:root {
  --bg: #f6f7f9; --card: #fff; --text: #14181f; --muted: #5b6472; --line: #e3e6eb;
  --accent: #0f766e; --accent-ink: #fff; --danger: #b42318; --code-bg: #ecfdf5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116; --card: #171b22; --text: #e8ebf0; --muted: #9aa3b1; --line: #2a303a;
    --accent: #2dd4bf; --accent-ink: #062b27; --danger: #f97066; --code-bg: #0b2a26;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 560px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: 26px; margin: 0; }
.tagline { color: var(--muted); margin: 0 0 20px; }
.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tabs button { flex: 1; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin-bottom: 16px; }
.card h2 { font-size: 18px; margin: 0 0 8px; }
.muted { color: var(--muted); font-size: 14px; }
button, .button { font: inherit; font-weight: 600; border-radius: 10px; padding: 10px 16px; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--text); text-decoration: none; display: inline-block; }
button.primary, .button.primary, .tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button:disabled { opacity: .5; cursor: default; }
input[type=text] { font: inherit; width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg); color: var(--text); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.qr { display: block; margin: 12px auto; width: 240px; max-width: 100%; height: auto; background: #fff; border-radius: 8px; }
.link { word-break: break-all; font-size: 13px; color: var(--muted); }
.code { font: 700 34px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: 2px;
  background: var(--code-bg); border-radius: 10px; padding: 8px 14px; display: inline-block; margin: 6px 0; }
.drop { display: block; margin: 12px 0; border: 2px dashed var(--line); border-radius: 12px; padding: 24px; text-align: center; cursor: pointer; }
.drop.over { border-color: var(--accent); }
progress { width: 100%; height: 10px; accent-color: var(--accent); }
ul.files { padding-left: 20px; margin: 8px 0; }
.error { color: var(--danger); }
.status { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); flex: none; }
.dot.on { background: #12b76a; }
dialog { border: 1px solid var(--line); border-radius: 14px; background: var(--card); color: var(--text);
  max-width: min(480px, calc(100vw - 32px)); padding: 20px; }
dialog::backdrop { background: rgb(0 0 0 / .45); }
a { color: var(--accent); }
[hidden] { display: none !important; }

/* Navigasi & halaman informasi */
.nav { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; flex-wrap: wrap; }
.nav .brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; margin-right: auto; }
.nav .brand img { width: 36px; height: 36px; }
.nav .brand span { font-size: 26px; font-weight: 700; }
.nav .links { display: flex; gap: 14px; font-size: 15px; }
.nav .links a { color: var(--muted); text-decoration: none; }
.nav .links a:hover, .nav .links a[aria-current] { color: var(--accent); }
.site-footer { border-top: 1px solid var(--line); margin-top: 32px; padding-top: 16px; color: var(--muted); font-size: 13px; text-align: center; }
.site-footer nav { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 6px; }
.site-footer a { color: var(--muted); }
.prose h1 { font-size: 28px; margin: 16px 0 4px; }
.prose h2 { font-size: 20px; margin: 28px 0 8px; }
.prose h3 { font-size: 17px; margin: 20px 0 6px; }
.prose p, .prose li { color: var(--text); }
.prose .updated { color: var(--muted); font-size: 14px; margin-top: 0; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 4px 0; }
.prose code { background: var(--code-bg); padding: 1px 6px; border-radius: 6px; font-size: 14px; }
.callout { background: var(--code-bg); border-radius: 12px; padding: 14px 16px; margin: 16px 0; }
.download { display: flex; align-items: center; gap: 12px; justify-content: space-between; flex-wrap: wrap; }
.download h2 { margin: 0 0 4px; }
.download .meta { color: var(--muted); font-size: 14px; }
details { border-bottom: 1px solid var(--line); padding: 12px 0; }
details summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; }