page-hero::before {
    content: ''; position: absolute; top: -50%; right: -10%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(34,197,94,.08) 0%, transparent 70%);
    pointer-events: none;
}
.page-hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 800;
    margin-bottom: 16px; position: relative;
}
.page-hero p {
    font-size: 1.15rem; color: rgba(255,255,255,.7);
    max-width: 600px; margin: 0 auto; position: relative;
}

/* === Filter Bar === */
.filter-bar {
    display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
    margin-bottom: 50px;
}
.filter-btn {
    padding: 10px 24px; border-radius: 50px; border: 1.5px solid var(--gray-300);
    background: var(--white); color: var(--gray-700); font-weight: 500;
    font-size: .9rem; cursor: pointer; transition: all .25s;
}
.filter-btn:hover, .filter-btn.active {
    background: var(--green-500); color: var(--white);
    border-color: var(--green-500);
}

/* === Product Detail === */
.product-detail { padding: 80px 0; }
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.product-gallery { position: sticky; top: 100px; }
.gallery-main {
    position: relative;
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--gray-50);
    aspect-ratio: 4/3;
    display: flex; align-items: center; justify-content: center;
}
.gallery-main img {
    width: 100%; height: 100%; object-fit: contain;
    display: block; transition: opacity .3s;
}
/* Gallery arrows */
.gallery-arrow {
    position: absolute;
    top: 50%; transform: translateY(-50%);
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--gray-200);
    color: var(--gray-800);
    font-size: 24px; line-height: 1;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s; z-index: 10;
}
.gallery-arrow:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
    color: var(--green-500);
}
.gallery-arrow-left { left: 12px; }
.gallery-arrow-right { right: 12px; }

/* Thumbnail strip with scroll arrows */
.gallery-thumbs-wrapper {
    display: flex; align-items: center;
    gap: 8px; margin-top: 16px;
    position: relative;
}
.gallery-thumbs {
    display: flex; gap: 10px;
    overflow-x: auto; scroll-behavior: smooth;
    flex: 1; padding-bottom: 8px;
    scrollbar-width: thin; scrollbar-color: var(--gray-300) transparent;
}
.gallery-thumbs::-webkit-scrollbar { height: 4px; }
.gallery-thumbs::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 4px; }
.gallery-thumb {
    width: 72px; height: 72px; border-radius: var(--radius-sm);
    overflow: hidden; cursor: pointer; flex-shrink: 0;
    border: 2px solid transparent; transition: all .2s;
    background: var(--gray-100);
}
.gallery-thumb:hover { border-color: var(--green-400); transform: translateY(-2px); }
.gallery-thumb.active { border-color: var(--green-500); box-shadow: 0 0 0 3px rgba(34,197,94,.2); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* Thumbnail scroll arrows */
.thumbs-arrow {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--white);
    border: 1px solid var(--gray-200);
    color: var(--gray-800);
    font-size: 18px; line-height: 1;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s; flex-shrink: 0; z-index: 5;
}
.thumbs-arrow:hover {
    background: var(--green-500);
    color: var(--white);
    border-color: var(--green-500);
}
.thumbs-arrow-left { order: 0; }
.thumbs-arrow-right { order: 2; }
.gallery-thumbs { order: 1; }

/* === Detail Images Section === */
.detail-images-section { border-top: 1px solid var(--gray-200); padding-top: 48px; }
.detail-images-grid { display: flex; flex-direction: column; gap: 16px; max-width: 900px; margin: 0 auto; }
.detail-images-grid img {
    width: 100%; height: auto; border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: block;
}
.product-detail-info h1 {
    font-size: 2rem; font-weight: 800; color: var(--gray-900);
    margin-bottom: 12px;
}
.product-detail-category {
    display: inline-block; background: rgba(34,197,94,.1); color: var(--green-600);
    padding: 4px 14px; border-radius: 50px; font-size: .85rem; font-weight: 600;
    margin-bottom: 20px;
}
.product-detail-desc { color: var(--gray-600); line-height: 1.8; margin-bottom: 24px; }
.detail-section-title {
    font-size: 1rem; font-weight: 700; color: var(--gray-900);
    margin-bottom: 16px; padding-bottom: 8px;
    border-bottom: 2px solid var(--green-500);
    display: inline-block;
}
.product-detail-features { margin-bottom: 30px; }
.product-detail-features li {
    padding: 8px 0; color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
    padding-left: 28px; position: relative;
}
.product-detail-features li::before {
    content: ''; position: absolute; left: 0; top: 12px;
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--green-500) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;
}
.product-detail-specs {
    background: var(--gray-50); border-radius: var(--radius-md);
    padding: 24px; margin-bottom: 30px;
}
.spec-row {
    display: flex; justify-content: space-between; padding: 10px 0;
    border-bottom: 1px solid var(--gray-200);
}
.spec-row:last-child { border-bottom: none; }
.spec-label { color: var(--gray-500); font-size: .9rem; }
.spec-value { color: var(--gray-800); font-weight: 600; font-size: .9rem; }
.btn-whatsapp-lg {
    display: inline-flex; align-items: center; gap: 10px;
    background: #25d366; color: var(--white);
    padding: 16px 36px; border-radius: 50px; font-weight: 700;
    font-size: 1.05rem; box-shadow: 0 8px 30px rgba(37,211,102,.3);
    transition: all .3s;
}
.btn-whatsapp-lg:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(37,211,102,.5);
    color: var(--white);
}

/* === Contact Page === */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 50px; }
.contact-info-card {
    background: var(--gray-900); color: var(--white); padding: 40px;
    border-radius: var(--radius-lg);
}
.contact-info-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 24px; }
.contact-info-item {
    display: flex; gap: 16px; margin-bottom: 20px;
    padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,.1);
}
.contact-info-item:last-child { border-bottom: none; }
.contact-icon {
    width: 48px; height: 48px; border-radius: 12px;
    background: rgba(34,197,94,.15); display: flex;
    align-items: center; justify-content: center; font-size: 1.3rem;
    flex-shrink: 0;
}
.contact-info-item h4 { font-size: .95rem; font-weight: 600; margin-bottom: 4px; }
.contact-info-item p { font-size: .88rem; color: rgba(255,255,255,.6); }
.contact-form-wrap {
    background: var(--white); padding: 40px; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}
.contact-form-wrap h3 { font-size: 1.4rem; font-weight: 700; color: var(--gray-900); margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; font-size: .9rem; font-weight: 600;
    color: var(--gray-700); margin-bottom: 8px;
}
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 12px 16px; border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm); font-size: .95rem; color: var(--gray-800);
    transition: border-color .2s; font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none; border-color: var(--green-500);
    box-shadow: 0 0 0 3px rgba(34,197,94,.1);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.btn-submit {
    background: linear-gradient(135deg, var(--green-500), var(--green-600));
    color: var(--white); padding: 14px 36px; border: none;
    border-radius: 50px; font-weight: 700; font-size: 1rem;
    cursor: pointer; transition: all .3s; width: 100%;
}
.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(34,197,94,.35);
}

/* === About Page === */
.about-story { padding: 100px 0; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-img {
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.about-img img { width: 100%; height: auto; display: block; }
.about-text h2 {
    font-size: 2rem; font-weight: 800; color: var(--gray-900);
    margin-bottom: 20px;
}
.about-text p { color: var(--gray-600); line-height: 1.9; margin-bottom: 16px; }
.about-stats {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
    margin-top: 30px; padding-top: 30px; border-top: 1px solid var(--gray-200);
}
.about-stat { text-align: center; }
.about-stat-number { font-size: 2rem; font-weight: 900; color: var(--green-500); }
.about-stat-label { font-size: .85rem; color: var(--gray-500); }

/* === Responsive === */
@media (max-width: 900px) {
    .nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-text { order: 1; }
    .hero-visual { order: 0; }
    .hero p { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .stats-bar .container { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .product-detail-grid { grid-template-columns: 1fr; }
    .product-gallery { position: static; }
    .gallery-main { aspect-ratio: 4/3; }
    .contact-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .hero h1 { font-size: 2rem; }
    .stats-bar .container { grid-template-columns: 1fr 1fr; }
    .section { padding: 60px 0; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .whatsapp-float { bottom: 20px; right: 20px; padding: 12px 18px; }
    .whatsapp-float span { display: none; }
}

/* === Power Options & App Tags === */
.power-btn {
    padding: 8px 20px; border-radius: 50px; border: 1.5px solid var(--gray-300);
    background: var(--white); color: var(--gray-700); font-weight: 600;
    font-size: .9rem; cursor: pointer; transition: all .25s;
}
.power-btn:hover, .power-btn.active {
    background: var(--green-500); color: var(--white); border-color: var(--green-500);
}
.app-tag {
    display: inline-block; padding: 6px 14px; border-radius: 50px;
    background: var(--gray-100); color: var(--gray-600); font-size: .85rem;
    font-weight: 500;
}

/* === Animations === */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp .6s ease-out; }