:root {
  --bg: #f4f2ef;
  --card: #ffffff;
  --text: #1d1b19;
  --muted: #6b655f;
  --line: #d9d4ce;
  --accent: #e8642c;
  --accent-text: #ffffff;
  --ok: #1d7a3a;
  --bad: #b3261e;
  --code-bg: #f1ede8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121110;
    --card: #1d1b19;
    --text: #ece8e3;
    --muted: #a39b93;
    --line: #3a3632;
    --accent: #f07a35;
    --accent-text: #160d06;
    --ok: #5cc27e;
    --bad: #ff8a80;
    --code-bg: #26231f;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
.top { padding: 28px 16px 8px; text-align: center; }
.top img { height: 48px; width: auto; }
.card {
  max-width: 720px;
  margin: 16px auto;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
}
@media (max-width: 760px) { .card { margin: 12px 16px; padding: 18px; } }
h1 { margin: 0 0 8px; font-size: 1.5rem; }
h2 { margin: 0 0 8px; font-size: 1.2rem; }
#intro, .muted { color: var(--muted); }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 560px) { .row { grid-template-columns: 1fr; } }
label { display: block; margin: 12px 0 0; font-weight: 600; font-size: .95rem; }
input {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
input[aria-invalid="true"] { border-color: var(--bad); }
.mono { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; letter-spacing: .02em; }

button {
  margin-top: 18px;
  padding: 11px 22px;
  font: inherit;
  font-weight: 700;
  color: var(--accent-text);
  background: var(--accent);
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}
button:disabled { opacity: .6; cursor: default; }
button.secondary { color: var(--text); background: transparent; border: 1px solid var(--line); }

.error { margin: 12px 0 0; color: var(--bad); font-weight: 600; }
.ok { color: var(--ok); }
.bad { color: var(--bad); }

.spinner {
  display: inline-block;
  width: 22px; height: 22px;
  margin-right: 10px;
  vertical-align: -5px;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.product {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.product img { width: 120px; height: 120px; object-fit: cover; border-radius: 6px; flex: none; }
.product .info { min-width: 0; flex: 1; }
.product h3 { margin: 0 0 8px; font-size: 1.1rem; }
.field { margin: 8px 0 0; }
.field small { display: block; color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.field code {
  display: block;
  padding: 6px 8px;
  background: var(--code-bg);
  border-radius: 4px;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  overflow-wrap: anywhere;
}
.downloads { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.downloads a {
  padding: 8px 14px;
  font-weight: 700;
  color: var(--accent-text);
  background: var(--accent);
  border-radius: 6px;
  text-decoration: none;
}
@media (max-width: 480px) { .product { flex-direction: column; } .product img { width: 100%; height: auto; } }

.bottom { padding: 8px 16px 32px; text-align: center; font-size: .9rem; }
.bottom a { color: var(--muted); }