/* ─────────────────────────────────────────────────────────────────────
   main.css — 3DiSplit component & layout styles
   ─────────────────────────────────────────────────────────────────────
   Shared across all projects. Never edit for per-client theming —
   change theme.css instead (CSS custom properties only).
───────────────────────────────────────────────────────────────────── */

/* ─── Reset & Base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* ─── Layout ─────────────────────────────────────────────────────── */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-label {
  font-size: 11px; font-weight: 700; letter-spacing: .15em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px); font-weight: 800;
  line-height: 1.15; letter-spacing: -.02em;
}
.section-sub { font-size: 17px; color: var(--muted); margin-top: 14px; max-width: 520px; }
.divider { height: 1px; background: var(--border); }

/* ─── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; letter-spacing: .01em;
  cursor: pointer; border: none; transition: all .2s ease; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { filter: brightness(1.1); box-shadow: 0 0 0 4px var(--accent-glow); }
.btn-outline { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 17px 36px; font-size: 15px; }
.btn-sm { padding: 10px 20px; font-size: 13px; }

/* ─── Nav ────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg); border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  transition: background var(--transition);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; height: 68px;
}
.nav-logo { font-size: 20px; font-weight: 800; letter-spacing: -.03em; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--muted);
  padding: 8px 14px; border-radius: 6px; transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-right { display: flex; align-items: center; gap: 10px; }

/* Language switcher */
.lang-switcher { display: flex; align-items: center; gap: 2px; }
.lang-btn {
  background: none; border: 1.5px solid transparent; border-radius: 6px;
  color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .06em;
  padding: 5px 9px; cursor: pointer; transition: all .2s; font-family: inherit;
}
.lang-btn:hover { color: var(--text); }
.lang-btn.active { color: var(--text); border-color: var(--border); background: var(--surface-2); }
.lang-sep { font-size: 11px; color: var(--border); }

/* Theme toggle */
.theme-toggle {
  width: 40px; height: 40px; border-radius: 8px;
  border: 1.5px solid var(--border); background: transparent;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  color: var(--muted); transition: all .2s;
}
.theme-toggle:hover { color: var(--text); border-color: var(--accent); }
.icon-sun, .icon-moon { width: 18px; height: 18px; }
[data-theme="dark"]  .icon-sun  { display: block; }
[data-theme="dark"]  .icon-moon { display: none;  }
[data-theme="light"] .icon-sun  { display: none;  }
[data-theme="light"] .icon-moon { display: block; }
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 8px; border: none; background: none;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px; transition: all .3s;
}

/* ─── Hero ───────────────────────────────────────────────────────── */
.hero { padding: 100px 0 80px; position: relative; overflow: hidden; }
.hero::before {
  content: ''; position: absolute; top: -200px; right: -200px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 65%);
  pointer-events: none;
}
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent-dim); border: 1px solid var(--accent);
  color: var(--accent); font-size: 12px; font-weight: 600;
  padding: 6px 14px; border-radius: 100px; margin-bottom: 28px;
  letter-spacing: .04em; text-transform: uppercase;
}
.hero-title {
  font-size: clamp(36px, 5.5vw, 62px); font-weight: 900;
  line-height: 1.08; letter-spacing: -.035em; margin-bottom: 24px;
}
.hero-title .accent { color: var(--accent); }
.hero-subtitle { font-size: 18px; color: var(--muted); line-height: 1.65; margin-bottom: 40px; max-width: 460px; }
.hero-cta { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; margin-bottom: 56px; }
.hero-stats { display: flex; gap: 40px; padding-top: 32px; border-top: 1px solid var(--border); }
.stat-num { font-size: 26px; font-weight: 800; letter-spacing: -.02em; }
.stat-label { font-size: 13px; color: var(--muted); margin-top: 2px; }
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; }
.hero-visual-inner { width: 100%; aspect-ratio: 1; max-width: 460px; position: relative; }
.hero-visual-bg {
  width: 100%; height: 100%; border-radius: 24px;
  background: var(--surface); border: 1px solid var(--border);
  overflow: hidden; display: flex; align-items: center; justify-content: center;
}

/* FDM Printer SVG illustration */
.printer-svg { width: 86%; height: 86%; }
.head-group { animation: head-slide 3.5s ease-in-out infinite alternate; }
@keyframes head-slide {
  from { transform: translateX(-62px); }
  to   { transform: translateX(62px);  }
}
.nozzle-glow, .nozzle-dot { animation: nozzle-pulse 0.45s ease-in-out infinite alternate; }
@keyframes nozzle-pulse {
  from { opacity: 0.35; }
  to   { opacity: 1;    }
}
.top-layer { animation: layer-flash 0.7s ease-in-out infinite alternate; }
@keyframes layer-flash {
  from { opacity: 0.6; }
  to   { opacity: 1;   }
}

/* Feature tags on visual */
.visual-tag {
  position: absolute; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 14px; font-size: 12px; font-weight: 600;
  display: flex; align-items: center; gap: 8px; box-shadow: var(--shadow); white-space: nowrap;
}
.visual-tag .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.tag-1 { top: 16px; right: -16px; }
.tag-2 { bottom: 40px; left: -16px; }
.tag-3 { bottom: -16px; right: 24px; }

/* ─── Trust bar ──────────────────────────────────────────────────── */
.trust-bar { padding: 40px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.trust-bar-inner { display: flex; align-items: center; gap: 48px; flex-wrap: wrap; }
.trust-label { font-size: 12px; font-weight: 600; color: var(--muted); letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
.trust-items { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; flex: 1; }
.trust-item { font-size: 14px; font-weight: 700; color: var(--muted); opacity: .6; transition: opacity .2s; }
.trust-item:hover { opacity: 1; }

/* ─── Services ───────────────────────────────────────────────────── */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
.service-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 36px 32px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
  position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent); opacity: 0; transition: opacity .2s;
}
.service-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 52px; height: 52px; border-radius: 12px; background: var(--accent-dim);
  display: flex; align-items: center; justify-content: center; margin-bottom: 24px; color: var(--accent);
}
.service-icon svg { width: 26px; height: 26px; }
.service-title { font-size: 20px; font-weight: 700; margin-bottom: 12px; letter-spacing: -.01em; }
.service-desc { font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 24px; }
.service-features { display: flex; flex-direction: column; gap: 8px; }
.service-feature { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.service-feature::before {
  content: ''; width: 16px; height: 16px; border-radius: 50%; flex-shrink: 0;
  background: var(--accent-dim); border: 1.5px solid var(--accent);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8l3.5 3.5L13 5' stroke='%23f97316' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center;
}

/* ─── Materials ──────────────────────────────────────────────────── */
.materials-section { background: var(--surface); }
.materials-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 56px; }
.material-card { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 28px 24px; transition: border-color .2s; }
.material-card:hover { border-color: var(--accent); }
.material-name { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.material-desc { font-size: 13px; color: var(--muted); line-height: 1.6; }
.material-tag { display: inline-block; margin-top: 14px; padding: 3px 10px; border-radius: 100px; font-size: 11px; font-weight: 600; background: var(--accent-dim); color: var(--accent); letter-spacing: .04em; }

/* ─── Process ────────────────────────────────────────────────────── */
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 64px; position: relative; }
.process-steps::before {
  content: ''; position: absolute; top: 28px;
  left: calc(12.5% + 16px); right: calc(12.5% + 16px);
  height: 2px; background: linear-gradient(90deg, var(--accent), var(--border));
}
.process-step { text-align: center; padding: 0 24px; }
.step-num {
  width: 56px; height: 56px; border-radius: 50%; background: var(--accent);
  color: var(--on-accent); font-size: 18px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 24px; position: relative; z-index: 1;
}
.step-num-gray { background: var(--surface); border: 2px solid var(--border); color: var(--muted); }
.step-title { font-size: 16px; font-weight: 700; margin-bottom: 10px; }
.step-desc { font-size: 13px; color: var(--muted); line-height: 1.65; }

/* ─── Products ───────────────────────────────────────────────────── */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
.product-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.product-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.product-image {
  aspect-ratio: 4/3; background: var(--surface-2);
  display: flex; align-items: center; justify-content: center; position: relative;
}
.product-image-1 { background: linear-gradient(135deg, var(--surface-2) 0%, var(--surface) 100%); }
.product-image-2 { background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%); }
.product-image-3 { background: linear-gradient(135deg, var(--surface-2) 0%, var(--bg) 100%); }
.product-shape {
  width: 80px; height: 80px; border-radius: 12px;
  background: var(--accent-dim); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center; color: var(--accent);
}
.product-shape svg { width: 40px; height: 40px; }
.product-body { padding: 24px; }
.product-category { font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.product-name { font-size: 18px; font-weight: 700; margin-bottom: 8px; letter-spacing: -.01em; }
.product-desc { font-size: 13px; color: var(--muted); line-height: 1.6; margin-bottom: 20px; }
.product-footer { display: flex; align-items: center; justify-content: space-between; }
.product-price { font-size: 22px; font-weight: 800; letter-spacing: -.02em; }
.product-price small { font-size: 13px; font-weight: 500; color: var(--muted); }
.buy-btn {
  display: inline-flex; align-items: center; gap: 7px; padding: 11px 22px;
  background: var(--accent); color: var(--on-accent);
  font-size: 13px; font-weight: 700; border-radius: 8px; border: none;
  cursor: pointer; transition: filter .2s, box-shadow .2s; font-family: inherit;
}
.buy-btn:hover { filter: brightness(1.1); box-shadow: 0 0 0 3px var(--accent-glow); }
.products-note { text-align: center; margin-top: 40px; font-size: 14px; color: var(--muted); }
.products-note a { color: var(--accent); font-weight: 600; }

/* ─── Quote ──────────────────────────────────────────────────────── */
.quote-section { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.quote-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.quote-perks { display: flex; flex-direction: column; gap: 16px; margin-top: 32px; }
.perk { display: flex; align-items: flex-start; gap: 14px; }
.perk-icon {
  width: 36px; height: 36px; border-radius: 8px; background: var(--accent-dim);
  color: var(--accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.perk-icon svg { width: 18px; height: 18px; }
.perk-title { font-size: 14px; font-weight: 700; margin-bottom: 3px; }
.perk-desc { font-size: 13px; color: var(--muted); }
.quote-form { background: var(--bg); border: 1px solid var(--border); border-radius: 20px; padding: 40px; }
.quote-form h3 { font-size: 20px; font-weight: 700; margin-bottom: 6px; letter-spacing: -.01em; }
.form-note { font-size: 13px; color: var(--muted); margin-bottom: 28px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px; background: var(--surface); border: 1.5px solid var(--border);
  border-radius: 8px; color: var(--text); font-family: inherit; font-size: 14px; transition: border-color .2s; -webkit-appearance: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); }
.form-group textarea { min-height: 100px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-submit { width: 100%; padding: 15px; font-size: 15px; border-radius: 10px; }

/* ─── FAQ ────────────────────────────────────────────────────────── */
.faq-list { max-width: 720px; margin: 56px auto 0; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0; cursor: pointer; font-size: 16px; font-weight: 600;
  gap: 16px; user-select: none;
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  width: 24px; height: 24px; border-radius: 50%; border: 1.5px solid var(--border);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: transform .25s, border-color .2s; color: var(--muted);
}
.faq-item.open .faq-icon { transform: rotate(45deg); border-color: var(--accent); color: var(--accent); }
.faq-answer {
  font-size: 14px; color: var(--muted); line-height: 1.75;
  max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease;
}
.faq-item.open .faq-answer { max-height: 300px; padding-bottom: 24px; }

/* ─── Footer ─────────────────────────────────────────────────────── */
.footer { background: var(--surface); border-top: 1px solid var(--border); padding: 64px 0 40px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 56px; }
.footer-brand p { font-size: 14px; color: var(--muted); line-height: 1.7; margin-top: 14px; max-width: 280px; }
.footer-col-title { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 20px; }
.footer-links-list { display: flex; flex-direction: column; gap: 12px; }
.footer-links-list a { font-size: 14px; color: var(--muted); transition: color .2s; }
.footer-links-list a:hover { color: var(--text); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 32px; border-top: 1px solid var(--border);
  font-size: 13px; color: var(--muted); flex-wrap: wrap; gap: 16px;
}
.footer-socials { display: flex; gap: 8px; }
.social-link {
  width: 36px; height: 36px; border-radius: 8px; border: 1.5px solid var(--border);
  display: flex; align-items: center; justify-content: center; color: var(--muted); transition: all .2s;
}
.social-link:hover { border-color: var(--accent); color: var(--accent); }
.social-link svg { width: 16px; height: 16px; }

/* ─── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .products-grid { grid-template-columns: 1fr 1fr; }
  .materials-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: 1fr 1fr; gap: 32px; }
  .process-steps::before { display: none; }
  .quote-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .services-grid, .products-grid, .materials-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { gap: 24px; }
  .hero { padding: 64px 0 48px; }
}

/* ─── Blog ───────────────────────────────────────────────────────── */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
.blog-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.blog-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.blog-card-body { padding: 28px; }
.post-date { font-size: 12px; color: var(--muted); letter-spacing: .04em; }
.blog-card-title { font-size: 18px; font-weight: 700; margin: 10px 0 10px; letter-spacing: -.01em; line-height: 1.35; }
.blog-card-title a { color: var(--text); }
.blog-card-title a:hover { color: var(--accent); }
.blog-card-excerpt { font-size: 13px; color: var(--muted); line-height: 1.65; margin-bottom: 16px; }
.blog-read-more { font-size: 13px; font-weight: 600; color: var(--accent); }
.blog-empty { font-size: 15px; color: var(--muted); margin-top: 48px; text-align: center; }

/* Blog post */
.blog-post-container { max-width: 720px; }
.blog-back { display: inline-block; font-size: 13px; color: var(--muted); margin-bottom: 32px; transition: color .2s; }
.blog-back:hover { color: var(--accent); }
.blog-post-header { margin-bottom: 48px; }
.blog-post-title { font-size: clamp(28px, 4vw, 44px); font-weight: 800; line-height: 1.15; letter-spacing: -.02em; margin: 12px 0 16px; }
.blog-post-excerpt { font-size: 17px; color: var(--muted); line-height: 1.65; margin-top: 16px; }
.blog-post-body { font-size: 16px; line-height: 1.8; color: var(--text); }
.blog-post-body h2 { font-size: 22px; font-weight: 700; margin: 40px 0 14px; letter-spacing: -.01em; }
.blog-post-body h3 { font-size: 18px; font-weight: 700; margin: 32px 0 10px; }
.blog-post-body p { margin-bottom: 18px; }
.blog-post-body ul, .blog-post-body ol { margin: 0 0 18px 24px; }
.blog-post-body li { margin-bottom: 8px; }
.blog-post-body strong { font-weight: 700; color: var(--text); }
.blog-post-body a { color: var(--accent); text-decoration: underline; }
.blog-post-body a:hover { opacity: .85; }
.blog-post-body code { font-size: 13px; background: var(--surface-2); padding: 2px 6px; border-radius: 4px; }

@media (max-width: 960px) { .blog-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .blog-grid { grid-template-columns: 1fr; } }