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

pigpt-5.5 · 12 steps · 2m 02s · 3 filessession d4130bc2-0e3@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 10 / 12

style.csschange 1/1

:root {
  color-scheme: dark;
  --bg: #080a12;
  --panel: rgba(21, 25, 40, 0.78);
  --panel-strong: rgba(30, 36, 58, 0.95);
  --line: rgba(255, 255, 255, 0.11);
  --text: #f4f7fb;
  --muted: #9aa6bd;
  --accent: #7c5cff;
  --accent-2: #22d3ee;
  --danger: #ff5570;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}
 
* { box-sizing: border-box; }
 
html, body { height: 100%; }
 
body {
  margin: 0;
  min-height: 100%;
  overflow: hidden;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 10%, rgba(124, 92, 255, 0.28), transparent 30rem),
    radial-gradient(circle at 88% 18%, rgba(34, 211, 238, 0.18), transparent 28rem),
    linear-gradient(135deg, #070912 0%, #111626 48%, #080a12 100%);
}
 
button, input { font: inherit; }
button { cursor: pointer; }
 
.app {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: clamp(14px, 2vw, 28px);
}
 
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
 
.eyebrow {
  margin: 0 0 4px;
  color: var(--accent-2);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
 
h1 {
  margin: 0;
  font-size: clamp(1.55rem, 4vw, 2.45rem);
  line-height: 1;
  letter-spacing: -0.055em;
}
 
.actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }
 
button {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 14px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease, opacity 150ms ease;
}
 
button:hover:not(:disabled) { transform: translateY(-1px); border-color: rgba(255,255,255,.22); }
button:active:not(:disabled) { transform: translateY(0); }
button:disabled { opacity: 0.4; cursor: not-allowed; }
 
.primary {
  border: 0;
  background: linear-gradient(135deg, var(--accent), #b35cff);
  box-shadow: 0 12px 28px rgba(124, 92, 255, 0.28);
}
 
.danger { color: #ffdbe2; background: rgba(255, 85, 112, 0.14); }
.ghost { background: rgba(255, 255, 255, 0.055); }
 
.workspace {
  min-height: 0;
  flex: 1;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 18px;
}
 
.tools {
  min-height: 0;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
 
.tool-card {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.055);
}
 
.label {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}
 
.preview-wrap {
  display: grid;
  place-items: center;
  height: 130px;
  border-radius: 18px;
  background:
    linear-gradient(45deg, rgba(255,255,255,.04) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255,255,255,.04) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255,255,255,.04) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255,255,255,.04) 75%);
  background-size: 22px 22px;
  background-position: 0 0, 0 11px, 11px -11px, -11px 0;
}
 
#preview { width: 96px; height: 96px; }
 
.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.segmented button { padding: 11px 8px; }
.segmented button.active {
  border-color: rgba(124, 92, 255, 0.8);
  background: rgba(124, 92, 255, 0.24);
  box-shadow: inset 0 0 0 1px rgba(124, 92, 255, 0.18);
}
 
input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}
 
.palette {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 9px;
  margin-bottom: 14px;
}
 
.swatch {
  aspect-ratio: 1;
  min-width: 0;
  padding: 0;
  border: 2px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.18), 0 8px 16px rgba(0,0,0,.18);
}
 
.swatch.active { border-color: white; transform: scale(1.06); }
 
.custom-color {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-weight: 700;
}
 
input[type="color"] {
  width: 58px;
  height: 42px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.08);
}
 
.canvas-shell {
  position: relative;
  min-height: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 28px;
  background: #f9fbff;
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(0,0,0,.04);
}
 
#canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}
 
.hint {
  position: absolute;
  left: 16px;
  bottom: 14px;
  pointer-events: none;
  padding: 8px 11px;
  border-radius: 999px;
  color: rgba(15, 23, 42, 0.72);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
  font-size: 0.78rem;
  font-weight: 700;
  backdrop-filter: blur(10px);
}
 
@media (max-width: 820px) {
  body { overflow: auto; }
  .app { min-height: 100%; height: auto; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .actions { width: 100%; justify-content: stretch; }
  .actions button { flex: 1; padding-inline: 10px; }
  .workspace { grid-template-columns: 1fr; }
  .tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: visible; }
  .preview-card { grid-row: span 2; }
  .canvas-shell { height: min(68vh, 680px); min-height: 430px; }
}
 
@media (max-width: 560px) {
  .tools { grid-template-columns: 1fr; }
  .preview-card { grid-row: auto; }
  .canvas-shell { min-height: 360px; border-radius: 22px; }
  .hint { display: none; }
}
 

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#css #gpt #gpt-5.5 #graphics #html #javascript #pi #quick #ui

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