/* Brief companion. Mobile first, one column, system font, light and dark. */
:root {
  color-scheme: light dark;
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #16181d;
  --muted: #6b7280;
  --line: #e3e5ea;
  --accent: #1a73e8;
  --accent-text: #ffffff;
  --ok: #1e8e4f;
  --err: #c0392b;
  --pro: #b45309;
  --pro-bg: #fef3c7;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card: #1b2436;
    --text: #e6e9f0;
    --muted: #97a0b3;
    --line: #2a3448;
    --accent: #6aa3ff;
    --accent-text: #0b1220;
    --pro: #fbbf24;
    --pro-bg: #3a2f0f;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: env(safe-area-inset-bottom);
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 560px; margin: 0 auto; padding: 0 16px; }
.hidden { display: none !important; }
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 26px; line-height: 1.2; margin: 0 0 10px; }
h2 { font-size: 17px; margin: 0 0 10px; }
p { margin: 8px 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }

.top { position: sticky; top: 0; z-index: 5; background: var(--bg); border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 52px; }
.brand { font-weight: 700; font-size: 18px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.mark { width: 18px; height: 18px; border-radius: 5px; background: var(--accent); display: inline-block;
  box-shadow: inset 0 -6px 0 rgba(0,0,0,.25); }
#topnav { display: flex; gap: 14px; font-size: 14px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin: 14px 0; }
.hero { padding: 28px 0 10px; }
.steps { padding-left: 20px; margin: 0; }
.steps li { margin: 6px 0; }

.row { display: flex; gap: 10px; align-items: center; }
.row.between { justify-content: space-between; }
.row .field, .row input { flex: 1; min-width: 0; }
.field { display: block; margin: 10px 0; }
.field > span { display: block; font-size: 14px; margin-bottom: 4px; }
.indent { margin-left: 18px; }
input[type=text], input[type=url], input[type=number], textarea, select {
  font: inherit; width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px;
  background: transparent; color: inherit;
}
textarea { resize: vertical; }
input.code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 22px; letter-spacing: 3px;
  text-transform: uppercase; text-align: center; }

.btn { font: inherit; font-weight: 600; padding: 11px 16px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); cursor: pointer; display: inline-block; text-align: center;
  white-space: nowrap; }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn.ghost { background: transparent; }
.btn.small { padding: 6px 12px; font-size: 14px; }
.btn:disabled { opacity: .5; cursor: default; }
.links { display: flex; flex-wrap: wrap; gap: 8px; }
.links .btn { flex: 1; }

.msg { font-size: 14px; min-height: 1.2em; margin: 6px 0 0; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--err); }
.pill { font-size: 12px; padding: 2px 10px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.pill.ok { color: var(--ok); border-color: var(--ok); }
.pill.err { color: var(--err); border-color: var(--err); }
.pro-badge { font-size: 11px; font-weight: 700; letter-spacing: .5px; padding: 1px 6px; border-radius: 6px;
  background: var(--pro-bg); color: var(--pro); vertical-align: middle; }

.brief .headline { font-size: 22px; font-weight: 700; line-height: 1.3; margin: 4px 0 10px; }
.sections { list-style: none; padding: 0; margin: 0; }
.sections li { padding: 8px 0; border-top: 1px solid var(--line); }
.sections li:first-child { border-top: 0; }

.devices { list-style: none; padding: 0; margin: 0 0 10px; }
.devices li { display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 10px 0; border-bottom: 1px solid var(--line); }
.devices li b { display: block; }

.toggles { margin: 8px 0 14px; }
.toggle { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0;
  border-top: 1px solid var(--line); }
.toggle:first-child { border-top: 0; }
.toggle input { width: 22px; height: 22px; accent-color: var(--accent); flex: none; margin: 0; }
.toggle.locked { opacity: .55; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.chip { font-size: 13px; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--line);
  background: transparent; color: var(--text); cursor: pointer; }
.chip.on { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.feeds { list-style: none; padding: 0; margin: 6px 0 0; font-size: 14px; }
.feeds li { display: flex; justify-content: space-between; gap: 8px; padding: 6px 0; word-break: break-all; }
.feeds button { background: none; border: 0; color: var(--err); font: inherit; cursor: pointer; }

footer { padding: 20px 16px 30px; text-align: center; }