:root {
  color-scheme: light;
  --page: #f4f4f5;
  --panel: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #d1d5db;
  --button: #111827;
  --button-text: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Everyday Sans, Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--page);
  color: var(--text);
}

.app {
  width: min(1180px, calc(100vw - 32px));
  margin: 32px auto;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 12px 40px rgba(17, 24, 39, 0.08);
}

h1, h2 { margin: 0 0 10px; line-height: 1.1; }
.subhead, .hint { color: var(--muted); }
.subhead { margin: 0 0 24px; }
.hint { display: block; margin-top: 6px; font-size: 13px; }

label {
  display: block;
  margin: 18px 0;
  font-weight: 700;
}

input {
  width: 100%;
  margin-top: 8px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font: inherit;
  background: #fff;
  color: var(--text);
}

.grid.two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.hex-row {
  display: grid;
  grid-template-columns: 1fr 58px;
  gap: 10px;
  align-items: center;
}

.hex-row input[type="color"] {
  height: 48px;
  padding: 4px;
  cursor: pointer;
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 22px;
}

button {
  appearance: none;
  border: 1px solid var(--button);
  border-radius: 12px;
  background: transparent;
  color: var(--button);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 12px 16px;
}

button.primary {
  background: var(--button);
  color: var(--button-text);
}

button:disabled { opacity: 0.6; cursor: wait; }

.message {
  min-height: 22px;
  margin-top: 10px;
  color: var(--muted);
  font-weight: 700;
}
.message.error { color: #b91c1c; }
.message.success { color: #047857; }

.preview-panel { min-width: 0; }
.preview-wrap {
  width: 100%;
  max-height: 78vh;
  overflow: auto;
  display: grid;
  place-items: center;
  padding: 18px;
  border-radius: 16px;
  background: repeating-conic-gradient(#e5e7eb 0% 25%, #f9fafb 0% 50%) 50% / 24px 24px;
}

canvas {
  display: block;
  width: min(100%, 400px);
  height: auto;
  box-shadow: 0 10px 28px rgba(17, 24, 39, 0.20);
}

@media (max-width: 850px) {
  .app { grid-template-columns: 1fr; }
}


/* Mobile drag fix: keep the page from scrolling while repositioning the preview artwork/text. */
.preview-wrap { overscroll-behavior: contain; }
canvas, #previewCanvas { touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
body.dragging-preview { overflow: hidden; }