:root {
  --bg-canvas: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F1F5F9;
  --ink-primary: #0F172A;
  --ink-secondary: #1E293B;
  --ink-muted: #334155;
  --border-light: #CBD5E1;
  --border-strong: #0F172A;
  --packout-orange: #EA580C;
  --packout-orange-dark: #C2410C;
  --packout-orange-soft: #FFF7ED;
  --cad-blue: #0284C7;
  --cad-blue-dark: #0369A1;
  --cad-blue-soft: #E0F2FE;
  --foam-emerald: #059669;
  --foam-emerald-soft: #ECFDF5;
  --foam-red: #DC2626;
  --foam-red-soft: #FEF2F2;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 7px;
  --shadow-card: 0 6px 22px rgba(15, 23, 42, 0.05);
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-canvas);
  color: var(--ink-primary);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  max-width: 100vw;
}

.tabular {
  font-variant-numeric: tabular-nums;
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}

.partner-banner {
  display: none;
  background: #0F172A;
  color: #FFFFFF;
  text-align: center;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
}

.top-nav {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 40;
}

.nav-inner {
  max-width: 1380px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink-primary);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, #0F172A 0%, #EA580C 100%);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  min-width: 0;
}

.nav-links a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
}

.nav-links a:hover {
  color: var(--packout-orange);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  max-width: 100%;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--packout-orange); color: #FFFFFF; }
.btn-primary:hover { background: var(--packout-orange-dark); }
.btn-cad { background: var(--cad-blue); color: #FFFFFF; }
.btn-cad:hover { background: var(--cad-blue-dark); }
.btn-navy { background: var(--ink-primary); color: #FFFFFF; }
.btn-navy:hover { background: #1E293B; }
.btn-outline { background: #FFFFFF; color: var(--ink-primary); border-color: var(--border-light); }
.btn-outline:hover { border-color: var(--cad-blue); color: var(--cad-blue-dark); }

.container-main {
  max-width: 1380px;
  margin: 0 auto;
  padding: 18px 20px 56px;
  width: 100%;
}

.hero-strip {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--packout-orange-soft);
  color: var(--packout-orange-dark);
  border: 1px solid #FDBA74;
  font-size: 11.5px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  max-width: 100%;
}

.hero-strip h1 {
  margin: 8px 0 8px;
  font-size: 25px;
  line-height: 1.22;
  letter-spacing: -0.025em;
  color: var(--ink-primary);
}

.hero-strip p {
  margin: 0;
  color: var(--ink-secondary);
  font-size: 14.5px;
}

.hero-kpis {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.kpi-mini {
  background: var(--bg-canvas);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  min-width: 0;
}

.kpi-mini .lbl { font-size: 11px; font-weight: 700; color: var(--ink-muted); text-transform: uppercase; }
.kpi-mini .val { font-size: 17.5px; font-weight: 800; color: var(--ink-primary); margin-top: 2px; }

.engine-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 16px;
}

.engine-tab {
  background: var(--bg-surface);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  text-align: left;
  cursor: pointer;
  min-width: 0;
  transition: all 0.14s ease;
}

.engine-tab .t-num { font-size: 11px; font-weight: 800; color: var(--cad-blue-dark); display: block; }
.engine-tab .t-title { font-size: 13.5px; font-weight: 800; color: var(--ink-primary); display: block; margin-top: 2px; }
.engine-tab .t-sub { font-size: 11.5px; color: var(--ink-muted); display: block; margin-top: 2px; }

.engine-tab.active {
  border-color: var(--packout-orange);
  background: var(--packout-orange-soft);
  box-shadow: 0 3px 12px rgba(234, 88, 12, 0.12);
}

.engine-tab.active .t-num { color: var(--packout-orange-dark); }

.studio-grid {
  display: grid;
  grid-template-columns: minmax(0, 430px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.studio-grid > *,
.hero-strip > *,
.walkthrough-grid > *,
.top-nav,
.nav-inner,
.panel-card,
.viewport-card,
.seo-section {
  min-width: 0;
  max-width: 100%;
}

.panel-card,
.viewport-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  box-shadow: var(--shadow-card);
}

.panel-title {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 800;
  color: var(--ink-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.form-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.form-grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.form-grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }

.field { margin-bottom: 9px; min-width: 0; max-width: 100%; }
.field label { display: block; font-size: 12px; font-weight: 700; color: var(--ink-secondary); margin-bottom: 3px; }
.field input, .field select {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  text-overflow: ellipsis;
  padding: 7.5px 9px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-primary);
  background: #FFFFFF;
}
.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--cad-blue);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.14);
}

.viewport-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.canvas-wrap {
  position: relative;
  width: 100%;
  max-width: 100%;
  background: #F1F5F9;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

#foamCanvas {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 430px;
  touch-action: none;
  cursor: grab;
}

#foamCanvas:active { cursor: grabbing; }

.step-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  margin-top: 9px;
  font-size: 12px;
  font-weight: 700;
}

.swatch-row {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.swatch-btn {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid #FFFFFF;
  box-shadow: 0 0 0 1px #94A3B8;
  cursor: pointer;
  padding: 0;
}

.swatch-btn.active {
  box-shadow: 0 0 0 2.5px var(--ink-primary);
}

.pocket-list {
  max-height: 215px;
  overflow-y: auto;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  margin-top: 6px;
}

.pocket-item {
  padding: 7px 9px;
  border-bottom: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  cursor: pointer;
}

.pocket-item:hover, .pocket-item.selected {
  background: var(--cad-blue-soft);
}

.pocket-item.colliding {
  background: var(--foam-red-soft);
  border-left: 3px solid var(--foam-red);
}

.metrics-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 9px;
  margin-top: 12px;
}

.metric-box {
  background: var(--bg-canvas);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 10px 11px;
  min-width: 0;
}

.metric-box .m-label { font-size: 11px; font-weight: 700; color: var(--ink-muted); }
.metric-box .m-val { font-size: 17px; font-weight: 800; color: var(--ink-primary); margin-top: 2px; }
.metric-box .m-sub { font-size: 11px; color: var(--ink-secondary); margin-top: 2px; }

.linter-box {
  margin-top: 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 11px 13px;
  background: #FFFFFF;
}

.lint-item {
  font-size: 12.5px;
  padding: 4px 0;
  border-bottom: 1px dashed #E2E8F0;
  display: flex;
  gap: 7px;
  align-items: flex-start;
}

.lint-item:last-child { border-bottom: 0; }

.export-bar {
  margin-top: 13px;
  padding-top: 13px;
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.walkthrough-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 20px;
  align-items: center;
}

.hub-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 255px), 1fr));
  gap: 10px;
}

.seo-section {
  margin-top: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-card);
}

.data-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 10px; }
.data-table th, .data-table td { border: 1px solid var(--border-light); padding: 8px 10px; text-align: left; }
.data-table th { background: var(--bg-canvas); font-weight: 800; }

.modal-backdrop {
  display: none; position: fixed; inset: 0; background: rgba(15, 23, 42, 0.65);
  z-index: 100; align-items: center; justify-content: center; padding: 14px;
}
.modal-backdrop.open { display: flex; }
.modal-card {
  background: #FFFFFF; border-radius: 16px; max-width: 630px; width: 100%;
  padding: 22px; border: 1px solid var(--border-light); max-height: 92vh; overflow-y: auto;
}

@media (max-width: 1080px) {
  .hero-strip, .studio-grid, .walkthrough-grid { grid-template-columns: minmax(0, 1fr); }
  .engine-tabs, .metrics-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .top-nav, footer { width: 100%; max-width: 100vw; overflow-x: hidden; }
  .nav-inner { padding: 10px 12px; gap: 8px; width: 100%; max-width: 100%; }
  .nav-links { gap: 6px 10px; width: 100%; max-width: 100%; }
  .nav-links a { font-size: 12px; }
  .nav-links .btn { font-size: 12px; padding: 7px 10px; }
  .container-main { padding: 12px 12px 44px; width: 100%; max-width: 100vw; overflow-x: hidden; }
  .hero-strip, .panel-card, .viewport-card, .seo-section { padding: 13px; min-width: 0; width: 100%; max-width: 100%; overflow-x: hidden; }
  .hero-strip h1 { font-size: 19px; overflow-wrap: anywhere; word-break: break-word; }
  .hero-badge { white-space: normal; font-size: 10.5px; }
  .engine-tabs, .form-grid-2, .form-grid-3, .form-grid-4, .metrics-grid-4, .hero-kpis, .walkthrough-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .export-bar .btn { width: 100%; }
  #foamCanvas { height: 295px; }
}