:root {
  --bg: #1a0f0b;
  --surface: #26170f;
  --surface-2: #342016;
  --line: #4a2f20;
  --text: #f7ebe1;
  --muted: #c3a593;
  --ember: #ff7a3d;
  --ember-2: #ffb36b;
  --hot: #ff5a2a;
  --ok: #7fd1a0;
  --danger: #ff5d5d;
  --radius: 18px;
  --tabs-h: 64px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body {
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  min-height: 100dvh;
}
main {
  max-width: 520px;
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top) + 16px) 16px calc(var(--tabs-h) + env(safe-area-inset-bottom) + 96px);
}
h1 { font-size: 28px; margin: 4px 0 16px; letter-spacing: -0.02em; }
h2 { font-size: 15px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 28px 0 10px; font-weight: 600; }
p { margin: 0 0 12px; }
a { color: var(--ember-2); }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.center { text-align: center; }
.row { display: flex; gap: 12px; align-items: center; }
.row > * { flex: 1; }
.spread { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
[hidden] { display: none !important; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

button, .btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 16px 22px;
  font: inherit;
  font-weight: 650;
  font-size: 17px;
  color: #1a0f0b;
  background: linear-gradient(180deg, var(--ember-2), var(--ember));
  width: 100%;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  touch-action: manipulation;
}
button:active { transform: scale(0.98); }
button:disabled { opacity: 0.5; }
button.secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--line); }
button.danger { background: var(--danger); color: #fff; }
button.ghost { background: none; color: var(--ember-2); padding: 10px; width: auto; }
button.small { padding: 10px 14px; font-size: 15px; width: auto; }

input, select {
  font: inherit;
  font-size: 17px;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  width: 100%;
  min-width: 0;
  max-width: 100%;
}
/* iOS Safari gives date/time inputs an intrinsic minimum width that overflows narrow cards. */
input[type="datetime-local"], input[type="date"], input[type="time"] {
  -webkit-appearance: none;
  appearance: none;
  display: block;
  min-height: 48px;
  line-height: 1.3;
}
input::-webkit-date-and-time-value { text-align: left; margin: 0; }
label { display: block; margin-bottom: 14px; min-width: 0; }
form, .card { min-width: 0; }
label > span { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; }
label.check { display: flex; gap: 10px; align-items: flex-start; }
label.check input { width: 22px; height: 22px; flex: none; margin-top: 1px; accent-color: var(--ember); }

/* state pill */
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--line);
  font-size: 14px; font-weight: 600; text-transform: capitalize;
}
.pill::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.pill.heating::before { background: var(--ember-2); animation: pulse 1.4s infinite; }
.pill.hot::before, .pill.bakeout::before { background: var(--hot); }
.pill.cooling::before { background: #7fb6ff; }
.pill.offline { border-color: var(--danger); color: var(--danger); }
@keyframes pulse { 50% { opacity: 0.3; } }

/* dial */
.dial-wrap { position: relative; width: min(84vw, 320px); margin: 8px auto 4px; touch-action: none; user-select: none; -webkit-user-select: none; }
.dial-wrap svg { width: 100%; display: block; }
.dial-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; pointer-events: none; }
.dial-target { font-size: 64px; font-weight: 700; letter-spacing: -0.04em; font-variant-numeric: tabular-nums; }
.dial-target sup { font-size: 24px; font-weight: 600; vertical-align: 28px; }
.dial-sub { color: var(--muted); font-size: 15px; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 16px 0; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 10px; text-align: center; }
.stat b { display: block; font-size: 22px; font-variant-numeric: tabular-nums; }
.stat span { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }

.big-temp { font-size: 88px; font-weight: 700; letter-spacing: -0.05em; line-height: 1; margin: 16px 0 8px; font-variant-numeric: tabular-nums; }
.big-temp sup { font-size: 32px; vertical-align: 44px; }

.graph { width: 100%; height: 160px; display: block; }

ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: 10px 0; border-bottom: 1px solid var(--line); }
ul.plain li:last-child { border-bottom: 0; }

.log-row .spread b { font-size: 17px; }
.kv { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 12px; font-size: 14px; margin-top: 8px; }
.kv span { color: var(--muted); }
.tag { font-size: 12px; padding: 2px 8px; border-radius: 999px; background: var(--surface-2); color: var(--muted); }

.alert { border-color: var(--danger); }
.alert li { font-size: 14px; }

/* bottom tabs */
#tabs {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: flex; justify-content: space-around;
  background: rgba(26, 15, 11, 0.94); backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
  height: calc(var(--tabs-h) + env(safe-area-inset-bottom));
  z-index: 10;
}
#tabs a { flex: 1; display: flex; align-items: center; justify-content: center; color: var(--muted); text-decoration: none; font-weight: 600; font-size: 15px; }
#tabs a.active { color: var(--ember-2); }

#stopbar {
  position: fixed; left: 12px; right: 12px;
  bottom: calc(var(--tabs-h) + env(safe-area-inset-bottom) + 10px);
  max-width: 496px; margin: 0 auto;
  display: flex; align-items: center; gap: 12px;
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 6px 6px 18px; z-index: 11;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
#stopbar span { flex: 1; font-size: 15px; }
#stopbar button { width: auto; padding: 10px 22px; }
body.no-tabs #stopbar { bottom: calc(env(safe-area-inset-bottom) + 12px); }

#toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  top: calc(env(safe-area-inset-top) + 12px);
  background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 12px; font-weight: 600; font-size: 15px;
  z-index: 30; max-width: calc(100vw - 32px);
}
#toast.error { background: var(--danger); color: #fff; }

/* confirm sheet */
.sheet-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 20; display: flex; align-items: flex-end; justify-content: center; }
.sheet { background: var(--surface); border-top-left-radius: 24px; border-top-right-radius: 24px; padding: 24px 16px calc(env(safe-area-inset-bottom) + 20px); width: 100%; max-width: 520px; }
.sheet h3 { margin: 0 0 8px; font-size: 22px; }
.sheet .row { margin-top: 18px; }

.steps { counter-reset: s; padding: 0; list-style: none; }
.steps li { counter-increment: s; position: relative; padding: 0 0 16px 44px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: -2px; width: 30px; height: 30px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; font-weight: 700; }

/* hamburger menu */
main > :first-child { padding-right: 52px; }
#menu-btn {
  position: fixed; z-index: 25;
  top: calc(env(safe-area-inset-top) + 12px);
  right: max(12px, calc((100vw - 520px) / 2 + 12px));
  width: 44px; height: 44px; padding: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; color: var(--text);
  background: var(--surface-2); border: 1px solid var(--line);
}
#menu-backdrop { position: fixed; inset: 0; z-index: 23; background: rgba(0,0,0,0.45); }
#menu {
  position: fixed; z-index: 24;
  top: calc(env(safe-area-inset-top) + 64px);
  right: max(12px, calc((100vw - 520px) / 2 + 12px));
  width: min(260px, calc(100vw - 24px));
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 8px; box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  display: flex; flex-direction: column;
}
#menu a, #menu button {
  display: block; width: 100%; text-align: left;
  padding: 12px 14px; border-radius: 12px;
  color: var(--text); text-decoration: none; font-weight: 600; font-size: 17px;
  background: none; border: 0;
}
#menu a[aria-current="page"] { background: var(--surface-2); color: var(--ember-2); }
#menu button { color: var(--muted); font-weight: 500; }
#menu .menu-sep {
  margin: 8px 14px 4px; padding-top: 10px; border-top: 1px solid var(--line);
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted);
}