:root {
  --bg: #f8f9fa;
  --fg: #22223b;
  --panel: #fff;
  --border: #c9c9c9;
  --button-bg: #e0e0e0;
  --button-fg: #22223b;
}
body.dark {
  --bg: #232634;
  --fg: #f8f9fa;
  --panel: #2d3142;
  --border: #44485a;
  --button-bg: #35394a;
  --button-fg: #f8f9fa;
}
body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
}
.container {
  max-width: 1000px;
  margin: 40px auto;
  background: var(--panel);
  border-radius: 18px;
  box-shadow: 0 8px 32px rgba(60, 80, 120, 0.15);
  padding: 32px 24px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  border-color: var(--border);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
  margin-left: 190px;
}
header h1 {
  text-align: center;
  font-size: 2.2rem;
  color: #3a4668;
  margin: 0 0 10px 0;
  letter-spacing: 1px;
}
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  align-items: center;
  background: var(--panel);
  border-radius: 12px;
  padding: 12px 10px;
  box-shadow: 0 2px 8px rgba(60, 80, 120, 0.07);
  animation: fadeIn 0.7s;
  border-color: var(--border);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.tool, #clearBtn, #imgBtn, #saveBtn, #themeToggle {
  background: var(--button-bg);
  color: var(--button-fg) !important;
  border: 1px solid var(--border);
  font-weight: bold;
  font-size: 20px;
  transition: background 0.3s, color 0.3s, border 0.3s;
}
.tool.selected {
  background: var(--fg);
  color: var(--bg) !important;
}
.tool.selected, .tool:hover, #clearBtn:hover, #imgBtn:hover, #saveBtn:hover {
  background: #e0e7ef;
  box-shadow: 0 4px 16px rgba(60, 80, 120, 0.13);
  transform: translateY(-2px) scale(1.07);
}
#colorPicker, #sizePicker {
  margin: 0 8px;
  accent-color: #3a4668;
  cursor: pointer;
}
#sizePicker {
  width: 80px;
}
.canvas-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--panel);
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(60, 80, 120, 0.09);
  padding: 18px;
  animation: fadeIn 1.2s;
  border-color: var(--border);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
canvas {
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 2px 12px rgba(60, 80, 120, 0.07);
  transition: box-shadow 0.2s;
  cursor: crosshair;
}
canvas:active {
  box-shadow: 0 4px 24px rgba(60, 80, 120, 0.15);
}
button, input, select {
  background: var(--button-bg);
  color: var(--button-fg);
  border: 1px solid var(--border);
  transition: background 0.3s, color 0.3s, border 0.3s;
}
button.selected {
  background: var(--fg);
  color: var(--bg);
}
.tool-panel { display: none; margin: 8px 0 0 0; padding: 8px 12px; background: var(--panel); border-radius: 8px; box-shadow: 0 2px 8px rgba(60,80,120,0.07); }
.tool-panel label { margin-right: 18px; font-size: 15px; color: var(--fg); }
#tool-settings { display: flex; gap: 16px; flex-wrap: wrap; }
.tool-panel input[type=range] { vertical-align: middle; }
.tool-panel input[type=color], .tool-panel input[type=number] { margin-left: 6px; }
#zoom-settings button { margin-left: 6px; padding: 2px 10px; font-size: 16px; }
#zoomLevel { font-weight: bold; margin: 0 6px; }
#layers-panel {
  float: left;
  width: 170px;
  min-height: 400px;
  background: var(--panel);
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(60,80,120,0.08);
  margin: 24px 18px 0 0;
  padding: 12px 8px 8px 8px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
}
#layers-list {
  flex: 1 1 auto;
  min-height: 120px;
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.layer-item {
  display: flex;
  align-items: center;
  background: var(--bg);
  border-radius: 6px;
  padding: 4px 4px 4px 6px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border 0.2s;
}
.layer-item.active {
  border: 2px solid var(--fg);
  background: var(--button-bg);
}
.layer-item input[type="text"] {
  width: 60px;
  margin-right: 4px;
  border-radius: 3px;
  border: 1px solid var(--border);
  padding: 1px 3px;
}
.layer-item input[type="range"] {
  width: 50px;
  margin: 0 4px;
}
.layer-item label {
  font-size: 13px;
  margin: 0 2px 0 0;
}
.layer-item input[type="checkbox"] {
  margin-right: 2px;
}
#addLayerBtn, #removeLayerBtn, #layerUpBtn, #layerDownBtn {
  margin: 2px 2px 0 0;
  padding: 2px 8px;
  font-size: 15px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--button-bg);
  color: var(--button-fg);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
#addLayerBtn:hover, #removeLayerBtn:hover, #layerUpBtn:hover, #layerDownBtn:hover {
  background: var(--fg);
  color: var(--bg);
}
@media (max-width: 1000px) {
  .container { max-width: 98vw; padding: 8px; }
  .canvas-wrap { padding: 4vw; }
  canvas { width: 90vw; height: 60vw; }
}
@media (max-width: 900px) {
  #layers-panel { float: none; width: 100%; margin: 0 0 12px 0; flex-direction: row; min-height: unset; }
  #layers-list { flex-direction: row; gap: 4px; min-height: unset; }
  .container { margin-left: 0; }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
} 
.vertical-toolbar {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  width: 60px !important;
  min-width: 60px !important;
  gap: 8px;
  background: var(--panel);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(60,80,120,0.07);
  padding: 12px 0;
  margin: 0 12px 0 0;
}
#main-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1 1 auto;
}
#color-palette {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin: 12px 0 0 0;
}
.color-btn.selected {
  outline: 2px solid #2196f3;
}