:root {
  --bg: #f4f5f7; --card: #ffffff; --text: #1d2330; --muted: #6b7280; --line: #e3e6ec;
  --accent: #2f5bd3; --accent-soft: #e8eefc; --accent-text: #ffffff;
  --on: #16a34a; --on-soft: #e7f6ec; --off: #9ca3af;
  --warn: #8a5a00; --warn-bg: #fff4d6; --bad: #b42318; --bad-bg: #fdecea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418; --card: #1a1f27; --text: #e7eaf0; --muted: #9aa3b2; --line: #2c3340;
    --accent: #6d8ff0; --accent-soft: #1f2a44; --accent-text: #0d1220;
    --on: #4ade80; --on-soft: #16301f; --off: #4b5563;
    --warn: #f3c969; --warn-bg: #3a2e12; --bad: #ff8a80; --bad-bg: #3d1c1a;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
.top { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; background: var(--card); border-bottom: 1px solid var(--line); }
.top h1 { font-size: 18px; margin: 0; }
.top-right { display: flex; gap: 16px; align-items: center; }
main { max-width: 760px; margin: 0 auto; padding: 20px 16px 120px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; margin-bottom: 18px; }
.card.narrow { max-width: 360px; margin: 70px auto; }
.card.narrow h2 { margin-top: 0; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.error { color: var(--bad); min-height: 1.3em; }
.banner { padding: 12px 16px; border-radius: 10px; margin: 0 0 16px; }
.banner.warn { background: var(--warn-bg); color: var(--warn); }

/* product cards */
.product-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.product h2 { font-size: 22px; margin: 0; }
.subtitle { margin: 2px 0 0; color: var(--muted); }
.sentence { font-size: 18px; margin: 18px 0 14px; padding: 12px 14px; border-radius: 10px; background: var(--bg); }
.sentence.on { background: var(--on-soft); }
.step { font-weight: 600; margin: 14px 0 8px; }
.step .muted { font-weight: 400; font-size: 14px; }
.hint { font-size: 14px; color: var(--muted); min-height: 1.2em; margin: 6px 0 0; }
.now { font-size: 14px; color: var(--muted); margin: 14px 0 0; border-top: 1px solid var(--line); padding-top: 12px; }
.note { font-size: 14px; color: var(--warn); margin: 8px 0 0; }
.off-block { opacity: .4; pointer-events: none; }

/* big on/off switch */
.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.slider { width: 60px; height: 34px; border-radius: 999px; background: var(--off); position: relative; transition: background .15s; flex: none; }
.slider::after { content: ""; position: absolute; top: 4px; left: 4px; width: 26px; height: 26px; border-radius: 50%; background: #fff; transition: transform .15s; box-shadow: 0 1px 3px rgba(0,0,0,.25); }
.switch input:checked + .slider { background: var(--on); }
.switch input:checked + .slider::after { transform: translateX(26px); }
.switch input:focus-visible + .slider { outline: 3px solid var(--accent); outline-offset: 2px; }
.switch-label { font-weight: 700; min-width: 80px; }

/* hour grid */
.hours { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.hour { padding: 10px 0; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text); font: inherit; font-variant-numeric: tabular-nums; cursor: pointer; }
.hour:hover { border-color: var(--accent); }
.hour[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 700; }
.hour:disabled { opacity: .35; cursor: not-allowed; }
@media (max-width: 480px) { .hours { grid-template-columns: repeat(4, 1fr); } }

/* autos range */
.choice { display: flex; gap: 10px; flex-wrap: wrap; }
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 999px; cursor: pointer; }
.pill:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.range { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 12px; }
.range label { display: flex; align-items: center; gap: 8px; }
select { font: inherit; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--text); }

/* buttons */
button { font: inherit; cursor: pointer; border-radius: 10px; padding: 10px 18px; border: 1px solid var(--accent); }
button.primary { background: var(--accent); color: var(--accent-text); font-weight: 600; }
button.secondary { background: transparent; color: var(--accent); }
button.link { background: none; border: none; color: var(--accent); padding: 0; }
button.wide { width: 100%; margin-top: 14px; }
input[type="password"] { font: inherit; width: 100%; padding: 10px 12px; margin-top: 6px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--text); }

/* save bar */
.savebar { position: fixed; left: 0; right: 0; bottom: 0; display: flex; justify-content: center; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 14px 16px; background: var(--card); border-top: 2px solid var(--accent); box-shadow: 0 -4px 16px rgba(0,0,0,.08); }
.savebar-actions { display: flex; gap: 10px; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--text); color: var(--card); padding: 12px 18px; border-radius: 10px; margin: 0; max-width: 90vw; }

/* technical details */
.tech summary { cursor: pointer; font-weight: 600; color: var(--muted); }
.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; margin-top: 14px; font-size: 14px; }
.tech h3 { font-size: 15px; margin: 0 0 8px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0 0 10px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
label.check { display: flex; gap: 8px; align-items: center; }
.log { list-style: none; margin: 0; padding: 0; max-height: 260px; overflow: auto; }
.log li { padding: 5px 0; border-bottom: 1px solid var(--line); }
.log .fail { color: var(--bad); }