:root {
  --bg: #0d0f12;
  --bg-alt: #12151a;
  --surface: #171a20;
  --border: #262b33;
  --text: #eef0f2;
  --text-dim: #9aa2ad;
  --accent: #ff6a1a;
  --accent-2: #2fb8ff;
  --radius: 10px;
  --font-head: 'Rajdhani', sans-serif;
  --font-body: 'Inter', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
}

h1, h2, h3, h4, .logo, .btn {
  font-family: var(--font-head);
  letter-spacing: 0.02em;
}

a { color: var(--accent-2); text-decoration: none; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 15, 18, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--text);
  text-transform: uppercase;
}
.logo span { color: var(--accent); }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a {
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.nav a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent);
  color: #0d0f12 !important;
  padding: 8px 18px;
  border-radius: 6px;
}
.nav-cta:hover { color: #0d0f12 !important; opacity: 0.9; }

/* Hero */
.hero {
  position: relative;
  padding: 120px 0 90px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
  mask-image: linear-gradient(to bottom, black, transparent);
}
.hero-inner { position: relative; max-width: 720px; }
.eyebrow {
  color: var(--accent);
  font-family: var(--font-head);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.9rem;
  margin-bottom: 14px;
}
.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin: 0 0 20px;
  line-height: 1.1;
}
.hero-sub {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 6px;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn-primary {
  background: var(--accent);
  color: #0d0f12;
}
.btn-primary:hover { opacity: 0.9; }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent-2); color: var(--accent-2); }

/* Sections */
.section { padding: 90px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-label {
  color: var(--accent-2);
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  margin-bottom: 8px;
}
.section-title { font-size: 2.1rem; font-weight: 700; margin: 0 0 16px; }
.section-intro { color: var(--text-dim); max-width: 640px; margin-bottom: 40px; }

.cards {
  display: grid;
  gap: 20px;
}
.services-cards { grid-template-columns: repeat(4, 1fr); }
.materials-cards { grid-template-columns: repeat(5, 1fr); }
.process-cards { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--accent-2); transform: translateY(-3px); }
.card h3 { margin: 0 0 10px; font-size: 1.15rem; }
.card p { margin: 0; color: var(--text-dim); font-size: 0.92rem; }
.card-icon {
  font-family: var(--font-head);
  color: var(--accent);
  font-weight: 700;
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.material-card h3 { display: flex; align-items: baseline; gap: 8px; }
.material-card h3 span {
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-transform: none;
}

.process-step { padding: 10px 4px; }
.process-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 50%;
  font-family: var(--font-head);
  font-weight: 700;
  margin-bottom: 14px;
}
.process-step h4 { margin: 0 0 8px; font-size: 1.05rem; }
.process-step p { margin: 0; color: var(--text-dim); font-size: 0.92rem; }

/* Order section */
.order-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
  align-items: start;
}
.contact-block { margin-top: 28px; }
.contact-block p { margin: 0 0 10px; color: var(--text-dim); }

.order-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label, .form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
input[type="text"],
input[type="tel"],
input[type="email"],
textarea,
input[type="file"] {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  width: 100%;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-2);
}
textarea { resize: vertical; }

.radio-group { display: flex; gap: 20px; }
.radio-option {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: 0.95rem;
  text-transform: none;
  font-weight: 400;
  cursor: pointer;
}
.radio-option input { accent-color: var(--accent); width: 16px; height: 16px; }

.btn-submit { width: 100%; margin-top: 6px; }

.form-status {
  min-height: 20px;
  font-size: 0.9rem;
  margin: 0;
}
.form-status.success { color: #4ade80; }
.form-status.error { color: #f87171; }

/* Carousel */
.carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}
.carousel-track {
  display: flex;
  transition: transform 0.35s ease;
}
.carousel-slide {
  flex: 0 0 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.carousel-slide img {
  width: 100%;
  max-height: 560px;
  object-fit: contain;
  background: #0a0b0d;
  display: block;
}
.carousel-caption {
  padding: 14px 20px;
  color: var(--text-dim);
  font-size: 0.92rem;
  text-align: center;
  width: 100%;
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(13, 15, 18, 0.7);
  border: 1px solid var(--border);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.carousel-btn:hover { border-color: var(--accent-2); color: var(--accent-2); }
.carousel-prev { left: 14px; }
.carousel-next { right: 14px; }
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 14px 0;
}
.carousel-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  padding: 0;
}
.carousel-dot.active { background: var(--accent); }

@media (max-width: 640px) {
  .carousel-slide img { max-height: 380px; }
  .carousel-btn { width: 34px; height: 34px; font-size: 1.1rem; }
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.footer-contacts a { color: var(--text-dim); }
.footer-contacts a:hover { color: var(--accent-2); }
.footer-legal { margin: 4px 0 0; font-size: 0.82rem; color: var(--text-dim); opacity: 0.8; }

/* Responsive */
@media (max-width: 960px) {
  .services-cards, .process-cards { grid-template-columns: repeat(2, 1fr); }
  .materials-cards { grid-template-columns: repeat(2, 1fr); }
  .order-inner { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav { gap: 14px; }
  .nav a:not(.nav-cta) { display: none; }
  .hero h1 { font-size: 2.2rem; }
  .services-cards, .process-cards, .materials-cards { grid-template-columns: 1fr; }
}