/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0e1a;
  --bg2: #111827;
  --bg3: #1a2235;
  --accent: #00c8ff;
  --accent2: #7c3aed;
  --accent-glow: rgba(0, 200, 255, 0.15);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: rgba(255,255,255,0.08);
  --card-bg: rgba(255,255,255,0.04);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent2); border-radius: 99px; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 0.5rem;
}
.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
}
.accent { color: var(--accent); }
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== LAYOUT ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
section { padding: 5rem 0; }

/* ===== NAV ===== */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,14,26,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: 68px;
  display: flex; align-items: center;
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%;
}
.nav-logo {
  font-size: 1.3rem; font-weight: 800; letter-spacing: -0.5px;
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-logo .dot { color: var(--accent); }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  color: var(--text-muted); font-size: 0.92rem; font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--accent); }
.nav-cta {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff !important; padding: 0.5rem 1.2rem; border-radius: 8px;
  font-weight: 600 !important; font-size: 0.88rem !important;
  transition: opacity var(--transition) !important;
}
.nav-cta:hover { opacity: 0.85; }
.nav-menu-btn {
  display: none; background: none; color: var(--text);
  font-size: 1.4rem; padding: 0.3rem;
}

/* ===== HERO ===== */
#hero {
  min-height: 100vh;
  display: flex; align-items: center;
  background: var(--bg);
  position: relative; overflow: hidden;
  padding-top: 68px;
}
.hero-grid {
  position: absolute; inset: 0; opacity: 0.07;
  background-image:
    linear-gradient(var(--accent) 1px, transparent 1px),
    linear-gradient(90deg, var(--accent) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute; width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,200,255,0.12) 0%, transparent 70%);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 680px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--accent-glow); border: 1px solid rgba(0,200,255,0.3);
  color: var(--accent); padding: 0.4rem 1rem; border-radius: 99px;
  font-size: 0.82rem; font-weight: 600; letter-spacing: 0.5px;
  text-transform: uppercase; margin-bottom: 1.5rem;
}
.hero-badge span { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.4;transform:scale(0.8)} }
.hero-title { font-size: clamp(2.2rem, 6vw, 3.8rem); margin-bottom: 1.2rem; }
.hero-desc { color: var(--text-muted); font-size: 1.1rem; max-width: 520px; margin-bottom: 2.5rem; }
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; padding: 0.85rem 2rem; border-radius: 10px;
  font-weight: 700; font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition);
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,200,255,0.3); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--border); padding: 0.85rem 2rem; border-radius: 10px;
  font-weight: 600; font-size: 0.95rem;
  transition: border-color var(--transition), color var(--transition);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.hero-stats {
  display: flex; gap: 2.5rem; margin-top: 3rem;
  padding-top: 2.5rem; border-top: 1px solid var(--border);
}
.hero-stat-num { font-size: 1.8rem; font-weight: 800; color: var(--accent); }
.hero-stat-label { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.2rem; }

/* ===== CATEGORIES ===== */
#categories { background: var(--bg2); }
.cats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
}
.cat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
  text-align: center;
}
.cat-card:hover, .cat-card.active {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-4px);
}
.cat-icon { font-size: 2.2rem; margin-bottom: 0.8rem; }
.cat-name { font-weight: 700; font-size: 1rem; margin-bottom: 0.3rem; }
.cat-count { font-size: 0.82rem; color: var(--text-muted); }

/* ===== PRODUCTS ===== */
#products { background: var(--bg); }
.products-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem;
}
.filter-tabs {
  display: flex; gap: 0.6rem; flex-wrap: wrap;
}
.filter-tab {
  background: var(--card-bg); border: 1px solid var(--border);
  color: var(--text-muted); padding: 0.45rem 1.1rem; border-radius: 99px;
  font-size: 0.85rem; font-weight: 500;
  transition: all var(--transition);
}
.filter-tab:hover { border-color: var(--accent); color: var(--accent); }
.filter-tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: transparent; color: #fff;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.4rem;
}
.product-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  display: flex; flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,200,255,0.4);
  box-shadow: 0 12px 40px rgba(0,200,255,0.12);
}
.product-img-wrap {
  position: relative; aspect-ratio: 1/1; overflow: hidden;
  background: var(--bg3);
}
.product-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.product-card:hover .product-img-wrap img { transform: scale(1.06); }
.product-badge {
  position: absolute; top: 0.7rem; left: 0.7rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; font-size: 0.7rem; font-weight: 700;
  padding: 0.25rem 0.6rem; border-radius: 6px; text-transform: uppercase;
}
.product-body { padding: 1.2rem; flex: 1; display: flex; flex-direction: column; }
.product-name {
  font-size: 0.9rem; font-weight: 600; line-height: 1.4;
  margin-bottom: 0.7rem;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.product-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.9rem; }
.tag {
  background: rgba(255,255,255,0.06); border: 1px solid var(--border);
  color: var(--text-muted); font-size: 0.72rem; padding: 0.2rem 0.55rem; border-radius: 5px;
}
.product-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.product-price { font-size: 0.9rem; font-weight: 700; color: var(--accent); }
.product-unit { font-size: 0.72rem; color: var(--text-muted); }
.product-link-btn {
  background: var(--card-bg); border: 1px solid var(--border);
  color: var(--text-muted); padding: 0.4rem 0.9rem; border-radius: 7px;
  font-size: 0.8rem; font-weight: 600;
  transition: all var(--transition);
}
.product-link-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ===== FEATURES ===== */
#features { background: var(--bg2); }
.features-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem;
  transition: border-color var(--transition);
}
.feature-card:hover { border-color: var(--accent); }
.feature-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; margin-bottom: 1.2rem;
}
.feature-card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.feature-card p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.6; }

/* ===== CONTACT ===== */
#contact { background: var(--bg); }
.contact-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start;
}
.contact-info h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 1rem; }
.contact-info p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; margin-bottom: 1.8rem; }
.contact-meta { display: flex; flex-direction: column; gap: 1rem; }
.contact-meta-item { display: flex; align-items: center; gap: 0.8rem; color: var(--text-muted); font-size: 0.9rem; }
.contact-meta-item .icon {
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--accent-glow); border: 1px solid rgba(0,200,255,0.2);
  display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0;
}
.contact-form {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2.5rem;
}
.contact-form h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.contact-form .form-sub { color: var(--text-muted); font-size: 0.87rem; margin-bottom: 1.8rem; }
.form-group { margin-bottom: 1.3rem; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--text-muted); margin-bottom: 0.5rem;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; background: var(--bg);
  border: 1px solid var(--border); color: var(--text);
  padding: 0.8rem 1rem; border-radius: 9px;
  font-size: 0.92rem; font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,200,255,0.1);
}
.form-group textarea { min-height: 130px; }
.form-group select option { background: var(--bg2); }
.form-submit {
  width: 100%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; padding: 0.9rem; border-radius: 10px;
  font-weight: 700; font-size: 0.95rem; border: none;
  transition: opacity var(--transition), transform var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
}
.form-submit:hover { opacity: 0.88; transform: translateY(-1px); }
.form-success {
  display: none; text-align: center; padding: 1.5rem;
  color: var(--accent); font-weight: 600;
}
.form-success .check { font-size: 2.5rem; margin-bottom: 0.5rem; }

/* ===== FOOTER ===== */
footer {
  background: var(--bg2); border-top: 1px solid var(--border);
  padding: 3rem 0 1.5rem;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem; margin-bottom: 2.5rem;
}
.footer-brand p { color: var(--text-muted); font-size: 0.87rem; margin-top: 0.8rem; line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 1rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a { color: var(--text-muted); font-size: 0.85rem; transition: color var(--transition); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 0.5rem;
  font-size: 0.82rem; color: var(--text-muted);
}
.footer-bottom a { color: var(--accent); }

/* ===== TOAST ===== */
.toast {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 999;
  background: var(--bg3); border: 1px solid var(--accent);
  color: var(--text); padding: 1rem 1.5rem; border-radius: 12px;
  font-size: 0.9rem; font-weight: 500; box-shadow: var(--shadow);
  transform: translateY(20px); opacity: 0;
  transition: all 0.3s ease; pointer-events: none;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ===== MOBILE NAV ===== */
.mobile-nav {
  display: none; position: fixed; inset: 0; z-index: 99;
  background: var(--bg2);
  flex-direction: column; align-items: center; justify-content: center;
  gap: 2rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a { font-size: 1.3rem; font-weight: 600; color: var(--text); }
.mobile-nav a:hover { color: var(--accent); }
.mobile-nav-close { position: absolute; top: 1.5rem; right: 1.5rem; font-size: 1.6rem; background: none; color: var(--text); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .contact-wrap { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-menu-btn { display: block; }
  .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-bottom { justify-content: center; text-align: center; }
  section { padding: 3.5rem 0; }
  .products-header { flex-direction: column; align-items: flex-start; }
}

/* ===== FAQ ===== */
#faq { background: var(--bg2); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.8rem; }
.faq-item {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.faq-q {
  width: 100%; text-align: left; background: none; color: var(--text);
  padding: 1.2rem 1.5rem; font-size: 0.97rem; font-weight: 600;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  transition: color var(--transition);
}
.faq-q::after { content: '+'; font-size: 1.3rem; color: var(--accent); flex-shrink: 0; transition: transform var(--transition); }
.faq-q[aria-expanded="true"] { color: var(--accent); }
.faq-q[aria-expanded="true"]::after { transform: rotate(45deg); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-a.open { max-height: 300px; }
.faq-a p {
  padding: 0 1.5rem 1.3rem;
  color: var(--text-muted); font-size: 0.9rem; line-height: 1.7;
}