/* ============================================
   OP SELECT SITE — PREMIUM DARK/GOLD THEME
   ============================================ */

/* --- CSS VARIABLES (TEMPLATE CONFIG) --- */
:root {
  /* Primary palette */
  --black: #0a0a0a;
  --dark: #111111;
  --dark-surface: #1a1a1a;
  --dark-card: #1e1e1e;
  --dark-border: #2a2a2a;
  --dark-hover: #252525;

  /* Gold accents */
  --gold: #c9a84c;
  --gold-light: #d4b86a;
  --gold-dark: #a8873a;
  --gold-glow: rgba(201, 168, 76, 0.15);
  --gold-glow-strong: rgba(201, 168, 76, 0.3);

  /* Teal accent (OP X / X-Lite branding) */
  --teal: #5dd9c1;
  --teal-glow: rgba(93, 217, 193, 0.15);

  /* Text */
  --white: #ffffff;
  --text-primary: #f0f0f0;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;

  /* Fonts */
  --font-heading: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --section-padding: 100px 0;
  --container-width: 1200px;
  --nav-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--black);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
}

.gold-text {
  color: var(--gold);
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  padding: 6px 16px;
  border: 1px solid var(--gold);
  border-radius: 2px;
}

.section-heading {
  margin-bottom: 20px;
}

.section-subtext {
  max-width: 640px;
  margin: 0 auto 48px;
  font-size: 1.1rem;
}

/* --- NAVIGATION --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--dark-border);
  transition: all 0.3s ease;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}

.nav-logo-text span {
  color: var(--gold);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--gold);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px;
  background: var(--gold);
  color: var(--black) !important;
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.8rem !important;
  letter-spacing: 0.1em;
  transition: all 0.3s ease !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--gold-light) !important;
  color: var(--black) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--gold-glow-strong);
}

/* Mobile menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s ease;
  display: block;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 3px;
}

.btn-primary {
  background: var(--gold);
  color: var(--black);
}

.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--gold-glow-strong);
}

.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
}

.btn-outline:hover {
  background: var(--gold);
  color: var(--black);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--white);
  color: var(--black);
}

.btn-white:hover {
  background: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255,255,255,0.1);
}

/* --- HERO SECTION --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    var(--black) 0%,
    rgba(10,10,10,0.6) 40%,
    rgba(10,10,10,0.85) 70%,
    var(--black) 100%
  );
  z-index: 1;
}

.hero-bg-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  filter: saturate(0.3);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--gold-glow);
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  margin-bottom: 24px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--dark-border);
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 8px;
}

.hero-stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* --- SECTIONS --- */
section {
  padding: var(--section-padding);
}

.section-dark {
  background: var(--dark);
}

.section-darker {
  background: var(--dark-surface);
}

.text-center {
  text-align: center;
}

/* --- FEATURE GRID --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.feature-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 6px;
  padding: 40px 32px;
  transition: all 0.4s ease;
}

.feature-card:hover {
  border-color: rgba(201, 168, 76, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gold-glow);
  border-radius: 6px;
  margin-bottom: 24px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  color: var(--gold);
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-card h3 {
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* --- PRODUCT CARDS --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

.product-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.4s ease;
  position: relative;
}

.product-card:hover {
  border-color: var(--gold);
  box-shadow: 0 0 40px var(--gold-glow);
  transform: translateY(-4px);
}

.product-card.featured {
  border-color: var(--gold);
}

.product-card.featured::before {
  content: 'FLAGSHIP';
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--gold);
  color: var(--black);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  padding: 4px 12px;
  border-radius: 2px;
  z-index: 2;
}

.product-image {
  height: 260px;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 24px;
  transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-card.featured .product-image {
  background: radial-gradient(ellipse at center, rgba(201,168,76,0.08) 0%, #000 70%);
}

.product-image-placeholder {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.product-body {
  padding: 32px;
}

.product-tier {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}

.product-card h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.product-card p {
  font-size: 0.92rem;
  margin-bottom: 24px;
}

.product-features {
  list-style: none;
  margin-bottom: 28px;
}

.product-features li {
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.product-features li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  flex-shrink: 0;
}

.product-warranty {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px;
  background: var(--gold-glow);
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--gold);
  font-weight: 600;
}

/* --- GALLERY --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 60px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--dark-card);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--dark-border);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.8) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-overlay span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--white);
}

.gallery-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: var(--dark-card);
}

/* --- TESTIMONIALS --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 60px;
}

.testimonial-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 8px;
  padding: 36px;
  position: relative;
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.testimonial-stars svg {
  width: 16px;
  height: 16px;
  fill: var(--gold);
}

.testimonial-card blockquote {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  background: var(--dark-surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gold);
  border: 1px solid var(--dark-border);
}

.testimonial-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
}

.testimonial-vehicle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- CONTACT FORM --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 60px;
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.contact-info p {
  margin-bottom: 32px;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--dark-border);
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gold-glow);
  border-radius: 6px;
  flex-shrink: 0;
}

.contact-detail-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-detail-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact-detail-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-form {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 8px;
  padding: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: 4px;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.3s ease;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-glow);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* --- CERTIFICATION BADGES --- */
.certifications {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 60px;
}

.cert-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 32px;
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.cert-badge:hover {
  border-color: var(--gold);
  box-shadow: 0 0 30px var(--gold-glow);
}

.cert-badge-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gold-glow);
  border-radius: 50%;
}

.cert-badge-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.cert-badge-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: center;
}

/* --- FOOTER --- */
.footer {
  padding: 60px 0 30px;
  background: var(--dark);
  border-top: 1px solid var(--dark-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-col ul li a:hover {
  color: var(--gold);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom-links a:hover {
  color: var(--gold);
}

/* --- DIVIDER LINE (gold) --- */
.gold-line {
  width: 60px;
  height: 2px;
  background: var(--gold);
  margin: 20px auto 0;
}

/* --- CTA BANNER --- */
.cta-banner {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--dark-surface) 0%, var(--dark) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 200%;
  background: radial-gradient(ellipse, var(--gold-glow) 0%, transparent 60%);
  pointer-events: none;
}

.cta-banner .container {
  position: relative;
  z-index: 1;
}

.cta-banner h2 {
  margin-bottom: 16px;
}

.cta-banner p {
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* --- ABOUT / WHY SECTION --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 60px;
}

.about-image {
  aspect-ratio: 4/3;
  background: var(--dark-card);
  border-radius: 8px;
  border: 1px solid var(--dark-border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image-placeholder {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.about-text h2 {
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 16px;
}

.about-highlights {
  list-style: none;
  margin: 28px 0;
}

.about-highlights li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 10px 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.about-highlights li svg {
  width: 20px;
  height: 20px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- PROCESS / STEPS --- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.process-step {
  text-align: center;
  padding: 32px 20px;
  position: relative;
}

.process-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--gold-glow);
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 50%;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 20px;
}

.process-step h4 {
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.9rem;
}

/* --- OP LOGO SVG --- */
.op-logo-svg {
  display: inline-block;
}

/* --- SCROLL ANIMATIONS --- */
/* Elements start visible, JS adds .fade-init to enable animation */
.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.fade-in.fade-init {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.fade-init.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { gap: 40px; }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px 0;
    --nav-height: 64px;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--black);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    z-index: 999;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero { min-height: 90vh; padding: 100px 24px 60px; }
  .hero-stats { flex-direction: column; gap: 24px; }

  .features-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .hero-buttons { flex-direction: column; align-items: center; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .certifications { gap: 16px; }
}

@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
}