:root {
  --bg: #f2f4f7;
  --card: #ffffff;
  --text: #17202b;
  --muted: #5d6b7a;
  --line: #dde3ea;
  --accent: #1f6feb;
  --accent-text: #ffffff;
  --ok: #1a7f37;
  --warn: #b35900;
  --danger: #c62828;
  --window-sky: #cfe6ff;
  --window-frame: #8a97a6;
  --slat: #6b7785;
  --slat-line: #59646f;
  --gate: #1a7f37;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --radius: 16px;
  --tabbar-h: 64px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141a;
    --card: #1a222c;
    --text: #e8edf2;
    --muted: #9aa8b6;
    --line: #2b3542;
    --accent: #4c8dff;
    --window-sky: #203a57;
    --window-frame: #5d6b7a;
    --slat: #8794a2;
    --slat-line: #6e7a87;
    --gate: #2ea043;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}
[hidden] { display: none !important; }
h1 { font-size: 1.35rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 0 0 12px; }
.muted { color: var(--muted); }
.error { color: var(--danger); min-height: 1.4em; margin: 8px 0 0; }

/* ---------- login ---------- */
.login { min-height: 100%; display: grid; place-items: center; padding: 24px 16px; }
.login-box { width: 100%; max-width: 340px; text-align: center; }
.login-box img { border-radius: 18px; }
.login-box h1 { margin: 12px 0 24px; }
.login-box form { display: grid; gap: 10px; text-align: left; }
input[type=password], input[type=time] {
  font: inherit; color: var(--text); background: var(--card);
  border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; width: 100%;
}
input:focus-visible, button:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; }

/* ---------- layout ---------- */
.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(env(safe-area-inset-top) + 14px) 16px 12px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
}
.conn { width: 12px; height: 12px; border-radius: 50%; background: var(--muted); }
.conn.ok { background: var(--ok); }
.conn.bad { background: var(--danger); }
main { padding: 0 16px calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 24px); max-width: 720px; margin: 0 auto; }
.banner { margin: 0 16px 12px; padding: 10px 14px; border-radius: 12px; background: color-mix(in srgb, var(--danger) 14%, var(--card)); color: var(--text); }
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; margin-bottom: 14px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.card-head h2 { margin: 0; }

.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 6;
  display: grid; grid-template-columns: repeat(3, 1fr);
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--card); border-top: 1px solid var(--line);
}
.tabbar button {
  border: 0; background: none; color: var(--muted); font: inherit; font-size: .78rem;
  display: grid; place-items: center; align-content: center; gap: 2px; cursor: pointer;
}
.tabbar svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tabbar button.active { color: var(--accent); font-weight: 600; }

/* ---------- buttons ---------- */
.btn {
  font: inherit; border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 12px; padding: 10px 16px; min-height: 44px; cursor: pointer;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.icon-btn svg { width: 22px; height: 22px; fill: currentColor; }

/* ---------- gate ---------- */
.gate-card { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 12px; }
.gate-info h2 { margin-bottom: 4px; }
.gate-state { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .95rem; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); flex: none; }
.dot.on { background: var(--gate); box-shadow: 0 0 0 4px color-mix(in srgb, var(--gate) 25%, transparent); }
.dot.bad { background: var(--danger); }
.hold-btn {
  --p: 0;
  position: relative; width: 112px; height: 112px; border-radius: 50%; border: 0; cursor: pointer;
  color: var(--accent-text); font: inherit; font-weight: 700; font-size: .9rem; line-height: 1.15;
  background:
    radial-gradient(closest-side, var(--gate) 84%, transparent 85% 100%),
    conic-gradient(var(--text) calc(var(--p) * 1%), var(--line) 0);
  touch-action: none; user-select: none; -webkit-user-select: none;
}
.hold-btn svg { width: 30px; height: 30px; display: block; margin: 0 auto 4px; fill: currentColor; }
.hold-btn.busy { background: radial-gradient(closest-side, color-mix(in srgb, var(--gate) 70%, #000) 84%, transparent 85%), var(--gate); }
.gate-hint { grid-column: 1 / -1; font-size: .85rem; margin: 0; }

/* ---------- shutters ---------- */
.shutter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 12px; margin-bottom: 14px; }
.shutter-tile { border: 0; background: none; padding: 0; color: inherit; font: inherit; cursor: pointer; text-align: center; }
.shutter-tile .name { display: block; font-size: .9rem; margin-top: 6px; }
.shutter-tile .pct { display: block; font-weight: 700; font-variant-numeric: tabular-nums; }
.window {
  position: relative; aspect-ratio: 4 / 5; border-radius: 6px; overflow: hidden;
  background: linear-gradient(var(--window-sky), color-mix(in srgb, var(--window-sky) 70%, var(--card)));
  border: 4px solid var(--window-frame);
}
.window::before, .window::after { content: ""; position: absolute; background: var(--window-frame); z-index: 0; }
.window::before { left: 50%; top: 0; bottom: 0; width: 3px; transform: translateX(-50%); }
.window::after { top: 50%; left: 0; right: 0; height: 3px; transform: translateY(-50%); }
.window .shade {
  position: absolute; left: 0; right: 0; top: 0; z-index: 1;
  height: calc((100 - var(--level, 100)) * 1%);
  background: repeating-linear-gradient(var(--slat) 0 7px, var(--slat-line) 7px 9px);
  transition: height .6s ease;
  border-bottom: 3px solid var(--slat-line);
}
.window .move {
  position: absolute; z-index: 2; right: 4px; bottom: 4px; width: 22px; height: 22px; border-radius: 50%;
  background: var(--card); color: var(--accent); display: grid; place-items: center; font-size: 13px; font-weight: 700;
}
.window.unreach { opacity: .45; }
.window.big { max-width: 150px; margin: 0 auto 16px; }

/* ---------- sheet ---------- */
.sheet-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 20; }
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 21;
  max-width: 560px; margin: 0 auto; background: var(--card); border-radius: 20px 20px 0 0;
  padding: 12px 16px calc(env(safe-area-inset-bottom) + 20px); max-height: 92vh; overflow: auto;
}
.sheet .grab { width: 40px; height: 4px; border-radius: 2px; background: var(--line); margin: 0 auto 12px; }
.sheet h2 { text-align: center; }
.slider-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; margin: 8px 0 16px; }
input[type=range] { width: 100%; accent-color: var(--accent); height: 32px; }
.slider-val { font-weight: 700; font-variant-numeric: tabular-nums; min-width: 3.5ch; text-align: right; }
.quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 8px; }
.quick .btn { padding: 8px 0; }

/* ---------- schedules ---------- */
.sun-info { margin: 0 0 12px; }
.tm-row { border-top: 1px solid var(--line); padding: 14px 0 4px; display: grid; gap: 10px; }
.tm-row:first-of-type { border-top: 0; padding-top: 0; }
.tm-label { font-weight: 600; }
.tm-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; align-items: center; }
.seg { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.seg button { border: 0; background: none; color: var(--text); font: inherit; font-size: .88rem; padding: 10px 4px; min-height: 44px; cursor: pointer; }
.seg button.on { background: var(--accent); color: var(--accent-text); font-weight: 600; }
.sun-label { color: var(--muted); font-size: .92rem; padding: 0 4px; }
.tm-save { justify-self: end; }
.switch { position: relative; display: inline-flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--muted); cursor: pointer; }
.switch input { appearance: none; width: 46px; height: 28px; border-radius: 14px; background: var(--line); position: relative; cursor: pointer; margin: 0; transition: background .2s; }
.switch input::after { content: ""; position: absolute; top: 3px; left: 3px; width: 22px; height: 22px; border-radius: 50%; background: #fff; transition: transform .2s; box-shadow: 0 1px 2px rgba(0,0,0,.3); }
.switch input:checked { background: var(--ok); }
.switch input:checked::after { transform: translateX(18px); }
.warn { color: var(--warn); }

.log { list-style: none; margin: 0; padding: 0; }
.log li { padding: 6px 0; border-top: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.log li:first-child { border-top: 0; }

.toast {
  position: fixed; left: 50%; transform: translateX(-50%); z-index: 30;
  bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 14px);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 12px; max-width: calc(100% - 32px);
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
}
.toast.err { background: var(--danger); color: #fff; }

@media (prefers-reduced-motion: reduce) { .window .shade { transition: none; } }