:root {
  --primary: #8B5CF6;
  --secondary: #A78BFA;
  --accent: #C4B5FD;
  --bg: #13091F;
  --panel-bg: rgba(25, 12, 40, 0.6);
  --border-color: rgba(139, 92, 246, 0.2);
  --border-radius: 12px;
  --text: #F3F4F6;
  --text-muted: #A78BFA;
  --hover-bg: rgba(139, 92, 246, 0.15);
  --active-bg: rgba(139, 92, 246, 0.3);
  --grid-color: rgba(255, 255, 255, 0.1);
  --checker-light: #2A1B3D;
  --checker-dark: #190F26;
  --danger: #EF4444;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Typography & Layout */
h1 { font-size: 1.25rem; font-weight: 600; color: var(--accent); margin: 0; }
h2 { font-size: 1.15rem; font-weight: 600; color: var(--text); margin-bottom: 1rem; }
h3 { font-size: 0.85rem; font-weight: 600; color: var(--secondary); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.75rem; }

/* Buttons */
.btn {
  background: var(--bg);
  border: 1px solid var(--border-color);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.btn:hover:not(:disabled) {
  background: var(--hover-bg);
  border-color: var(--primary);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn.primary { background: var(--primary); color: white; border-color: var(--primary); }
.btn.primary:hover:not(:disabled) { background: #7C3AED; }
.btn.secondary { background: rgba(139, 92, 246, 0.2); border-color: var(--primary); color: var(--accent); }
.btn.ghost { background: transparent; border-color: transparent; }
.btn.danger { color: var(--danger); border-color: rgba(239, 68, 68, 0.3); }
.btn.danger:hover { background: rgba(239, 68, 68, 0.1); border-color: var(--danger); }
.btn.small { padding: 0.25rem 0.5rem; font-size: 0.75rem; }

.icon-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}
.icon-btn:hover:not(:disabled) {
  background: var(--hover-bg);
  color: var(--primary);
}
.icon-btn.large { width: 44px; height: 44px; border-radius: 50%; background: var(--primary); color: white; }
.icon-btn.large:hover { background: #7C3AED; color: white; transform: scale(1.05); }
.icon-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.icon-btn i { width: 18px; height: 18px; }

/* Header */
.app-header {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--primary);
}

.menu-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.divider {
  width: 1px;
  height: 24px;
  background: var(--border-color);
  margin: 0 0.5rem;
}

/* Main Workspace */
.workspace {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.panel {
  padding: 1rem;
}

/* Sidebars */
.sidebar-left, .sidebar-right {
  width: 250px;
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.sidebar-right {
  border-right: none;
  border-left: 1px solid var(--border-color);
}

/* Tools */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tool-btn {
  background: rgba(139, 92, 246, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  height: 44px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tool-btn:hover {
  background: var(--hover-bg);
  color: var(--text);
}

.tool-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
}

/* Colors */
.current-color-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

input[type="color"] {
  -webkit-appearance: none;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 4px;
  padding: 0;
  cursor: pointer;
  background: none;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch { border: 2px solid rgba(255, 255, 255, 0.2); border-radius: 4px; }

.hex-readout {
  font-family: 'Fira Code', monospace;
  font-size: 0.85rem;
  color: var(--accent);
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.palette-swatch {
  aspect-ratio: 1;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.1s ease;
}
.palette-swatch:hover { transform: scale(1.1); border-color: white; }

/* Editor Area */
.editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  background-image: linear-gradient(45deg, var(--checker-dark) 25%, transparent 25%, transparent 75%, var(--checker-dark) 75%, var(--checker-dark)),
    linear-gradient(45deg, var(--checker-dark) 25%, transparent 25%, transparent 75%, var(--checker-dark) 75%, var(--checker-dark));
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
  background-color: var(--checker-light);
  overflow: hidden;
}

.editor-toolbar {
  height: 48px;
  background: rgba(19, 9, 31, 0.8);
  backdrop-filter: blur(4px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 5;
}

.editor-toolbar select {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  outline: none;
  font-family: inherit;
}

.canvas-settings, .view-settings, .zoom-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

#zoom-level {
  width: 40px;
  text-align: center;
  font-family: monospace;
}

/* Canvas Wrapper */
.canvas-wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 512px;
  height: 512px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.canvas-wrapper canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  cursor: crosshair;
}

#grid-canvas, #ui-canvas {
  pointer-events: none;
}
#onion-canvas {
  opacity: 0.4;
  pointer-events: none;
}

/* Timeline Panel */
.timeline-panel {
  height: 160px;
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.timeline-header {
  padding: 0.5rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.timeline-header h3 { margin: 0; }

.frames-container {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.5rem;
  overflow-x: auto;
}

.frame-item {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  background-image: linear-gradient(45deg, var(--checker-dark) 25%, transparent 25%, transparent 75%, var(--checker-dark) 75%, var(--checker-dark)),
    linear-gradient(45deg, var(--checker-dark) 25%, transparent 25%, transparent 75%, var(--checker-dark) 75%, var(--checker-dark));
  background-size: 10px 10px;
  background-position: 0 0, 5px 5px;
  background-color: var(--checker-light);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  position: relative;
  cursor: pointer;
  transition: all 0.2s;
  overflow: hidden;
}

.frame-item canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
}

.frame-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.3);
}

.frame-item-number {
  position: absolute;
  top: 2px;
  left: 4px;
  font-size: 0.65rem;
  background: rgba(0,0,0,0.6);
  padding: 1px 4px;
  border-radius: 4px;
  color: white;
}

/* Right Sidebar Preview */
.preview-container {
  width: 100%;
  aspect-ratio: 1;
  background-image: linear-gradient(45deg, var(--checker-dark) 25%, transparent 25%, transparent 75%, var(--checker-dark) 75%, var(--checker-dark)),
    linear-gradient(45deg, var(--checker-dark) 25%, transparent 25%, transparent 75%, var(--checker-dark) 75%, var(--checker-dark));
  background-size: 10px 10px;
  background-position: 0 0, 5px 5px;
  background-color: var(--checker-light);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.preview-container canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
}

.playback-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.fps-control {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.fps-control input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
}

/* Modals */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  width: 400px;
  max-width: 90vw;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal.active .modal-content {
  transform: translateY(0);
}

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

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

.option-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.option-group select {
  padding: 0.5rem;
  border-radius: 6px;
  background: rgba(255,255,255,0.05);
  color: var(--text);
  border: 1px solid var(--border-color);
}
.export-info {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Utility classes */
.hidden { display: none !important; }