/* ===========================
   RESET & BASE
=========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ===========================
   VARIABLES — default (dark)
=========================== */
:root {
  --accent: #f07200;
  --accent-dim: rgba(240, 114, 0, 0.15);
  --bg: #0e0e0e;
  --bg-card: #161616;
  --bg-dark: #0a0a0a;
  --bg-navbar: rgba(14,14,14,0.85);
  --border: rgba(255,255,255,0.07);
  --text: #e0e0e0;
  --text-muted: #888;
  --text-heading: #ffffff;
  --hero-grid: rgba(255,255,255,0.03);
  --radius: 12px;
  --transition: 0.25s ease;
}

/* ===========================
   THEME — light
=========================== */
[data-theme="light"] {
  --accent: #e06500;
  --accent-dim: rgba(224, 101, 0, 0.12);
  --bg: #f5f5f5;
  --bg-card: #ffffff;
  --bg-dark: #ebebeb;
  --bg-navbar: rgba(245,245,245,0.92);
  --border: rgba(0,0,0,0.09);
  --text: #1a1a1a;
  --text-muted: #666;
  --text-heading: #0d0d0d;
  --hero-grid: rgba(0,0,0,0.04);
}

/* ===========================
   THEME — blue
=========================== */
[data-theme="blue"] {
  --accent: #3b82f6;
  --accent-dim: rgba(59, 130, 246, 0.15);
  --bg: #0b0f1a;
  --bg-card: #111827;
  --bg-dark: #070b14;
  --bg-navbar: rgba(11,15,26,0.88);
  --border: rgba(59,130,246,0.12);
  --text: #d1d9f0;
  --text-muted: #6b7ba4;
  --text-heading: #ffffff;
  --hero-grid: rgba(59,130,246,0.04);
}

/* ===========================
   THEME — green
=========================== */
[data-theme="green"] {
  --accent: #22c55e;
  --accent-dim: rgba(34, 197, 94, 0.15);
  --bg: #080f0b;
  --bg-card: #0d1a11;
  --bg-dark: #050d08;
  --bg-navbar: rgba(8,15,11,0.88);
  --border: rgba(34,197,94,0.1);
  --text: #d1f0da;
  --text-muted: #5e8a6e;
  --text-heading: #ffffff;
  --hero-grid: rgba(34,197,94,0.04);
}

/* ===========================
   LAYOUT
=========================== */
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-dark { background: var(--bg-dark); }

/* ===========================
   TYPOGRAPHY
=========================== */
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 520px;
  margin-bottom: 56px;
}
.accent { color: var(--accent); }

/* ===========================
   BUTTONS
=========================== */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: 8px;
  transition: background var(--transition), transform var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover { background: #d96600; transform: translateY(-1px); }
.btn-secondary {
  display: inline-block;
  background: transparent;
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.2);
  transition: border-color var(--transition), background var(--transition);
}
.btn-secondary:hover { border-color: var(--accent); background: var(--accent-dim); }
.btn-nav {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: 7px;
  font-size: 0.9rem;
  transition: background var(--transition);
}
.btn-nav:hover { background: #d96600; }

/* ===========================
   NAVBAR
=========================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--bg-navbar);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s, background var(--transition);
}
.navbar.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.6); }
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.logo {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--text-heading);
  letter-spacing: -0.02em;
}
.logo span { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: #fff; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 12px 24px 20px;
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  display: block;
  padding: 10px 0;
  font-size: 1rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--accent); }

/* ===========================
   HERO
=========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 66px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(240,114,0,0.08) 0%, transparent 70%);
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hero-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.hero-content { padding: 80px 0; }
.hero-badge {
  display: inline-block;
  background: var(--accent-dim);
  border: 1px solid rgba(240,114,0,0.3);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.hero-content h1 {
  font-size: clamp(2.6rem, 7vw, 5.5rem);
  font-weight: 900;
  color: var(--text-heading);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-content h1 span { color: var(--accent); }
.hero-sub {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 500px;
  margin-bottom: 40px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 64px; }
.hero-stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.stat span {
  display: block;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--accent);
}
.stat p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===========================
   CARDS (Services)
=========================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 48px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover { border-color: rgba(240,114,0,0.4); transform: translateY(-3px); }
.card-icon {
  width: 44px;
  height: 44px;
  color: var(--accent);
  margin-bottom: 20px;
}
.card-icon svg { width: 100%; height: 100%; }
.card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-heading); margin-bottom: 10px; }
.card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }

/* ===========================
   HOW IT WORKS
=========================== */
.steps {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 48px;
}
.step {
  flex: 1;
  min-width: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.step-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--accent);
  opacity: 0.5;
  line-height: 1;
  margin-bottom: 16px;
}
.step h3 { font-size: 1rem; font-weight: 700; color: var(--text-heading); margin-bottom: 10px; }
.step p { font-size: 0.87rem; color: var(--text-muted); line-height: 1.7; }
.step-arrow {
  font-size: 1.5rem;
  color: rgba(255,255,255,0.15);
  align-self: center;
  flex-shrink: 0;
}

/* ===========================
   PRICING
=========================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 16px;
  max-width: 740px;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  position: relative;
}
.pricing-card-featured {
  border-color: rgba(240,114,0,0.5);
  background: linear-gradient(135deg, #1a1108 0%, var(--bg-card) 60%);
}
.featured-badge {
  position: absolute;
  top: -13px;
  left: 24px;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.05em;
}
.pricing-card h3 { font-size: 1.3rem; font-weight: 800; color: var(--text-heading); margin-bottom: 8px; }
.pricing-desc { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 28px; }
.pricing-detail { border-top: 1px solid var(--border); padding-top: 20px; margin-bottom: 28px; }
.pricing-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.pricing-row:last-child { border-bottom: none; }
.pricing-note {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 28px;
  max-width: 520px;
}

/* ===========================
   GALLERY
=========================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 48px;
}
.gallery-item { border-radius: var(--radius); overflow: hidden; }
.gallery-placeholder {
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px dashed rgba(255,255,255,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), background var(--transition);
}
.gallery-placeholder:hover { border-color: rgba(240,114,0,0.4); background: #1a1208; }
.gallery-placeholder span {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
}
.gallery-note {
  margin-top: 32px;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
}
.gallery-note a { color: var(--accent); text-decoration: underline; }

/* ===========================
   QUOTE FORM
=========================== */
.quote-form {
  max-width: 720px;
  margin-top: 16px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #ccc;
  margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  padding: 12px 16px;
  transition: border-color var(--transition);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #555; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group select option { background: #1a1a1a; }
.form-group textarea { resize: vertical; min-height: 120px; }

/* Checkbox */
.checkbox-group { margin-bottom: 20px; }
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: 0.9rem;
  color: #ccc;
  user-select: none;
}
.checkbox-label input[type="checkbox"] { display: none; }
.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 5px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition);
}
.checkbox-label input:checked ~ .checkmark {
  background: var(--accent);
  border-color: var(--accent);
}
.checkbox-label input:checked ~ .checkmark::after {
  content: '';
  display: block;
  width: 5px;
  height: 9px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translateY(-1px);
}

/* ===========================
   QUOTE STEPS
=========================== */
.q-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}
.q-step-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 24px;
}
.q-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
  border-radius: 50%;
  flex-shrink: 0;
}

/* File drop */
.file-drop {
  border: 1.5px dashed rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 0;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: border-color var(--transition), background var(--transition);
  overflow: hidden;
}
.file-drop:hover { border-color: rgba(240,114,0,0.5); background: #1a1208; }
.file-drop input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
  border: none;
  padding: 0;
  z-index: 2;
}
.file-drop-inner {
  padding: 36px 24px;
  pointer-events: none;
}
.file-drop-icon {
  width: 40px;
  height: 40px;
  color: var(--accent);
  margin: 0 auto 12px;
}
.file-drop-icon svg { width: 100%; height: 100%; }
.file-drop-label { font-size: 0.95rem; color: #ccc; margin-bottom: 6px; }
.file-link { color: var(--accent); font-weight: 600; }
.file-hint { font-size: 0.78rem; color: var(--text-muted); }

/* STL Preview */
.preview-wrap {
  margin-top: 20px;
  background: #111;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.preview-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}
.preview-filename {
  font-size: 0.85rem;
  font-weight: 600;
  color: #ccc;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.preview-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.82rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 5px;
  transition: color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.preview-remove:hover { color: #e55; background: rgba(255,80,80,0.1); }
.preview-canvas-wrap {
  position: relative;
  width: 100%;
  height: 380px;
}
.preview-canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.preview-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: #111;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.preview-loading.hidden { display: none; }
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(240,114,0,0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.preview-hint {
  text-align: center;
  font-size: 0.75rem;
  color: #444;
  padding: 8px;
  border-top: 1px solid var(--border);
}

/* Model Stats Bar */
.model-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
}
.mstat {
  padding: 14px 16px;
  border-right: 1px solid var(--border);
}
.mstat:last-child { border-right: none; }
.mstat-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.mstat-val {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-heading);
}
.accent-stat .mstat-val { color: var(--accent); }
.infill-mstat .mstat-label { display: flex; justify-content: space-between; }
.infill-mstat input[type="range"] {
  width: 100%;
  margin-top: 6px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Color Swatches */
.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
  margin-bottom: 8px;
}
.color-swatch {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s, border-color 0.15s;
  position: relative;
}
.color-swatch:hover { transform: scale(1.15); }
.color-swatch.active {
  border-color: var(--accent);
  transform: scale(1.15);
}
.color-swatch.active::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 900;
  color: #fff;
  text-shadow: 0 0 3px #000;
}
.selected-color-name {
  font-size: 0.8rem;
  color: var(--text-muted);
  min-height: 18px;
}
.material-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 6px;
  min-height: 18px;
}
.need-design-row { margin-top: 20px; }

.btn-submit { margin-top: 8px; font-size: 1rem; padding: 16px 32px; }

.form-success {
  display: none;
  background: rgba(240,114,0,0.1);
  border: 1px solid rgba(240,114,0,0.3);
  border-radius: 8px;
  padding: 16px 20px;
  margin-top: 16px;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 500;
}
.form-success.visible { display: block; }

/* ===========================
   CONTACT
=========================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.contact-items { margin-top: 32px; display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1rem;
}
.contact-item svg { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; }
.contact-item a { color: #ccc; transition: color var(--transition); }
.contact-item a:hover { color: var(--accent); }
.contact-cta-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}
.contact-cta-box h3 { font-size: 1.5rem; font-weight: 800; color: var(--text-heading); margin-bottom: 10px; }
.contact-cta-box p { color: var(--text-muted); margin-bottom: 28px; }

/* ===========================
   FOOTER
=========================== */
.footer {
  background: #080808;
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer p { color: var(--text-muted); font-size: 0.85rem; }
.footer p a { color: var(--accent); }
.footer .logo { font-size: 1.1rem; font-weight: 900; }
.admin-link {
  font-size: 0.75rem;
  color: #333;
  transition: color var(--transition);
}
.admin-link:hover { color: var(--accent); }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .section { padding: 64px 0; }

  .hero-content h1 { font-size: 2.5rem; }
  .hero-stats { gap: 28px; }

  .form-row { grid-template-columns: 1fr; }

  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); align-self: center; }

  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { flex-direction: column; text-align: center; }

  .pricing-grid { grid-template-columns: 1fr; }

  .model-stats { grid-template-columns: 1fr 1fr; }
  .mstat:nth-child(2) { border-right: none; }
  .preview-canvas-wrap { height: 260px; }

  .q-step { padding: 20px; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .model-stats { grid-template-columns: 1fr 1fr; }
}

/* ===========================
   THEME PICKER
=========================== */
.theme-picker {
  position: relative;
}
.theme-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  font-family: inherit;
  padding: 6px 10px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.theme-btn:hover { border-color: var(--accent); color: var(--text); }
.theme-btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.theme-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px;
  min-width: 160px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  display: none;
  z-index: 2000;
}
.theme-dropdown.open { display: block; }
.theme-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  background: none;
  border: none;
  border-radius: 7px;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-family: inherit;
  font-weight: 500;
  padding: 9px 12px;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition), color var(--transition);
}
.theme-option:hover { background: var(--accent-dim); color: var(--text); }
.theme-option.active { color: var(--accent); font-weight: 600; }
.theme-swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid rgba(255,255,255,0.15);
}