/* =============================================
   Béton Access — style.css v=1
   Industrial concrete design system
   ============================================= */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary:   #2d2d2d;
  --color-accent:    #ea580c;
  --color-accent-dk: #c2410c;
  --color-bg-light:  #e5e5e0;
  --color-bg-white:  #f7f7f5;
  --color-text:      #1a1a1a;
  --color-text-muted:#5a5a5a;
  --color-border:    #d0d0cb;
  --color-dark-sec:  #3a3a3a;
  --font-sans: 'Inter', 'Segoe UI', Arial, sans-serif;
  --radius: 3px;
  --shadow: 0 2px 12px rgba(0,0,0,0.13);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.18);
  --transition: 0.22s ease;
  --max-w: 1200px;
  --max-w-text: 820px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg-white);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-dk); }
ul { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

/* --- Layout Utilities --- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.container--text { max-width: var(--max-w-text); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.section--dark { background: var(--color-primary); color: #e0e0dc; }
.section--dark h2, .section--dark h3, .section--dark h4 { color: #f0f0ec; }
.section--gray { background: var(--color-bg-light); }
.section--white { background: var(--color-bg-white); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2.5rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-dk);
  border-color: var(--color-accent-dk);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(234,88,12,0.35);
}
.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-1px);
}
.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.7);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
  color: #fff;
}
.btn-lg { padding: 1.1rem 2.6rem; font-size: 1.05rem; }

/* =============================================
   HEADER / NAV
   ============================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(30,30,30,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--color-accent);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.3); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav-logo img { height: 46px; width: auto; }
.nav-logo { display: flex; align-items: center; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}
.nav-menu a {
  color: #e0e0dc;
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--color-accent);
  background: rgba(234,88,12,0.1);
}
.nav-cta {
  background: var(--color-accent) !important;
  color: #fff !important;
  padding: 0.55rem 1.2rem !important;
  border-radius: var(--radius) !important;
}
.nav-cta:hover {
  background: var(--color-accent-dk) !important;
  color: #fff !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: #e0e0dc;
  border-radius: 2px;
  transition: all var(--transition);
}

/* =============================================
   HERO — VIDEO
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(30,30,30,0.88) 0%, rgba(50,50,50,0.45) 50%, rgba(30,30,30,0.92) 100%);
  z-index: 1;
}
.hero-video { background-color: #1e1e1e; }
.hero-video-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 0;
  opacity: 0.45;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  padding-top: 72px;
  width: 100%;
}
.hero-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 0.35rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}
.hero h1 {
  color: #fff;
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  max-width: 780px;
}
.hero h1 span { color: var(--color-accent); }
.hero p.hero-sub {
  color: rgba(255,255,255,0.85);
  font-size: clamp(1rem, 2vw, 1.2rem);
  max-width: 580px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 4rem;
  flex-wrap: wrap;
}
.hero-stat { color: rgba(255,255,255,0.9); }
.hero-stat strong {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}
.hero-stat span { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; opacity: 0.8; }

.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255,255,255,0.6);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  animation: bounce 2s infinite;
}
.scroll-indicator::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* =============================================
   TRUST BAR
   ============================================= */
.trust-bar {
  background: var(--color-primary);
  border-top: 1px solid #3a3a3a;
  border-bottom: 3px solid var(--color-accent);
  padding: 1.5rem 0;
}
.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: #c0c0bc;
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.trust-item svg { color: var(--color-accent); flex-shrink: 0; }

/* =============================================
   PRODUCTS GRID
   ============================================= */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}
.product-card-img {
  aspect-ratio: 4/3;
  background: var(--color-bg-light);
  overflow: hidden;
}
.product-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.product-card:hover .product-card-img img { transform: scale(1.04); }
.product-card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.product-card-tag {
  display: inline-block;
  background: rgba(234,88,12,0.1);
  color: var(--color-accent);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
}
.product-card h3 { font-size: 1.15rem; margin-bottom: 0.6rem; }
.product-card p { font-size: 0.9rem; color: var(--color-text-muted); margin-bottom: 1rem; flex: 1; }
.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: auto;
}
.product-card-link svg { transition: transform var(--transition); }
.product-card:hover .product-card-link svg { transform: translateX(4px); }

/* =============================================
   2-COL CONTENT BLOCKS
   ============================================= */
.content-block-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.content-block-img img { width: 100%; height: 100%; object-fit: cover; }

.content-block-text { padding: 1.5rem 0; }
.content-block-text h2 { margin-bottom: 1.2rem; }
.content-block-text p { color: var(--color-text-muted); margin-bottom: 1rem; }
.content-block-text ul { margin: 1.2rem 0; display: flex; flex-direction: column; gap: 0.6rem; }
.content-block-text ul li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}
.content-block-text ul li::before {
  content: '';
  display: block;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-top: 0.45rem;
  flex-shrink: 0;
}

/* =============================================
   BANNER (aerial factory)
   ============================================= */
.banner-aerial {
  position: relative;
  background-image: url('/images/usine-aerienne.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding: 7rem 0;
  overflow: hidden;
}
.banner-aerial::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(20,20,20,0.88), rgba(45,45,45,0.72));
}
.banner-aerial .container { position: relative; z-index: 1; }
.banner-aerial h2 { color: #fff; margin-bottom: 1.2rem; }
.banner-aerial p { color: rgba(255,255,255,0.82); max-width: 620px; margin-bottom: 2rem; font-size: 1.05rem; }

/* =============================================
   BLOG / EXPERTISE
   ============================================= */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.blog-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.blog-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg-light);
}
.blog-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.blog-card:hover .blog-card-img img { transform: scale(1.04); }
.blog-card-body { padding: 1.4rem; flex: 1; display: flex; flex-direction: column; }
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}
.blog-card-cat {
  background: rgba(234,88,12,0.1);
  color: var(--color-accent);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius);
}
.blog-card-date { font-size: 0.8rem; color: var(--color-text-muted); }
.blog-card h3 { font-size: 1.05rem; margin-bottom: 0.6rem; }
.blog-card h3 a { color: var(--color-primary); }
.blog-card h3 a:hover { color: var(--color-accent); }
.blog-card p { font-size: 0.88rem; color: var(--color-text-muted); flex: 1; margin-bottom: 1rem; }
.blog-card-link {
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: auto;
}

/* =============================================
   BLOG ARTICLE
   ============================================= */
.article-hero {
  padding-top: 72px;
  background: var(--color-primary);
}
.article-hero-img {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  display: block;
}
.article-header {
  background: var(--color-primary);
  padding: 3rem 0 2.5rem;
}
.article-header .section-label { color: var(--color-accent); }
.article-header h1 { color: #fff; font-size: clamp(1.7rem, 4vw, 2.6rem); max-width: 820px; }
.article-meta {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-top: 1rem;
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  flex-wrap: wrap;
}
.article-meta span { display: flex; align-items: center; gap: 0.3rem; }

.article-body {
  padding: 4rem 0;
  background: var(--color-bg-white);
}
.article-body h2 { margin: 2.5rem 0 1rem; color: var(--color-primary); font-size: 1.6rem; }
.article-body h3 { margin: 2rem 0 0.8rem; color: var(--color-primary); font-size: 1.2rem; }
.article-body p { color: #3a3a3a; line-height: 1.75; margin-bottom: 1.2rem; }
.article-body ul, .article-body ol { margin: 1rem 0 1.5rem 1.5rem; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { color: #3a3a3a; margin-bottom: 0.5rem; line-height: 1.7; }
.article-body strong { color: var(--color-primary); }
.article-body blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--color-bg-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: #444;
}
.article-body .article-img-mid {
  width: 100%;
  border-radius: var(--radius);
  margin: 2.5rem 0;
  box-shadow: var(--shadow);
}
.article-cta-box {
  background: var(--color-primary);
  color: #fff;
  padding: 2rem 2.5rem;
  border-radius: var(--radius);
  margin: 3rem 0;
  border-left: 5px solid var(--color-accent);
}
.article-cta-box h3 { color: #fff; margin-bottom: 0.6rem; }
.article-cta-box p { color: rgba(255,255,255,0.8); margin-bottom: 1.2rem; }

/* Blog listing page */
.expertise-hero {
  padding: 8rem 0 5rem;
  background: var(--color-primary);
  margin-top: 72px;
}
.expertise-hero h1 { color: #fff; }
.expertise-hero p { color: rgba(255,255,255,0.75); max-width: 560px; margin-top: 1rem; font-size: 1.05rem; }

/* =============================================
   FEATURES / ICONS SECTION
   ============================================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.feature-item {
  text-align: center;
  padding: 2rem 1.2rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.feature-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--color-accent);
}
.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(234,88,12,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.2rem;
  color: var(--color-accent);
}
.feature-item h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.feature-item p { font-size: 0.88rem; color: var(--color-text-muted); margin: 0; }

/* =============================================
   CTA SECTION — 2-col with image
   ============================================= */
.cta-section { background: var(--color-bg-light); }
.cta-content h2 { margin-bottom: 1rem; }
.cta-content p { color: var(--color-text-muted); margin-bottom: 2rem; font-size: 1.05rem; }
.cta-content .btn { margin-right: 1rem; margin-bottom: 0.5rem; }
.cta-img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}
.cta-img-wrap img { width: 100%; height: 100%; object-fit: cover; }

/* =============================================
   CONTACT FORM
   ============================================= */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.7fr;
  gap: 4rem;
  align-items: start;
}
.contact-info h2 { margin-bottom: 1rem; }
.contact-info p { color: var(--color-text-muted); margin-bottom: 1.5rem; }
.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1.2rem;
  color: var(--color-text-muted);
  font-size: 0.93rem;
}
.contact-detail svg { color: var(--color-accent); margin-top: 2px; flex-shrink: 0; }
.contact-detail strong { display: block; color: var(--color-primary); margin-bottom: 0.2rem; }

.contact-form { background: #fff; padding: 2.5rem; border: 1px solid var(--color-border); border-radius: var(--radius); box-shadow: var(--shadow); }
.contact-form h3 { margin-bottom: 1.5rem; font-size: 1.3rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.05em; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(234,88,12,0.12);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 0.82rem; color: var(--color-text-muted); margin-top: 0.8rem; }

/* =============================================
   PAGE HEROES (non-video)
   ============================================= */
.page-hero {
  padding: 7rem 0 4rem;
  background: var(--color-primary);
  margin-top: 72px;
}
.page-hero h1 { color: #fff; }
.page-hero p { color: rgba(255,255,255,0.75); max-width: 640px; margin-top: 1rem; font-size: 1.05rem; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { color: rgba(255,255,255,0.35); }

/* =============================================
   PRODUCTS PAGE — detailed list
   ============================================= */
.product-detail-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 0;
  box-shadow: var(--shadow);
  margin-bottom: 2.5rem;
  transition: box-shadow var(--transition);
}
.product-detail-card:hover { box-shadow: var(--shadow-lg); }
.product-detail-img { background: var(--color-bg-light); }
.product-detail-img img { width: 100%; height: 100%; object-fit: cover; min-height: 260px; }
.product-detail-content { padding: 2.5rem; display: flex; flex-direction: column; justify-content: center; }
.product-detail-content .section-label { margin-bottom: 0.5rem; }
.product-detail-content h2 { font-size: 1.7rem; margin-bottom: 1rem; }
.product-detail-content p { color: var(--color-text-muted); margin-bottom: 1rem; }
.specs-list { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1rem 0; }
.spec-badge {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius);
  color: var(--color-text-muted);
}

/* =============================================
   SITEMAP
   ============================================= */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}
.sitemap-col h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}
.sitemap-col ul { display: flex; flex-direction: column; gap: 0.5rem; }
.sitemap-col ul li a { color: var(--color-text-muted); font-size: 0.93rem; }
.sitemap-col ul li a:hover { color: var(--color-accent); }

/* =============================================
   404
   ============================================= */
.error-page {
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--color-primary);
  margin-top: 72px;
  padding: 4rem 1.5rem;
}
.error-inner { max-width: 520px; }
.error-page h1 { font-size: clamp(5rem, 15vw, 10rem); color: var(--color-accent); line-height: 1; }
.error-page h2 { color: #fff; font-size: 2rem; margin: 1rem 0; }
.error-page p { color: rgba(255,255,255,0.7); max-width: 480px; margin: 0 auto 2rem; }

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  background: #1a1a1a;
  color: #c0c0bc;
  padding: 4rem 0 0;
  border-top: 3px solid var(--color-accent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand img { height: 42px; margin-bottom: 1.2rem; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; color: #888; max-width: 280px; }
.footer-col h4 {
  color: #e0e0dc;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #2d2d2d;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.55rem; }
.footer-col ul li a { color: #888; font-size: 0.88rem; transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid #2d2d2d;
  padding: 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p { font-size: 0.82rem; color: #555; }
.footer-bottom a { color: #666; font-size: 0.82rem; }
.footer-bottom a:hover { color: var(--color-accent); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .grid-4, .features-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail-card { grid-template-columns: 1fr; }
  .product-detail-img img { min-height: 220px; max-height: 280px; }
}

@media (max-width: 768px) {
  .section { padding: 3.5rem 0; }
  .grid-2 { grid-template-columns: 1fr; gap: 2rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .sitemap-grid { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; gap: 2.5rem; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .trust-bar-inner { gap: 1.5rem; justify-content: flex-start; }
  .hero-stats { gap: 1.5rem; }
  .nav-menu { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: rgba(25,25,25,0.98); padding: 1.5rem; gap: 0.3rem; border-bottom: 2px solid var(--color-accent); }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 0.7rem 1rem; font-size: 0.9rem; }
  .nav-toggle { display: flex; }
  .nav-cta-mob { display: none; }
  .banner-aerial { background-attachment: scroll; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { text-align: center; justify-content: center; }
}

/* =============================================
   SCROLL ANIMATIONS
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}