:root {
  color-scheme: light;
  --bg: #f3efe8;
  --panel: #fffdf8;
  --ink: #1e2430;
  --muted: #5d6778;
  --line: #d9d0c2;
  --accent: #0f766e;
  --accent-strong: #115e59;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(15, 118, 110, 0.12), transparent 28%),
    linear-gradient(180deg, #f8f5ee 0%, var(--bg) 100%);
  color: var(--ink);
}
.shell {
  width: min(920px, calc(100% - 2rem));
  margin: 2rem auto 3rem;
  display: grid;
  gap: 1rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.25rem;
  box-shadow: 0 12px 35px rgba(30, 36, 48, 0.08);
}
.hero { padding: 2rem; }
.eyebrow {
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-strong);
  font-size: 0.8rem;
}
h1, h2, p { margin-top: 0; }
a.button, button {
  display: inline-block;
  border: 0;
  border-radius: 999px;
  padding: 0.8rem 1.1rem;
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}
a.button:hover, button:hover { background: var(--accent-strong); }
label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
textarea {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 0.9rem;
  font: inherit;
  margin-bottom: 0.75rem;
  resize: vertical;
}
.command-list, .device-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.command-list li, .device-list li {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem;
  background: #fff;
}
.row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
}
.badge {
  background: #d1fae5;
  color: #065f46;
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  font-size: 0.85rem;
}
small { color: var(--muted); }
@media (max-width: 640px) {
  .shell { width: min(100% - 1rem, 920px); margin-top: 1rem; }
  .card, .hero { padding: 1rem; }
}