/* ── Reset & base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
/* Ensure the HTML `hidden` attribute always wins over any explicit display rule */
[hidden] { display: none !important; }

:root {
  --bg:          #0e1117;
  --surface:     #161b22;
  --surface2:    #21262d;
  --border:      #30363d;
  --accent:      #58a6ff;
  --accent-dim:  #1f6feb44;
  --text:        #e6edf3;
  --text-muted:  #8b949e;
  --success:     #3fb950;
  --error:       #f85149;
  --sidebar-w:   240px;
}

html, body {
  height: 100%;
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

/* ── Layout ──────────────────────────────────────────────────────── */
body { display: flex; height: 100vh; }

aside#sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

main#main {
  flex: 1;
  position: relative;
  background: var(--bg);
  overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────────────────────── */
.sidebar-header {
  padding: 16px 14px 12px;
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  display: block;
}
.brand-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.logo {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .02em;
  line-height: 1.1;
}
.brand-subtitle {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
}

.sidebar-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.section-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.info-row {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.info-row span.val { color: var(--text); }

/* ── Unit toggle ─────────────────────────────────────────────────── */
.unit-toggle {
  display: flex; gap: 6px;
}
.unit-btn {
  flex: 1; padding: 5px 0; border-radius: 5px;
  border: 1px solid var(--border); background: var(--surface2);
  color: var(--text-muted); font-size: 12px; font-weight: 600;
  cursor: pointer; transition: background .15s, border-color .15s, color .15s;
  letter-spacing: .04em;
}
.unit-btn:hover { background: #2d333b; color: var(--text); }
.unit-btn.active {
  background: var(--accent-dim); border-color: var(--accent); color: var(--accent);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn-primary, .btn-secondary {
  width: 100%;
  padding: 7px 10px;
  border-radius: 6px;
  border: 1px solid;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  transition: background .15s, border-color .15s;
  text-align: center;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
}
.btn-primary:hover { background: #79c0ff; }

.btn-secondary {
  background: var(--surface2);
  border-color: var(--border);
  color: var(--text);
}
.btn-secondary:hover { background: #2d333b; border-color: var(--accent); }

/* ── Section header (title + badge) ─────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.section-badge {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1px 7px;
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

/* ── File list ───────────────────────────────────────────────────── */
#files-list { display: flex; flex-direction: column; gap: 2px; margin-top: 2px; }

.file-row {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 3px;
  border-radius: 5px;
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
}
.file-row:hover { background: var(--surface2); }
.file-row.active {
  background: var(--accent-dim);
  border-color: #1f6feb88;
}
.file-row.file-hidden .file-name { opacity: 0.38; text-decoration: line-through; }

.file-vis {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 1px;
  font-size: 13px;
  line-height: 1;
  flex-shrink: 0;
}
.file-vis:hover { transform: scale(1.2); }

.file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 11px;
  color: var(--text);
}

.file-rm {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 2px;
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  flex-shrink: 0;
  line-height: 1;
  opacity: 0;
  transition: color .1s;
}
.file-row:hover .file-rm { opacity: 1; }
.file-rm:hover { color: var(--error) !important; }

/* ── Drag-over overlay (when canvas is showing) ──────────────────── */
#main.drag-over {
  box-shadow: inset 0 0 0 2px var(--accent);
}
#main.drag-over::before {
  content: 'Drop DXF files to add';
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  z-index: 20;
  pointer-events: none;
  white-space: nowrap;
}

/* ── Layers list ─────────────────────────────────────────────────── */
.layer-row {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 3px 0;
  cursor: pointer;
  border-radius: 4px;
  user-select: none;
}
.layer-row:hover { background: var(--surface2); padding-left: 4px; }
.layer-swatch {
  width: 12px; height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
  border: 1px solid #ffffff22;
}
.layer-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}
.layer-row.hidden .layer-name  { opacity: .4; text-decoration: line-through; }
.layer-row.hidden .layer-swatch { opacity: .25; }

/* ── Types list ──────────────────────────────────────────────────── */
.type-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  padding: 1px 0;
  color: var(--text-muted);
}
.type-row .cnt { color: var(--text); font-variant-numeric: tabular-nums; }

/* ── Drop zone ───────────────────────────────────────────────────── */
#drop-zone {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: background .2s;
}
#drop-zone.drag-over { background: var(--accent-dim); }

.drop-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
}
.drop-inner svg { opacity: .4; }
.drop-title { font-size: 17px; font-weight: 600; color: var(--text); }
.drop-sub   { font-size: 13px; }
.drop-sub strong { color: var(--accent); }

/* ── Canvas ──────────────────────────────────────────────────────── */
canvas#canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
}
canvas#canvas:active { cursor: grabbing; }

/* ── HUD ─────────────────────────────────────────────────────────── */
#hud {
  position: absolute;
  bottom: 10px; left: 10px;
  display: flex;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 11px;
  color: var(--text-muted);
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}

/* ── Loader ──────────────────────────────────────────────────────── */
#loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
  background: var(--bg);
  z-index: 10;
}
.spinner {
  width: 22px; height: 22px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Error bar ───────────────────────────────────────────────────── */
#error-bar {
  position: absolute;
  top: 10px; left: 50%; transform: translateX(-50%);
  background: #2d1117;
  border: 1px solid var(--error);
  color: var(--error);
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 13px;
  z-index: 20;
  max-width: 80%;
}

/* ── URL / Cloud open modal ─────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: min(520px, 96vw);
  box-shadow: 0 16px 48px rgba(0,0,0,.5);
  overflow: hidden;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 14px; font-weight: 600; color: var(--text); }
.modal-close {
  background: none; border: none; color: var(--text-muted);
  font-size: 20px; line-height: 1; cursor: pointer; padding: 0 4px;
}
.modal-close:hover { color: var(--error); }

.modal-body { padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.modal-label { font-size: 12px; color: var(--text-muted); font-weight: 500; }

.url-input-row { display: flex; gap: 8px; }
.url-input {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 12px;
  padding: 7px 10px;
  outline: none;
  transition: border-color .15s;
}
.url-input:focus { border-color: var(--accent); }
.url-load-btn { flex-shrink: 0; width: auto; padding: 7px 16px; font-size: 12px; }

/* Status line below input */
.url-status {
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  word-break: break-all;
}
.url-status-loading { color: var(--accent); border-color: var(--accent-dim); }
.url-status-ok      { color: var(--success); border-color: #2ea04326; background: #2ea04314; }
.url-status-error   { color: var(--error);   border-color: #f8514926; background: #f8514914; }

/* Cloud badge row */
.cloud-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.cloud-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 11px;
  color: var(--text-muted);
  background: var(--surface2);
  cursor: default;
  user-select: none;
}
.cloud-badge svg { width: 13px; height: 13px; flex-shrink: 0; }

/* Collapsible service instructions */
.cloud-tips summary {
  font-size: 11px;
  color: var(--accent);
  cursor: pointer;
  user-select: none;
  padding: 2px 0;
}
.cloud-tips summary:hover { text-decoration: underline; }
.cloud-tip-content {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 8px;
  padding: 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.cloud-tip-content p { font-size: 11px; color: var(--text-muted); line-height: 1.5; }
.cloud-tip-content code {
  font-family: monospace;
  font-size: 10px;
  background: var(--bg);
  padding: 1px 4px;
  border-radius: 3px;
  color: var(--text);
}

/* ── Drawing topbar (floating icon toolbar) ────────────────── */
#draw-topbar {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  pointer-events: auto;
  user-select: none;
}

.dtb-inner {
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(22,27,34,0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 5px 8px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.55), 0 1px 4px rgba(0,0,0,0.3);
}

.dtb-group {
  display: flex;
  align-items: center;
  gap: 1px;
}

.dtb-sep {
  width: 1px;
  height: 22px;
  background: var(--border);
  margin: 0 5px;
  flex-shrink: 0;
  opacity: 0.7;
}

/* Icon button */
.dtb-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  flex-shrink: 0;
  padding: 0;
  font-family: inherit;
}
.dtb-btn:hover {
  background: var(--surface2);
  border-color: var(--border);
  color: var(--text);
}
.dtb-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}
.dtb-btn svg { pointer-events: none; flex-shrink: 0; }

/* Snap toggle: label acts as button */
.dtb-snap {
  cursor: pointer;
}
.dtb-snap input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.dtb-snap:has(input:checked) {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* Corner-size inline field */
.dtb-field {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  height: 34px;
  padding: 0 8px;
  margin-left: 2px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  cursor: default;
}
.dtb-field input[type="number"] {
  width: 46px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 11px;
  font-family: inherit;
  text-align: right;
  -moz-appearance: textfield;
}
.dtb-field input[type="number"]::-webkit-outer-spin-button,
.dtb-field input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }

/* Shape count badge */
.dtb-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  border-radius: 11px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  padding: 0 5px;
  margin-left: 3px;
}

/* Draw status inside bottom HUD */
.hud-sep {
  display: inline-block;
  width: 1px;
  height: 10px;
  background: var(--border);
  margin: 0 4px;
  opacity: 0.6;
  flex-shrink: 0;
}
#draw-status  { color: var(--accent); white-space: nowrap; }
#draw-selection { overflow: hidden; text-overflow: ellipsis; max-width: 260px; white-space: nowrap; }

/* ── Tooltip (CSS-only, appears below the button after a short delay) ── */
#draw-topbar [data-tooltip] { position: relative; }
#draw-topbar [data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 11px;
  font-weight: 400;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.1s 0.5s;
  z-index: 200;
  box-shadow: 0 4px 14px rgba(0,0,0,0.45);
}
#draw-topbar [data-tooltip]:hover::after { opacity: 1; }

/* ── Backsplash / Edge-type panel ─────────────────────── */
#backsplash-panel {
  display: none;
  position: fixed;
  z-index: 500;
  background: var(--surface);
  border: 1px solid #d29922;
  border-radius: 10px;
  padding: 0 0 12px;
  min-width: 250px;
  box-shadow: 0 6px 28px rgba(0,0,0,0.65);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 12px;
  color: var(--text);
  overflow: hidden;
}
/* Tab bar */
.bs-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  border-radius: 10px 10px 0 0;
}
.bs-tab {
  flex: 1;
  padding: 6px 4px;
  border: none;
  background: none;
  font-size: 10px;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-muted);
  cursor: pointer;
  transition: color .12s, background .12s;
  letter-spacing: .02em;
}
.bs-tab:first-child { border-radius: 10px 0 0 0; }
.bs-tab:last-child  { border-radius: 0 10px 0 0; }
.bs-tab:hover { color: var(--text); background: var(--surface); }
.bs-tab.bs-tab-active {
  color: #d29922;
  background: var(--surface);
  border-bottom: 2px solid #d29922;
}
/* Tab content areas get consistent padding */
#bs-content-splash,
#bs-content-edge,
#bs-content-offset {
  padding: 12px 16px 0;
}
/* In-panel edge-type rows */
#bs-edge-list {
  max-height: 160px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  margin-bottom: 2px;
}
.bset-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 4px;
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background .1s;
  border: 1px solid transparent;
}
.bset-row:hover { background: var(--surface2); }
.bset-row.bset-sel {
  background: var(--accent-dim);
  border-color: #1f6feb88;
}
.bset-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.18);
  flex-shrink: 0;
  transition: border-color .1s;
}
.bset-row.bset-sel .bset-dot { border-color: var(--accent); }
.bset-swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
  border: 1px solid rgba(255,255,255,0.15);
  pointer-events: none;
}
.bset-name {
  flex: 1;
  font-size: 11px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bset-row.bset-sel .bset-name { color: var(--accent); font-weight: 600; }

/* ── Extrude input panel ───────────────────────────────── */
#extrude-input-panel {
  display: none;
  position: fixed;
  z-index: 500;
  background: var(--surface);
  border: 1px solid var(--success);
  border-radius: 10px;
  padding: 14px 16px 12px;
  min-width: 210px;
  box-shadow: 0 6px 28px rgba(0,0,0,0.65);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 12px;
  color: var(--text);
}

/* ── Corner input panel (appears on grip click) ──────────────── */
#corner-input-panel {
  display: none;
  position: fixed;
  z-index: 500;
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 14px 16px 12px;
  min-width: 200px;
  box-shadow: 0 6px 28px rgba(0,0,0,0.65);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 12px;
  color: var(--text);
}
.cip-title {
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 10px;
  letter-spacing: .02em;
}
.cip-mode-row {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}
.cip-mode-btn {
  flex: 1;
  padding: 5px 0;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
}
.cip-mode-btn:hover { background: #2d333b; color: var(--text); }
.cip-mode-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}
.cip-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}
.cip-label {
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
}
.cip-row input[type="number"] {
  width: 80px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  font-size: 12px;
  font-family: inherit;
  padding: 4px 8px;
  outline: none;
  text-align: right;
  -moz-appearance: textfield;
}
.cip-row input[type="number"]:focus { border-color: var(--accent); }
.cip-row input[type="number"]::-webkit-outer-spin-button,
.cip-row input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }
.cip-hint {
  font-size: 10px;
  color: var(--text-muted);
  margin-bottom: 10px;
  opacity: 0.7;
}
.cip-btns {
  display: flex;
  gap: 7px;
}
.cip-apply, .cip-cancel {
  flex: 1;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  transition: background .12s, color .12s;
}
.cip-apply {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #000;
}
.cip-apply:hover { background: #79c0ff; }
.cip-cancel {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.cip-cancel:hover { border-color: var(--error); color: var(--error); }

/* ── Edge-edit input panel ────────────────────────────────────── */
#edge-input-panel {
  display: none;
  position: fixed;
  z-index: 500;
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 14px 16px 12px;
  min-width: 210px;
  box-shadow: 0 6px 28px rgba(0,0,0,0.65);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 12px;
  color: var(--text);
}
.eip-title {
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: .02em;
}
.eip-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}
.eip-label {
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
}
.eip-row input[type="number"] {
  width: 80px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  font-size: 12px;
  font-family: inherit;
  padding: 4px 8px;
  outline: none;
  text-align: right;
  -moz-appearance: textfield;
}
.eip-row input[type="number"]:focus { border-color: var(--accent); }
.eip-row input[type="number"]::-webkit-outer-spin-button,
.eip-row input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }
.eip-row input[type="text"] {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  font-size: 12px;
  font-family: inherit;
  padding: 4px 8px;
  outline: none;
}
.eip-row input[type="text"]:focus { border-color: var(--accent); }
.eip-msg {
  font-size: 11px;
  color: var(--text-muted);
  min-height: 14px;
  margin-bottom: 10px;
  line-height: 1.4;
}
.eip-btns {
  display: flex;
  gap: 7px;
  margin-top: 6px;
}
.eip-apply, .eip-cancel {
  flex: 1;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  transition: background .12s, color .12s;
}
.eip-apply {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #000;
}
.eip-apply:hover { background: #79c0ff; }
.eip-cancel {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.eip-cancel:hover { border-color: var(--error); color: var(--error); }

/* ── Edge-edit operation buttons (dimmed/disabled when not in edge-edit mode) */
.dtb-edge-op:disabled {
  opacity: 0.28;
  cursor: default;
  pointer-events: none;
}
.dtb-edge-op:not(:disabled):hover {
  background: var(--surface2);
  border-color: var(--accent);
  color: var(--accent);
}
/* Highlighted (targeted) segment drawn by edge-edit mode */
canvas#canvas.draw-edge-edit { cursor: crosshair; }

/* ── Shape area list panel (bottom-right) ─────────────────────── */
#shape-list-panel {
  position: absolute;
  bottom: 10px;
  right: 10px;
  z-index: 10;
  min-width: 190px;
  max-width: 280px;
  max-height: 260px;
  display: flex;
  flex-direction: column;
  background: rgba(22,27,34,0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.55), 0 1px 4px rgba(0,0,0,0.3);
  font-size: 11px;
  color: var(--text);
  pointer-events: auto;
  user-select: none;
}
.slp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px 5px;
  border-bottom: 1px solid var(--border);
}
.slp-title {
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.slp-total {
  font-weight: 700;
  font-size: 12px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.slp-body {
  overflow-y: auto;
  padding: 4px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.slp-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3px 12px;
  gap: 8px;
  cursor: default;
  transition: background 0.1s;
}
.slp-row:hover { background: var(--surface2); }
.slp-row.slp-hovered { background: rgba(240,176,65,0.12); outline: 1px solid #f0b04133; }
.slp-row.slp-selected { background: var(--accent-dim); }
/* Backsplash children indented under parent */
.slp-row.slp-child {
  padding-left: 24px;
  font-size: 10px;
  opacity: 0.85;
}
.slp-row.slp-child .slp-name { color: var(--text-muted); }
.slp-row.slp-child .slp-area { font-size: 10px; }
.slp-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-muted);
  font-size: 11px;
}
.slp-row.slp-selected .slp-name { color: var(--text); }
.slp-rename {
  flex-shrink: 0;
  cursor: pointer;
  font-size: 10px;
  color: var(--text-muted);
  opacity: 0;
  padding: 0 2px;
  transition: opacity 0.1s, color 0.1s;
}
.slp-row:hover .slp-rename { opacity: 1; }
.slp-rename:hover { color: var(--accent); }
.slp-area {
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  font-size: 11px;
  text-align: right;
}

/* ── Edge Types panel ──────────────────────────────────────── */
.et-add-btn {
  background: none; border: 1px solid var(--border); color: var(--accent);
  border-radius: 4px; width: 22px; height: 22px; cursor: pointer;
  font-size: 16px; line-height: 1; display: flex; align-items: center;
  justify-content: center;
}
.et-add-btn:hover { background: var(--surface2); }
.et-row {
  display: flex; align-items: center; gap: 7px;
  padding: 4px 3px; border-radius: 4px; cursor: pointer;
  user-select: none; transition: background .1s;
}
.et-row:hover { background: var(--surface2); }
.et-row.et-active { background: var(--accent-dim); outline: 1px solid #1f6feb88; }
.et-swatch {
  width: 14px; height: 14px; border-radius: 3px; flex-shrink: 0;
  border: 1px solid rgba(255,255,255,0.15); cursor: pointer;
}
.et-name {
  flex: 1; font-size: 11px; color: var(--text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.et-row.et-active .et-name { color: var(--accent); font-weight: 600; }
.et-rm {
  background: none; border: none; color: var(--text-muted); cursor: pointer;
  font-size: 13px; opacity: 0; padding: 0 2px; transition: opacity .1s;
}
.et-row:hover .et-rm { opacity: 1; }
.et-rm:hover { color: var(--error); }

/* Canvas cursor overrides (set by draw.js) */
canvas#canvas.draw-crosshair { cursor: crosshair; }