:root {
  --bg: #0b0f19;
  --panel: rgba(255, 255, 255, 0.06);
  --panelBorder: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.7);
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(1200px 500px at 18% 18%, rgba(54, 80, 255, 0.28), transparent 55%),
    radial-gradient(900px 460px at 76% 30%, rgba(0, 220, 170, 0.20), transparent 60%),
    radial-gradient(900px 520px at 58% 90%, rgba(255, 192, 0, 0.10), transparent 55%),
    var(--bg);
  color: var(--text);
}

.app {
  max-width: 1160px;
  margin: 0 auto;
  padding: 28px 18px 38px;
  display: grid;
  gap: 16px;
  grid-template-columns: 360px 1fr;
  align-items: start;
}

@media (max-width: 980px) {
  .app { grid-template-columns: 1fr; }
}

.card {
  background: var(--panel);
  border: 1px solid var(--panelBorder);
  border-radius: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.panel { padding: 16px 16px 14px; }

.panel h1 {
  font-size: 16px;
  margin: 0 0 10px;
  letter-spacing: 0.2px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 10px;
}

.field { display: flex; flex-direction: column; gap: 6px; }

.field label {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.2px;
}

input[type="number"],
input[type="text"],
select,
textarea {
  width: 100%;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 90px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New",
    monospace;
  line-height: 1.35;
}

input[type="range"] { width: 100%; }

.radioGroup {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.radioPill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.28);
  user-select: none;
  cursor: pointer;
}

.radioPill input[type="radio"] {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: rgba(255, 255, 255, 0.85);
}

.radioPill span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.86);
}

.toggleLabel {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.28);
  user-select: none;
  cursor: pointer;
}

.toggleLabel input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: rgba(255, 255, 255, 0.85);
}

.toggleLabel span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.86);
}

.help {
  margin-top: 10px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.68);
  line-height: 1.45;
}

.actions {
  margin-top: 12px;
  display: flex;
  gap: 10px;
}

button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.10);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: 0.2px;
}

button:hover { background: rgba(255, 255, 255, 0.14); }
button:active { transform: translateY(1px); }

.btnSmall {
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
}

.stage {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stageHeader {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.stageHeaderRight {
  display: flex;
  align-items: center;
  gap: 10px;
}

.stageHeader .title {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.86);
  margin: 0;
}

.stageHeader .meta {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.66);
  white-space: nowrap;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.22);
}

canvas:hover {
  cursor: none;
}

/* Fullscreen tweaks */
canvas:fullscreen {
  width: 100vw !important;
  height: 100vh !important;
  border: none !important;
  border-radius: 0 !important;
  background: transparent !important;
}