:root {
  color-scheme: only light;
  --ink: #1c1b19;
  --soft-ink: #3d3a34;
  --accent: #cf5a2a;
  --panel: #f5f0e5;
  --panel-edge: #e0d7c5;
  --glow: rgba(207, 90, 42, 0.22);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 15%, #f8e9d8 0%, transparent 60%),
    radial-gradient(circle at 85% 20%, #f2c9b5 0%, transparent 55%),
    linear-gradient(135deg, #fefaf2 0%, #f3efe6 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(0, 0, 0, 0.08) 0.5px, transparent 0.5px);
  background-size: 18px 18px;
  opacity: 0.2;
  pointer-events: none;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  gap: 32px;
}

.hero {
  display: grid;
  gap: 12px;
  animation: rise 0.7s ease forwards;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  color: var(--soft-ink);
  margin: 0;
}

h1 {
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  font-size: clamp(2rem, 3vw, 3.2rem);
  margin: 0;
}

.subtitle {
  max-width: 540px;
  margin: 0;
  color: var(--soft-ink);
  line-height: 1.5;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 28px;
  padding: 28px;
  display: grid;
  gap: 24px;
  box-shadow: 0 30px 80px rgba(16, 14, 10, 0.12);
  animation: rise 0.8s ease forwards;
}

.controls {
  display: grid;
  gap: 16px;
}

.control {
  display: grid;
  gap: 8px;
  font-weight: 600;
  color: var(--soft-ink);
  animation: fadeIn 0.7s ease forwards;
}

.control span {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.value {
  font-weight: 700;
  color: var(--accent);
}

.control input[type="file"] {
  border: 1px solid var(--panel-edge);
  padding: 12px;
  border-radius: 12px;
  background: #fff;
}

.control select {
  border: 1px solid var(--panel-edge);
  padding: 10px 12px;
  border-radius: 12px;
  background: #fff;
  font-weight: 600;
  color: var(--ink);
}

.control input[type="range"] {
  accent-color: var(--accent);
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: fadeIn 0.8s ease forwards;
}

button {
  border: none;
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(28, 27, 25, 0.2);
}

#applyBtn {
  background: var(--accent);
  box-shadow: 0 10px 25px var(--glow);
}


.stage {
  display: grid;
  gap: 12px;
}

.canvas-wrap {
  position: relative;
  width: min(100%, 720px);
  margin: 0 auto;
  border-radius: 18px;
  border: 1px solid rgba(28, 27, 25, 0.15);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.6);
  background: #fff;
  overflow: hidden;
}

#overlayCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.65;
  mix-blend-mode: multiply;
  z-index: 2;
  image-rendering: pixelated;
  cursor: grab;
}

#svgLayer {
  position: relative;
  width: 100%;
  height: 100%;
  z-index: 1;
}

#svgLayer svg {
  width: 100%;
  height: 100%;
  display: block;
  text-rendering: geometricPrecision;
}


.status {
  text-align: center;
  color: var(--soft-ink);
  margin: 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (min-width: 900px) {
  .panel {
    grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
    align-items: start;
  }

  .controls {
    position: sticky;
    top: 24px;
  }
}

@media (max-width: 720px) {
  .canvas-wrap {
    width: 100%;
  }
}

.tab-panel:not([hidden]) { display: grid; gap: 16px; }
[hidden] { display: none !important; }
#overlayCanvas, #svgLayer.drawing { touch-action: none; }
#svgLayer.drawing { cursor: crosshair; user-select: none; }
#drawColors button[aria-pressed="true"] { outline: 3px solid var(--accent); outline-offset: 2px; }
button:disabled { opacity: 0.4; cursor: default; transform: none; box-shadow: none; }
button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }


@page { size: A4 portrait; margin: 0; }
@media print {
  .hero, .controls, .status, #overlayCanvas { display: none !important; }
  .page, .panel, .stage, .canvas-wrap { display: block !important; margin: 0 !important; padding: 0 !important; max-width: none !important; border: 0 !important; box-shadow: none !important; background: #fff !important; }
  .canvas-wrap { width: 210mm !important; border-radius: 0 !important; overflow: visible !important; }
  #svgLayer svg { width: 210mm !important; height: 297mm !important; }
}

#colorCounts { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 8px; }
#controlTabs button { background: var(--panel-edge); color: var(--ink); }
#controlTabs button[aria-pressed="true"] { background: var(--accent); color: #fff; }
#randomPatternControls { border: 1px solid var(--panel-edge); border-radius: 16px; padding: 14px; }
#randomPatternControls label { display: grid; gap: 8px; margin-top: 10px; }
#randomPatternControls input[type="text"] { border: 1px solid var(--panel-edge); border-radius: 12px; padding: 10px 12px; }