*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #09090b;
  --bg-elevated: #111113;
  --bg-card: #16161a;
  --bg-card-hover: #1c1c21;
  --primary: #dc2626;
  --primary-hover: #b91c1c;
  --primary-glow: rgba(220,38,38,0.15);
  --accent: #f87171;
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-dim: #52525b;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --max-width: 1080px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #fca5a5; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ═══ NAV ═══ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 56px; display: flex; align-items: center;
  background: rgba(9,9,11,0.7);
  backdrop-filter: blur(20px) saturate(1.4); -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s ease;
}
.nav-inner { max-width: var(--max-width); margin: 0 auto; width: 100%; display: flex; align-items: center; padding: 0 20px; }
.nav-logo { font-size: 1rem; font-weight: 800; color: var(--text); letter-spacing: 2px; text-transform: uppercase; }
.nav-logo span { color: var(--primary); }
.nav-links { display: flex; gap: 28px; margin-left: auto; list-style: none; }
.nav-links a { color: var(--text-secondary); font-size: 0.75rem; font-weight: 500; letter-spacing: 0.5px; text-transform: uppercase; transition: color var(--transition); }
.nav-links a:hover { color: var(--text); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; margin-left: auto; padding: 8px; }
.nav-toggle span { display: block; width: 18px; height: 1.5px; background: var(--text); transition: transform var(--transition), opacity var(--transition); }
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ═══ HERO ═══ */
.hero {
  min-height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center;
  padding: 100px 24px 60px; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -40%; left: 30%; transform: translateX(-50%);
  width: 900px; height: 900px; border-radius: 50%;
  background: radial-gradient(circle, rgba(220,38,38,0.22) 0%, transparent 70%);
  pointer-events: none; opacity: 0.65;
}
.hero::after {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0;
}
.hero-particles {
  position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none;
}
.hero-content {
  display: flex; align-items: center; gap: 48px;
  max-width: var(--max-width); width: 100%; position: relative; z-index: 1;
}
.hero-text { flex: 1; }
.hero-badge {
  display: inline-block; font-size: 0.65rem; font-weight: 600;
  color: var(--accent); background: rgba(220,38,38,0.08);
  border: 1px solid rgba(220,38,38,0.15); padding: 5px 14px;
  border-radius: 20px; margin-bottom: 20px; letter-spacing: 0.5px;
  text-transform: uppercase;
}
.hero-image {
  flex: 0 0 340px; position: relative;
}
.hero-image img {
  width: 100%; border-radius: var(--radius-xl); border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 80px var(--primary-glow);
  animation: float 6s ease-in-out infinite;
}
.hero-image::before {
  content: ''; position: absolute; inset: -1px; border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(220,38,38,0.2), transparent 50%);
  z-index: 1; pointer-events: none;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 900; margin-bottom: 18px;
  letter-spacing: -1.5px; line-height: 1.1;
}
.hero h1 span { color: #facc15; }
.hero .tagline {
  color: var(--text-secondary); font-size: 1rem; max-width: 460px;
  margin-bottom: 32px; line-height: 1.7;
}
.hero-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 32px; margin-top: 48px; position: relative; z-index: 1;
  padding: 16px 28px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  max-width: var(--max-width); width: 100%;
  justify-content: center;
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 1.4rem; font-weight: 800; color: var(--primary); }
.hero-stat .label { font-size: 0.6rem; color: var(--text-dim); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }

/* ═══ BUTTONS ═══ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 24px; border-radius: var(--radius);
  font-size: 0.8rem; font-weight: 600; cursor: pointer;
  border: 1.5px solid transparent; transition: all var(--transition);
  font-family: var(--font); letter-spacing: 0.3px;
}
.btn svg { transition: transform var(--transition); }
.btn:hover svg { transform: translateX(3px); }
.btn-primary {
  background: var(--primary); color: #fff; border-color: var(--primary);
  box-shadow: 0 4px 16px var(--primary-glow);
}
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(220,38,38,0.25); }
.btn-outline { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-outline:hover { border-color: var(--border-hover); color: var(--text); background: var(--bg-card); }

/* ═══ SECTIONS ═══ */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 44px; }
.section-header h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); font-weight: 700; margin-bottom: 6px; letter-spacing: -0.3px; }
.section-header p { color: var(--text-secondary); font-size: 0.85rem; }
.section-alt { background: var(--bg-elevated); }
.section-divider { width: 40px; height: 3px; background: var(--primary); border-radius: 2px; margin: 0 auto 20px; }

/* ═══ SERVICES ═══ */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.service-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 24px 20px; transition: all var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0; transition: opacity var(--transition);
}
.service-card:hover { border-color: var(--border-hover); transform: translateY(-2px); background: var(--bg-card-hover); }
.service-card:hover::before { opacity: 1; }
.service-icon {
  font-size: 1.3rem; margin-bottom: 12px; width: 40px; height: 40px; border-radius: 10px;
  background: rgba(220,38,38,0.06); display: flex; align-items: center; justify-content: center;
  color: var(--accent); transition: all var(--transition);
}
.service-card:hover .service-icon { background: rgba(220,38,38,0.12); transform: scale(1.05); }
.service-card h3 { font-size: 0.85rem; font-weight: 700; margin-bottom: 6px; }
.service-card p { color: var(--text-secondary); font-size: 0.75rem; line-height: 1.65; }

/* ═══ PROCESS ═══ */
.process-grid {
  display: flex; align-items: flex-start; justify-content: center; gap: 0;
}
.process-step {
  flex: 0 1 220px; text-align: center; position: relative;
  padding: 24px 16px; border-radius: var(--radius-lg);
  background: var(--bg-card); border: 1px solid var(--border);
  transition: all var(--transition);
}
.process-step:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.process-num {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: #fff; font-size: 0.6rem; font-weight: 800;
  padding: 3px 10px; border-radius: 20px; letter-spacing: 1px;
}
.process-icon {
  width: 52px; height: 52px; border-radius: 50%; margin: 12px auto 14px;
  background: rgba(220,38,38,0.06); display: flex; align-items: center; justify-content: center;
  color: var(--accent);
}
.process-step h3 { font-size: 0.82rem; font-weight: 700; margin-bottom: 6px; }
.process-step p { font-size: 0.72rem; color: var(--text-secondary); line-height: 1.6; }
.process-connector {
  display: flex; align-items: center; justify-content: center;
  flex: 0 0 48px; padding-top: 50px; color: var(--text-dim);
}

/* ═══ GALLERY ═══ */
.gallery-filter {
  display: flex; justify-content: center; gap: 8px; margin-bottom: 24px;
}
.filter-btn {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px;
  padding: 6px 16px; color: var(--text-secondary); font-size: 0.72rem; font-weight: 600;
  font-family: var(--font); cursor: pointer; transition: all var(--transition);
  letter-spacing: 0.3px;
}
.filter-btn:hover { border-color: var(--border-hover); color: var(--text); }
.filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.gallery-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.gallery-item {
  border-radius: var(--radius); overflow: hidden; cursor: pointer;
  aspect-ratio: 1; background: var(--bg-card); border: 1px solid var(--border);
  transition: all var(--transition); position: relative;
}
.gallery-item:hover { transform: scale(1.02); border-color: var(--border-hover); }
.gallery-item:hover .caption { opacity: 1; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.gallery-item:hover img { transform: scale(1.06); }
.gallery-item .caption {
  position: absolute; inset: 0; display: flex; align-items: flex-end;
  padding: 10px; background: linear-gradient(transparent 50%, rgba(0,0,0,0.8));
  font-size: 0.6rem; color: rgba(255,255,255,0.85); font-weight: 500;
  opacity: 0; transition: opacity var(--transition);
}

@keyframes fadeScale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ═══ MATERIALS ═══ */
.materials-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.material-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 20px; text-align: center; transition: all var(--transition); overflow: hidden;
}
.material-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.material-swatch {
  width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 14px;
  border: 2px solid rgba(255,255,255,0.08);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3), inset 0 -2px 6px rgba(0,0,0,0.2);
}
.material-card h3 { font-size: 0.82rem; font-weight: 700; margin-bottom: 6px; }
.material-card p { font-size: 0.7rem; color: var(--text-secondary); line-height: 1.6; }

/* ═══ EQUIPMENT ═══ */
.equipment { display: flex; gap: 36px; align-items: center; }
.equipment-img {
  flex: 0 0 42%; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border); position: relative;
}
.equipment-img::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(220,38,38,0.05) 0%, transparent 50%);
  pointer-events: none;
}
.equipment-info { flex: 1; }
.equipment-info h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.2px; }
.equipment-info p { color: var(--text-secondary); font-size: 0.82rem; line-height: 1.7; margin-bottom: 20px; }
.spec-list { list-style: none; }
.spec-list li {
  display: flex; justify-content: space-between; padding: 9px 0;
  border-bottom: 1px solid var(--border); font-size: 0.78rem;
}
.spec-label { color: var(--text-secondary); }
.spec-value { color: var(--text); font-weight: 600; }

/* ═══ CONTACT ═══ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 36px; }
.contact-info h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 18px; }
.contact-item { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.contact-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(220,38,38,0.06); border: 1px solid rgba(220,38,38,0.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); flex-shrink: 0;
}
.contact-text { font-size: 0.78rem; color: var(--text-secondary); }
.contact-text strong { color: var(--text); display: block; font-size: 0.82rem; margin-bottom: 2px; }
.social-links { display: flex; gap: 8px; margin-top: 20px; }
.social-links a {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); font-size: 0.75rem; transition: all var(--transition);
}
.social-links a:hover { border-color: var(--primary); color: var(--primary); background: rgba(220,38,38,0.06); }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 11px 14px; background: var(--bg);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); font-size: 0.8rem; font-family: var(--font);
  margin-bottom: 8px; transition: all var(--transition);
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(220,38,38,0.08); }
.contact-form textarea { min-height: 100px; resize: vertical; }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: var(--text-dim); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* ═══ FOOTER ═══ */
.footer { border-top: 1px solid var(--border); padding: 48px 0 24px; }
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px;
  padding-bottom: 32px; margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.footer-brand p { color: var(--text-secondary); font-size: 0.75rem; margin-top: 10px; line-height: 1.6; max-width: 280px; }
.footer-brand .nav-logo { font-size: 0.9rem; }
.footer-col h4 { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text-dim); margin-bottom: 14px; }
.footer-col a { display: block; color: var(--text-secondary); font-size: 0.75rem; margin-bottom: 8px; transition: color var(--transition); }
.footer-col a:hover { color: var(--text); }
.footer-address { color: var(--text-secondary); font-size: 0.72rem; line-height: 1.6; margin-top: 4px; }
.footer-bottom { text-align: center; }
.footer-bottom p { color: var(--text-dim); font-size: 0.6rem; letter-spacing: 0.3px; }

/* ═══ BACK TO TOP ═══ */
.back-to-top {
  position: fixed; bottom: 24px; right: 24px; z-index: 90;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-secondary); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(12px); pointer-events: none;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { border-color: var(--primary); color: var(--primary); background: var(--bg-card-hover); }

/* ═══ LIGHTBOX ═══ */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,0.96); display: none; align-items: center; justify-content: center; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.lightbox.open { display: flex; }
.lightbox img { max-width: 88vw; max-height: 85vh; border-radius: var(--radius-lg); object-fit: contain; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.lightbox-close { position: absolute; top: 16px; right: 20px; background: none; border: none; color: rgba(255,255,255,0.6); font-size: 1.6rem; cursor: pointer; z-index: 201; transition: color var(--transition); }
.lightbox-close:hover { color: #fff; }
.lightbox-nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.08); color: rgba(255,255,255,0.6); font-size: 1.2rem; padding: 12px 16px; cursor: pointer; border-radius: var(--radius); transition: all var(--transition); }
.lightbox-nav:hover { background: rgba(255,255,255,0.1); color: #fff; }
.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

/* ═══ ANIMATIONS ═══ */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 56px; left: 0; right: 0; background: rgba(9,9,11,0.97); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 20px; gap: 16px; border-bottom: 1px solid var(--border); }
  .services-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .equipment { flex-direction: column; }
  .equipment-img { flex: none; width: 100%; }
  .contact-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .hero-content { flex-direction: column; text-align: center; gap: 32px; }
  .hero-image { flex: none; width: 260px; order: -1; }
  .hero-buttons { justify-content: center; }
  .hero-badge { margin-bottom: 16px; }
  .hero-stats { gap: 20px; padding: 14px 20px; flex-wrap: wrap; }
  .hero::before { width: 500px; height: 500px; }
  .lightbox-nav { display: none; }
  .process-grid { flex-direction: column; align-items: center; gap: 12px; }
  .process-step { flex: none; width: 100%; max-width: 320px; }
  .process-connector { transform: rotate(90deg); padding-top: 0; }
  .materials-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .gallery-filter { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .services-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .materials-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .hero-logo { animation: none; }
}