:root {
  --bg: #14161a;
  --panel: #1d2026;
  --panel-2: #262a32;
  --accent: #d99b52;
  --text: #eae6df;
  --text-dim: #9aa0aa;
  --border: #33383f;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 24px 32px 8px;
  text-align: center;
}
header h1 {
  margin: 0;
  font-size: 2.2rem;
  letter-spacing: 1px;
  color: var(--accent);
}
.tagline { color: var(--text-dim); margin-top: 4px; }

main {
  flex: 1;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  padding: 16px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
}
.hidden { display: none !important; }

/* Wizard */
#wizard-steps { display: flex; flex-direction: column; gap: 14px; }
.wizard-question { display: flex; flex-direction: column; gap: 8px; }
.wizard-question label { font-weight: 600; color: var(--accent); }
.wizard-question .hint { color: var(--text-dim); font-size: 0.85rem; }
.wizard-question input, .wizard-question textarea {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
}
.wizard-question textarea { min-height: 70px; resize: vertical; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
}
.chip:hover { border-color: var(--accent); }
.chip.selected { background: var(--accent); color: #1a1a1a; border-color: var(--accent); }

.wizard-nav { display: flex; justify-content: space-between; margin-top: 6px; }
button {
  background: var(--accent);
  color: #1a1a1a;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
}
button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
button:disabled { opacity: 0.4; cursor: not-allowed; }

#loading-row { display: flex; align-items: center; gap: 10px; color: var(--text-dim); }
.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Mock-up / plan summary (shown before committing to the 3D build, and again in the revise panel) */
.mockup-summary {
  background: var(--panel-2);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 12px 16px;
  margin: 4px 0;
}
.mockup-summary .mockup-title { color: var(--accent); font-weight: 600; margin-bottom: 6px; display: block; }
.mockup-summary ul { margin: 0; padding-left: 18px; }
.mockup-summary li { font-size: 0.88rem; margin: 3px 0; color: var(--text); }

/* Viewer */
#viewer-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
#viewer-title { color: var(--text-dim); font-size: 0.9rem; }
#viewer {
  width: 100%;
  height: 480px;
  border-radius: 8px;
  overflow: hidden;
  background: #0c0d10;
  position: relative;
}
#viewer canvas { display: block; }

#info-panel {
  position: absolute;
  top: 60px; right: 24px;
  width: 300px;
  background: rgba(29, 32, 38, 0.97);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 16px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}
#info-close {
  position: absolute; top: 6px; right: 8px;
  background: transparent; color: var(--text-dim);
  font-size: 1.2rem; padding: 0 6px;
}
#info-content h3 { margin: 0 0 8px; color: var(--accent); }
#info-content .row { margin: 4px 0; font-size: 0.9rem; }
#info-content .row b { color: var(--text); }
#info-content .note { color: var(--text-dim); font-size: 0.85rem; margin-top: 8px; }

/* Revise panel */
#revise-wrap h2 { margin-top: 0; color: var(--accent); font-size: 1.1rem; }
.revise-columns {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  margin-top: 10px;
}
.revise-col { display: flex; flex-direction: column; gap: 8px; }
.revise-col > label { font-weight: 600; color: var(--text); font-size: 0.9rem; }
.revise-col textarea {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 6px;
  font-family: inherit;
  min-height: 80px;
  resize: vertical;
}
#revise-status { min-height: 1.2em; }
#revise-status.error { color: #e06666; }
#revise-status.success { color: #7fbf7f; }
.manual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.manual-grid label {
  font-size: 0.8rem;
  color: var(--text-dim);
  display: block;
  margin-bottom: 2px;
}
.manual-grid input, .manual-grid select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px;
  border-radius: 6px;
  width: 100%;
  font-family: inherit;
}

/* Surfaces editor (uses-graph: variable list of surfaces per piece) */
.surfaces-editor { margin-top: 14px; }
.surfaces-editor > label { font-weight: 600; color: var(--text); font-size: 0.9rem; display: block; margin-bottom: 8px; }
.surface-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 8px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px;
  margin-bottom: 8px;
}
.surface-col { display: flex; flex-direction: column; gap: 2px; }
.surface-col-label { font-size: 0.7rem; color: var(--text-dim); }
.surface-row input, .surface-row select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 6px 8px;
  border-radius: 5px;
  font-family: inherit;
  font-size: 0.85rem;
}
.surface-row input[type="text"] { width: 90px; }
.surface-row input[type="number"] { width: 72px; }
.surface-row button.secondary { padding: 6px 10px; align-self: flex-end; }

#revision-history-row {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

@media (max-width: 700px) {
  .revise-columns { grid-template-columns: 1fr; }
}

/* Shopping list */
.note { color: var(--text-dim); font-size: 0.9rem; }
table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--accent); }
#raw-parts-details { margin-top: 18px; }
#raw-parts-details summary { cursor: pointer; color: var(--text-dim); }

footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  padding: 16px;
  border-top: 1px solid var(--border);
}

/* Groups editor (composable structural sections: post_frame / panel_frame) */
.groups-editor { margin-top: 10px; }
.group-editor {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 14px;
}
.group-editor-heading { font-weight: 700; color: var(--accent); margin-bottom: 8px; font-size: 0.95rem; }

/* ---- bring-your-own-key AI settings bar ---- */
#ai-settings { padding: 12px 18px; }
#ai-settings .hint { color: var(--text-dim); font-size: 0.8rem; margin: 6px 0 0; }
.ai-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; }
.ai-row label { font-size: 0.85rem; color: var(--accent); font-weight: 600; }
.ai-row select, .ai-row input {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 7px 9px; font-size: 0.9rem;
}
.ai-row input#ai-key { min-width: 260px; flex: 1; }
.ai-row input#ai-model { width: 170px; }
.ai-row button { padding: 7px 12px; font-size: 0.85rem; }
#ai-status.ok { color: #7fd48a; }
#ai-status.error { color: #e06666; }