:root {
  color-scheme: light dark;
  --bg: #f4f4f7;
  --card: #ffffff;
  --text: #17181c;
  --muted: #6b6f7a;
  --line: #e3e4ea;
  --accent: #e8336d;
  --accent-text: #ffffff;
  --danger: #d92d2d;
  --ok: #1f9d55;
  --warn: #e07b00;
  --electricity: #e6b800;
  --water: #2a7de1;
  --heating: #e0452e;
  --gas: #f08a24;
  --radius: 14px;
  --tabbar: 64px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #1a1d24;
    --text: #f1f2f5;
    --muted: #9aa0ad;
    --line: #2a2e38;
    --accent: #f2527d;
    --danger: #ff6b6b;
    --ok: #4cd08a;
    --warn: #ffa94d;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-top: env(safe-area-inset-top);
}

#app { max-width: 640px; margin: 0 auto; min-height: 100vh; }

main { padding: 16px 16px calc(var(--tabbar) + env(safe-area-inset-bottom) + 24px); }

h1 { font-size: 1.75rem; line-height: 1.15; margin: 8px 0 16px; letter-spacing: -0.02em; }
h1.sm { font-size: 1.4rem; line-height: 1.2; }
h2 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 22px 4px 8px; }
h3 { margin: 0; font-size: 1.05rem; }

.topbar { display: flex; align-items: center; gap: 8px; }
.topbar h1 { flex: 1; margin: 8px 0 16px; }
.back { background: none; border: 0; color: var(--accent); font-size: 1rem; padding: 4px 0; cursor: pointer; }

.card { background: var(--card); border-radius: var(--radius); overflow: hidden; }
.card + .card { margin-top: 10px; }

.row {
  display: flex; align-items: center; gap: 12px; padding: 12px 14px;
  border-bottom: 1px solid var(--line); width: 100%; text-align: left;
  background: none; border-left: 0; border-right: 0; border-top: 0; color: inherit; font: inherit;
}
.row:last-child { border-bottom: 0; }
button.row, a.row { cursor: pointer; text-decoration: none; }
.row .grow { flex: 1; min-width: 0; }
.row .title { font-weight: 600; }
.row .sub { color: var(--muted); font-size: 0.875rem; }
.row .status { font-size: 0.875rem; font-weight: 600; }
.icon { font-size: 1.5rem; width: 32px; text-align: center; }

.overdue { color: var(--danger); }
.active { color: var(--warn); }
.done { color: var(--ok); }
.muted { color: var(--muted); }

button, .btn {
  font: inherit; border: 0; border-radius: 999px; padding: 8px 16px;
  background: var(--accent); color: var(--accent-text); font-weight: 600; cursor: pointer;
  text-decoration: none; display: inline-block;
}
button.small, .btn.small { padding: 6px 14px; font-size: 0.875rem; }
.row > button.small { min-width: 104px; text-align: center; }
button.secondary, .btn.secondary { background: var(--line); color: var(--text); }
button.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button.link { background: none; color: var(--accent); padding: 4px 8px; }
button:disabled { opacity: 0.5; }

.actions { display: flex; gap: 8px; flex-wrap: wrap; padding: 12px 14px; }
.empty { text-align: center; color: var(--muted); padding: 40px 20px; }
.empty .big { font-size: 2.4rem; }

.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: flex; justify-content: space-around; background: var(--card);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar a {
  flex: 1; height: var(--tabbar); display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 2px; color: var(--muted); text-decoration: none; font-size: 0.75rem;
}
.tabbar a .ti { font-size: 1.35rem; line-height: 1; }
.tabbar a.on { color: var(--accent); font-weight: 600; }

/* űrlapok */
label.field { display: block; margin: 12px 0; font-size: 0.875rem; color: var(--muted); }
label.field > input, label.field > select, label.field > textarea { margin-top: 4px; }
input, select, textarea {
  width: 100%; font: inherit; padding: 10px 12px; border-radius: 10px; color: var(--text);
  border: 1px solid var(--line); background: var(--bg);
}
textarea { min-height: 70px; resize: vertical; }
.inline { display: flex; gap: 10px; }
.inline > * { flex: 1; }
.check { display: flex; align-items: center; gap: 10px; margin: 14px 0 4px; color: var(--text); font-size: 1rem; }
.check input { width: 22px; height: 22px; }
fieldset { border: 1px solid var(--line); border-radius: 12px; margin: 16px 0; padding: 4px 12px 10px; }
legend { padding: 0 6px; font-weight: 600; }
.error { color: var(--danger); margin: 8px 0; min-height: 1.2em; }
.hint { color: var(--muted); font-size: 0.875rem; }

dialog {
  border: 0; border-radius: 18px; padding: 0; width: min(560px, 94vw); max-height: 90vh;
  background: var(--card); color: var(--text);
}
dialog::backdrop { background: rgba(0, 0, 0, 0.5); }
dialog .dlg { padding: 18px 18px 14px; overflow-y: auto; max-height: 90vh; }
dialog .dlg h3 { font-size: 1.25rem; line-height: 1.25; margin-bottom: 6px; }
dialog .buttons { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }

dl.info { margin: 10px 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; }
dl.info dt { color: var(--muted); font-size: 0.875rem; }
dl.info dd { font-size: 1rem; }
dl.info dd { margin: 0; font-weight: 500; word-break: break-word; }

/* naptár */
.cal-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 6px; }
.cal-head h3 { }
.cal-head button { background: var(--line); color: var(--text); width: 38px; height: 38px; padding: 0; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; padding: 0 6px 10px; }
.cal-dow { text-align: center; color: var(--muted); font-size: 0.75rem; padding: 4px 0; }
.cal-cell {
  min-height: 50px; background: none; color: var(--text); border-radius: 10px; padding: 4px 0;
  display: flex; flex-direction: column; align-items: center; gap: 4px; font-weight: 400;
}
.cal-cell.empty-cell { visibility: hidden; }
.cal-cell.today .num { color: var(--accent); font-weight: 700; }
.cal-cell.sel { background: color-mix(in srgb, var(--accent) 20%, transparent); }
.marks { display: flex; gap: 2px; height: 8px; }
.mark { width: 7px; height: 7px; background: var(--muted); }
.mark.reading { border-radius: 50%; }
.mark.payment { border-radius: 1.5px; }
.mark.done { opacity: 0.3; }
.t-electricity { background: var(--electricity); }
.t-water { background: var(--water); }
.t-heating { background: var(--heating); }
.t-gas { background: var(--gas); }
.legend { color: var(--muted); font-size: 0.875rem; padding: 0 6px 12px; }

/* belépés */
.auth { padding: 40px 20px; }
.auth img { width: 84px; height: 84px; border-radius: 20px; display: block; margin: 0 auto 12px; }
.auth h1 { text-align: center; }
.seg { display: flex; background: var(--line); border-radius: 999px; padding: 3px; margin: 14px 0; }
.seg button { flex: 1; background: none; color: var(--muted); padding: 7px 4px; font-size: 0.85rem; }
.seg button.on { background: var(--card); color: var(--text); }

.toast {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(var(--tabbar) + env(safe-area-inset-bottom) + 14px);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 999px; z-index: 50; max-width: 90vw;
}

.pill { display: inline-block; border-radius: 999px; padding: 2px 10px; font-size: 0.75rem; font-weight: 600; background: var(--line); color: var(--muted); }
.code { font: 600 1.4rem ui-monospace, Menlo, monospace; letter-spacing: 0.12em; }
.meter-delta { font-size: 0.875rem; }

[hidden] { display: none !important; }
.dlg { padding: 14px 16px; }
.auth-form button { width: 100%; margin-top: 6px; padding: 12px; }
details > summary { cursor: pointer; list-style: none; }
details > summary::-webkit-details-marker { display: none; }
.inline > button { flex: 0 0 auto; }
.tabbar { max-width: 640px; margin: 0 auto; }

/* mobil: ne csússzon el az oldal, ne lógjanak ki a mezők */
html, body { max-width: 100%; overflow-x: hidden; overscroll-behavior-x: none; }
body { touch-action: pan-x pan-y; }
#app, main { min-width: 0; }
input, select, textarea { min-width: 0; max-width: 100%; font-size: 16px; }
input[type="date"] {
  -webkit-appearance: none; appearance: none; display: block; width: 100%; min-height: 44px;
  text-align: left; line-height: 1.2;
}
input[type="date"]::-webkit-date-and-time-value { text-align: left; margin: 0; }
.inline > *, .row .grow, .field { min-width: 0; }
.row .title, .row .sub, .row .status, dl.info dd { overflow-wrap: anywhere; }
.row > button, .row > .btn { flex: 0 0 auto; }
dialog { max-width: 94vw; }
dialog .dlg { overflow-x: hidden; }
fieldset { min-width: 0; }

summary.row { font-size: 0.875rem; color: var(--muted); }
summary.row::before { content: "▸"; display: inline-block; width: 1em; transition: transform .15s; }
details[open] > summary.row::before { transform: rotate(90deg); }
.topbar h1.sm { margin-right: 8px; }
.muted-block { color: var(--muted); font-size: 0.875rem; }