:root {
  --bg: #0b0d10;
  --panel: #11151b;
  --panel-dark: #07090c;
  --border: #26303a;
  --text: #e8edf2;
  --muted: #9aa6b2;
  --accent: #ff7a18;
  --accent-soft: rgba(255, 122, 24, 0.15);
  --success: #8fd18f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: radial-gradient(circle at top left, #1a1410, var(--bg) 35%);
  color: var(--text);
}

header {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 13, 17, 0.94);
}

h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: 0.03em;
}

.controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

button,
select {
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  padding: 0.5rem 0.75rem;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}

button {
  cursor: pointer;
}

button:hover,
select:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

button:active {
  transform: translateY(1px);
}

#run {
  border-color: var(--accent);
  background: var(--accent);
  color: #120804;
  font-weight: 700;
}

#run:hover {
  filter: brightness(1.08);
}

select {
  min-width: 10rem;
  cursor: pointer;
  color: var(--text);
}

select:focus {
  outline: none;
  border-color: var(--accent);
}

select option {
  background: #11151b;
  color: #e8edf2;
}

#status {
  min-width: 14rem;
  text-align: left;

  color: var(--success);
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.9rem;

  white-space: nowrap;
}}

#status::before {
  content: "> ";
  color: var(--muted);
}

main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: calc(100vh - 82px);
  padding-bottom: 3.5rem;
}

textarea,
pre {
  margin: 0;
  padding: 1rem;
  font-family: Consolas, "Courier New", monospace;
  font-size: 15px;
  line-height: 1.45;
  background: var(--panel-dark);
  color: var(--text);
  border: 0;
  outline: none;
  overflow: auto;
  tab-size: 2;
}

textarea {
  resize: none;
  border-right: 1px solid var(--border);
}

textarea:focus {
  background: #090d12;
  box-shadow: inset 0 0 0 1px var(--accent-soft);
}

.docs {
  padding: 1rem;
  border-top: 1px solid var(--border);
  background: rgba(10, 13, 17, 0.94);
}

.docs h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.docs details {
  margin-bottom: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--panel);
  overflow: hidden;
}

.docs summary {
  padding: 0.65rem 0.8rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
}

.docs summary:hover {
  background: var(--accent-soft);
}

.docs p {
  margin: 0;
  padding: 0.35rem 0.8rem 0.7rem;
  color: var(--muted);
}

.docs code {
  color: var(--accent);
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
}

.note {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 0.75rem;
  margin: 0;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: rgba(10, 13, 17, 0.88);
  color: var(--muted);
  font-size: 0.85rem;
  backdrop-filter: blur(8px);
}

@media (max-width: 800px) {
  header {
    align-items: flex-start;
  }

  .controls {
    width: 100%;
  }

  main {
    grid-template-columns: 1fr;
    height: auto;
    padding-bottom: 0;
  }

  textarea,
  pre {
    min-height: 40vh;
  }

  textarea {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .note {
    position: static;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
  }
}