/* Minimal UI, relying on shared theme variables from /style/theme.css */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font: 14px/1.4 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

.app {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0;
  height: 100vh;
}

.sidebar { background: var(--bg-muted); border-right: 1px solid var(--border); padding: 16px; overflow: auto; }

.sidebar h1 { font-size: 18px; margin: 0 0 4px; }
.sidebar .tag { color: var(--text-muted); margin: 0 0 12px; }

.panel { border-top: 1px solid var(--border); padding-top: 12px; margin-top: 12px; }
.panel h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); margin: 8px 0 10px; }

.control { margin: 10px 0; }
.control label { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.control input[type=range] { width: 100%; }
.control select { width: 100%; padding: 6px 8px; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 6px; }
.control input[type=text] { width: 100%; padding: 6px 8px; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 6px; }

.file input[type=file] { display: block; width: 100%; margin-top: 6px; }

.buttons { display: flex; flex-wrap: wrap; gap: 8px; }
button { padding: 8px 10px; background: var(--accent); color: var(--bg); border: 0; border-radius: 6px; cursor: pointer; font-weight: 600; }
button.secondary { background: var(--accent-weak); color: var(--text); }
button:disabled { opacity: .6; cursor: default; }

.inline-label { display: inline-flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: 12px; margin-left: 6px; }
.inline-range { width: 160px; vertical-align: middle; }
/* removed inline-toggle (hover preview) */

.preview { position: relative; display: grid; padding: 0; }
.canvas-wrap { position: relative; display: grid; place-items: center; width: 100%; height: 100vh; }

canvas { max-width: 100%; max-height: 100%; image-rendering: auto; background: var(--bg-muted); }
.hint { position: absolute; color: var(--text-muted); font-size: 13px; pointer-events: none; }

.wb-cursor { position: absolute; border: 1px dashed var(--accent); border-radius: 50%; pointer-events: none; box-shadow: 0 0 0 2px rgba(0,0,0,0.15) inset; }
.wb-cursor::before, .wb-cursor::after { content: ""; position: absolute; left: 50%; top: 50%; background: var(--accent); opacity: 0.85; }

.color-result { margin: 12px 0; padding: 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; }
.color-preview { width: 48px; height: 48px; border: 1px solid var(--border); border-radius: 6px; margin-bottom: 8px; }
.color-values { font-family: monospace; font-size: 12px; color: var(--text-muted); }
.color-values span { color: var(--text); }

.color-circle { position: absolute; border: 2px solid var(--accent); border-radius: 50%; pointer-events: none; box-shadow: 0 0 0 1px rgba(255,255,255,0.8), 0 0 0 3px rgba(0,0,0,0.3); }
.wb-cursor::before { width: 18px; height: 1px; transform: translate(-50%, -50%); }
.wb-cursor::after  { width: 1px; height: 18px; transform: translate(-50%, -50%); }

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .sidebar { grid-row: 1; }
  .preview { grid-row: 2; }
}