:root {
  --bg: #0f1115;
  --surface: #1a1d24;
  --border: #2a2f3a;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #c9a227;
  --accent-hover: #dbb52e;
  --danger: #c44;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}
.logo:hover { color: var(--text); }
.logo-img {
  display: block;
  width: 32px;
  height: 32px;
  object-fit: contain;
  border-radius: 4px;
}
.site-header nav a { margin-left: 1rem; }

.site-main { padding: 1.5rem; max-width: 1800px; margin: 0 auto; }

.hero { text-align: center; padding: 4rem 1rem; }
.hero h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.hero .btn-primary { margin-bottom: 2rem; }
.hero-logo {
  display: block;
  width: min(200px, 70vw);
  height: auto;
  margin: 0 auto;
  object-fit: contain;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 0.95rem;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #111;
  font-weight: 600;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-sm { padding: 0.25rem 0.55rem; font-size: 0.82rem; }
.btn-danger { border-color: var(--danger); color: var(--danger); }

.muted { color: var(--muted); }
.error { color: #f88; background: #3a1a1a; padding: 0.5rem 1rem; border-radius: 6px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  color: inherit;
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--accent); }
.card img { width: 100%; height: 180px; object-fit: cover; display: block; }
.card-placeholder {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #252830;
  font-size: 2rem;
  color: var(--muted);
}
.card-body { padding: 1rem; }
.card-body h2 { margin: 0 0 0.35rem; font-size: 1.1rem; }
.card-body p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.viewer-workspace {
  width: 100%;
}

.viewer-workspace:fullscreen,
.viewer-workspace:-webkit-full-screen {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  padding: 0.5rem 0.75rem;
  overflow: hidden;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
}

.viewer-workspace:fullscreen .viewer-layout,
.viewer-workspace:-webkit-full-screen .viewer-layout {
  flex: 1;
  min-height: 0;
  height: auto;
  align-items: stretch;
}

.viewer-workspace:fullscreen .viewer-main,
.viewer-workspace:-webkit-full-screen .viewer-main {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.viewer-workspace:fullscreen #tab-3d.viewer-tab-panel.active,
.viewer-workspace:-webkit-full-screen #tab-3d.viewer-tab-panel.active {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.viewer-workspace:fullscreen .viewer-canvas,
.viewer-workspace:-webkit-full-screen .viewer-canvas {
  flex: 1 1 auto;
  height: auto !important;
  min-height: 0;
  max-height: none;
}

.viewer-workspace:fullscreen .viewer-sidebar,
.viewer-workspace:-webkit-full-screen .viewer-sidebar {
  max-height: none;
  overflow-y: auto;
}

.viewer-workspace:fullscreen .viewer-hint,
.viewer-workspace:-webkit-full-screen .viewer-hint {
  display: none;
}

/* Планшет / touch: единый layout как в портретном полноэкране (3D сверху на всю ширину) */
@media (max-width: 1100px), (pointer: coarse) {
  .site-main:has(.viewer-workspace) {
    padding: 0.35rem 0.5rem;
    padding-left: max(0.5rem, env(safe-area-inset-left));
    padding-right: max(0.5rem, env(safe-area-inset-right));
    max-width: none;
    width: 100%;
  }

  .viewer-workspace {
    width: 100%;
    max-width: none;
  }

  .viewer-workspace .viewer-layout {
    display: flex;
    flex-direction: column;
    grid-template-columns: none !important;
    gap: 0.45rem;
    min-height: 0;
  }

  .viewer-workspace .viewer-main {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    min-height: 0;
    order: 1;
    width: 100%;
  }

  .viewer-workspace .viewer-sidebar {
    flex: 0 0 auto;
    width: 100%;
    max-width: none;
    order: 2;
    max-height: min(38dvh, 320px);
    overflow-y: auto;
  }

  .viewer-workspace #tab-3d.viewer-tab-panel.active {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
  }

  .viewer-workspace .viewer-canvas {
    width: 100%;
    max-width: none;
    max-height: none !important;
    flex: 1 1 auto;
    min-height: min(44dvh, 440px);
  }

  .viewer-workspace .lustre-desc {
    display: none;
  }

  .viewer-workspace:fullscreen,
  .viewer-workspace:-webkit-full-screen {
    padding: 0.25rem 0.35rem;
    padding-left: max(0.35rem, env(safe-area-inset-left));
    padding-right: max(0.35rem, env(safe-area-inset-right));
  }

  .viewer-workspace:fullscreen .viewer-layout,
  .viewer-workspace:-webkit-full-screen .viewer-layout {
    flex: 1;
    min-height: 0;
  }

  .viewer-workspace:fullscreen .viewer-main,
  .viewer-workspace:-webkit-full-screen .viewer-main {
    flex: 1 1 0;
    min-height: 0;
  }

  .viewer-workspace:fullscreen .viewer-sidebar,
  .viewer-workspace:-webkit-full-screen .viewer-sidebar {
    max-height: min(34dvh, 300px);
  }

  .viewer-workspace:fullscreen .viewer-canvas,
  .viewer-workspace:-webkit-full-screen .viewer-canvas {
    flex: 1 1 0;
    min-height: 0;
  }
}

/* Планшет альбом: больше высоты под 3D, компактнее панель снизу */
@media (pointer: coarse) and (orientation: landscape) {
  .viewer-workspace .viewer-canvas {
    min-height: min(62dvh, 520px);
  }

  .viewer-workspace .viewer-sidebar {
    max-height: min(30dvh, 220px);
  }

  .viewer-workspace:fullscreen .viewer-canvas,
  .viewer-workspace:-webkit-full-screen .viewer-canvas {
    min-height: min(68dvh, 560px);
  }

  .viewer-workspace:fullscreen .viewer-sidebar,
  .viewer-workspace:-webkit-full-screen .viewer-sidebar {
    max-height: min(26dvh, 200px);
  }
}

body.viewer-fullscreen-active .site-header {
  display: none;
}

body.viewer-fullscreen-active .site-main {
  padding: 0.5rem;
  max-width: none;
}

.viewer-fs-btn {
  margin-left: auto;
  min-height: 2.5rem;
  touch-action: manipulation;
}

.viewer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 1rem;
  min-height: min(82vh, 100%);
  align-items: stretch;
}

@media (max-width: 1100px) {
  .viewer-toolbar h1 {
    font-size: 1.15rem;
    flex: 1;
    min-width: 0;
  }

  .viewer-tabs button {
    min-height: 2.75rem;
    padding: 0.55rem 1rem;
    font-size: 1rem;
    touch-action: manipulation;
  }

  .assembly-row .btn,
  .assembly-row input[type="range"] {
    min-height: 2.75rem;
  }

  .assembly-row input[type="range"] {
    height: 2rem;
  }

  .parts-panel label {
    padding: 0.5rem 0;
    font-size: 0.95rem;
    min-height: 2.5rem;
  }

  .tree-row {
    padding: 0.35rem 0;
    min-height: 2.25rem;
  }

  .viewer-hint {
    display: none;
  }

  .site-header {
    padding: 0.65rem 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .site-header nav a {
    margin-left: 0.65rem;
    padding: 0.35rem 0;
    min-height: 2.25rem;
    display: inline-flex;
    align-items: center;
  }

  .site-main {
    padding: 0.75rem;
  }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

  .card img, .card-placeholder {
    height: 150px;
  }
}

/* Узкое окно на десктопе (мышь): альбом — две колонки */
@media (max-width: 900px) and (orientation: landscape) and (pointer: fine) {
  .viewer-workspace .viewer-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, 36%);
    align-items: start;
  }

  .viewer-workspace .viewer-main,
  .viewer-workspace .viewer-sidebar {
    order: unset;
    width: auto;
  }

  .viewer-workspace .viewer-canvas {
    height: min(72dvh, 520px);
    min-height: 240px;
  }

  .viewer-workspace .viewer-sidebar {
    max-height: 72dvh;
  }
}

.viewer-toolbar { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.viewer-toolbar h1 { margin: 0; font-size: 1.35rem; }
.back-link { font-size: 0.9rem; }
.lustre-desc { color: var(--muted); margin: 0.25rem 0 0.75rem; }

.viewer-main {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

#tab-3d.viewer-tab-panel.active {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.viewer-canvas {
  width: 100%;
  flex: 1 1 auto;
  height: min(72vh, 860px);
  min-height: 320px;
  background: #181b22;
  border: 1px solid var(--border);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.viewer-load-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: rgba(15, 17, 21, 0.82);
  pointer-events: none;
  transition: opacity 0.2s;
}

.viewer-load-overlay.hidden {
  opacity: 0;
  visibility: hidden;
}

.viewer-load-text { font-size: 1rem; }
.viewer-load-progress { font-size: 0.85rem; }

.viewer-label-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.viewer-label-layer * {
  pointer-events: none;
}

.plate-label-3d {
  font-family: "Segoe UI", system-ui, sans-serif;
  font-weight: 700;
  white-space: nowrap;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9), 0 0 8px rgba(0, 0, 0, 0.6);
  transform: translate(-50%, -50%);
}

.plate-label-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.05rem;
  padding: 0.1rem 0.25rem;
  text-align: center;
}

.plate-label-title { font-size: 1rem; color: #f0f0f0; }
.plate-label-counts { display: flex; gap: 0.25rem; justify-content: center; }
.plate-label-bolt { font-size: 1.15rem; line-height: 1; }
.plate-label-bolt.plus { color: #e53935; }
.plate-label-bolt.minus { color: #2196f3; }

.plate-contacts-row {
  display: flex;
  gap: 1.25rem;
  margin: 0.5rem 0 0.75rem;
}

.plate-contacts-group-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0.35rem 0;
  font-size: 0.9rem;
}

.plate-contacts-group-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.plate-bolt-badge { font-size: 1.35rem; font-weight: 700; line-height: 1; }
.plate-bolt-badge.plus { color: #e53935; }
.plate-bolt-badge.minus { color: #2196f3; }

.viewer-canvas canvas { display: block; width: 100% !important; height: 100% !important; touch-action: none; }
.viewer-hint { font-size: 0.8rem; color: var(--muted); margin-top: 0.5rem; }

.viewer-sidebar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  max-height: 82vh;
  overflow-y: auto;
}

.viewer-sidebar h2 { margin: 0 0 0.75rem; font-size: 1rem; }

.assembly-panel {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.assembly-panel.assembly-off {
  opacity: 0.72;
}
.assembly-panel.assembly-off input[type="range"]:disabled,
.assembly-panel.assembly-off button:disabled {
  cursor: not-allowed;
}

.assembly-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.assembly-row input[type="range"] { flex: 1; min-width: 0; }
.assembly-step { font-size: 0.82rem; margin: 0 0 0.5rem; }
.assembly-hint { font-size: 0.78rem; margin: 0.5rem 0 0; }

.assembly-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}
.assembly-panel-head h3 { margin: 0; font-size: 0.95rem; }
.assembly-panel-badge {
  font-size: 0.68rem;
  padding: 0.12rem 0.35rem;
  border-radius: 999px;
  background: rgba(201, 162, 39, 0.12);
  color: #d8b84d;
  border: 1px solid rgba(201, 162, 39, 0.35);
  white-space: nowrap;
}

.assembly-diagnostics-panel {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}
.assembly-diagnostics-panel[hidden] { display: none; }
.assembly-diagnostics-body {
  font-size: 0.8rem;
  line-height: 1.35;
}
.assembly-diagnostics-body p,
.assembly-diagnostics-note { margin: 0.35rem 0; }
.assembly-diagnostics-body ul {
  margin: 0.35rem 0 0.35rem 1rem;
  padding: 0;
}
.assembly-diagnostics-body code { font-size: 0.75rem; }
.assembly-diagnostics-ok { color: #8fd18f; }
.assembly-diagnostics-warn { color: #e6c05c; }
.assembly-diagnostics-step {
  display: flex;
  align-items: flex-start;
  gap: 0.35rem;
}
.assembly-diagnostics-step button { flex-shrink: 0; }
.assembly-diagnostics-note { font-size: 0.78rem; }

.assembly-step-card {
  margin: 0.5rem 0 0.75rem;
  padding: 0.7rem;
  border: 1px solid rgba(201, 162, 39, 0.28);
  border-radius: 8px;
  background: rgba(201, 162, 39, 0.06);
}
.assembly-step-head {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  align-items: flex-start;
}
.assembly-step-head h4 {
  margin: 0.05rem 0 0;
  font-size: 0.95rem;
}
.assembly-step-eyebrow,
.assembly-step-summary,
.assembly-step-review {
  margin: 0.25rem 0;
}
.assembly-step-eyebrow {
  color: #d8b84d;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.assembly-step-counter {
  flex-shrink: 0;
  color: #d8b84d;
  font-size: 0.78rem;
}
.assembly-step-facts {
  display: grid;
  gap: 0.25rem;
  margin: 0.5rem 0;
}
.assembly-step-facts div {
  display: grid;
  grid-template-columns: 4.4rem minmax(0, 1fr);
  gap: 0.35rem;
}
.assembly-step-facts dt { color: var(--muted); }
.assembly-step-facts dd { margin: 0; }
.assembly-step-items {
  margin: 0.45rem 0 0.55rem 1.1rem;
  padding: 0;
}
.assembly-step-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.assembly-step-review {
  color: var(--muted);
  font-size: 0.75rem;
}

.badge-assembled {
  display: inline-block;
  font-size: 0.78rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: #3a3f48;
  color: #aab0bb;
  margin: 0.25rem 0;
}
.badge-active {
  display: inline-block;
  font-size: 0.78rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: #1e3a5f;
  color: #7eb8ff;
  margin: 0.25rem 0;
}

.tree-row.assembled { opacity: 0.6; }
.tree-row.assembled.selected { opacity: 1; }
.tree-row.in-focus { background: rgba(61, 125, 214, 0.08); border-radius: 4px; }
.tree-row.focus-dim { opacity: 0.45; }
.tree-row.selected { opacity: 1; }

.part-info {
  padding: 0.75rem;
  background: #252830;
  border-radius: 8px;
  margin-bottom: 1rem;
  min-height: 4rem;
}
.part-info.active { border: 1px solid var(--accent); }
.part-info h3 { margin: 0 0 0.35rem; font-size: 1rem; }

.parts-panel .group-block {
  margin-bottom: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}
.parts-panel .group-block:first-child { border-top: none; padding-top: 0; }
.parts-panel h3 { margin: 0 0 0.5rem; font-size: 0.9rem; }
.parts-panel label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.35rem 0;
  cursor: pointer;
  font-size: 0.88rem;
}
.parts-panel label:hover { color: var(--accent); }
.parts-panel label.selected { color: var(--accent); }
.parts-panel input { margin-top: 0.2rem; }

.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  max-width: 720px;
}
.form-card.narrow { max-width: 400px; margin: 2rem auto; }

label { display: block; margin-bottom: 1rem; }
label input[type="text"],
label input[type="password"],
label input[type="file"],
label textarea {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.5rem 0.65rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
}
textarea.mono { font-family: ui-monospace, monospace; font-size: 0.85rem; }

.form-actions { display: flex; gap: 0.75rem; margin-top: 1rem; }
.danger-zone { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--border); }

.admin-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.admin-table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
.admin-table th, .admin-table td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
.admin-table code { font-size: 0.85rem; }

.help { margin: 1rem 0; }
.help pre {
  background: var(--bg);
  padding: 0.75rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.8rem;
}

.form-wide { max-width: 820px; }
.inline-check { display: inline-flex; align-items: center; gap: 0.4rem; margin-top: 0.5rem; font-size: 0.9rem; }
.inline-form { display: inline; margin: 0; }
.btn-link {
  background: none; border: none; color: var(--accent); cursor: pointer;
  font: inherit; padding: 0; margin-left: 0.5rem;
}
.btn-link:hover { color: var(--accent-hover); }
.nav-user { margin-left: 1rem; font-size: 0.9rem; }

.data-table { width: 100%; border-collapse: collapse; margin: 0.75rem 0 1.5rem; }
.data-table th, .data-table td {
  text-align: left; padding: 0.55rem 0.65rem; border-bottom: 1px solid var(--border);
}
.row-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.plain-list { list-style: none; padding: 0; }
.plain-list li { padding: 0.25rem 0; }
.admin-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }

.viewer-tabs { display: flex; gap: 0.5rem; margin: 0.75rem 0; }
.viewer-tabs button {
  padding: 0.4rem 0.85rem; border-radius: 6px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); cursor: pointer;
}
.viewer-tabs button.active { border-color: var(--accent); color: var(--accent); }
.viewer-tab-panel { display: none; }
.viewer-tab-panel.active { display: block; }
.viewer-tab-panel img, .viewer-tab-panel iframe {
  max-width: 100%; border-radius: 8px; border: 1px solid var(--border);
}
.scheme-img { width: 100%; max-height: 70vh; object-fit: contain; background: #111; }

.layer-render-panel { padding: 0.25rem 0 1rem; }
.layer-render-hint { margin: 0 0 1rem; font-size: 0.9rem; }
.layer-render-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.layer-render-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: #111;
}
.layer-render-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #0a0a0a;
}
.layer-render-card-meta {
  padding: 0.65rem 0.75rem;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.layer-render-card-actions { display: flex; flex-wrap: wrap; gap: 0.35rem; }

.settings-page { max-width: 32rem; }
.settings-tab-inner { max-width: 28rem; padding: 0.5rem 0 1rem; }
.settings-tab-inner h2 { margin: 0 0 0.5rem; font-size: 1.1rem; }

.settings-form { margin-top: 1rem; }
.settings-fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin: 0;
}
.settings-fieldset legend { padding: 0 0.35rem; color: var(--muted); font-size: 0.85rem; }
.settings-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
}
.settings-label input[type="color"] {
  width: 3rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
}
.settings-range-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
}
.settings-range-row input[type="range"] { flex: 1; }
.settings-range-row output { min-width: 2.5rem; text-align: right; font-size: 0.85rem; color: var(--muted); }
.settings-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  cursor: pointer;
}
label.settings-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
label.settings-disabled input {
  cursor: not-allowed;
}
.settings-hint { font-size: 0.82rem; margin: 0.75rem 0 0; }
.settings-subhint { font-size: 0.78rem; margin: 0.35rem 0 0; line-height: 1.35; }
.settings-defaults-badge {
  font-size: 0.88rem;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  background: #2a3340;
  border: 1px solid var(--accent);
  margin: 0.75rem 0;
}
.badge-defaults {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.1rem 0.4rem;
  margin-left: 0.35rem;
  border-radius: 4px;
  background: #2a3340;
  color: var(--accent);
}

.tree-node { margin-left: 0; }
.tree-children { margin-left: 1rem; border-left: 1px solid var(--border); padding-left: 0.5rem; }
.tree-row {
  display: flex; align-items: center; gap: 0.35rem; padding: 0.2rem 0;
  font-size: 0.86rem; cursor: pointer;
}
.tree-row:hover { color: var(--accent); }
.tree-row.selected { color: var(--accent); }
.tree-toggle {
  width: 1rem; text-align: center; color: var(--muted); cursor: pointer;
  user-select: none; flex-shrink: 0;
}
.tree-row-mesh { font-size: 0.82rem; }
.tree-row-mesh .tree-type { min-width: 2rem; }

.btn-assembly-toggle {
  padding: 0.45rem 0.75rem;
  font-size: 0.95rem;
  font-weight: 700;
}

/* Основное действие сборщика — заметная, но не кричащая */
.btn-assembly-mark {
  background: #b8921f;
  border-color: #9a7a18;
  color: #141008;
}
.btn-assembly-mark:hover:not(:disabled) {
  background: #c9a227;
  border-color: #b8921f;
}
.btn-assembly-mark:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

/* Рендер слоя — вторичное действие, спокойный серый */
.btn-layer-render {
  background: #3a424d;
  border-color: #525c6a;
  color: #e6e8eb;
  font-weight: 500;
}
.btn-layer-render:hover {
  background: #4a5562;
  border-color: #636f7f;
  color: #f2f4f6;
}

.assembly-progress-actions {
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.assembly-render-actions {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.connection-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  padding: 0.25rem 0 1rem;
}
.connection-card {
  margin: 0;
  padding: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.connection-card img {
  display: block;
  width: 100%;
  max-height: 72vh;
  object-fit: contain;
  background: #111;
}
.connection-card figcaption {
  margin-top: 0.5rem;
  font-size: 0.85rem;
}
.spec-html-frame {
  min-height: 72vh;
  background: #fff;
}
.part-material {
  margin: 0.5rem 0;
}

.spec-table-wrap {
  max-width: 100%;
  overflow: auto;
  padding: 0.75rem;
  background: #f8f8f8;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.spec-table {
  width: max-content;
  min-width: min(100%, 520px);
  border-collapse: collapse;
  color: #111;
  background: #fff;
  font-size: 1rem;
}
.spec-table th,
.spec-table td {
  padding: 0.45rem 0.75rem;
  border: 1px solid #222;
  text-align: center;
  vertical-align: middle;
  white-space: nowrap;
}
.spec-table th {
  font-weight: 700;
  background: #f2f2f2;
}
.spec-table td:nth-child(2),
.spec-table th:nth-child(2) {
  text-align: left;
}
.spec-download-hint {
  margin-top: 0.5rem;
  font-size: 0.85rem;
}