/*
Theme Name: ATSI Power Management
Theme URI: https://www.atsi.co.uk
Author: Advanced Technological Systems International Ltd
Author URI: https://www.atsi.co.uk
Description: Military-grade power management products theme for ATSI Ltd. Dark navy design with electric blue accents.
Version: 1.0.0
License: Proprietary
Text Domain: atsi
*/

/* Prevent horizontal scroll revealing off-screen mobile panel */
html { overflow-x: hidden; }

/* ============================================================
   DESIGN SYSTEM
   ============================================================ */
:root {
  --navy: #0a1628;
  --navy-mid: #112240;
  --navy-light: #1a3560;
  --steel: #2d6a9f;
  --electric: #00b4d8;
  --amber: #f4a300;
  --white: #ffffff;
  --off-white: #f0f4f8;
  --text-light: #a8b8cc;
  --border: rgba(255,255,255,0.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Barlow', sans-serif;
  background: var(--navy);
  color: var(--white);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }

/* ============================================================
   TOP BAR
   ============================================================ */
.topbar {
  background: var(--navy-mid);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
  font-size: 13px;
  color: var(--text-light);
}
.topbar .inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  display: flex; justify-content: space-between; align-items: center;
}
.topbar a { color: var(--text-light); text-decoration: none; }
.topbar a:hover { color: var(--electric); }
.topbar .contact-strip { display: flex; gap: 24px; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  background: var(--navy);
  border-bottom: 2px solid var(--electric);
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
}
.site-logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--white);
}
.logo-mark {
  width: 44px; height: 44px;
  background: var(--electric);
  clip-path: polygon(0 0, 85% 0, 100% 15%, 100% 100%, 15% 100%, 0 85%);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 800; font-size: 18px; color: var(--navy);
  flex-shrink: 0;
}
.logo-text {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700; font-size: 22px; letter-spacing: 2px;
  line-height: 1.1;
}
.logo-text span { display: block; font-size: 11px; font-weight: 400; color: var(--electric); letter-spacing: 3px; }

/* WP nav menu overrides */
#primary-menu {
  display: flex; list-style: none; gap: 2px; margin: 0; padding: 0;
}
#primary-menu a {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600; font-size: 15px; letter-spacing: 1px;
  text-transform: uppercase; text-decoration: none; color: var(--text-light);
  padding: 8px 16px; border-radius: 3px;
  transition: color 0.2s, background 0.2s;
  display: block;
}
#primary-menu a:hover,
#primary-menu .current-menu-item > a,
#primary-menu .current-menu-ancestor > a { color: var(--white); background: rgba(0,180,216,0.1); }
#primary-menu .menu-item-has-children { position: relative; }
#primary-menu .menu-item-has-children:hover > .sub-menu { display: block; }
#primary-menu .sub-menu {
  display: none; position: absolute; top: 100%; left: 0;
  background: var(--navy-mid); border: 1px solid var(--border);
  border-top: 2px solid var(--electric); min-width: 220px;
  padding: 8px 0; z-index: 200; list-style: none; margin: 0;
}
#primary-menu .sub-menu a { display: block; padding: 10px 20px; border-radius: 0; color: var(--text-light); }
#primary-menu .sub-menu a:hover { background: rgba(0,180,216,0.08); color: var(--electric); }
.nav-cta {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700; font-size: 14px; letter-spacing: 1px; text-transform: uppercase;
  background: var(--electric); color: var(--navy);
  padding: 10px 22px; text-decoration: none; border-radius: 3px;
  transition: background 0.2s, transform 0.15s; white-space: nowrap;
}
.nav-cta:hover { background: var(--amber); transform: translateY(-1px); }

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
  background: var(--navy-mid); border-bottom: 1px solid var(--border); padding: 12px 0;
}
.breadcrumb .inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-light); flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-light); text-decoration: none; }
.breadcrumb a:hover { color: var(--electric); }
.breadcrumb .sep { color: rgba(255,255,255,0.2); }
.breadcrumb .current { color: var(--electric); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700; font-size: 15px; letter-spacing: 1px; text-transform: uppercase;
  background: var(--electric); color: var(--navy);
  padding: 14px 32px; text-decoration: none; border-radius: 3px;
  transition: all 0.2s; display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { background: var(--white); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,180,216,0.3); }
.btn-outline {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700; font-size: 15px; letter-spacing: 1px; text-transform: uppercase;
  border: 1.5px solid rgba(255,255,255,0.3); color: var(--white);
  padding: 14px 32px; text-decoration: none; border-radius: 3px;
  transition: all 0.2s; display: inline-flex; align-items: center; gap: 8px;
}
.btn-outline:hover { border-color: var(--electric); color: var(--electric); }
.btn-dark {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700; font-size: 15px; letter-spacing: 1px; text-transform: uppercase;
  background: var(--navy); color: var(--white);
  padding: 14px 36px; text-decoration: none; border-radius: 3px;
  display: inline-block; transition: all 0.2s; margin: 0 6px;
}
.btn-dark:hover { background: var(--navy-mid); transform: translateY(-2px); }

/* ============================================================
   SECTIONS (COMMON)
   ============================================================ */
.section { padding: 90px 24px; }
.section-inner { max-width: 1280px; margin: 0 auto; }
.section-label {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 12px; font-weight: 600; letter-spacing: 4px; text-transform: uppercase;
  color: var(--electric); margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px;
}
.section-label::before { content: ''; width: 24px; height: 2px; background: var(--electric); }
.section-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(32px, 4vw, 52px); font-weight: 800;
  text-transform: uppercase; line-height: 1.05; margin-bottom: 16px;
}
.section-title em { color: var(--electric); font-style: normal; }
.section-desc { font-size: 16px; color: var(--text-light); line-height: 1.7; max-width: 780px; }

/* ============================================================
   HERO (HOMEPAGE)
   ============================================================ */
.hero {
  position: relative; overflow: hidden;
  min-height: 88vh; display: flex; align-items: center;
  background: var(--navy);
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 80% 50%, rgba(0,180,216,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 80% at -10% 100%, rgba(17,34,64,0.9) 0%, transparent 50%),
    linear-gradient(135deg, #0a1628 0%, #112240 50%, #0d1e3a 100%);
}
.hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,180,216,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,216,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 1280px; margin: 0 auto; padding: 80px 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center;
}
.hero-eyebrow {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 13px; font-weight: 600; letter-spacing: 4px; text-transform: uppercase;
  color: var(--electric); display: flex; align-items: center; gap: 12px; margin-bottom: 20px;
}
.hero-eyebrow::before { content: ''; width: 32px; height: 2px; background: var(--electric); }
.hero h1 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(44px, 6vw, 76px); font-weight: 800;
  line-height: 1.0; letter-spacing: -1px; text-transform: uppercase; margin-bottom: 28px;
}
.hero h1 em { color: var(--electric); font-style: normal; }
.hero p { font-size: 17px; line-height: 1.7; color: var(--text-light); max-width: 520px; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border); border-radius: 4px;
  overflow: hidden; margin-top: 48px;
}
.stat { background: var(--navy-mid); padding: 24px 20px; text-align: center; }
.stat-num { font-family: 'Barlow Condensed', sans-serif; font-size: 36px; font-weight: 800; color: var(--electric); line-height: 1; }
.stat-label { font-size: 12px; color: var(--text-light); letter-spacing: 1px; margin-top: 4px; text-transform: uppercase; }

/* Hero visual / power rings */
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; }
.power-display { width: 100%; aspect-ratio: 1; max-width: 440px; position: relative; }
.power-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(0,180,216,0.15);
  animation: rotate-ring 20s linear infinite;
}
.ring-1 { inset: 0; border-color: rgba(0,180,216,0.2); }
.ring-2 { inset: 10%; border-color: rgba(0,180,216,0.12); animation-direction: reverse; animation-duration: 30s; }
.ring-3 { inset: 20%; border-color: rgba(0,180,216,0.08); }
@keyframes rotate-ring { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.power-core {
  position: absolute; inset: 30%;
  background: radial-gradient(circle, rgba(0,180,216,0.2) 0%, rgba(0,180,216,0.05) 50%, transparent 70%);
  border-radius: 50%; border: 2px solid var(--electric);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Barlow Condensed', sans-serif; font-size: 14px; font-weight: 700;
  letter-spacing: 2px; text-align: center; color: var(--electric);
}
.power-node { position: absolute; width: 10px; height: 10px; background: var(--electric); border-radius: 50%; box-shadow: 0 0 12px var(--electric); }
.node-1 { top: 10%; left: 50%; transform: translateX(-50%); }
.node-2 { top: 50%; right: 5%; transform: translateY(-50%); }
.node-3 { bottom: 10%; left: 50%; transform: translateX(-50%); }
.node-4 { top: 50%; left: 5%; transform: translateY(-50%); }

/* ============================================================
   PRODUCT CATEGORY CARDS (HOMEPAGE)
   ============================================================ */
.products-section { background: var(--navy-mid); }
.products-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: 56px; flex-wrap: wrap; gap: 24px;
}
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; }
.product-card {
  background: var(--navy); border: 1px solid var(--border);
  padding: 36px 32px; text-decoration: none; color: var(--white);
  position: relative; overflow: hidden; transition: all 0.3s;
  display: flex; flex-direction: column;
}
.product-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--electric); transform: scaleX(0); transform-origin: left; transition: transform 0.3s;
}
.product-card:hover { background: var(--navy-light); border-color: rgba(0,180,216,0.3); transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0,0,0,0.4); }
.product-card:hover::before { transform: scaleX(1); }
.product-icon {
  width: 52px; height: 52px; margin-bottom: 24px;
  background: rgba(0,180,216,0.1); border: 1px solid rgba(0,180,216,0.2);
  border-radius: 4px; display: flex; align-items: center; justify-content: center;
  font-size: 22px;
}
.product-card h3 {
  font-family: 'Barlow Condensed', sans-serif; font-size: 22px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px;
}
.product-card p { font-size: 14px; color: var(--text-light); line-height: 1.6; flex: 1; }
.product-card .card-footer {
  margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--border);
  font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase; color: var(--electric);
  display: flex; align-items: center; gap: 8px;
}
.product-card .card-footer::after { content: '→'; transition: transform 0.2s; }
.product-card:hover .card-footer::after { transform: translateX(6px); }
.product-tag {
  display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 1px;
  text-transform: uppercase; background: rgba(244,163,0,0.15); color: var(--amber);
  border: 1px solid rgba(244,163,0,0.3); padding: 3px 10px; border-radius: 2px; margin-bottom: 12px;
}

/* ============================================================
   PRODUCT ARCHIVE / GRID
   ============================================================ */
.archive-header {
  background: var(--navy);
  padding: 60px 24px 0;
}
.archive-header-inner { max-width: 1280px; margin: 0 auto; }
.archive-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; margin-top: 48px;
}
.archive-card {
  background: var(--navy-mid); border: 1px solid var(--border);
  text-decoration: none; color: var(--white);
  display: flex; flex-direction: column; overflow: hidden;
  transition: background 0.2s;
}
.archive-card:hover { background: var(--navy-light); }
.archive-card-img {
  width: 100%; aspect-ratio: 4/3; overflow: hidden;
  background: var(--navy); display: flex; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--border);
}
.archive-card-img img { width: 100%; height: 100%; object-fit: cover; }
.archive-card-img .placeholder-icon { font-size: 48px; opacity: 0.3; }
.archive-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.archive-card-cat {
  font-family: 'Barlow Condensed', sans-serif; font-size: 11px; font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase; color: var(--electric); margin-bottom: 8px;
}
.archive-card-body h3 {
  font-family: 'Barlow Condensed', sans-serif; font-size: 20px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px;
}
.archive-card-model { font-size: 13px; color: var(--text-light); margin-bottom: 8px; }
.archive-card-nsn {
  font-family: 'Barlow Condensed', sans-serif; font-size: 12px; letter-spacing: 1px;
  color: var(--amber); background: rgba(244,163,0,0.08);
  border: 1px solid rgba(244,163,0,0.2); padding: 3px 8px;
  border-radius: 2px; display: inline-block; margin-bottom: 12px;
}
.archive-card-link {
  margin-top: auto; padding-top: 16px; border-top: 1px solid var(--border);
  font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase; color: var(--electric);
}

/* Category filter bar */
.cat-filter {
  background: var(--navy-mid); border-bottom: 1px solid var(--border);
  padding: 16px 8px;
}
.cat-filter-inner { max-width: 1280px; margin: 0 auto; display: flex; gap: 8px; flex-wrap: wrap; }
.cat-filter a {
  font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase; text-decoration: none;
  padding: 7px 16px; border-radius: 3px; border: 1px solid var(--border);
  color: var(--text-light); transition: all 0.2s;
}
.cat-filter a:hover, .cat-filter a.active { background: rgba(0,180,216,0.1); border-color: var(--electric); color: var(--electric); }

/* ============================================================
   PRODUCT HERO (SINGLE)
   ============================================================ */
.product-hero {
  position: relative; overflow: hidden;
  padding: 80px 24px 0; background: var(--navy);
}
.product-hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 80% at 75% 40%, rgba(0,180,216,0.06) 0%, transparent 60%),
    linear-gradient(135deg, #0a1628 0%, #112240 60%, #0d1e3a 100%);
}
.product-hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,180,216,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,216,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.product-hero-inner {
  max-width: 1280px; margin: 0 auto; position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start;
}
.product-eyebrow {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 12px; font-weight: 600; letter-spacing: 4px; text-transform: uppercase;
  color: var(--electric); display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
}
.product-eyebrow::before { content: ''; width: 32px; height: 2px; background: var(--electric); }
.product-hero h1 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(48px, 7vw, 88px); font-weight: 800;
  line-height: 0.95; letter-spacing: -1px; text-transform: uppercase; margin-bottom: 8px;
}
.product-hero h1 em { color: var(--electric); font-style: normal; display: block; font-size: 0.52em; letter-spacing: 4px; }
.product-subtitle {
  font-family: 'Barlow Condensed', sans-serif; font-size: 20px; font-weight: 600;
  color: var(--text-light); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 24px;
}
.nsn-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(244,163,0,0.1); border: 1px solid rgba(244,163,0,0.3);
  color: var(--amber); padding: 8px 16px; border-radius: 3px;
  font-family: 'Barlow Condensed', sans-serif; font-size: 13px;
  font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 32px;
}
.nsn-badge::before { content: '★'; font-size: 11px; }
.product-desc { font-size: 16px; line-height: 1.75; color: var(--text-light); margin-bottom: 36px; max-width: 520px; }
.product-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 56px; }

/* Product image panel */
.product-hero-visual { position: relative; display: flex; flex-direction: column; }
.product-image-frame {
  position: relative; width: 100%;
  background: var(--navy-mid); border: 1px solid var(--border); border-bottom: none;
  overflow: hidden; min-height: 360px;
  display: flex; align-items: center; justify-content: center;
}
.product-image-frame::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: linear-gradient(90deg, var(--electric), var(--steel));
}
.product-image-frame img { max-width: 100%; max-height: 400px; padding: 24px; object-fit: contain; }
.corner { position: absolute; width: 16px; height: 16px; border-color: var(--electric); border-style: solid; opacity: 0.5; }
.corner-tl { top: 12px; left: 12px; border-width: 2px 0 0 2px; }
.corner-tr { top: 12px; right: 12px; border-width: 2px 2px 0 0; }
.corner-bl { bottom: 12px; left: 12px; border-width: 0 0 2px 2px; }
.corner-br { bottom: 12px; right: 12px; border-width: 0 2px 2px 0; }
.image-caption {
  width: 100%; background: rgba(0,180,216,0.06); border: 1px solid var(--border); border-top: none;
  padding: 12px 20px; font-family: 'Barlow Condensed', sans-serif; font-size: 12px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--text-light);
  display: flex; justify-content: space-between; align-items: center;
}

/* ============================================================
   STAT STRIP
   ============================================================ */
.stat-strip { background: var(--navy-mid); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stat-strip-inner { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: repeat(5, 1fr); }
.stat-cell { padding: 32px 24px; border-right: 1px solid var(--border); text-align: center; }
.stat-cell:last-child { border-right: none; }
.stat-value { font-family: 'Barlow Condensed', sans-serif; font-size: 38px; font-weight: 800; color: var(--electric); line-height: 1; }
.stat-unit { font-family: 'Barlow Condensed', sans-serif; font-size: 16px; color: var(--electric); margin-left: 2px; }
.stat-cell .stat-label { font-size: 12px; color: var(--text-light); letter-spacing: 1px; text-transform: uppercase; margin-top: 6px; }

/* ============================================================
   FEATURES
   ============================================================ */
.features-section { background: var(--navy-mid); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; margin-top: 48px; background: var(--border); }
.feature-card {
  background: var(--navy); padding: 36px 32px;
  position: relative; overflow: hidden; transition: background 0.3s;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--electric); transform: scaleX(0); transform-origin: left; transition: transform 0.3s;
}
.feature-card:hover { background: var(--navy-light); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 52px; height: 52px; margin-bottom: 20px;
  background: rgba(0,180,216,0.1); border: 1px solid rgba(0,180,216,0.2);
  border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.feature-card h3 {
  font-family: 'Barlow Condensed', sans-serif; font-size: 20px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; color: var(--white);
}
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.65; }

/* ============================================================
   TECHNICAL SPECS
   ============================================================ */
.specs-section { background: var(--navy); }
.specs-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; margin-top: 56px; }
.spec-table { width: 100%; }
.spec-row { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--border); padding: 16px 0; font-size: 15px; }
.spec-row:first-child { border-top: 1px solid var(--border); }
.spec-key { color: var(--text-light); font-weight: 400; }
.spec-val { color: var(--white); font-weight: 600; text-align: right; }
.spec-side { display: flex; flex-direction: column; gap: 2px; }
.spec-callout {
  background: var(--navy-mid); border: 1px solid var(--border); border-left: 3px solid var(--electric); padding: 28px;
}
.spec-callout + .spec-callout { margin-top: 2px; }
.spec-callout.amber { border-left-color: var(--amber); }
.spec-callout h4 {
  font-family: 'Barlow Condensed', sans-serif; font-size: 17px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; color: var(--electric);
}
.spec-callout.amber h4 { color: var(--amber); }
.spec-callout p { font-size: 14px; color: var(--text-light); line-height: 1.65; }

/* ============================================================
   ENVIRONMENTAL PERFORMANCE
   ============================================================ */
.env-section { background: var(--navy-mid); }
.env-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; margin-top: 48px; background: var(--border); }
.env-item { background: var(--navy); padding: 40px; border-left: 3px solid transparent; transition: border-color 0.2s; }
.env-item:hover { border-left-color: var(--electric); }
.env-num { font-family: 'Barlow Condensed', sans-serif; font-size: 60px; font-weight: 800; color: rgba(0,180,216,0.1); line-height: 1; margin-bottom: 8px; }
.env-item h4 { font-family: 'Barlow Condensed', sans-serif; font-size: 20px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; color: var(--white); }
.env-item p { font-size: 15px; color: var(--text-light); line-height: 1.7; }

/* ============================================================
   DOWNLOADS
   ============================================================ */
.downloads-section { background: var(--navy); }
.downloads-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; margin-top: 48px; background: var(--border); }
.download-item {
  background: var(--navy-mid); padding: 28px; display: flex; align-items: center; gap: 20px;
  text-decoration: none; color: var(--white); transition: background 0.2s;
}
.download-item:hover { background: var(--navy-light); }
.dl-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  background: rgba(244,163,0,0.12); border: 1px solid rgba(244,163,0,0.25);
  border-radius: 3px; display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: var(--amber);
}
.dl-info { flex: 1; }
.dl-title { font-family: 'Barlow Condensed', sans-serif; font-size: 16px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
.dl-lang { font-size: 13px; color: var(--text-light); }
.dl-arrow { font-size: 18px; color: var(--text-light); transition: color 0.2s, transform 0.2s; }
.download-item:hover .dl-arrow { color: var(--electric); transform: translateX(4px); }

/* ============================================================
   NSN BANNER
   ============================================================ */
.nsn-banner { background: var(--electric); color: var(--navy); padding: 60px 24px; text-align: center; }
.nsn-banner h2 { font-family: 'Barlow Condensed', sans-serif; font-size: 42px; font-weight: 800; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.nsn-number-display { font-family: 'Barlow Condensed', sans-serif; font-size: 28px; font-weight: 700; letter-spacing: 6px; opacity: 0.7; margin-bottom: 16px; }
.nsn-banner p { font-size: 17px; max-width: 540px; margin: 0 auto 28px; opacity: 0.8; }

/* ============================================================
   SPEC SECTION (TECHNOLOGY / HOMEPAGE)
   ============================================================ */
.spec-section { background: var(--navy); }
.spec-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.spec-list { margin-top: 40px; }
.spec-item { display: grid; grid-template-columns: 200px 1fr; border-bottom: 1px solid var(--border); padding: 16px 0; font-size: 15px; }
.spec-item:first-child { border-top: 1px solid var(--border); }
.spec-item .spec-key { color: var(--text-light); font-weight: 500; }
.spec-item .spec-val { color: var(--white); font-weight: 600; }
.spec-visual { background: var(--navy-mid); border: 1px solid var(--border); border-radius: 4px; padding: 48px; text-align: center; position: relative; overflow: hidden; }
.battery-pack { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 0 auto 24px; max-width: 240px; }
.cell { background: linear-gradient(180deg, var(--steel) 0%, var(--navy-light) 100%); border: 1px solid rgba(0,180,216,0.3); border-radius: 3px; height: 64px; position: relative; overflow: hidden; }
.cell.charged { background: linear-gradient(180deg, var(--electric) 0%, var(--steel) 100%); }
.cell::after { content: ''; position: absolute; top: 4px; left: 50%; transform: translateX(-50%); width: 8px; height: 4px; background: rgba(255,255,255,0.3); border-radius: 2px; }
.spec-caption { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: var(--text-light); }

/* ============================================================
   SECTORS
   ============================================================ */
.sectors-section { background: var(--navy-mid); }
.sectors-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); margin-top: 56px; }
.sector-item { background: var(--navy); padding: 40px 28px; text-align: center; cursor: pointer; transition: background 0.2s; }
.sector-item:hover { background: rgba(0,180,216,0.06); }
.sector-icon { font-size: 36px; margin-bottom: 16px; }
.sector-item h4 { font-family: 'Barlow Condensed', sans-serif; font-size: 17px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
.sector-item p { font-size: 13px; color: var(--text-light); line-height: 1.5; }

/* ============================================================
   WHY ATSI
   ============================================================ */
.why-section { background: var(--navy); }
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; margin-top: 56px; }
.why-item { background: var(--navy-mid); padding: 40px; border-left: 3px solid transparent; transition: border-color 0.2s; }
.why-item:hover { border-left-color: var(--electric); }
.why-num { font-family: 'Barlow Condensed', sans-serif; font-size: 60px; font-weight: 800; color: rgba(0,180,216,0.1); line-height: 1; margin-bottom: 12px; }
.why-item h4 { font-family: 'Barlow Condensed', sans-serif; font-size: 20px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; color: var(--white); }
.why-item p { font-size: 15px; color: var(--text-light); line-height: 1.7; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: #060e1a; border-top: 2px solid var(--electric); padding: 64px 24px 32px; }
.footer-inner { max-width: 1280px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid var(--border); }
.footer-brand p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-top: 16px; max-width: 280px; }
.footer-col h5 { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--electric); margin-bottom: 20px; }
.footer-col ul { list-style: none; }
.footer-col ul li + li { margin-top: 10px; }
.footer-col ul a { font-size: 14px; color: var(--text-light); text-decoration: none; transition: color 0.2s; }
.footer-col ul a:hover { color: var(--white); }
.footer-contact { font-size: 14px; color: var(--text-light); line-height: 1.8; }
.footer-contact strong { color: var(--white); display: block; }
.footer-bottom { padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer-bottom p { font-size: 13px; color: var(--text-light); }
.accreditations { display: flex; gap: 12px; align-items: center; }
.badge { background: var(--navy-mid); border: 1px solid var(--border); padding: 6px 12px; border-radius: 3px; font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--text-light); }

/* ============================================================
   PAGE CONTENT
   ============================================================ */
.page-content { max-width: 1280px; margin: 0 auto; padding: 80px 24px; }
.page-content h1, .page-content h2, .page-content h3 { font-family: 'Barlow Condensed', sans-serif; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.page-content h1 { font-size: clamp(32px, 5vw, 60px); font-weight: 800; }
.page-content h2 { font-size: clamp(24px, 3vw, 40px); font-weight: 700; color: var(--electric); margin-top: 48px; }
.page-content h3 { font-size: 22px; font-weight: 700; margin-top: 32px; }
.page-content p { font-size: 16px; color: var(--text-light); line-height: 1.8; margin-bottom: 20px; }
.page-content ul, .page-content ol { color: var(--text-light); font-size: 15px; line-height: 1.8; padding-left: 24px; margin-bottom: 20px; }
.page-content a { color: var(--electric); }
.page-content a:hover { color: var(--white); }
.page-content img { border-radius: 4px; border: 1px solid var(--border); }
.page-content table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 14px; }
.page-content table th { background: var(--navy-mid); padding: 12px 16px; text-align: left; font-family: 'Barlow Condensed', sans-serif; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--electric); border-bottom: 2px solid var(--electric); }
.page-content table td { padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--text-light); }
.page-content table tr:hover td { background: rgba(0,180,216,0.04); }

/* 404 */
.error-404 { min-height: 70vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 80px 24px; }
.error-404 .error-code { font-family: 'Barlow Condensed', sans-serif; font-size: clamp(80px, 20vw, 200px); font-weight: 800; color: rgba(0,180,216,0.08); line-height: 1; }
.error-404 h1 { font-family: 'Barlow Condensed', sans-serif; font-size: 40px; font-weight: 800; text-transform: uppercase; margin-bottom: 16px; }
.error-404 p { color: var(--text-light); margin-bottom: 32px; }

/* ============================================================
   NAV TOGGLE (HAMBURGER)
   ============================================================ */
.nav-right {
  display: flex; align-items: center; gap: 12px;
}
.nav-toggle {
  display: none;
  flex-direction: column; justify-content: center; align-items: center;
  width: 44px; height: 44px; gap: 6px;
  background: none; border: 1px solid rgba(255,255,255,0.15);
  border-radius: 3px; cursor: pointer; padding: 0; flex-shrink: 0;
  transition: border-color 0.2s;
}
.nav-toggle:hover { border-color: var(--electric); }
.burger-bar {
  display: block; width: 22px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
  pointer-events: none;
}
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ============================================================
   MOBILE MENU PANEL
   ============================================================ */
.mobile-menu {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(360px, 92vw);
  background: var(--navy-mid);
  border-left: 2px solid var(--electric);
  z-index: 1000;
  display: flex; flex-direction: column;
  transform: translateX(110%);          /* 110% ensures fully off-screen */
  visibility: hidden;                   /* also removes from accessibility tree */
  pointer-events: none;
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1),
  visibility 0s linear 0.32s;  /* delay visibility hide until after slide-out */
  overflow-y: auto; overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}
.mobile-menu.is-open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1),
  visibility 0s linear 0s;   /* immediately visible on open */
}

/* Screen-reader focus trap: hide focusable elements when closed */
.mobile-menu[aria-hidden="true"] a,
.mobile-menu[aria-hidden="true"] button { tabindex: -1; }

.mobile-overlay {
  position: fixed; inset: 0;
  background: rgba(5, 12, 30, 0.75);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 999;
  opacity: 0; pointer-events: none;
  transition: opacity 0.32s ease;
}
.mobile-overlay.is-open { opacity: 1; pointer-events: auto; }

/* Header row inside panel */
.mobile-menu-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--navy-mid); z-index: 2;
  flex-shrink: 0;
}
.mobile-menu-header .site-logo { text-decoration: none; color: var(--white); }
.mobile-menu-header .logo-text { font-size: 17px; }

.mobile-close {
  width: 38px; height: 38px; flex-shrink: 0;
  background: none; border: 1px solid rgba(255,255,255,0.15);
  border-radius: 3px; cursor: pointer; color: var(--text-light);
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, color 0.2s;
}
.mobile-close:hover { border-color: var(--electric); color: var(--electric); }

/* Nav list */
.mobile-menu-body { flex: 1; }
.mobile-nav-list { list-style: none; margin: 0; padding: 0; }
.mobile-nav-list > li { border-bottom: 1px solid var(--border); }

/* Top-level link row — flex so toggle button sits inline */
.mobile-nav-list > li > .mobile-link-row {
  display: flex; align-items: stretch;
}
.mobile-nav-list > li > .mobile-link-row > a {
  flex: 1; display: block;
  padding: 16px 20px;
  font-family: 'Barlow Condensed', sans-serif; font-weight: 600;
  font-size: 17px; letter-spacing: 1px; text-transform: uppercase;
  color: var(--white); text-decoration: none;
  transition: color 0.2s, background 0.2s;
}
.mobile-nav-list > li > .mobile-link-row > a:hover,
.mobile-nav-list > li.current-menu-item > .mobile-link-row > a { color: var(--electric); }

/* Fallback: if JS hasn't wrapped in .mobile-link-row */
.mobile-nav-list > li > a {
  display: block; padding: 16px 20px;
  font-family: 'Barlow Condensed', sans-serif; font-weight: 600;
  font-size: 17px; letter-spacing: 1px; text-transform: uppercase;
  color: var(--white); text-decoration: none;
}

/* Accordion toggle button */
.mobile-drop-toggle {
  width: 52px; flex-shrink: 0;
  background: none; border: none; border-left: 1px solid var(--border);
  cursor: pointer; color: var(--text-light);
  display: flex; align-items: center; justify-content: center;
  transition: color 0.2s, background 0.2s;
}
.mobile-drop-toggle:hover { color: var(--electric); background: rgba(0,180,216,0.06); }
.mobile-drop-toggle svg { transition: transform 0.25s ease; }
.mobile-drop-toggle.is-open { color: var(--electric); }
.mobile-drop-toggle.is-open svg { transform: rotate(180deg); }

/* Sub-menu */
.mobile-nav-list .sub-menu {
  display: none; list-style: none; margin: 0; padding: 0;
  background: rgba(0,0,0,0.18);
  border-top: 1px solid var(--border);
}
.mobile-nav-list .sub-menu.is-open { display: block; }
.mobile-nav-list .sub-menu li { border-bottom: 1px solid rgba(255,255,255,0.04); }
.mobile-nav-list .sub-menu li:last-child { border-bottom: none; }
.mobile-nav-list .sub-menu a {
  display: block; padding: 13px 20px 13px 32px;
  font-family: 'Barlow Condensed', sans-serif; font-size: 15px; font-weight: 500;
  letter-spacing: 0.5px; color: var(--text-light); text-decoration: none;
  transition: color 0.2s, padding-left 0.2s;
}
.mobile-nav-list .sub-menu a:hover { color: var(--electric); padding-left: 38px; }

/* CTA block */
.mobile-menu-cta { padding: 20px; border-top: 1px solid var(--border); }

/* Footer contact */
.mobile-menu-footer {
  padding: 16px 20px 24px;
  display: flex; flex-direction: column; gap: 6px;
}
.mobile-menu-footer a {
  font-size: 13px; color: var(--text-light);
  text-decoration: none; transition: color 0.2s;
}
.mobile-menu-footer a:hover { color: var(--electric); }

/* Prevent body scroll when menu is open */
body.mobile-menu-open { overflow: hidden; }


/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .products-grid { grid-template-columns: 1fr; }
  .archive-grid { grid-template-columns: repeat(2, 1fr); }
  .sectors-grid { grid-template-columns: repeat(2, 1fr); }
  .spec-layout { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .product-hero-visual { order: -1; }
  .stat-strip-inner { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .specs-layout { grid-template-columns: 1fr; }
  .env-grid { grid-template-columns: 1fr; }
  .downloads-grid { grid-template-columns: 1fr; }
  #primary-menu { display: none; }
  .nav-toggle { display: flex; }
  .topbar .inner { flex-direction: column; gap: 6px; font-size: 12px; }
  .topbar-address { display: none; }
}
@media (max-width: 600px) {
  .sectors-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stat-strip-inner { grid-template-columns: repeat(2, 1fr); }
  .archive-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .nav-cta { display: none; } /* CTA moved into mobile menu panel */
  .nav-toggle {
    display: flex;
  }
}