Build a paint / drawing web app as a single page in this directory: index.html, style.c…

claude-codeclaude-fable-5 · 14 steps · 5m 14s · 3 filessession 72758294-109@agentsage

Build a paint / drawing web app as a single page in this directory: index.html, style.css, paint.js (vanilla JS, no deps, HTML canvas). Freehand brush with adjustable size and color, a color palette plus a custom color picker, an eraser, a clear-canvas button, undo/redo, and a "save as PNG" download. Show the current brush preview. Polished dark theme, responsive canvas. Make it feel good to draw on.

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step 05 / 14

style.csschange 1/1

:root {
  --bg: #0d0f13;
  --panel: #161920;
  --panel-2: #1e222c;
  --border: #2a2f3a;
  --text: #e6e8ee;
  --muted: #8b91a0;
  --accent: #7c8cff;
  --accent-strong: #5b6cf5;
  --accent-soft: rgba(124, 140, 255, 0.16);
  --danger: #f26d6d;
}
 
* {
  box-sizing: border-box;
}
 
html,
body {
  height: 100%;
  margin: 0;
}
 
body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  touch-action: manipulation;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}
 
/* ---------- Toolbar ---------- */
 
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
 
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 650;
  font-size: 15px;
  letter-spacing: 0.2px;
  margin-right: 2px;
}
 
.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: conic-gradient(from 40deg, #ff6b6b, #ffc95c, #5ee38a, #56c8ff, #b28bff, #ff6b6b);
  box-shadow: 0 0 10px rgba(124, 140, 255, 0.5);
}
 
.sep {
  width: 1px;
  height: 26px;
  background: var(--border);
}
 
.spacer {
  flex: 1;
}
 
.group {
  display: flex;
  align-items: center;
  gap: 6px;
}
 
/* ---------- Buttons ---------- */
 
.btn {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}
 
.btn svg {
  width: 18px;
  height: 18px;
}
 
.btn:hover {
  background: var(--panel-2);
  color: var(--text);
}
 
.btn:active {
  transform: scale(0.93);
}
 
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
 
.btn.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(124, 140, 255, 0.4);
}
 
.btn:disabled {
  opacity: 0.32;
  pointer-events: none;
}
 
.btn.danger:hover {
  background: rgba(242, 109, 109, 0.14);
  color: var(--danger);
}
 
.btn.primary {
  background: var(--accent-strong);
  color: #fff;
}
 
.btn.primary:hover {
  background: var(--accent);
  color: #fff;
}
 
/* ---------- Brush size ---------- */
 
.size-group {
  gap: 10px;
}
 
.brush-preview {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #0a0c10;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  overflow: hidden;
}
 
#brush-dot {
  border-radius: 50%;
  transition: width 0.12s ease, height 0.12s ease, background 0.12s ease;
}
 
.size-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--muted);
  min-width: 2ch;
  text-align: right;
}
 
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 120px;
  height: 4px;
  border-radius: 2px;
  background: #2c3140;
  cursor: pointer;
}
 
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #10121a;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
  transition: transform 0.12s ease;
}
 
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}
 
input[type="range"]::-moz-range-track {
  height: 4px;
  border-radius: 2px;
  background: #2c3140;
}
 
input[type="range"]::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #10121a;
}
 
/* ---------- Palette ---------- */
 
.palette {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
 
.swatch {
  width: 22px;
  height: 22px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
 
.swatch:hover {
  transform: scale(1.18);
}
 
.swatch:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
 
.swatch.selected {
  box-shadow: 0 0 0 2px var(--panel), 0 0 0 4px var(--accent);
}
 
.custom-color {
  position: relative;
  width: 26px;
  height: 26px;
  margin-left: 4px;
  border-radius: 50%;
  background: conic-gradient(#ff5c5c, #ffc95c, #6ee87d, #56c8ff, #b28bff, #ff5c9d, #ff5c5c);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
 
.custom-color:hover {
  transform: scale(1.12);
}
 
.custom-color.selected {
  box-shadow: 0 0 0 2px var(--panel), 0 0 0 4px var(--accent);
}
 
#custom-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #111827;
  border: 2px solid #10121a;
  pointer-events: none;
}
 
.custom-color input[type="color"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  border: none;
  padding: 0;
}
 
/* ---------- Canvas ---------- */
 
.canvas-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  padding: 16px;
  overflow: hidden;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
}
 
#paint-canvas {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 2px 8px rgba(0, 0, 0, 0.35);
  cursor: none;
  touch-action: none;
}
 
#cursor-ring {
  position: absolute;
  display: none;
  pointer-events: none;
  border-radius: 50%;
  border: 1.5px solid rgba(20, 22, 28, 0.85);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.85), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
  transform: translate(-50%, -50%);
  z-index: 5;
}
 
#cursor-ring.eraser {
  border-style: dashed;
}
 
/* ---------- Small screens ---------- */
 
@media (max-width: 720px) {
  .toolbar {
    gap: 8px;
    padding: 8px 10px;
  }
 
  .brand-name,
  .sep {
    display: none;
  }
 
  input[type="range"] {
    width: 84px;
  }
 
  .canvas-wrap {
    padding: 10px;
  }
}
 

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