:root {
  color-scheme: light;
  --bg: #f6f4ef;
  --ink: #1f2933;
  --muted: #65717c;
  --line: #d8d2c5;
  --panel: #fffdf8;
  --accent: #0f766e;
  --warn: #b45309;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", Arial, sans-serif;
}

button,
textarea {
  font: inherit;
}

button {
  min-width: 44px;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
}

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

.shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 16px;
}

#health {
  margin-top: 4px;
  color: var(--muted);
}

.danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
  gap: 16px;
  padding-top: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.video {
  min-height: 360px;
}

pre {
  margin: 12px 0 0;
  padding: 12px;
  min-height: 120px;
  overflow: auto;
  white-space: pre-wrap;
  background: #f1eee6;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.pad {
  display: grid;
  grid-template-columns: repeat(3, 64px);
  grid-template-rows: repeat(3, 54px);
  gap: 8px;
  justify-content: center;
  margin-top: 16px;
}

.pad button:first-child {
  grid-column: 2;
}

.pad button:nth-child(2) {
  grid-column: 1;
  grid-row: 2;
}

.pad button:nth-child(3) {
  grid-column: 2;
  grid-row: 2;
}

.pad button:nth-child(4) {
  grid-column: 3;
  grid-row: 2;
}

.pad button:nth-child(5) {
  grid-column: 2;
  grid-row: 3;
}

.servo-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 16px;
}

dl {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
}

dl div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  text-align: right;
}

textarea {
  width: 100%;
  min-height: 90px;
  resize: vertical;
  margin-top: 12px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

#runTaskBtn {
  width: 100%;
  margin-top: 10px;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

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

  .shell {
    width: min(100vw - 20px, 680px);
    padding: 16px 0;
  }
}