/* ============================================
   Hynhe Cryogenics - Global Styles
   ============================================ */

/* CSS Variables */
:root {
  --primary: #0a1628;
  --primary-light: #1a2d4a;
  --accent: #00a8e8;
  --accent-dark: #0077b6;
  --gold: #c9a227;
  --text: #1f2937;
  --text-light: #6b7280;
  --text-white: #ffffff;
  --bg: #f8fafc;
  --bg-dark: #0f172a;
  --card-bg: #ffffff;
  --border: #e5e7eb;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --radius: 10px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: all 0.3s ease;
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(10,22,40,0.95);
  backdrop-filter: blur(20px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.02em;
}
.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
}
.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav a {
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  border-radius: 6px;
  transition: var(--transition);
  white-space: nowrap;
}
.nav a:hover {
  color: var(--text-white);
  background: rgba(255,255,255,0.08);
}
.nav a.active {
  color: var(--accent);
  background: rgba(0,168,232,0.1);
}
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 40%, var(--accent-dark) 100%);
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-height) + 40px) 24px 60px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,168,232,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.hero p {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: rgba(255,255,255,0.75);
  max-width: 600px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0,168,232,0.2);
  border: 1px solid rgba(0,168,232,0.3);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

/* ============================================
   Section
   ============================================ */
.section {
  padding: 80px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}
.section-header p {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================
   Cards
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.card p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.65;
}

/* ============================================
   News Card
   ============================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.news-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  cursor: pointer;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.news-card-img {
  height: 180px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.news-card-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(0,168,232,0.2), transparent 60%);
}
.news-card-img .news-category {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  background: rgba(0,168,232,0.9);
  color: #fff;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.news-card-img .news-date {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9);
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
}
.news-card-img h4 {
  position: relative;
  z-index: 1;
  color: var(--text-white);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0 20px;
  text-align: center;
  line-height: 1.4;
}
.news-card-body {
  padding: 24px;
}
.news-card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  line-height: 1.4;
}
.news-card-body p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* Filter tabs */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
}
.filter-tab {
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-light);
  background: var(--card-bg);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.filter-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.filter-tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ============================================
   Timeline
   ============================================ */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-dark));
}
.timeline-item {
  display: flex;
  justify-content: flex-end;
  padding-right: 50%;
  position: relative;
  margin-bottom: 40px;
}
.timeline-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: 50%;
}
.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 18px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--card-bg);
  box-shadow: 0 0 0 3px var(--accent);
  z-index: 2;
}
.timeline-content {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  max-width: 380px;
  margin-right: 32px;
  transition: var(--transition);
}
.timeline-item:nth-child(even) .timeline-content {
  margin-right: 0;
  margin-left: 32px;
}
.timeline-content:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.timeline-year {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}
.timeline-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}
.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ============================================
   Product Detail
   ============================================ */
.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.product-visual {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-lg);
  padding: 48px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(0,168,232,0.2), transparent 60%);
}
.product-visual h2 {
  position: relative;
  z-index: 1;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-white);
  text-align: center;
}
.product-visual .product-category {
  position: relative;
  z-index: 1;
  margin-top: 12px;
  padding: 6px 18px;
  background: rgba(0,168,232,0.2);
  border: 1px solid rgba(0,168,232,0.3);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
}
.product-info h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}
.product-info p {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 24px;
}
.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.spec-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg);
  border-radius: 8px;
  font-size: 0.85rem;
}
.spec-item .spec-label {
  color: var(--text-light);
  font-weight: 500;
}
.spec-item .spec-value {
  color: var(--primary);
  font-weight: 600;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.tag {
  padding: 6px 14px;
  background: rgba(0,168,232,0.08);
  border: 1px solid rgba(0,168,232,0.15);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent-dark);
}
.features-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text);
}
.feature-item::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: 8px;
  flex-shrink: 0;
}
.related-products {
  margin-top: 64px;
}
.related-products h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
  text-align: center;
}

/* ============================================
   Contact
   ============================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}
.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  margin-bottom: 16px;
  transition: var(--transition);
}
.contact-card:hover {
  box-shadow: var(--shadow);
  transform: translateX(4px);
}
.contact-card-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-card h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.contact-card p {
  font-size: 0.95rem;
  color: var(--primary);
  font-weight: 600;
}
.contact-card a {
  font-size: 0.95rem;
  color: var(--accent-dark);
  font-weight: 600;
}
.social-links {
  margin-top: 32px;
}
.social-links h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}
.social-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
  cursor: pointer;
}
.social-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* Contact form */
.contact-form-wrapper {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
}
.contact-form-wrapper h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,168,232,0.1);
}
.form-group textarea {
  min-height: 140px;
  resize: vertical;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,168,232,0.3);
}
.btn-full { width: 100%; }

/* ============================================
   Article / News Detail
   ============================================ */
.article-container {
  max-width: 800px;
  margin: 0 auto;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.article-category {
  padding: 6px 16px;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
}
.article-date {
  font-size: 0.9rem;
  color: var(--text-light);
}
.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text);
}
.article-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin: 32px 0 16px;
}
.article-body p {
  margin-bottom: 20px;
}
.article-body ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 20px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.cta-section p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: 2px solid rgba(255,255,255,0.3);
  color: var(--text-white);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
  z-index: 1;
}
.btn-outline:hover {
  background: var(--text-white);
  color: var(--primary);
  border-color: var(--text-white);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.6);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}
.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
}
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 12px rgba(0,168,232,0.3);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  transform: translateY(-3px);
  background: var(--accent-dark);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate {
  animation: fadeInUp 0.6s ease forwards;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .nav { display: none; }
  .mobile-toggle { display: flex; }
  .product-layout,
  .contact-layout { grid-template-columns: 1fr; }
  .timeline::before { left: 20px; }
  .timeline-item,
  .timeline-item:nth-child(even) {
    padding-left: 56px;
    padding-right: 0;
    justify-content: flex-start;
  }
  .timeline-dot { left: 20px; transform: translateX(-50%); }
  .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    margin-left: 0;
    margin-right: 0;
    max-width: 100%;
  }
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .card-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .specs-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .hero { min-height: 35vh; padding-top: calc(var(--header-height) + 30px); }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .contact-form-wrapper { padding: 24px; }
}

/* Mobile nav open */
.nav.open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: rgba(10,22,40,0.98);
  padding: 16px;
  gap: 4px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav.open a { width: 100%; }