/* ─── Base ─────────────────────────────────────────────────── */
:root {
  --bg: #F8F9FA;
  --surface: #ffffff;
  --text: #111827;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --border-hover: #D1D5DB;
  --accent: #2563EB;        /* confident cobalt blue */
  --accent-hover: #1D4ED8;
  --accent-soft: #EFF6FF;
  --green: #059669;
  --transition: .15s;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: 15px; line-height: 1.5;
  color: var(--text); background: var(--bg);
  min-height: 100vh;
  display: flex; flex-direction: column;
}
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; width: 100%; }
.hidden { display: none !important; }

h1, h2, h3 { margin: 0; letter-spacing: -.02em; }
p { margin: 0; }

kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  background: #fff; border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text);
}

/* ─── Header ───────────────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none;
}
.logo-mark {
  display: block; color: var(--text); flex-shrink: 0;
}
.logo-text {
  font-size: 17px; font-weight: 500; letter-spacing: -.02em;
}
.logo-text strong { font-weight: 600; }

/* ─── Upload section ───────────────────────────────────────── */
main { flex: 1 0 auto; padding: 56px 0 64px; }
/* When the editor is showing, use a tight top/bottom padding so everything
   fits in one viewport without page scroll. */
body.editor-active main { padding: 16px 0 12px; }
body.editor-active main.container { max-width: none; padding: 0; }
body.editor-active .header-inner.container { max-width: none; padding: 0 24px; }
.upload-hero {
  text-align: center; max-width: 680px; margin: 0 auto 32px;
}
.hero-badge {
  display: inline-block;
  font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: #2563EB;
  background: #EFF6FF;
  border-radius: 999px;
  padding: 4px 14px;
  margin-top: 16px;
  margin-bottom: 20px;
}
.upload-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700; line-height: 1.1;
  letter-spacing: -.025em;
  margin-bottom: 16px;
}
.upload-hero p {
  color: var(--text-muted); font-size: 17px; line-height: 1.55;
  max-width: 560px; margin: 0 auto;
}

.drop-zone {
  display: block; width: 100%; max-width: 680px; margin: 0 auto;
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: 16px;
  padding: 48px 24px;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  font: inherit; color: inherit;
  text-align: center;
}
.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.drop-zone-icon {
  margin-bottom: 14px; line-height: 0;
  display: flex; justify-content: center;
}
.drop-zone-title { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.drop-zone-sub { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; }
.drop-zone-link { color: var(--text); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
.drop-zone-hint { color: #9CA3AF; font-size: 12px; }

.sample-row {
  display: flex; align-items: center; justify-content: center; gap: 14px;
  flex-wrap: wrap;
  max-width: 680px; margin: 18px auto 0;
}
.btn-sample {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font: inherit; font-size: 13px; font-weight: 500;
  color: var(--text); cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}
.btn-sample:hover { border-color: var(--text); background: #F4F4F5; }
.btn-sample svg { color: var(--text); }
.sample-hint { font-size: 12px; color: var(--text-muted); }
@media (max-width: 520px) {
  .sample-hint { display: none; }
}

.trust-strip {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 8px; margin: 28px auto 0; max-width: 760px;
}
.trust-pill {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 600; color: #374151;
  background: #F3F4F6; border: 1px solid #E5E7EB;
  border-radius: 999px; padding: 5px 12px;
}

/* ─── Features section ─────────────────────────────────────── */
.features-section {
  padding: 56px 0 8px;
  border-top: 1px solid var(--border);
  margin-top: 48px;
}
.features-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}
.feature-card {
  flex: 1 1 240px;
  max-width: 300px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
}
.feature-icon { margin-bottom: 14px; line-height: 0; }
.feature-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin: 0; }
.feature-card-highlight {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.feature-card-highlight h3 { color: var(--accent-hover); }
[data-theme="dark"] .feature-card-highlight {
  border-color: var(--accent);
  background: var(--accent-soft);
}
[data-theme="dark"] .feature-card-highlight h3 { color: var(--accent); }

.hero-highlight {
  margin: 14px auto 0;
  max-width: 620px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-muted);
}
.hero-highlight strong { color: var(--text); font-weight: 600; }

/* ─── FAQ section ───────────────────────────────────────────── */
.faq-section {
  padding: 32px 0 56px;
  border-top: 1px solid var(--border);
  margin-top: 48px;
  max-width: 680px;
  margin-left: auto; margin-right: auto;
}
.faq-header {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; margin-bottom: 28px;
}
.faq-label {
  font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  background: #EFF6FF; color: #2563EB;
  padding: 4px 12px; border-radius: 999px;
}
.faq-header h2 { font-size: 22px; font-weight: 700; margin: 0; }
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; cursor: pointer; list-style: none;
  font-weight: 600; font-size: 15px; gap: 12px;
  user-select: none;
}
.faq-question::-webkit-details-marker { display: none; }
details[open] .faq-question { color: #2563EB; }
.faq-chevron { font-size: 18px; flex-shrink: 0; transition: transform .2s; }
details[open] .faq-chevron { transform: rotate(180deg); }
.faq-answer {
  padding: 0 20px 18px 20px;
  font-size: 14px; color: var(--text-muted); line-height: 1.65;
  border-left: 3px solid #E5E7EB;
  margin-left: 20px; padding-left: 14px;
}

/* ─── Editor layout ────────────────────────────────────────── */
.editor-section { padding: 8px 0 0; }
.editor-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 20px;
  padding: 0 24px;
  /* Fit the editor inside the viewport so the 3D view never needs scrolling.
     The right panel scrolls internally when its content overflows. */
  /* header(61) + section-pad(8) + footer(48) + safety(8) */
  height: calc(100vh - 125px);
  min-height: 400px;
}
@media (max-width: 900px) {
  .editor-layout { grid-template-columns: 1fr; height: auto; }
}

/* Viewer */
.viewer-wrap {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  min-height: 0;
}
.viewer-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  gap: 12px;
}
.viewer-filename {
  font-size: 13px; font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.viewer-actions { display: flex; gap: 6px; flex-shrink: 0; }

.viewer-container {
  position: relative; flex: 1; min-height: 0;
  background: #FAFAF8;
}
#viewerCanvas { display: block; width: 100%; height: 100%; }

.view-cube {
  position: absolute; top: 14px; right: 14px;
  width: 96px;
  display: flex; flex-direction: column; align-items: center; gap: 0;
  z-index: 3;
}
#viewCubeCanvas {
  width: 96px; height: 96px;
  cursor: pointer;
  background: transparent;
}
.view-cube-home {
  margin-top: -6px;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: none;
  color: #9CA3AF;
  cursor: pointer;
  padding: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity .12s, color .12s;
}
.view-cube:hover .view-cube-home,
.view-cube-home:focus-visible {
  opacity: 1;
  pointer-events: auto;
}
.view-cube-home:hover { color: var(--text); }

.viewer-hint {
  position: absolute; left: 12px; bottom: 12px;
  background: rgba(255,255,255,.92);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 11px; color: var(--text-muted);
  display: flex; gap: 6px; flex-wrap: wrap; align-items: center;
  pointer-events: none;
  backdrop-filter: blur(4px);
}

/* Texture rotation control floating on the selected face. Anchored each
   frame via JS to the face's screen-space centre. */
.rotate-overlay {
  position: absolute;
  width: 46px; height: 46px;
  padding: 0;
  border-radius: 50%;
  background: rgba(255,255,255,.96);
  border: 1px solid rgba(0,0,0,.08);
  box-shadow: 0 6px 18px rgba(15,23,42,.18), 0 1px 3px rgba(15,23,42,.12);
  color: #1F2937;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1px;
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: transform .12s ease, background .12s, box-shadow .12s;
  z-index: 4;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.rotate-overlay:hover {
  background: #fff;
  transform: translate(-50%, -50%) scale(1.07);
  box-shadow: 0 10px 22px rgba(15,23,42,.22), 0 1px 3px rgba(15,23,42,.14);
}
.rotate-overlay:active { transform: translate(-50%, -50%) scale(0.96); }
.rotate-overlay svg { display: block; }
.rotate-overlay-angle {
  font-size: 9px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
[data-theme="dark"] .rotate-overlay {
  background: rgba(30,39,64,.94);
  border-color: var(--border-hover);
  color: var(--text);
  box-shadow: 0 6px 18px rgba(0,0,0,.5), 0 1px 3px rgba(0,0,0,.35);
}
[data-theme="dark"] .rotate-overlay:hover { background: rgba(40,52,82,1); }
[data-theme="dark"] .rotate-overlay-angle { color: var(--accent); }
.scale-bar {
  position: absolute; left: 14px; top: 14px;
  display: flex; flex-direction: column; align-items: flex-start; gap: 3px;
  pointer-events: none;
  z-index: 3;
}
.scale-bar-line {
  height: 6px;
  border: 1.5px solid rgba(60,60,60,.65);
  border-top: none;
  background: transparent;
  min-width: 20px;
  transition: width .15s;
}
.scale-bar-label {
  font-size: 10px;
  color: rgba(60,60,60,.75);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  background: rgba(255,255,255,.75);
  padding: 0 3px;
  border-radius: 3px;
}
.viewer-spinner {
  position: absolute; inset: 0;
  background: rgba(255,255,255,.7);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--text); font-weight: 500;
  backdrop-filter: blur(2px);
  z-index: 2;
}
.viewer-spinner-card {
  display: flex; flex-direction: column; gap: 12px;
  min-width: 240px; padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,.12);
}
.viewer-spinner-label {
  font-size: 13px; color: var(--text); font-weight: 500;
  text-align: center;
}
.viewer-spinner-cancel {
  align-self: center;
  margin-top: 4px;
  font-size: 12px;
  padding: 4px 14px;
}
.viewer-spinner-cancel.hidden { display: none; }

/* Confirmation modal */
.modal-overlay {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(24, 24, 27, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  padding: 24px;
  animation: modal-fade-in .15s ease-out;
}
.modal-overlay.hidden { display: none; }
.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 24px 60px rgba(0,0,0,.22), 0 2px 6px rgba(0,0,0,.06);
  padding: 22px 24px 18px;
  max-width: 440px;
  width: 100%;
  animation: modal-pop-in .18s cubic-bezier(.2,.9,.3,1.2);
}
.modal-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 12px;
}
.modal-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  flex-shrink: 0;
}
.modal-icon-warn {
  background: #FEF3C7;
  color: #B45309;
}
.modal-title {
  margin: 0;
  font-size: 16px; font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}
.modal-body {
  margin: 0 0 20px;
  font-size: 13.5px; line-height: 1.55;
  color: var(--text-muted);
  white-space: pre-line;
}
.modal-actions {
  display: flex; gap: 8px; justify-content: flex-end;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.modal-btn {
  width: auto;
  min-width: 92px;
  padding: 8px 16px;
}
.modal-btn:focus-visible {
  outline: 2px solid #4a8bff;
  outline-offset: 2px;
}
@keyframes modal-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes modal-pop-in {
  from { opacity: 0; transform: translateY(8px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .modal-overlay, .modal-card { animation: none; }
}
.viewer-progress {
  position: relative;
  height: 8px; width: 100%;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.viewer-progress-fill {
  position: absolute; inset: 0 auto 0 0;
  width: 0%;
  background: linear-gradient(90deg, #4a8bff, #6f5cff);
  border-radius: 999px;
  transition: width 180ms ease;
}
.viewer-progress.indeterminate .viewer-progress-fill {
  width: 40%;
  animation: viewer-progress-slide 1.1s ease-in-out infinite;
}
@keyframes viewer-progress-slide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(250%); }
}

/* Panel */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0;
  display: flex; flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.panel-section {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
}
.panel-section:has(> .texture-gallery) {
  flex: 1 1 0;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.panel-section:last-of-type { border-bottom: none; }
.panel-title {
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .06em;
  color: var(--text-muted);
  margin: 0 0 3px;
}
.panel-note {
  font-size: 11px; color: var(--text-muted); line-height: 1.3;
}
.panel-note.depth-hint { margin-top: 2px; }
.panel-note.apply-shortcut-hint {
  margin: 6px 0 0;
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
}
.panel-note.apply-shortcut-hint strong { color: var(--text); font-weight: 600; }

/* Mask controls */
.mask-row {
  display: flex; gap: 6px; margin-bottom: 6px;
}
.mask-toggle.btn-secondary { flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-width: 0; }
.mask-toggle[aria-pressed="true"] {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.mask-clear.btn-secondary { flex: 0 0 auto; width: auto; }
.brush-row { margin-top: 4px; }

/* Texture gallery */
.texture-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, 52px);
  grid-auto-rows: 52px;
  justify-content: space-between;
  align-content: start;
  gap: 5px;
  flex: 1 1 0;
  min-height: 0;
  overflow-y: auto;
}
.tex-swatch {
  position: relative;
  border-radius: 6px;
  border: 2px solid transparent;
  overflow: hidden; cursor: pointer;
  background: #F4F4F5;
  padding: 0;
  transition: border-color var(--transition), transform var(--transition);
}
.tex-swatch:hover { transform: translateY(-1px); border-color: var(--border-hover); }
.tex-swatch.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(61,107,79,0.22);
}
.tex-swatch.selected .tex-swatch-label {
  background: var(--accent);
  color: #fff;
}
.tex-swatch canvas, .tex-swatch img {
  display: block; width: 100%; height: 100%; object-fit: cover;
}
.tex-swatch-label {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,.55); color: #fff;
  font-size: 8px; font-weight: 500;
  padding: 1px 2px;
  text-align: center;
  letter-spacing: .02em;
}

/* Hover preview popup for texture swatches */
.tex-swatch-preview {
  position: fixed;
  z-index: 1000;
  width: 116px;
  background: var(--surface, #fff);
  border: 1px solid var(--border, #E5E7EB);
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0,0,0,.16), 0 2px 4px rgba(0,0,0,.08);
  padding: 6px;
  pointer-events: none;
  opacity: 1;
  transition: opacity .12s;
}
.tex-swatch-preview.hidden { opacity: 0; pointer-events: none; }
.tex-swatch-preview-canvas {
  display: block;
  width: 100px; height: 100px;
  border-radius: 5px;
  background: #F4F4F5;
  image-rendering: -webkit-optimize-contrast;
}
.tex-swatch-preview-label {
  margin-top: 6px;
  text-align: center;
  font-size: 12px;
  font-weight: 500;
  color: var(--text, #18181B);
}

.upload-texture-row { margin-top: 10px; }

/* Custom-texture confirmation chip (shown after "Upload your own…") */
.custom-texture-chip {
  display: flex; align-items: center; gap: 10px;
  margin-top: 10px;
  padding: 8px 10px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 10px;
  animation: chip-in .18s ease-out;
}
.custom-texture-chip.hidden { display: none; }
.custom-texture-thumb {
  flex: 0 0 auto;
  width: 40px; height: 40px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #F4F4F5;
  object-fit: cover;
  image-rendering: -webkit-optimize-contrast;
}
.custom-texture-meta { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.custom-texture-tag {
  font-size: 11px; font-weight: 600; letter-spacing: .02em;
  color: var(--accent-hover);
}
.custom-texture-name {
  font-size: 12px; color: var(--text-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.custom-texture-check { flex: 0 0 auto; color: var(--accent); }
.btn-secondary.is-active {
  border-color: var(--accent);
  color: var(--accent-hover);
  background: var(--accent-soft);
}
@keyframes chip-in {
  from { opacity: 0; transform: translateY(-3px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Depth control */
.depth-row {
  display: flex; align-items: center; gap: 8px;
}
.depth-row input[type="range"] { flex: 1; accent-color: var(--accent); }
.depth-row input[type="number"] {
  width: 70px; padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit; font-size: 13px;
  text-align: right;
}
.depth-unit { font-size: 12px; color: var(--text-muted); }

/* Buttons */
.btn-primary, .btn-secondary, .btn-ghost, .btn-export {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 14px;
  border-radius: 8px;
  font-family: inherit; font-size: 14px; font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform .1s;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary:active, .btn-secondary:active, .btn-ghost:active, .btn-export:active { transform: translateY(1px); }
.btn-icon { flex: 0 0 auto; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); width: 100%; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-primary:disabled { background: #C7C7CC; border-color: #C7C7CC; cursor: not-allowed; }
.btn-secondary {
  background: #fff; color: var(--text); border-color: var(--border);
  width: 100%;
}
.btn-secondary:hover { background: #F4F4F5; border-color: var(--border-hover); }
.btn-ghost {
  background: transparent; color: var(--text-muted); border-color: var(--border);
  padding: 6px 10px; font-size: 12px;
}
.btn-ghost:hover { background: #F4F4F5; color: var(--text); }
.btn-ghost:disabled { color: #C7C7CC; cursor: not-allowed; }
.btn-ghost:disabled:hover { background: transparent; }
.btn-export {
  background: var(--text); color: #fff; border-color: var(--text); width: 100%;
}
.btn-export:hover { background: #1F2937; border-color: #1F2937; }
.btn-export:disabled { background: #C7C7CC; border-color: #C7C7CC; cursor: not-allowed; }

.panel-actions {
  display: flex; flex-direction: column; gap: 6px;
  background: #FAFAFA;
}
.panel-actions .apply-shortcut-hint { margin: 2px 0; }

.status-line {
  position: absolute;
  right: 14px; bottom: 14px;
  z-index: 4;
  padding: 6px 12px;
  background: rgba(255,255,255,.94);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 12px; color: var(--text-muted);
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
  max-width: 50%;
  pointer-events: none;
}
.status-line:empty { display: none; }
.status-line.success { color: var(--green); }
.status-line.error { color: #DC2626; }

/* ─── Custom tooltip ───────────────────────────────────────── */
.app-tooltip {
  position: fixed;
  z-index: 9999;
  background: #111827;
  color: #F9FAFB;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: 12px;
  line-height: 1.4;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 6px;
  box-shadow: 0 6px 16px rgba(0,0,0,.18), 0 2px 4px rgba(0,0,0,.08);
  max-width: 260px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(2px);
  transition: opacity .12s ease, transform .12s ease;
  white-space: normal;
}
.app-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
}
.app-tooltip::after {
  content: '';
  position: absolute;
  left: var(--arrow-x, 50%);
  transform: translateX(-50%);
  width: 0; height: 0;
  border: 5px solid transparent;
}
.app-tooltip[data-placement="top"]::after {
  bottom: -10px;
  border-top-color: #111827;
}
.app-tooltip[data-placement="bottom"]::after {
  top: -10px;
  border-bottom-color: #111827;
}

/* ─── Theme toggle icon swap ───────────────────────────────── */
#btnThemeToggle .icon-theme-sun,
#btnThemeToggle .icon-theme-moon { display: none; }
:root:not([data-theme="dark"]) #btnThemeToggle .icon-theme-moon { display: inline; }
[data-theme="dark"] #btnThemeToggle .icon-theme-sun { display: inline; }

/* ─── Dark theme ───────────────────────────────────────────── */
[data-theme="dark"] {
  --bg: #0B0F1A;
  --surface: #151A28;
  --text: #E5E7EB;
  --text-muted: #9CA3AF;
  --border: #2A3142;
  --border-hover: #3D4660;
  --accent: #60A5FA;
  --accent-hover: #93C5FD;
  --accent-soft: #1E293B;
  --green: #34D399;
  color-scheme: dark;
}

/* Override hardcoded light surfaces. Each rule mirrors a literal value
   used elsewhere in this file so a dark theme works without a full
   rewrite. Keep these grouped at the end so they win on cascade. */
[data-theme="dark"] body { background: var(--bg); color: var(--text); }
[data-theme="dark"] code { background: #1E2333; border-color: var(--border); color: var(--text); }
[data-theme="dark"] .btn-sample:hover { background: #1E2333; }
[data-theme="dark"] .btn-secondary { background: var(--surface); color: var(--text); }
[data-theme="dark"] .btn-secondary:hover { background: #1E2333; }
[data-theme="dark"] .btn-ghost:hover { background: rgba(255,255,255,.06); color: var(--text); }
[data-theme="dark"] .btn-primary:disabled,
[data-theme="dark"] .btn-export:disabled { background: #2A3142; border-color: #2A3142; color: #D1D5DB; }
[data-theme="dark"] .btn-ghost:disabled { color: #6B7280; }
[data-theme="dark"] kbd { background: #1E2333; border-color: #3D4660; color: var(--text); }
[data-theme="dark"] .btn-export { background: var(--accent); border-color: var(--accent); color: #0B0F1A; }
[data-theme="dark"] .btn-export:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

/* White card / dropdown / panel surfaces */
[data-theme="dark"] .preset-list,
[data-theme="dark"] .preset-tile,
[data-theme="dark"] .control-card,
[data-theme="dark"] .feature-card,
[data-theme="dark"] .faq-item,
[data-theme="dark"] .upload-card,
[data-theme="dark"] .dropzone,
[data-theme="dark"] .editor-panel,
[data-theme="dark"] .editor-aside,
[data-theme="dark"] .editor-header,
[data-theme="dark"] select,
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] textarea { background: var(--surface); color: var(--text); border-color: var(--border); }

[data-theme="dark"] .preset-tile:hover,
[data-theme="dark"] .feature-card:hover { border-color: var(--border-hover); }
[data-theme="dark"] .preset-tile.active { border-color: var(--accent); background: var(--accent-soft); }

/* Subtle panels / strips that used near-white grays */
[data-theme="dark"] .file-chip,
[data-theme="dark"] .help-overlay,
[data-theme="dark"] .editor-toolbar { background: #1E2333; border-color: var(--border); color: var(--text); }
[data-theme="dark"] .trust-pill { background: var(--surface); color: var(--text-muted); border-color: var(--border); }

/* HUD overlays over the 3D viewer used translucent white */
[data-theme="dark"] .view-cube-wrap,
[data-theme="dark"] .viewer-hint,
[data-theme="dark"] .status-line { background: rgba(21,26,40,.85); color: var(--text); border-color: var(--border); }

/* Scale bar is a thin overlay (not a card). In dark mode the line border
   and label need their own colours so they read on the dark canvas. */
[data-theme="dark"] .scale-bar-line { border-color: rgba(229,231,235,.75); }
[data-theme="dark"] .scale-bar-label {
  background: rgba(21,26,40,.85);
  color: var(--text);
}

/* FAQ summary chevron / pill */
[data-theme="dark"] .faq-item summary { color: var(--text); }
[data-theme="dark"] .faq-item[open] summary { color: var(--accent); }
[data-theme="dark"] .section-eyebrow,
[data-theme="dark"] .hero-eyebrow,
[data-theme="dark"] .hero-badge,
[data-theme="dark"] .faq-label { background: var(--accent-soft); color: var(--accent); }

/* Headings, paragraphs, footer */
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3 { color: var(--text); }
[data-theme="dark"] .site-footer,
[data-theme="dark"] footer { background: transparent; color: var(--text-muted); border-color: var(--border); }
[data-theme="dark"] .site-header { background: rgba(11,15,26,.85); border-color: var(--border); backdrop-filter: blur(8px); }
[data-theme="dark"] .logo-mark path[fill="#F4F4F5"] { fill: var(--surface); }
[data-theme="dark"] a { color: var(--accent); }

/* Tooltip flips in dark mode so it stays distinct from page bg */
[data-theme="dark"] .app-tooltip { background: #F9FAFB; color: #111827; box-shadow: 0 6px 16px rgba(0,0,0,.5), 0 2px 4px rgba(0,0,0,.3); }
[data-theme="dark"] .app-tooltip[data-placement="top"]::after { border-top-color: #F9FAFB; }
[data-theme="dark"] .app-tooltip[data-placement="bottom"]::after { border-bottom-color: #F9FAFB; }

/* Bottom action row (Apply / Export) needs an explicit dark surface
   override — its light grey base was bleeding through. */
[data-theme="dark"] .panel-actions { background: var(--surface); }
[data-theme="dark"] .panel-section { background: transparent; }
[data-theme="dark"] .btn-export { background: var(--accent); border-color: var(--accent); color: #0B0F1A; }
[data-theme="dark"] .btn-export:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

/* ─── Header support button (matches clean_for_ai exactly) ─── */
.btn-support {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  background: #29ABE0; color: #fff;
  border: none; border-radius: 8px;
  font-size: 13px; font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background .15s;
}
.btn-support:hover { background: #22A0D5; }
.header-nav { display: flex; align-items: center; gap: 10px; }

/* ─── Donation modal ───────────────────────────────────────── */
.donate-modal {
  max-width: 420px;
  padding: 0;
  position: relative;
}
.donate-close {
  position: absolute; top: 12px; right: 12px;
  width: 32px; height: 32px;
  border: none; background: transparent; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px; color: #9CA3AF;
  transition: background .15s, color .15s;
}
.donate-close:hover { background: #F4F4F5; color: var(--text); }
.donate-body { padding: 36px 32px 28px; text-align: center; }
.donate-coffee { font-size: 36px; margin-bottom: 12px; display: block; }
.donate-body h3 {
  font-size: 20px; font-weight: 600;
  letter-spacing: -.02em; margin: 0 0 8px;
  color: var(--text);
}
.donate-desc {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.6; margin: 0 0 24px;
}
.amount-grid {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 8px; margin-bottom: 16px;
}
.amount-btn {
  padding: 10px 0;
  border: 1.5px solid #E4E4E7; border-radius: 8px;
  background: #fff; font-family: inherit;
  font-size: 14px; font-weight: 500; color: #18181B;
  cursor: pointer; transition: all .15s;
}
.amount-btn:hover { border-color: #18181B; color: #18181B; background: #F4F4F5; }
.amount-btn.selected { border-color: #18181B; background: #18181B; color: #fff; }
.custom-input {
  width: 100%; padding: 10px 14px;
  border: 1.5px solid #E4E4E7; border-radius: 8px;
  font-family: inherit; font-size: 14px;
  color: #18181B; background: #fff;
  margin-bottom: 16px; outline: none;
  transition: border-color .15s;
}
.custom-input:focus { border-color: #18181B; }
.custom-input.hidden { display: none !important; }
.btn-kofi {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 13px 20px;
  background: #29ABE0; color: #fff;
  border: none; border-radius: 8px;
  font-family: inherit; font-size: 15px; font-weight: 600;
  cursor: pointer; text-decoration: none;
  transition: background .15s, transform .15s;
  margin-top: 8px; margin-bottom: 12px;
}
.btn-kofi:hover { background: #22A0D5; transform: translateY(-1px); text-decoration: none; }
.btn-kofi:active { transform: translateY(0); }
.donate-note { font-size: 12px; color: #9CA3AF; margin: 0; }

/* Dark mode: modals need a lighter surface so they visually pop from the
   near-black dimmed backdrop (--surface alone is too close in luminance). */
[data-theme="dark"] .modal-card {
  background: #1E2740;
  border-color: var(--border-hover);
  box-shadow: 0 24px 60px rgba(0,0,0,.55), 0 2px 6px rgba(0,0,0,.3);
}
[data-theme="dark"] .modal-icon-warn {
  background: rgba(245, 158, 11, 0.15);
  color: #FCD34D;
}
[data-theme="dark"] .modal-actions {
  border-top-color: var(--border-hover);
}

/* Dark mode tweaks for donation modal */
[data-theme="dark"] .donate-close:hover { background: rgba(255,255,255,.06); }
[data-theme="dark"] .btn-kofi { color: #fff; }
[data-theme="dark"] .btn-kofi:hover { color: #fff; }
[data-theme="dark"] .donate-tip-dismiss {
  background: rgba(255,255,255,.06);
  border-color: var(--border-hover);
  color: var(--text);
}
[data-theme="dark"] .amount-btn {
  background: var(--surface); color: var(--text); border-color: var(--border);
}
[data-theme="dark"] .amount-btn:hover {
  background: #1E2333; color: var(--text); border-color: var(--border-hover);
}
[data-theme="dark"] .amount-btn.selected {
  background: var(--text); color: var(--bg); border-color: var(--text);
}
[data-theme="dark"] .custom-input {
  background: var(--surface); color: var(--text); border-color: var(--border);
}
[data-theme="dark"] .custom-input:focus { border-color: var(--accent); }

/* ─── Post-export donation tip ─────────────────────────────── */
.donate-tip { max-width: 380px; padding: 0; position: relative; }
.donate-tip-body { padding: 30px 26px 20px; text-align: center; }
.donate-tip-check {
  display: inline-flex;
  margin-bottom: 14px;
  animation: donate-tip-pop 360ms cubic-bezier(.34,1.56,.64,1) both;
}
@keyframes donate-tip-pop {
  0%   { transform: scale(.4); opacity: 0; }
  100% { transform: scale(1);  opacity: 1; }
}
.donate-tip-body h3 {
  margin: 0 0 6px;
  font-size: 17px; font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}
.donate-tip-desc {
  margin: 0 0 18px;
  font-size: 13.5px; line-height: 1.5;
  color: var(--text-muted);
}
.donate-tip-actions {
  display: flex; flex-direction: column; gap: 8px;
  margin-bottom: 14px;
}
.donate-tip-kofi { margin: 0; padding: 11px 18px; font-size: 14px; }
.donate-tip-dismiss {
  width: 100%; padding: 10px 18px;
  font-size: 13px; font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s, color .15s, border-color .15s;
}
.donate-tip-dismiss:hover { background: rgba(0,0,0,.04); color: var(--text); border-color: var(--border-hover); }
[data-theme="dark"] .donate-tip-dismiss:hover { background: rgba(255,255,255,.05); }
.donate-tip-never {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 12px; color: var(--text-muted);
  cursor: pointer; user-select: none;
}
.donate-tip-never input { width: 13px; height: 13px; cursor: pointer; accent-color: var(--accent); }

/* ─── Footer ───────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 18px 0 28px;
  margin-top: auto;
}
body.editor-active .site-footer { padding: 6px 0 6px; }
body.editor-active .footer-credit { font-size: 10px; line-height: 1.25; }
body.editor-active .footer-version { display: none; }
.footer-inner {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.footer-copy { font-size: 12px; color: var(--text-muted); text-align: center; }
.footer-credit {
  margin: 0; font-size: 11px; color: var(--text-muted); text-align: center;
  max-width: 640px;
}
.footer-credit a { color: var(--text-muted); text-decoration: underline; }
.footer-credit a:hover { color: var(--text); }
.footer-version {
  margin: 0; font-size: 10px; text-align: center; color: #D1D5DB;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .02em;
}
.footer-link-btn {
  background: none; border: 0; padding: 0; margin: 0;
  color: var(--accent); font: inherit; font-size: inherit;
  text-decoration: underline; cursor: pointer;
}
.footer-link-btn:hover { color: var(--accent-hover); }

/* ─── Terms & Services Modal (Scandinavian minimal) ──────────── */
.terms-modal {
  position: relative;
  max-width: 480px;
  padding: 40px 40px 28px;
  border-radius: 18px;
  text-align: left;
  box-shadow: 0 30px 80px rgba(17, 24, 39, .16), 0 2px 8px rgba(17, 24, 39, .04);
}
.terms-close {
  position: absolute; top: 18px; right: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%;
  background: none; border: 0; color: var(--text-muted); cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.terms-close:hover { background: var(--bg); color: var(--text); }

.terms-head { margin-bottom: 26px; }
.terms-eyebrow {
  display: block;
  font-size: 11px; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; color: var(--text-muted);
  margin-bottom: 12px;
}
.terms-title {
  margin: 0 0 8px;
  font-size: 22px; font-weight: 600; letter-spacing: -0.02em;
  line-height: 1.25; color: var(--text);
}
.terms-lede {
  margin: 0;
  font-size: 13.5px; line-height: 1.6; color: var(--text-muted);
  max-width: 38ch;
}

.terms-grid { margin: 0; padding: 0; }
.terms-row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding: 15px 0;
  border-top: 1px solid var(--border);
}
.terms-row dt {
  font-size: 11px; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; color: var(--text-muted);
  padding-top: 2px;
}
.terms-row dd {
  margin: 0;
  font-size: 13.5px; line-height: 1.6; color: var(--text);
}
.terms-row dd strong { font-weight: 600; }
.terms-row dd a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--border-hover); }
.terms-row dd a:hover { color: var(--accent-hover); border-bottom-color: var(--accent); }

.terms-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  margin-top: 26px; padding-top: 20px;
  border-top: 1px solid var(--border);
}
.terms-foot-text { font-size: 12.5px; color: var(--text-muted); line-height: 1.5; }
.terms-support-btn {
  flex-shrink: 0;
  padding: 9px 18px; border-radius: 10px;
  background: var(--text); color: var(--surface);
  border: 0; font-size: 13px; font-weight: 500; cursor: pointer;
  transition: opacity .15s ease, transform .15s ease;
}
.terms-support-btn:hover { opacity: .88; }
.terms-support-btn:active { transform: translateY(1px); }

@media (max-width: 520px) {
  .terms-modal { padding: 32px 24px 22px; }
  .terms-row { grid-template-columns: 1fr; gap: 4px; }
  .terms-foot { flex-direction: column; align-items: flex-start; }
}


/* ─── Report Bug Modal ───────────────────────────────────────── */
.report-modal { max-width: 560px; padding: 0; }
.report-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 16px 16px 20px;
  border-bottom: 1px solid var(--border);
}
.report-modal-title-wrap { display: flex; align-items: center; gap: 10px; min-width: 0; }
.report-modal-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--accent-soft); color: var(--accent); font-size: 16px;
  flex-shrink: 0;
}
.report-modal-title {
  margin: 0; font-size: 15px; font-weight: 600; color: var(--text);
  letter-spacing: -.01em; line-height: 1.3;
}
.report-modal-close {
  background: transparent; border: 0; cursor: pointer; padding: 6px;
  color: var(--text-muted); border-radius: 6px;
  display: inline-flex; align-items: center; justify-content: center;
}
.report-modal-close:hover { background: var(--accent-soft); color: var(--text); }
.report-modal-body { padding: 18px 20px 20px; }
.report-modal-desc {
  margin: 0 0 14px; font-size: 13px; color: var(--text-muted); line-height: 1.55;
}
.report-modal-desc strong { color: var(--text); font-weight: 600; }
.report-textarea {
  width: 100%; box-sizing: border-box;
  min-height: 240px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px; line-height: 1.55;
  color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; resize: vertical; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.report-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.report-modal-actions {
  display: flex; align-items: center; gap: 8px;
  margin-top: 14px; flex-wrap: wrap;
}
.btn-report {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 14px; border-radius: 8px;
  font-family: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer; text-decoration: none;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s, transform .1s;
}
.btn-report:active { transform: translateY(1px); }
.btn-report-primary {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.btn-report-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
[data-theme="dark"] .btn-report-primary { color: #0B0F1A; }
[data-theme="dark"] .btn-report-primary:hover { color: #0B0F1A; }
.btn-report-secondary {
  background: var(--surface); color: var(--text); border-color: var(--border);
}
.btn-report-secondary:hover { background: var(--accent-soft); border-color: var(--border-hover); }
.report-copied {
  margin-left: auto;
  font-size: 12px; color: var(--green); font-weight: 500;
  opacity: 0; transform: translateY(2px);
  transition: opacity .15s, transform .15s;
  pointer-events: none;
}
.report-copied.is-visible { opacity: 1; transform: translateY(0); }
@media (max-width: 520px) {
  .report-modal { max-width: 100%; }
  .report-copied { margin-left: 0; flex-basis: 100%; }
}