:root {
  color-scheme: dark;
  --bg: #05070d;
  --panel: #0d1524;
  --panel-border: #2d4b72;
  --text: #d8eeff;
  --muted: #7ea2bf;
  --accent: #8df9ff;
  --accent-2: #ff5ec9;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 20% 12%, #1a2944 0, transparent 44%),
    radial-gradient(circle at 82% 0%, #2d1a42 0, transparent 42%),
    var(--bg);
  color: var(--text);
}

.app {
  width: min(980px, 94vw);
  margin: 2rem auto;
  display: grid;
  gap: 1rem;
}

.panel {
  background: linear-gradient(180deg, #111e34, var(--panel));
  border: 2px solid var(--panel-border);
  border-radius: 14px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06), 0 12px 32px rgba(0, 0, 0, 0.35);
}

.topbar {
  padding: 1rem 1.2rem 1.1rem;
}

.back {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.92rem;
}

h1 {
  margin: 0.45rem 0 0.3rem;
  font-size: clamp(1.35rem, 3vw, 2rem);
  letter-spacing: 0.04em;
}

.topbar p {
  margin: 0;
  color: var(--muted);
}

.studio {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  grid-template-columns: minmax(300px, 1.05fr) minmax(260px, 0.95fr);
}

.canvas-wrap {
  position: relative;
  border: 2px solid #375880;
  border-radius: 12px;
  background: #04070f;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
}

canvas {
  width: min(100%, 520px);
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.05) 0px,
    rgba(255,255,255,0.05) 1px,
    transparent 1px,
    transparent 3px
  );
  pointer-events: none;
  mix-blend-mode: overlay;
  opacity: 0.37;
}

.controls {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr 1fr;
}

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.83rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #8bb0d1;
}

input,
select,
button {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #35587f;
  background: #091123;
  color: var(--text);
  font: inherit;
  font-size: 0.98rem;
  padding: 0.62rem 0.75rem;
}

input[type="range"] {
  padding: 0.2rem 0;
}

.actions {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.btn {
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: #8dd6ff;
}

.btn.ghost {
  background: #0a1730;
}

.btn.primary {
  background: linear-gradient(180deg, #39c8ff, #1f73d7);
  border-color: #79d7ff;
  color: #00101f;
  font-weight: 700;
}

.tips {
  padding: 0.8rem 1rem;
}

.tips ul {
  margin: 0;
  padding-left: 1.1rem;
  color: #a1c4e2;
  display: grid;
  gap: 0.34rem;
}

@media (max-width: 820px) {
  .studio {
    grid-template-columns: 1fr;
  }

  .actions {
    grid-template-columns: 1fr;
  }
}