* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #eeeeee;
  --accent: #000000;
  --text-primary: #000000;
  --text-secondary: #666666;
  --border: #cccccc;
  --grid: #e0e0e0;
  --font-mono: 'JetBrains Mono', monospace;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-primary);
  color: var(--text-primary);
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Main Layout */
.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.viewport {
  flex: 1;
  position: relative;
  background: var(--bg-primary);
}

.viewport canvas {
  display: block;
}

/* View labels */
.view-label {
  position: absolute;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  padding: 8px 12px;
  pointer-events: none;
}

.view-label.top-left { top: 0; left: 0; }
.view-label.top-right { top: 0; left: 50%; }
.view-label.bottom-left { top: 50%; left: 0; }
.view-label.bottom-right { top: 50%; left: 50%; }

/* Grid lines for viewport */
.viewport::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border);
  pointer-events: none;
  z-index: 10;
}

.viewport::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--border);
  pointer-events: none;
  z-index: 10;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar section {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar section:last-child {
  border-bottom: none;
}

.sidebar h2 {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar h2.subsection {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

/* Weight row (second line, no label) */
.components-table tr td:first-child:empty + td {
  color: var(--text-secondary);
  font-size: 11px;
}

.btn-reset {
  font-family: var(--font-mono);
  font-size: 14px;
  width: 20px;
  height: 20px;
  padding: 0;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 2px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-reset:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Controls */
.control-group {
  margin-bottom: 10px;
}

.control-group:last-child {
  margin-bottom: 0;
}

.info-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  font-size: 12px;
}

.info-row:first-of-type {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.info-label {
  color: var(--text-secondary);
}

.info-value {
  color: var(--text-primary);
  font-weight: 500;
}

.control-group label {
  display: block;
  font-size: 12px;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.slider-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.slider-container input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  cursor: pointer;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
  cursor: pointer;
}

.slider-container input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
  border: none;
  cursor: pointer;
}

.slider-container .value {
  min-width: 70px;
  font-size: 12px;
  color: var(--text-primary);
  text-align: right;
}

/* Profile Info (inline) */
.profile-name {
  font-weight: 500;
}

.profile-dims {
  color: var(--text-primary);
  margin-left: 4px;
}

/* Spacing toggle and zones */
.spacing-toggle {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  cursor: pointer;
  margin-bottom: 0;
}

.checkbox-label input[type="checkbox"] {
  width: 14px;
  height: 14px;
  cursor: pointer;
}

.checkbox-label .info-value {
  margin-left: auto;
  text-align: right;
  min-width: 60px;
}

.spaces-panel {
  margin-top: 8px;
}

.spaces-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.space-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
}

.space-label {
  color: var(--text-secondary);
}

.space-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.space-input {
  font-family: var(--font-mono);
  font-size: 11px;
  width: 50px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  background: var(--bg-primary);
  text-align: right;
}

.space-input::placeholder {
  color: var(--text-secondary);
}

.space-unit {
  color: var(--text-secondary);
  font-size: 10px;
}

.space-auto {
  display: flex;
  align-items: center;
  gap: 3px;
  cursor: pointer;
}

.space-auto input[type="checkbox"] {
  cursor: pointer;
  width: 12px;
  height: 12px;
}

.space-auto span {
  font-size: 10px;
  color: var(--text-secondary);
}

/* Tables */
.components-table,
.price-table {
  width: 100%;
  border-collapse: collapse;
}

.components-table td,
.price-table td {
  padding: 3px 0;
  font-size: 12px;
}

.components-table td:first-child,
.price-table td:first-child {
  color: var(--text-secondary);
}

.components-table td:last-child,
.price-table td:last-child {
  text-align: right;
  color: var(--text-primary);
}

.price-table tfoot .divider td {
  padding: 0;
}

.price-table tfoot .divider hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 6px 0;
}

.price-table tfoot .total td {
  padding-top: 6px;
  font-weight: 600;
}

.price-table tfoot .total td:last-child {
  font-size: 14px;
}

/* Actions */
.actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
}

.btn {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  padding: 12px 16px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--text-secondary);
  border-color: var(--text-secondary);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  border-color: var(--accent);
}

/* Scrollbar */
.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}