/* Base */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: #0f172a; /* slate-900 */
    background: #f6f7f9;
    line-height: 1.7;
}
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,0.9);
    backdrop-filter: saturate(150%) blur(8px);
    border-bottom: 1px solid #e5e7eb;
}
.navbar { padding: 14px 0; }
.nav-container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: #0f172a; font-weight: 700; }
.nav-menu { list-style: none; display: flex; gap: 18px; padding: 0; margin: 0; }
.nav-menu a { text-decoration: none; color: #334155; padding: 8px 10px; border-radius: 8px; }
.nav-menu a:hover { background: #f1f5f9; color: #0f172a; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn { background: transparent; border: 1px solid #e5e7eb; padding: 8px 10px; border-radius: 10px; cursor: pointer; color: #334155; }
.icon-btn:hover { background: #f1f5f9; }
.badge { margin-left: 6px; background: #16a34a; color: #fff; padding: 2px 6px; border-radius: 10px; font-size: 12px; }
.hamburger { display: none; flex-direction: column; gap: 3px; border: 0; background: transparent; cursor: pointer; }
.hamburger span { width: 22px; height: 2px; background: #0f172a; display: block; }

/* Hero */
.hero { background: radial-gradient(65% 90% at 20% 10%, #ffffff 0%, #f8fafc 50%, #eef2f7 100%); border-bottom: 1px solid #e5e7eb; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 32px; padding: 70px 0; align-items: center; }
.hero-copy h1 { font-size: 42px; line-height: 1.15; margin: 0 0 10px; letter-spacing: -0.5px; }
.hero-copy p { margin: 0 0 18px; color: #475569; }
.hero-cta { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-media img { border-radius: 16px; box-shadow: 0 16px 40px rgba(2, 6, 23, 0.15); }

/* Buttons */
.btn-primary, .btn-secondary { display: inline-block; padding: 10px 16px; border-radius: 10px; font-weight: 600; text-decoration: none; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: #16a34a; color: #fff; }
.btn-primary:hover { background: #15803d; }
.btn-secondary { background: #fff; color: #0f172a; border-color: #e5e7eb; }
.btn-secondary:hover { background: #f1f5f9; }

/* Features */
.features { background: #fff; padding: 50px 0; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature { text-align: center; padding: 18px; border: 1px solid #e5e7eb; border-radius: 12px; background: #fff; }
.feature i { color: #16a34a; font-size: 26px; margin-bottom: 6px; }
.feature h3 { margin: 8px 0 6px; font-size: 16px; }
.feature p { margin: 0; color: #475569; }

/* Products */
.products { padding: 60px 0; }
.section-title { text-align: left; font-size: 28px; margin: 0; }
.products-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.filters { display: flex; gap: 8px; }
.filter-btn { background: #fff; border: 1px solid #e5e7eb; padding: 8px 12px; border-radius: 10px; cursor: pointer; color: #0f172a; }
.filter-btn:hover { background: #f1f5f9; }
.filter-btn.active { background: #16a34a; border-color: #16a34a; color: #fff; }
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.product-card { border: 1px solid #e5e7eb; border-radius: 14px; overflow: hidden; background: #fff; box-shadow: 0 6px 14px rgba(2, 6, 23, 0.06); transition: transform .2s ease, box-shadow .2s ease; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 14px 28px rgba(2, 6, 23, 0.12); }
.product-image { position: relative; overflow: hidden; }
.product-image img { height: 240px; width: 100%; object-fit: cover; transition: transform .25s ease; }
.product-card:hover .product-image img { transform: scale(1.05); }
.product-overlay { position: absolute; inset: 0; display: grid; place-items: center; background: rgba(255,255,255,0.6); opacity: 0; transition: opacity .2s ease; }
.product-card:hover .product-overlay { opacity: 1; }
.btn-quick-view { background: #0f172a; color: #fff; border: 1px solid transparent; padding: 8px 12px; border-radius: 10px; font-weight: 600; cursor: pointer; }
.product-info { padding: 14px; }
.product-desc { color: #475569; margin: 6px 0 10px; font-size: 14px; }
.product-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.price { font-weight: 700; color: #0f172a; }
.btn-add-cart { background: #16a34a; color: #fff; border: 1px solid #16a34a; padding: 9px 12px; border-radius: 10px; font-weight: 600; cursor: pointer; }
.btn-add-cart:hover { background: #15803d; border-color: #15803d; }

/* Guides */
.guides { background: #fff; padding: 50px 0; border-top: 1px solid #e5e7eb; border-bottom: 1px solid #e5e7eb; }
.guides-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.guide-card { background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 16px; }
.guide-card h3 { margin: 0 0 10px; font-size: 18px; }
.guide-card ol, .guide-card ul { margin: 0 0 0 18px; color: #475569; }

/* About */
.about { background: #f8fafc; padding: 50px 0; }
.about-inner { display: grid; grid-template-columns: 1fr; gap: 16px; }

/* Newsletter */
.newsletter { background: #fff; padding: 50px 0; }
.newsletter-inner { text-align: center; max-width: 720px; }
.newsletter-form { display: inline-flex; gap: 8px; flex-wrap: wrap; }
.newsletter-form input { padding: 12px 14px; border: 1px solid #e5e7eb; border-radius: 10px; min-width: 260px; outline: none; }
.note { color: #64748b; margin-top: 6px; font-size: 14px; }

/* Footer */
.footer { background: #0b0f1a; color: #e5e7eb; }
.footer-inner { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 16px; padding: 34px 0; }
.brand { font-weight: 800; font-size: 18px; margin-bottom: 8px; }
.social { display: flex; gap: 10px; margin-top: 10px; }
.social a { display: inline-flex; width: 36px; height: 36px; align-items: center; justify-content: center; background: #111827; color: #fff; border-radius: 10px; text-decoration: none; }
.social a:hover { background: #000; }
.footer a { color: #9ca3af; text-decoration: none; }
.footer a:hover { color: #fff; }
.footer .col h4 { margin: 0 0 10px; color: #fff; }
.footer .col ul { margin: 0; padding-left: 18px; }
.copyright { border-top: 1px solid #111827; text-align: center; padding: 12px 0; font-size: 14px; color: #9ca3af; }

/* Responsive */
@media (max-width: 992px) {
    .hero-inner { grid-template-columns: 1fr; padding: 40px 0; }
    .products-grid { grid-template-columns: repeat(3, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .nav-menu { position: fixed; inset: 56px 0 auto 0; background: #ffffff; border-bottom: 1px solid #e5e7eb; transform: translateY(-120%); transition: transform .2s ease; flex-direction: column; gap: 0; padding: 10px 16px; }
    .nav-menu li a { display: block; padding: 10px 6px; }
    .nav-menu.active { transform: translateY(0); }
    .hamburger { display: inline-flex; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .guides-inner { grid-template-columns: 1fr; }
}
@media (max-width: 420px) {
    .products-grid { grid-template-columns: 1fr; }
}