/*
Theme Name: Allcoola LED — B2B Pro
Theme URI: https://www.digital-led-strips.com
Author: ADY Lighting / Allcoola
Description: High-performance B2B theme for Allcoola Digital LED Strips. Designed for European and North American wholesale buyers. Minimal dependencies, maximum speed.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: Proprietary
Text Domain: allcoola
*/

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Brand colors */
  --c-dark:        #0a0e17;
  --c-dark-2:      #111827;
  --c-dark-3:      #1e2433;
  --c-mid:         #374151;
  --c-border:      #2a3347;
  --c-muted:       #6b7280;
  --c-light:       #d1d5db;
  --c-white:       #f8fafc;

  --c-accent:      #f59e0b;   /* amber — energy, precision */
  --c-accent-2:    #0ea5e9;   /* sky blue — tech, trust */
  --c-success:     #10b981;

  /* Typography */
  --font-display:  'Barlow Condensed', sans-serif;
  --font-body:     'DM Sans', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  /* Spacing */
  --gap-xs: 0.5rem;
  --gap-sm: 1rem;
  --gap-md: 2rem;
  --gap-lg: 4rem;
  --gap-xl: 6rem;

  /* Layout */
  --max-w: 1280px;
  --radius: 4px;
  --radius-lg: 8px;

  /* Transitions */
  --t: 200ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-light);
  background-color: var(--c-dark);
  -webkit-font-smoothing: antialiased;
}

img, video, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font: inherit; border: none; background: none; }
ul, ol { list-style: none; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--c-white);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1rem; color: var(--c-light); }
p:last-child { margin-bottom: 0; }

.text-accent  { color: var(--c-accent); }
.text-blue    { color: var(--c-accent-2); }
.text-muted   { color: var(--c-muted); }
.text-white   { color: var(--c-white); }
.text-sm      { font-size: 0.875rem; }
.text-xs      { font-size: 0.75rem; }
.font-mono    { font-family: var(--font-mono); }
.uppercase    { text-transform: uppercase; letter-spacing: 0.08em; }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section { padding-block: var(--gap-lg); }
.section-sm { padding-block: var(--gap-md); }
.section-lg { padding-block: var(--gap-xl); }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--gap-md); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--gap-md); }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; }

.flex     { display: flex; }
.flex-col { flex-direction: column; }
.items-center  { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm   { gap: var(--gap-sm); }
.gap-md   { gap: var(--gap-md); }

/* ============================================================
   COMPONENTS — BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: var(--t);
  white-space: nowrap;
}

.btn-primary {
  background: var(--c-accent);
  color: var(--c-dark);
}
.btn-primary:hover { background: #fbbf24; transform: translateY(-1px); }

.btn-outline {
  border: 1px solid var(--c-accent);
  color: var(--c-accent);
}
.btn-outline:hover { background: var(--c-accent); color: var(--c-dark); }

.btn-ghost {
  border: 1px solid var(--c-border);
  color: var(--c-light);
}
.btn-ghost:hover { border-color: var(--c-light); }

.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.8rem; }
.btn-lg { padding: 1rem 2.5rem; font-size: 1rem; }

/* ============================================================
   COMPONENTS — BADGES & TAGS
   ============================================================ */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 2px;
  font-family: var(--font-mono);
}
.badge-amber  { background: rgba(245,158,11,0.15); color: var(--c-accent); border: 1px solid rgba(245,158,11,0.3); }
.badge-blue   { background: rgba(14,165,233,0.12); color: var(--c-accent-2); border: 1px solid rgba(14,165,233,0.25); }
.badge-green  { background: rgba(16,185,129,0.12); color: var(--c-success); border: 1px solid rgba(16,185,129,0.25); }
.badge-gray   { background: rgba(107,114,128,0.2); color: var(--c-light); border: 1px solid var(--c-border); }

/* ============================================================
   COMPONENTS — CARDS
   ============================================================ */
.card {
  background: var(--c-dark-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--t), transform var(--t);
}
.card:hover {
  border-color: rgba(245,158,11,0.4);
  transform: translateY(-2px);
}
.card-body { padding: 1.5rem; }

/* ============================================================
   COMPONENTS — SECTION HEADER
   ============================================================ */
.section-header {
  margin-bottom: var(--gap-md);
}
.section-header .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-accent);
  display: block;
  margin-bottom: 0.5rem;
}
.section-header h2 {
  margin-bottom: 1rem;
}
.section-header p {
  font-size: 1.1rem;
  color: var(--c-muted);
  max-width: 600px;
}

/* ============================================================
   COMPONENTS — DIVIDER
   ============================================================ */
.divider {
  width: 100%;
  height: 1px;
  background: var(--c-border);
  margin-block: var(--gap-md);
}
.divider-accent {
  width: 3rem;
  height: 2px;
  background: var(--c-accent);
  margin-bottom: 1.5rem;
}

/* ============================================================
   HEADER / NAV
   ============================================================ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,14,23,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  transition: background var(--t);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-white);
  letter-spacing: -0.02em;
}
.site-logo .logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

/* Primary Nav */
#primary-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}
#primary-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-muted);
  transition: color var(--t);
  position: relative;
}
#primary-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--c-accent);
  transition: width var(--t);
}
#primary-nav a:hover { color: var(--c-white); }
#primary-nav a:hover::after { width: 100%; }

/* Dropdown */
.nav-item { position: relative; }
.nav-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-dark-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  min-width: 200px;
  white-space: nowrap;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.nav-item:hover .nav-dropdown { display: block; }
.nav-dropdown a {
  display: block;
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
}
.nav-dropdown a:hover { background: var(--c-dark-3); color: var(--c-white); }
.nav-dropdown a::after { display: none; }

/* Header CTA */
.header-cta { display: flex; align-items: center; gap: 1rem; }
.header-contact {
  font-size: 0.8rem;
  color: var(--c-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.header-contact a { color: var(--c-accent); }

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-light);
  transition: var(--t);
  border-radius: 2px;
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--c-dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(14,165,233,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(245,158,11,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 1.5rem;
}
.hero-eyebrow::before {
  content: '';
  width: 2rem;
  height: 1px;
  background: var(--c-accent);
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 0.95;
  margin-bottom: 1.5rem;
}
.hero-title .line-2 { color: var(--c-accent); display: block; }

.hero-desc {
  font-size: 1.15rem;
  color: var(--c-muted);
  max-width: 520px;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }

.hero-stats {
  display: flex;
  gap: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--c-border);
}
.hero-stat-val {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--c-white);
  line-height: 1;
}
.hero-stat-label {
  font-size: 0.75rem;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.25rem;
}

/* ============================================================
   TRUST BAR
   ============================================================ */
#trust-bar {
  background: var(--c-dark-2);
  border-block: 1px solid var(--c-border);
  padding-block: 1rem;
}
.trust-items {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.trust-item svg { color: var(--c-accent); }

/* ============================================================
   PRODUCT CATEGORIES
   ============================================================ */
#product-categories {
  background: var(--c-dark);
}

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

.cat-card {
  position: relative;
  background: var(--c-dark-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  overflow: hidden;
  transition: border-color var(--t), transform var(--t);
  cursor: pointer;
}
.cat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms ease;
}
.cat-card:hover::before { transform: scaleX(1); }
.cat-card:hover {
  border-color: rgba(245,158,11,0.3);
  transform: translateY(-3px);
}

.cat-icon {
  width: 36px;
  height: 36px;
  margin-bottom: 1rem;
  color: var(--c-accent-2);
}
.cat-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-body);
  color: var(--c-white);
  margin-bottom: 0.4rem;
}
.cat-card p {
  font-size: 0.78rem;
  color: var(--c-muted);
  line-height: 1.5;
}
.cat-arrow {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--c-accent);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-mono);
}

/* ============================================================
   WHY CHOOSE / USP SECTION
   ============================================================ */
#why-allcoola {
  background: var(--c-dark-2);
  border-block: 1px solid var(--c-border);
}

.usp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.usp-list { display: flex; flex-direction: column; gap: 1.5rem; }

.usp-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.25rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  background: var(--c-dark);
  transition: border-color var(--t);
}
.usp-item:hover { border-color: rgba(245,158,11,0.3); }

.usp-icon-wrap {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent);
}
.usp-text h4 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-white);
  margin-bottom: 0.25rem;
}
.usp-text p { font-size: 0.85rem; color: var(--c-muted); margin: 0; }

.usp-visual {
  position: relative;
  background: var(--c-dark);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  overflow: hidden;
}
.usp-visual-title {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 1.5rem;
}

.delivery-card {
  background: var(--c-dark-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.delivery-card .days {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--c-accent);
  line-height: 1;
}
.delivery-card .days span { font-size: 1rem; color: var(--c-muted); }

.cert-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.cert-badge {
  padding: 0.4rem 0.8rem;
  background: var(--c-dark-3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-light);
}

/* ============================================================
   OEM/ODM SECTION
   ============================================================ */
#oem-odm {
  background: var(--c-dark);
  position: relative;
  overflow: hidden;
}
#oem-odm::before {
  content: 'OEM';
  position: absolute;
  right: -2rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: 18rem;
  font-weight: 900;
  color: rgba(255,255,255,0.015);
  pointer-events: none;
  line-height: 1;
}

.oem-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
  margin-block: 3rem;
}
.oem-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: var(--c-border);
  z-index: 0;
}

.oem-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 0.5rem;
}
.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--c-dark-2);
  border: 2px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: 1rem;
  transition: border-color var(--t), background var(--t);
}
.oem-step:hover .step-num {
  border-color: var(--c-accent);
  background: rgba(245,158,11,0.1);
}
.oem-step h4 {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.oem-step p { font-size: 0.75rem; color: var(--c-muted); }

.oem-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.oem-spec {
  background: var(--c-dark-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.oem-spec .val {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-accent);
}
.oem-spec .label { font-size: 0.75rem; color: var(--c-muted); margin-top: 0.2rem; }

/* ============================================================
   FEATURED PRODUCTS
   ============================================================ */
#featured-products { background: var(--c-dark-2); border-top: 1px solid var(--c-border); }

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.product-card {
  background: var(--c-dark);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--t), transform var(--t);
}
.product-card:hover {
  border-color: rgba(14,165,233,0.4);
  transform: translateY(-3px);
}

.product-img-wrap {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--c-dark-3);
  overflow: hidden;
}
.product-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}
.product-card:hover .product-img-wrap img { transform: scale(1.04); }

.product-badges {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.product-body { padding: 1.25rem; }
.product-body h3 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--c-white);
  line-height: 1.3;
}
.product-spec-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}
.spec-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.2rem 0.5rem;
  background: var(--c-dark-3);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--c-border);
}
.product-footer .price {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--c-muted);
}
.product-footer .btn { padding: 0.4rem 0.9rem; font-size: 0.75rem; }

/* ============================================================
   CERTIFICATIONS
   ============================================================ */
#certifications {
  background: var(--c-dark);
  text-align: center;
}
.cert-grid {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-block: 2.5rem;
}
.cert-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.5rem 2rem;
  background: var(--c-dark-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  min-width: 120px;
  transition: border-color var(--t);
}
.cert-item:hover { border-color: rgba(245,158,11,0.4); }
.cert-name {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-accent);
}
.cert-desc { font-size: 0.7rem; color: var(--c-muted); text-align: center; }

/* ============================================================
   INQUIRY / CTA SECTION
   ============================================================ */
#inquiry-cta {
  background: var(--c-dark-2);
  border-block: 1px solid var(--c-border);
}
.inquiry-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  font-family: var(--font-mono);
}
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--c-dark);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  font: inherit;
  font-size: 0.9rem;
  color: var(--c-white);
  transition: border-color var(--t);
  outline: none;
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-accent);
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* ============================================================
   FOOTER
   ============================================================ */
#site-footer {
  background: var(--c-dark);
  border-top: 1px solid var(--c-border);
  padding-block: 3rem 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p { font-size: 0.875rem; color: var(--c-muted); margin-block: 1rem; max-width: 280px; }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--c-muted);
  margin-bottom: 0.5rem;
}
.footer-contact-item a { color: var(--c-accent-2); }

.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 1.25rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col ul a {
  font-size: 0.85rem;
  color: var(--c-muted);
  transition: color var(--t);
}
.footer-col ul a:hover { color: var(--c-white); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-border);
  font-size: 0.75rem;
  color: var(--c-muted);
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom a { color: var(--c-muted); }
.footer-bottom a:hover { color: var(--c-white); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .usp-grid { grid-template-columns: 1fr; }
  .inquiry-inner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .oem-steps { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
  .oem-steps::before { display: none; }
}

@media (max-width: 768px) {
  :root { --gap-lg: 3rem; --gap-xl: 4rem; }
  #primary-nav { display: none; }
  #primary-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0; right: 0;
    background: var(--c-dark-2);
    border-bottom: 1px solid var(--c-border);
    padding: 1.5rem;
    gap: 1rem;
  }
  .nav-toggle { display: flex; }
  .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
  .trust-items { gap: 1.5rem; }
  .oem-steps { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .form-row { grid-template-columns: 1fr; }
  .header-contact { display: none; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.5rem; }
  .oem-steps { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   SINGLE PRODUCT PAGE
   ============================================================ */
.product-single-header {
  background: var(--c-dark-2);
  border-bottom: 1px solid var(--c-border);
  padding-block: 3rem;
}
.product-single-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.product-gallery { position: sticky; top: 88px; }
.product-gallery-main {
  aspect-ratio: 4/3;
  background: var(--c-dark);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 1rem;
}
.product-gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.product-gallery-thumbs { display: flex; gap: 0.5rem; }
.product-thumb {
  width: 72px;
  height: 54px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--t);
}
.product-thumb:hover, .product-thumb.active { border-color: var(--c-accent); }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; }

.product-info h1 { margin-bottom: 1rem; }
.product-meta { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-block: 1.5rem;
  font-size: 0.875rem;
}
.spec-table tr { border-bottom: 1px solid var(--c-border); }
.spec-table td { padding: 0.6rem 0.75rem; }
.spec-table td:first-child {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: 40%;
}
.spec-table td:last-child { color: var(--c-white); }
.spec-table tr:nth-child(odd) td { background: rgba(255,255,255,0.02); }

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.mt-0  { margin-top: 0; }
.mt-sm { margin-top: var(--gap-sm); }
.mt-md { margin-top: var(--gap-md); }
.mb-sm { margin-bottom: var(--gap-sm); }
.mb-md { margin-bottom: var(--gap-md); }
.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }
.w-full { width: 100%; }
.hidden { display: none; }

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}