/* 3D Workshop - Tinkercad-inspired styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #1a1d2e;
  --bg-secondary: #23263a;
  --bg-panel: #2a2d42;
  --text-primary: #ffffff;
  --text-secondary: #a0a3b8;
  --accent: #4f8cff;
  --accent-hover: #3a7ae8;
  --danger: #ff4757;
  --success: #2ed573;
  --border: #3a3d5c;
  --shadow: rgba(0, 0, 0, 0.3);
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
}

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

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 28px;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #a55eea);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-actions {
  display: flex;
  gap: 8px;
}

/* Buttons */
.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-panel);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

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

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #ff6b7a;
}

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

/* Panels */
.panel {
  background: var(--bg-panel);
  padding: 15px;
  overflow-y: auto;
  flex-shrink: 0;
}

.panel-left {
  width: 220px;
  border-right: 1px solid var(--border);
}

.panel-right {
  width: 280px;
  border-left: 1px solid var(--border);
}

.panel-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  margin-top: 15px;
}

.panel-title:first-child {
  margin-top: 0;
}

/* Shapes Grid */
.shapes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.shape-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 6px;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-primary);
}

.shape-btn:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
}

.shape-btn:active {
  transform: translateY(0);
}

.shape-icon {
  font-size: 28px;
}

.shape-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Colors Grid */
.colors-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.color-btn {
  width: 100%;
  aspect-ratio: 1;
  border: 2px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.color-btn:hover {
  transform: scale(1.1);
  border-color: white;
}

.color-btn.active {
  border-color: white;
  box-shadow: 0 0 0 2px var(--accent);
}

/* Operations Panel */
.operations-panel {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.op-btn {
  width: 100%;
  justify-content: center;
  font-size: 13px;
  padding: 8px 10px;
}

/* Viewport */
.viewport-container {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
}

#viewport {
  flex: 1;
  position: relative;
}

#viewport canvas {
  display: block;
}

.viewport-hint {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.7);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-secondary);
  pointer-events: none;
  white-space: nowrap;
}

.viewport-tools {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 6px;
}

.tool-btn {
  width: 40px;
  height: 40px;
  border: 2px solid var(--border);
  border-radius: 10px;
  background: var(--bg-panel);
  cursor: pointer;
  font-size: 18px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.tool-btn.active {
  border-color: var(--accent);
  background: var(--accent);
}

.viewport-info {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.7);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  pointer-events: none;
  max-width: 300px;
}

/* Properties Panel */
.properties-empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 30px 10px;
  font-size: 14px;
}

.properties-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hidden {
  display: none !important;
}

.prop-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.prop-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.prop-value-hint {
  font-weight: 400;
  color: var(--text-muted, #8b93a7);
  margin-left: 4px;
}

.prop-row {
  display: flex;
  gap: 6px;
}

.prop-field {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 4px;
}

.prop-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  width: 12px;
  text-align: center;
}

.prop-input {
  width: 100%;
  padding: 6px 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: 'Consolas', monospace;
}

.prop-input:focus {
  outline: none;
  border-color: var(--accent);
}

.prop-color {
  width: 100%;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  background: none;
  padding: 2px;
}

.prop-range {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-secondary);
  border-radius: 3px;
  outline: none;
}

.prop-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

.prop-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.prop-actions .btn {
  flex: 1;
  justify-content: center;
  padding: 8px 6px;
  font-size: 13px;
}

/* Radio buttons */
.radio-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-primary);
}

.radio-label input[type="radio"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}

/* Objects List */
.objects-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.objects-empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 15px;
  font-size: 13px;
}

.object-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 13px;
}

.object-item:hover {
  border-color: var(--accent);
}

.object-item.selected {
  border-color: var(--accent);
  background: rgba(79, 140, 255, 0.15);
}

.object-color {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  flex-shrink: 0;
}

.object-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Marquee Selection */
.marquee-rect {
  position: absolute;
  border: 2px dashed var(--accent);
  background: rgba(79, 140, 255, 0.1);
  pointer-events: none;
  z-index: 100;
}

/* Pen Tool Overlay */
.pen-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.pen-overlay.hidden {
  display: none !important;
}

.pen-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.pen-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.pen-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

#pen-canvas-wrap {
  flex: 1;
  position: relative;
  background: #0f1730;
  display: flex;
  align-items: center;
  justify-content: center;
}

#pen-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

.pen-hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.7);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  pointer-events: none;
  white-space: nowrap;
}

#pen-properties {
  width: 280px;
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
}

.pen-props {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pen-prop {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pen-prop label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.pen-prop input[type="range"] {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-secondary);
  border-radius: 3px;
  outline: none;
}

.pen-prop input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

.pen-prop input[type="color"] {
  width: 100%;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  background: none;
  padding: 2px;
}

.pen-prop select {
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
}

#pen-points {
  flex: 1;
  min-height: 100px;
  max-height: 300px;
  overflow-y: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  font-size: 12px;
  font-family: 'Consolas', monospace;
  color: var(--text-secondary);
}

#pen-points .pen-point {
  display: flex;
  justify-content: space-between;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
}

#pen-points .pen-point:hover {
  background: var(--border);
}

#pen-points .pen-point .delete {
  color: var(--danger);
  font-weight: bold;
}

#pen-properties .btn {
  width: 100%;
  justify-content: center;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

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

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  max-width: 400px;
  width: 90%;
}

.modal h3 {
  margin-bottom: 12px;
  font-size: 18px;
}

.modal p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}