:root {
  --bg: #0b1723;
  --panel: #12263a;
  --text: #e7eef6;
  --muted: #9db4c9;
  --accent: #39d2c0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at 20% 10%, #15304a, var(--bg));
  font-family: "SF Mono", Menlo, Consolas, monospace;
}

.layout {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 360px 1fr;
}

.controls {
  padding: 1rem;
  background: color-mix(in srgb, var(--panel) 90%, black);
  border-right: 1px solid #24435f;
}

.controls h1 {
  margin-top: 0;
  font-size: 1rem;
}

label {
  display: grid;
  gap: 0.4rem;
  margin: 0.8rem 0;
  color: var(--muted);
}

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

.inputRow {
  display: grid;
  grid-template-columns: 1fr 92px;
  gap: 0.5rem;
  align-items: center;
}

input[type="number"] {
  width: 100%;
  border: 1px solid #2f5778;
  background: #0c1d2d;
  color: var(--text);
  padding: 0.3rem 0.35rem;
}

output {
  color: var(--text);
  font-weight: 700;
}

.actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
}

button {
  border: 1px solid #2f5778;
  background: #163754;
  color: var(--text);
  padding: 0.5rem 0.7rem;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

#apiResult {
  white-space: pre-wrap;
  font-size: 0.75rem;
  color: var(--muted);
  background: #0b1520;
  padding: 0.5rem;
  border: 1px solid #1f374d;
  min-height: 4rem;
}

.viewport {
  position: relative;
}

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

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 60vh;
  }

  .controls {
    border-right: none;
    border-bottom: 1px solid #24435f;
  }
}