/* ═══════════════════════════════════════
   CAD Companion V2 — AutoCAD 2023 replica theme
   ═══════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #1e1e1e;
  --bg-dark: #191919;
  --bg-darker: #141414;
  --surface: #2d2d2d;
  --surface2: #353535;
  --surface3: #3e3e3e;
  --border: #4a4a4a;
  --border-light: #555;
  --text: #d4d4d4;
  --text-muted: #999;
  --text-faint: #666;
  --accent: #4F98A3;
  --accent-hover: #5fb0bd;
  --accent-dim: rgba(79,152,163,0.15);
  --ribbon-bg: #2b2b2b;
  --ribbon-active: #3c3c3c;
  --danger: #e06c75;
  --success: #98c379;
  --warning: #e5c07b;
  --info: #61afef;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;
  --menubar-h: 22px;
  --ribbon-h: 28px;
  --ribbon-panel-h: 92px;
  --statusbar-h: 26px;
  --command-h: 64px;
  --panel-left-w: 220px;
}

html, body {
  height: 100%; overflow: hidden;
  background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: 12px;
  -webkit-font-smoothing: antialiased;
}

/* ─── CLASSIC MENU BAR ─── */
#menubar {
  height: var(--menubar-h); display: flex; align-items: center;
  background: var(--bg-dark); padding: 0 4px;
  border-bottom: 1px solid #333; user-select: none; gap: 0;
}
.menu-item {
  padding: 2px 8px; font-size: 11px; color: var(--text-muted);
  cursor: pointer; position: relative;
  border-radius: 2px;
}
.menu-item:hover, .menu-item.open { background: var(--surface2); color: var(--text); }

#menu-dropdowns { position: relative; z-index: 200; }
.menu-dropdown {
  display: none; position: absolute; top: 0; left: 0;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 3px; min-width: 220px; padding: 4px 0;
  box-shadow: 0 6px 20px rgba(0,0,0,0.5); z-index: 200;
}
.menu-dropdown.open { display: block; }
.menu-entry {
  padding: 4px 24px 4px 12px; font-size: 11px; color: var(--text);
  cursor: pointer; display: flex; justify-content: space-between; align-items: center;
}
.menu-entry:hover { background: var(--accent); color: #fff; }
.menu-entry.disabled { color: var(--text-faint); pointer-events: none; }
.menu-shortcut { font-size: 10px; color: var(--text-faint); margin-left: 16px; }
.menu-entry:hover .menu-shortcut { color: rgba(255,255,255,0.7); }
.menu-sep-line { height: 1px; background: var(--border); margin: 3px 8px; }

/* ─── RIBBON TABS ─── */
#ribbon {
  height: var(--ribbon-h); display: flex; align-items: center;
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border);
  user-select: none; padding: 0 4px;
}
.ribbon-tabs { display: flex; height: 100%; align-items: stretch; gap: 0; }
.ribbon-tab {
  padding: 0 10px; display: flex; align-items: center;
  font-size: 10px; font-weight: 500; color: var(--text-muted);
  cursor: pointer; border-bottom: 2px solid transparent;
  transition: all 80ms; white-space: nowrap;
}
.ribbon-tab:hover { color: var(--text); background: var(--surface); }
.ribbon-tab.active {
  color: var(--accent); border-bottom-color: var(--accent);
  background: var(--ribbon-bg);
}
.ribbon-title-area { margin-left: auto; display: flex; align-items: center; gap: 8px; padding-right: 8px; }
.ribbon-app-name { font-size: 10px; color: var(--text-faint); font-family: var(--mono); }
.ribbon-file-name { font-size: 10px; color: var(--text-muted); font-family: var(--mono); }

/* ─── RIBBON PANELS ─── */
#ribbon-panels {
  height: var(--ribbon-panel-h); background: var(--ribbon-bg);
  border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.ribbon-panel {
  display: none; height: 100%;
  padding: 2px 4px; align-items: stretch; gap: 0;
  overflow-x: auto;
}
.ribbon-panel.active { display: flex; }

.ribbon-group {
  display: flex; flex-direction: column;
  border-right: 1px solid var(--border);
  position: relative; min-width: 50px;
}
.ribbon-group-content {
  flex: 1; display: flex; align-items: center;
  padding: 2px 6px; gap: 2px;
}
.ribbon-group-label {
  height: 16px; display: flex; align-items: center; justify-content: center;
  font-size: 9px; color: var(--text-faint);
  text-transform: uppercase; letter-spacing: 0.04em;
  background: rgba(0,0,0,0.15); border-top: 1px solid rgba(255,255,255,0.04);
  white-space: nowrap;
}

/* Ribbon buttons */
.ribbon-btn {
  display: flex; align-items: center; gap: 3px;
  background: transparent; border: 1px solid transparent;
  border-radius: 2px; cursor: pointer;
  color: var(--text-muted); transition: all 80ms;
  font-family: var(--font); white-space: nowrap;
}
.ribbon-btn svg { flex-shrink: 0; }
.ribbon-btn span { font-size: 9px; }
.ribbon-btn:hover { background: var(--surface2); color: var(--text); border-color: var(--border); }
.ribbon-btn.active { background: var(--accent-dim); color: var(--accent); border-color: var(--accent); }

.ribbon-btn-lg {
  flex-direction: column; padding: 3px 8px; min-width: 44px;
  align-items: center; justify-content: center;
}
.ribbon-btn-sm { flex-direction: row; padding: 2px 6px; font-size: 9px; }
.ribbon-btn-icon {
  padding: 3px; width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid transparent;
  border-radius: 2px; cursor: pointer; color: var(--text-muted);
}
.ribbon-btn-icon:hover { background: var(--surface2); color: var(--text); border-color: var(--border); }

.ribbon-btn-row { display: flex; gap: 2px; }
.ribbon-btn-row-tight { display: flex; gap: 1px; }
.ribbon-btn-col { display: flex; flex-direction: column; gap: 1px; }

.ribbon-sep { width: 1px; height: 50px; background: var(--border); margin: 0 2px; }

/* Layer dropdown in ribbon */
.ribbon-layer-dropdown { min-width: 120px; }
#layer-select {
  width: 100%; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); font-family: var(--font); font-size: 10px;
  padding: 2px 4px; border-radius: 2px;
}
#layer-chips {
  display: flex; gap: 3px; flex-wrap: wrap; max-height: 32px; overflow: hidden;
}
.layer-chip {
  display: flex; align-items: center; gap: 3px;
  padding: 1px 6px; border-radius: 2px; font-size: 9px;
  background: var(--surface2); border: 1px solid var(--border);
  cursor: pointer; color: var(--text-muted);
}
.layer-chip.active { border-color: var(--accent); color: var(--accent); }
.layer-chip .layer-dot { width: 7px; height: 7px; border-radius: 50%; }
.layer-chip .layer-vis { font-size: 10px; cursor: pointer; opacity: 0.6; }
.layer-chip .layer-vis:hover { opacity: 1; }

/* ─── LAYER TABLE (AutoCAD-style) ─── */
.ribbon-group-layers { min-width: 260px; }
.ribbon-layers-content { flex-direction: column !important; align-items: stretch !important; gap: 2px !important; padding: 3px 4px !important; }
.ribbon-layers-toolbar {
  display: flex; gap: 3px; align-items: center;
}
.ribbon-layers-toolbar select {
  flex: 1; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); font-family: var(--font); font-size: 10px;
  padding: 2px 4px; border-radius: 2px; min-width: 100px;
}
#layer-table-wrap {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  border: 1px solid var(--border); border-radius: 2px;
  background: var(--bg-dark);
}
#layer-table {
  width: 100%; border-collapse: collapse;
  font-size: 9px; font-family: var(--font);
}
#layer-table thead th {
  background: var(--surface2); color: var(--text-faint);
  padding: 1px 4px; text-align: left; font-weight: 600;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 1;
  font-size: 8px; text-transform: uppercase; letter-spacing: 0.03em;
}
.lt-col-vis { width: 20px; text-align: center !important; }
.lt-col-color { width: 36px; text-align: center !important; }
.lt-col-name { }
.lt-col-lock { width: 20px; text-align: center !important; }
#layer-table tbody tr {
  cursor: pointer; transition: background 60ms;
}
#layer-table tbody tr:hover { background: var(--surface); }
#layer-table tbody tr.lt-active { background: var(--accent-dim); }
#layer-table tbody td {
  padding: 2px 4px; border-bottom: 1px solid rgba(255,255,255,0.04);
  white-space: nowrap; color: var(--text-muted);
}
#layer-table tbody td.lt-td-vis,
#layer-table tbody td.lt-td-lock {
  text-align: center; cursor: pointer; font-size: 10px;
  user-select: none;
}
#layer-table tbody td.lt-td-vis:hover,
#layer-table tbody td.lt-td-lock:hover { color: var(--text); }
.lt-color-swatch {
  display: inline-block; width: 14px; height: 10px;
  border-radius: 1px; border: 1px solid rgba(255,255,255,0.15);
  cursor: pointer; vertical-align: middle;
}
.lt-color-swatch:hover { border-color: var(--text); }
.lt-name-cell {
  max-width: 100px; overflow: hidden; text-overflow: ellipsis;
}
.lt-name-input {
  background: var(--bg); border: 1px solid var(--accent);
  color: var(--text); font-family: var(--font); font-size: 9px;
  padding: 0 3px; width: 100%; border-radius: 1px;
  outline: none;
}
/* Hidden color picker per row */
.lt-color-picker {
  position: absolute; opacity: 0; width: 0; height: 0;
  pointer-events: none;
}

.ribbon-color-row {
  display: flex; align-items: center; gap: 6px; padding: 1px 4px;
  font-size: 9px; white-space: nowrap;
}
.ribbon-prop-label { color: var(--text-faint); min-width: 55px; }
.ribbon-prop-value { color: var(--text-muted); font-family: var(--mono); font-size: 9px; }

.ribbon-placeholder {
  padding: 8px 12px; font-size: 10px; color: var(--text-faint);
  text-align: center; line-height: 1.4;
}
.ribbon-placeholder-sm {
  padding: 3px 8px; font-size: 9px; color: var(--text-faint);
  text-align: center; line-height: 1.3;
}
.ribbon-placeholder-sub { font-size: 8px; color: var(--border-light); }

/* ─── MAIN LAYOUT ─── */
#main {
  display: flex;
  height: calc(100vh - var(--menubar-h) - var(--ribbon-h) - var(--ribbon-panel-h) - var(--statusbar-h) - var(--command-h));
}

/* ─── PROPERTIES PANEL (LEFT) ─── */
#panel-left {
  width: var(--panel-left-w); background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto; flex-shrink: 0;
  display: flex; flex-direction: column;
}
#panel-left.hidden-panel { display: none; }
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 4px 8px; background: var(--bg-dark);
  border-bottom: 1px solid var(--border);
  font-size: 10px; font-weight: 600; color: var(--text-muted);
  letter-spacing: 0.06em;
}
.panel-header-btns { display: flex; gap: 2px; }
.panel-close-btn {
  background: none; border: none; color: var(--text-faint);
  cursor: pointer; font-size: 11px; padding: 1px 3px;
}
.panel-close-btn:hover { color: var(--danger); }
#props-content { flex: 1; overflow-y: auto; }

.prop-section { border-bottom: 1px solid var(--border); }
.prop-section-title {
  padding: 3px 8px; font-size: 10px; font-weight: 600;
  color: var(--text-muted); background: var(--bg-dark);
  cursor: pointer; user-select: none;
  display: flex; align-items: center; gap: 4px;
}
.prop-section-title::before {
  content: '▼'; font-size: 6px; transition: transform 100ms;
}
.prop-section-title.collapsed::before { transform: rotate(-90deg); }
.prop-section-body { padding: 2px 8px; }
.prop-section-title.collapsed + .prop-section-body { display: none; }

.prop-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 2px 0; font-size: 10px; min-height: 18px;
}
.prop-label { color: var(--text-muted); min-width: 70px; }
.prop-value { color: var(--text); font-family: var(--mono); font-size: 10px; text-align: right; }
.prop-empty { font-size: 10px; color: var(--text-faint); padding: 3px 0; }
.prop-slider-wrap { display: flex; align-items: center; gap: 4px; flex: 1; }
.prop-slider-wrap input[type="range"] { flex: 1; accent-color: var(--accent); height: 3px; }
.prop-slider-wrap span { font-family: var(--mono); font-size: 9px; color: var(--text-muted); min-width: 26px; text-align: right; }
#panel-left input[type="checkbox"] { accent-color: var(--accent); width: 13px; height: 13px; }
.prop-btn-danger {
  width: 100%; padding: 3px 8px; font-size: 9px; font-family: var(--font);
  background: transparent; border: 1px solid var(--danger); color: var(--danger);
  border-radius: 2px; cursor: pointer; transition: all 80ms;
}
.prop-btn-danger:hover { background: var(--danger); color: #fff; }

/* ─── CANVAS ─── */
#canvas-wrap { flex: 1; position: relative; overflow: hidden; background: #1a1a1a; }
#canvas-container { width: 100%; height: 100%; }

/* ─── DIALOGS ─── */
.dialog {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 3px; padding: 10px 14px; z-index: 100;
  min-width: 250px; box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.dialog.hidden { display: none; }
.dialog-title { font-weight: 600; font-size: 11px; margin-bottom: 6px; color: var(--text); }
.dialog p { font-size: 10px; color: var(--text-muted); margin-bottom: 6px; }
.dialog label { display: block; font-size: 10px; color: var(--text-muted); margin-bottom: 5px; }
.dialog input[type="number"], .dialog input[type="text"] {
  width: 100%; padding: 3px 6px; margin-top: 2px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 2px;
  color: var(--text); font-family: var(--mono); font-size: 11px;
}
.dialog input[type="color"] {
  width: 36px; height: 20px; border: 1px solid var(--border);
  border-radius: 2px; background: none; cursor: pointer; padding: 0;
  margin-top: 2px; vertical-align: middle;
}
.dialog input:focus { outline: none; border-color: var(--accent); }
.dialog select {
  width: 100%; padding: 3px 6px; margin-top: 2px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 2px;
  color: var(--text); font-family: var(--font); font-size: 10px;
}
.dialog-buttons { display: flex; gap: 4px; margin-top: 6px; }
.dialog button {
  padding: 3px 12px; border-radius: 2px; font-size: 10px;
  cursor: pointer; font-family: var(--font); border: none;
  background: var(--accent); color: #fff; transition: background 80ms;
}
.dialog button:hover { background: var(--accent-hover); }
.dialog .btn-ghost {
  background: transparent; color: var(--text-muted); border: 1px solid var(--border);
}
.dialog .btn-ghost:hover { border-color: var(--text-muted); }

/* ─── COMMAND LINE ─── */
#command-area {
  height: var(--command-h); background: var(--bg-dark);
  border-top: 1px solid var(--border);
  display: flex; flex-direction: column;
  font-family: var(--mono); font-size: 10px;
}
#command-history {
  flex: 1; overflow-y: auto; padding: 3px 8px;
  color: var(--text-muted); line-height: 1.5;
}
#command-history .cmd-line { white-space: pre-wrap; }
#command-history .cmd-info { color: var(--info); }
#command-history .cmd-warn { color: var(--warning); }
#command-history .cmd-ok { color: var(--success); }
#command-input-row {
  display: flex; align-items: center; gap: 4px;
  padding: 3px 8px; border-top: 1px solid var(--border);
  background: var(--bg);
}
.command-prefix { color: var(--text-faint); font-size: 10px; white-space: nowrap; }
#command-input {
  flex: 1; background: transparent; border: none;
  color: var(--text); font-family: var(--mono); font-size: 10px;
  outline: none;
}

/* ─── STATUS BAR (AutoCAD 2023) ─── */
#statusbar {
  height: var(--statusbar-h); display: flex; align-items: center;
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  font-size: 9px; font-family: var(--mono);
  color: var(--text-muted); user-select: none;
  gap: 0; padding: 0;
}
.flex-spacer { flex: 1; }

/* Layout tabs (left side of status bar) */
.sb-layout-tabs {
  display: flex; align-items: stretch; height: 100%; gap: 0;
}
.sb-layout-tab {
  padding: 0 12px; display: flex; align-items: center;
  font-size: 10px; color: var(--text-faint); cursor: pointer;
  border-right: 1px solid var(--border);
  transition: all 80ms; font-family: var(--font);
}
.sb-layout-tab:hover { color: var(--text); background: var(--surface); }
.sb-layout-tab.active { color: var(--text); background: var(--surface2); font-weight: 600; }
.sb-layout-add, .sb-layout-nav {
  width: 20px; display: flex; align-items: center; justify-content: center;
  background: transparent; border: none; border-right: 1px solid var(--border);
  color: var(--text-faint); cursor: pointer; font-size: 12px;
  font-family: var(--font);
}
.sb-layout-add:hover, .sb-layout-nav:hover { color: var(--accent); background: var(--surface); }

.sb-sep-v { width: 1px; height: 100%; background: var(--border); flex-shrink: 0; }

.sb-coords {
  padding: 0 10px; font-family: var(--mono); font-size: 9px;
  color: var(--text-muted); white-space: nowrap;
}

/* Toggle icons (right side) */
.sb-toggles {
  display: flex; align-items: center; height: 100%; gap: 0;
}
.sb-label {
  padding: 0 6px; font-size: 9px; font-weight: 600;
  color: var(--text-faint); font-family: var(--mono);
  border-left: 1px solid var(--border);
  height: 100%; display: flex; align-items: center;
}
.sb-toggle {
  width: 24px; height: 100%; display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-faint);
  transition: all 80ms; border-left: 1px solid rgba(255,255,255,0.03);
}
.sb-toggle:hover { background: var(--surface); color: var(--text); }
.sb-toggle.on { color: var(--accent); background: var(--accent-dim); }
.sb-toggle.sb-disabled { opacity: 0.35; cursor: default; }
.sb-toggle.sb-disabled:hover { background: transparent; color: var(--text-faint); }

.sb-info {
  padding: 0 6px; font-size: 8px; color: var(--text-faint);
  font-family: var(--mono); white-space: nowrap;
  height: 100%; display: flex; align-items: center;
}
#status-tool { color: var(--accent); font-weight: 600; }

/* ─── AI CAD GENERATOR PANEL ─── */
.aicad-panel {
  position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 520px; max-width: 90vw; max-height: 80vh;
  background: var(--bg-dark); border: 1px solid var(--border);
  border-radius: 4px; z-index: 300; display: flex; flex-direction: column;
  box-shadow: 0 12px 40px rgba(0,0,0,0.6);
}
.aicad-panel.hidden { display: none !important; }
.aicad-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; background: var(--surface); border-bottom: 1px solid var(--border);
  border-radius: 4px 4px 0 0;
}
.aicad-title { font-size: 11px; font-weight: 700; color: var(--text-muted); letter-spacing: 0.04em; }
.aicad-body { flex: 1; overflow-y: auto; padding: 0; }
.aicad-tabs { display: flex; border-bottom: 1px solid var(--border); }
.aicad-tab {
  flex: 1; padding: 8px; text-align: center; font-size: 11px; font-weight: 600;
  color: var(--text-faint); cursor: pointer; transition: all 80ms;
  border-bottom: 2px solid transparent;
}
.aicad-tab:hover { color: var(--text); background: var(--surface); }
.aicad-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.aicad-section { display: none; padding: 12px; }
.aicad-section.active { display: block; }
.aicad-textarea {
  width: 100%; padding: 8px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 3px; color: var(--text); font-family: var(--font); font-size: 11px;
  resize: vertical; min-height: 80px; outline: none;
}
.aicad-textarea:focus { border-color: var(--accent); }
.aicad-row { display: flex; gap: 8px; align-items: end; margin-top: 8px; }
.aicad-label { font-size: 10px; color: var(--text-muted); }
.aicad-select {
  padding: 4px 6px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 3px; color: var(--text); font-size: 10px; outline: none;
}
.aicad-btn-primary {
  padding: 6px 16px; background: var(--accent); color: #fff; border: none;
  border-radius: 3px; font-size: 11px; font-weight: 600; cursor: pointer;
  font-family: var(--font); transition: background 80ms;
}
.aicad-btn-primary:hover { background: var(--accent-hover); }
.aicad-btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.aicad-btn-success {
  padding: 6px 16px; background: var(--success); color: #111; border: none;
  border-radius: 3px; font-size: 11px; font-weight: 600; cursor: pointer;
  font-family: var(--font); width: 100%; margin-top: 8px;
}
.aicad-btn-success:hover { opacity: 0.9; }
.aicad-btn-ghost {
  padding: 4px 10px; background: transparent; color: var(--danger); border: 1px solid var(--danger);
  border-radius: 3px; font-size: 10px; cursor: pointer; font-family: var(--font);
}
.aicad-status {
  display: flex; align-items: center; gap: 8px; margin-top: 10px;
  padding: 8px; background: var(--surface); border-radius: 3px;
}
.aicad-spinner {
  width: 16px; height: 16px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%;
  animation: aicad-spin 0.8s linear infinite;
}
@keyframes aicad-spin { to { transform: rotate(360deg); } }
.aicad-status span { font-size: 10px; color: var(--text-muted); }
.aicad-result, .aicad-img-result { margin-top: 10px; }
.aicad-upload-zone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; padding: 20px; border: 2px dashed var(--border); border-radius: 4px;
  cursor: pointer; color: var(--text-faint); transition: all 80ms; text-align: center;
}
.aicad-upload-zone:hover { border-color: var(--accent); color: var(--text-muted); }
.aicad-upload-zone span { font-size: 11px; }
.aicad-upload-sub { font-size: 9px; color: var(--text-faint); }
.aicad-img-preview {
  display: flex; align-items: center; gap: 8px; margin-top: 8px;
  padding: 6px; background: var(--surface); border-radius: 3px;
}
.aicad-img-preview img { max-width: 80px; max-height: 60px; border-radius: 2px; }
.aicad-tips { margin-top: 12px; font-size: 10px; color: var(--text-faint); }
.aicad-tips summary { cursor: pointer; font-weight: 600; padding: 4px 0; }
.aicad-tips ul { margin: 6px 0 0 16px; line-height: 1.6; }
.aicad-pre {
  max-height: 200px; overflow: auto; padding: 8px; margin-top: 6px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 3px;
  font-family: var(--mono); font-size: 9px; color: var(--text-muted); white-space: pre;
}
.aicad-dxf-preview { margin-top: 8px; }

/* ─── UNIT CONVERTER ─── */
.ribbon-group-units { min-width: 460px; }
.ribbon-units-content { align-items: stretch !important; }
.unit-converter { display: flex; flex-direction: column; justify-content: center; gap: 4px; width: 100%; }
.uc-row {
  display: flex; align-items: center; gap: 4px; flex-wrap: nowrap;
}
.uc-input {
  width: 70px; padding: 3px 6px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 2px; color: var(--accent); font-family: var(--mono);
  font-size: 12px; font-weight: 600; text-align: right; outline: none;
}
.uc-input:focus { border-color: var(--accent); }
.uc-select {
  padding: 3px 4px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 2px; color: var(--text); font-family: var(--font);
  font-size: 9px; min-width: 110px; outline: none;
}
.uc-select:focus { border-color: var(--accent); }
.uc-arrow { color: var(--accent); font-size: 14px; font-weight: 700; padding: 0 2px; }
.uc-result {
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  color: var(--success); padding: 3px 8px;
  background: rgba(152,195,121,0.1); border: 1px solid rgba(152,195,121,0.2);
  border-radius: 2px; white-space: nowrap; min-width: 90px;
}
.uc-ref-table { display: flex; flex-direction: column; gap: 1px; padding: 0 4px; }
.uc-ref-title { font-size: 8px; font-weight: 700; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 2px; }
.uc-ref-row { font-size: 9px; font-family: var(--mono); color: var(--text-muted); line-height: 1.4; }

/* ─── LAYER PROPERTIES MANAGER (AutoCAD palette) ─── */
.layer-manager {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 85vw; max-width: 1100px;
  height: 70vh; max-height: 600px;
  background: var(--bg-dark); border: 1px solid var(--border);
  border-radius: 4px; z-index: 300;
  display: flex; flex-direction: column;
  box-shadow: 0 12px 40px rgba(0,0,0,0.6);
}
.layer-manager.hidden { display: none !important; }

.lm-header {
  display: flex; align-items: center; gap: 12px;
  padding: 6px 10px; background: var(--surface);
  border-bottom: 1px solid var(--border);
  border-radius: 4px 4px 0 0;
}
.lm-title { font-size: 10px; font-weight: 700; color: var(--text-muted); letter-spacing: 0.05em; }
.lm-current { font-size: 10px; color: var(--accent); font-family: var(--mono); }
.lm-header-btns { margin-left: auto; display: flex; gap: 4px; }
.lm-btn-icon {
  width: 22px; height: 22px; display: flex; align-items: center; justify-content: center;
  background: var(--surface2); border: 1px solid var(--border);
  color: var(--text-muted); border-radius: 2px; cursor: pointer;
  font-size: 14px; font-weight: 600; transition: all 80ms;
}
.lm-btn-icon:hover { background: var(--surface3); color: var(--text); border-color: var(--border-light); }
.lm-close:hover { color: var(--danger); }

.lm-toolbar {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 10px; background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-size: 10px; color: var(--text-faint);
}
.lm-filter-label { font-weight: 600; }
.lm-filter-tag {
  background: var(--accent-dim); color: var(--accent);
  padding: 1px 6px; border-radius: 2px; font-size: 9px; font-weight: 600;
}
.lm-filter-sep { color: var(--border); }
.lm-count { font-family: var(--mono); font-size: 9px; color: var(--text-faint); }
.lm-search {
  margin-left: auto; width: 180px; padding: 2px 6px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 2px; color: var(--text); font-family: var(--font);
  font-size: 10px; outline: none;
}
.lm-search:focus { border-color: var(--accent); }

.lm-table-wrap { flex: 1; overflow: auto; }
.lm-table {
  width: 100%; border-collapse: collapse;
  font-size: 10px; font-family: var(--font);
}
.lm-table thead th {
  background: var(--surface2); color: var(--text-muted);
  padding: 4px 8px; text-align: left; font-weight: 600;
  border-bottom: 1px solid var(--border); border-right: 1px solid var(--border);
  position: sticky; top: 0; z-index: 1;
  font-size: 9px; white-space: nowrap; cursor: default;
  user-select: none;
}
.lm-th-status { width: 24px; text-align: center; }
.lm-th-name { min-width: 200px; }
.lm-th-on, .lm-th-freeze, .lm-th-lock { width: 28px; text-align: center; }
.lm-th-color { width: 70px; }
.lm-th-linetype { width: 90px; }
.lm-th-lineweight { width: 80px; }
.lm-th-transp { width: 60px; }
.lm-th-desc { min-width: 100px; }

.lm-table tbody tr {
  cursor: pointer; transition: background 60ms;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.lm-table tbody tr:hover { background: var(--surface); }
.lm-table tbody tr.lm-active { background: var(--accent); color: #fff; }
.lm-table tbody tr.lm-active td { color: #fff; }
.lm-table tbody td {
  padding: 3px 8px; color: var(--text-muted);
  border-right: 1px solid rgba(255,255,255,0.03);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.lm-table tbody td.lm-td-center { text-align: center; }
.lm-table tbody td.lm-td-toggle {
  text-align: center; cursor: pointer; font-size: 12px;
  user-select: none;
}
.lm-table tbody td.lm-td-toggle:hover { color: var(--text); }

.lm-color-cell { display: flex; align-items: center; gap: 4px; }
.lm-color-box {
  width: 14px; height: 14px; border-radius: 2px;
  border: 1px solid rgba(255,255,255,0.2); cursor: pointer;
  flex-shrink: 0;
}
.lm-color-box:hover { border-color: #fff; }
.lm-color-name { font-size: 10px; }
.lm-name-input {
  background: var(--bg); border: 1px solid var(--accent);
  color: #fff; font-family: var(--font); font-size: 10px;
  padding: 1px 4px; width: 100%; border-radius: 1px; outline: none;
}

.lm-footer {
  padding: 4px 10px; background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 9px; color: var(--text-faint); font-family: var(--mono);
  border-radius: 0 0 4px 4px;
}

/* ─── UTILS ─── */
.hidden { display: none !important; }
.hidden-input { position: absolute; width: 0; height: 0; opacity: 0; pointer-events: none; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ═══════════════════════════════════════════════════════════════
   V6 — Accuracy-First UI
   ═══════════════════════════════════════════════════════════════ */

.v6-banner {
  padding: 6px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}
.v6-banner-block {
  background: #5a1414;
  border: 1px solid #ff4444;
  color: #ffcccc;
}
.v6-banner-warn {
  background: #4a3a0f;
  border: 1px solid #ff9800;
  color: #ffe4a3;
}
.v6-banner-ok {
  background: #1a3a1f;
  border: 1px solid #4CAF50;
  color: #c8f0c8;
}

.v6-classification {
  font-size: 11px;
  line-height: 1.5;
  padding: 6px 0;
  color: #ccc;
}
.v6-classification .v6-kv {
  display: flex;
  justify-content: space-between;
  padding: 2px 0;
  border-bottom: 1px dotted #333;
}
.v6-classification .v6-kv:last-child { border-bottom: none; }
.v6-classification .v6-k { color: #888; }
.v6-classification .v6-v { color: #ddd; font-family: 'Consolas', monospace; }

.v6-layers {
  padding: 6px 4px;
  border-top: 1px solid #333;
  margin-top: 4px;
}
.v6-layers-title {
  font-size: 10px;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.v6-layer-row {
  display: flex;
  align-items: center;
  font-size: 11px;
  padding: 3px 0;
  cursor: pointer;
  color: #ddd;
}
.v6-layer-row input { margin-right: 6px; }
.v6-swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  margin-right: 6px;
  border: 1px solid #444;
}
.v6-count {
  margin-left: auto;
  font-family: 'Consolas', monospace;
  font-size: 10px;
  color: #888;
  background: #222;
  padding: 1px 5px;
  border-radius: 2px;
}
.v6-layer-actions {
  display: flex;
  gap: 4px;
  margin-top: 6px;
}
.v6-btn-sm {
  flex: 1;
  font-size: 10px;
  padding: 4px 6px;
  background: #333;
  color: #ddd;
  border: 1px solid #555;
  border-radius: 2px;
  cursor: pointer;
}
.v6-btn-sm:hover { background: #444; }
.v6-btn-sm:disabled { opacity: 0.4; cursor: not-allowed; }

.v6-details {
  padding: 6px;
  margin-top: 6px;
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 2px;
  font-size: 11px;
  color: #ccc;
  line-height: 1.5;
}
.v6-details .v6-details-title {
  font-weight: 600;
  color: #00E5FF;
  margin-bottom: 4px;
  font-size: 10px;
  text-transform: uppercase;
}
.v6-details .v6-chip {
  display: inline-block;
  padding: 1px 5px;
  border-radius: 2px;
  font-size: 10px;
  font-family: 'Consolas', monospace;
  margin-right: 3px;
  margin-bottom: 2px;
}
.v6-chip-ok    { background: #1a3a1f; color: #8ff2a0; }
.v6-chip-warn  { background: #4a3a0f; color: #ffe4a3; }
.v6-chip-fail  { background: #5a1414; color: #ffb0b0; }
.v6-chip-info  { background: #1a2a3a; color: #a0d8ff; }

.v6-check-list { margin-top: 4px; }
.v6-check-row {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  padding: 1px 0;
  font-family: 'Consolas', monospace;
}
.v6-check-row .v6-check-name { color: #aaa; }
.v6-check-row .pass { color: #4CAF50; }
.v6-check-row .warn { color: #FF9800; }
.v6-check-row .fail { color: #F44336; }

/* Anchor suggestion popup */
#v6-anchor-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2000;
  background: #2a2a2a;
  border: 1px solid #ff9800;
  border-radius: 4px;
  padding: 16px;
  min-width: 320px;
  max-width: 420px;
  color: #ddd;
  font-size: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.6);
}
#v6-anchor-popup h3 {
  margin: 0 0 8px 0;
  font-size: 13px;
  color: #ff9800;
}
#v6-anchor-popup p {
  margin: 4px 0;
  line-height: 1.5;
}
#v6-anchor-popup ul {
  margin: 4px 0;
  padding-left: 16px;
  font-family: 'Consolas', monospace;
  font-size: 11px;
}
#v6-anchor-popup .v6-close-btn {
  display: block;
  margin: 8px auto 0;
  padding: 4px 12px;
  background: #444;
  border: 1px solid #666;
  border-radius: 2px;
  color: #fff;
  cursor: pointer;
}

/* ═══ V6.1 — Texte → 2D ═══ */
.aicad-badge-v6 {
  display: inline-block;
  background: linear-gradient(90deg, #00E5FF, #4F98A3);
  color: #0a0a0a;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 3px;
  margin-left: 4px;
  vertical-align: middle;
  letter-spacing: 0.5px;
}
.aicad-v6-info {
  background: rgba(0, 229, 255, 0.08);
  border-left: 3px solid #00E5FF;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.5;
  margin-bottom: 12px;
  border-radius: 4px;
  color: #c8e8ef;
}
.aicad-v6-info b { color: #00E5FF; }
.aicad-v6-info code {
  background: rgba(0,0,0,0.4);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: #FF00FF;
}
.aicad-v6-warn {
  display: block;
  margin-top: 6px;
  color: #ffb84d;
  font-size: 11px;
}
.aicad-text2d-preview {
  margin-top: 10px;
  padding: 10px;
  background: rgba(255, 0, 255, 0.06);
  border: 1px solid rgba(255, 0, 255, 0.3);
  border-radius: 4px;
}
.aicad-text2d-summary {
  font-size: 12px;
  color: #e0e0e0;
  margin-bottom: 6px;
}
.aicad-text2d-summary b { color: #FF00FF; }
.aicad-text2d-notes {
  font-size: 11px;
  color: #aaa;
  margin-bottom: 10px;
  font-style: italic;
}
.aicad-text2d-notes ul { margin: 4px 0 0 16px; padding: 0; }
.aicad-text2d-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}
.aicad-text2d-actions .aicad-btn-success {
  flex: 1;
  animation: pulse-anchor 1.8s ease-in-out infinite;
}
@keyframes pulse-anchor {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 255, 0, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(0, 255, 0, 0); }
}
.anchor-waiting-cursor {
  cursor: crosshair !important;
}
#aicad-text2d .aicad-select {
  min-width: 280px;
}