:root {
  --bg: #0b0d12;
  --panel: #12161d;
  --panel-2: #1a2030;
  --ink: #e7ecf3;
  --ink-dim: #8b94a6;
  --accent: #ffd784;
  --border: #232a38;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.4 -apple-system, BlinkMacSystemFont, "SF Pro Text", Inter, system-ui, sans-serif;
  overflow: hidden;
}

.app {
  display: grid;
  grid-template-columns: 1fr 360px;
  width: 100vw;
  height: 100vh;
}

.stage {
  position: relative;
  background: radial-gradient(ellipse at center, #181d28 0%, #0b0d12 75%);
  overflow: hidden;
}

#quilt {
  display: block;
  width: 100%;
  height: 100%;
}

.stage-hud {
  position: absolute;
  top: 14px;
  left: 14px;
  display: flex;
  gap: 10px;
  pointer-events: none;
}

.slot-status {
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border);
  color: var(--ink-dim);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.panel {
  background: var(--panel);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.panel-header {
  padding: 16px 18px 8px;
  border-bottom: 1px solid var(--border);
}

.panel-header h1 {
  margin: 0;
  font-size: 16px;
  letter-spacing: 0.02em;
}

.hint {
  margin: 6px 0 0;
  color: var(--ink-dim);
  font-size: 12px;
}

.controls {
  padding: 12px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}

.control {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--ink-dim);
}

.control span em {
  color: var(--accent);
  font-style: normal;
  margin-left: 6px;
}

.control input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.control select {
  background: var(--panel-2);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 13px;
}

.control-row {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.control-row button {
  flex: 1;
}

.swatch-row {
  gap: 12px;
}

.swatch {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px 4px 4px;
  font-size: 12px;
  color: var(--ink-dim);
  cursor: pointer;
}

.swatch input[type="color"] {
  appearance: none;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
}

.swatch input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.swatch input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 3px;
}

button {
  background: var(--panel-2);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}

button:hover {
  background: #222a3a;
  border-color: #2f3a4d;
}

button:active {
  background: #1b2230;
}

.link-btn {
  background: transparent;
  border: none;
  color: var(--accent);
  padding: 4px 6px;
  font-size: 12px;
}

.link-btn:hover {
  background: rgba(255, 215, 132, 0.08);
}

.pool-header {
  padding: 12px 18px 6px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.pool-header h2 {
  margin: 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

.pool {
  flex: 1;
  overflow-y: auto;
  padding: 4px 12px 18px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  align-content: start;
}

.pool .card {
  position: relative;
  aspect-ratio: 488 / 680;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}

.pool .card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pool .card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 6px 20px -8px rgba(255, 215, 132, 0.55);
}

.pool .card.placed::after {
  content: "✓";
  position: absolute;
  inset: auto 6px 6px auto;
  background: var(--accent);
  color: #1b1408;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
}

.pool .card .name {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 6px 4px;
  font-size: 10px;
  color: #fff;
  background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
  text-shadow: 0 1px 2px rgba(0,0,0,0.6);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}