/* Osłony RTG — web. Kolory = kolory systemowe iOS (jasne / ciemne). */
:root {
  --accent: #0A84FF;
  --zakaz: #FF3B30;
  --strefaA: #FF9500;
  --strefaB: #FFB300;
  --wolny: #34C759;
  --design: #1C7A34;
  --bg: #F2F2F7;
  --surface: #FFFFFF;
  --plan: #F2F2F7;
  --label: #000000;
  --secondary: rgba(60, 60, 67, 0.6);
  --tertiary: rgba(60, 60, 67, 0.3);
  --divider: rgba(60, 60, 67, 0.16);
  --card-border: rgba(0, 0, 0, 0.06);
  --ink: #000000;
  --edit-bg: rgba(255, 204, 0, 0.15);
  --edit-border: rgba(255, 159, 10, 0.4);
  --calc-bg: rgba(120, 120, 128, 0.08);
  --bar: rgba(255, 255, 255, 0.86);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000;
    --surface: #1C1C1E;
    --plan: #2C2C2E;
    --label: #FFFFFF;
    --secondary: rgba(235, 235, 245, 0.6);
    --tertiary: rgba(235, 235, 245, 0.3);
    --divider: rgba(84, 84, 88, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --ink: #FFFFFF;
    --calc-bg: rgba(120, 120, 128, 0.18);
    --bar: rgba(22, 22, 24, 0.86);
    --shadow: none;
  }
}
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #000000;
  --surface: #1C1C1E;
  --plan: #2C2C2E;
  --label: #FFFFFF;
  --secondary: rgba(235, 235, 245, 0.6);
  --tertiary: rgba(235, 235, 245, 0.3);
  --divider: rgba(84, 84, 88, 0.6);
  --card-border: rgba(255, 255, 255, 0.08);
  --ink: #FFFFFF;
  --calc-bg: rgba(120, 120, 128, 0.18);
  --bar: rgba(22, 22, 24, 0.86);
  --shadow: none;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--label);
  font: 15px/1.35 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, select { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.muted { color: var(--secondary); }
.small { font-size: 12px; }
.center { text-align: center; }
.caps { text-transform: uppercase; letter-spacing: .4px; font-size: 12px; font-weight: 700; color: var(--secondary); }

/* ---------- nagłówek ---------- */
.header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: var(--bar);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: .5px solid var(--divider);
}
.header-inner {
  max-width: 760px; margin: 0 auto;
  display: flex; gap: 10px; align-items: flex-start;
  padding: 16px max(20px, env(safe-area-inset-right)) 12px max(20px, env(safe-area-inset-left));
}
.header-text { flex: 1; min-width: 0; }
.header h1 { margin: 0; font-size: 22px; font-weight: 700; }
.subtitle { margin: 2px 0 9px; font-size: 12.5px; color: var(--secondary); }
.legend { display: flex; gap: 12px; flex-wrap: wrap; }
.legend-item { display: inline-flex; align-items: center; gap: 4px; font-size: 10.5px; color: var(--secondary); }
.sq { width: 9px; height: 9px; border-radius: 3px; display: inline-block; }
.sq-edit { background: #FFCC00; }
.sq-calc { background: rgba(120, 120, 128, .6); }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex: none; }

.lang { position: relative; }
.lang-btn {
  border: 0; border-radius: 999px; padding: 6px 10px; cursor: pointer;
  background: var(--calc-bg); font-size: 12px; font-weight: 600; white-space: nowrap;
}
.lang-menu {
  position: absolute; right: 0; top: calc(100% + 6px); min-width: 150px;
  background: var(--surface); border: 1px solid var(--card-border); border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,.18); overflow: hidden; z-index: 30;
}
.lang-menu button {
  display: flex; width: 100%; justify-content: space-between; gap: 10px;
  border: 0; background: none; padding: 10px 14px; cursor: pointer; text-align: left;
}
.lang-menu button:hover { background: var(--calc-bg); }

/* ---------- zakładki ---------- */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  display: flex; justify-content: center;
  background: var(--bar);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-top: .5px solid var(--divider);
  padding: 6px max(8px, env(safe-area-inset-right)) calc(4px + env(safe-area-inset-bottom, 0px)) max(8px, env(safe-area-inset-left));
}
.tabbar-inner { display: flex; width: 100%; max-width: 560px; }
.tab-btn {
  flex: 1; border: 0; background: none; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 4px 2px; color: var(--secondary); font-size: 10px;
}
.tab-btn svg { width: 24px; height: 24px; }
.tab-btn[aria-selected="true"] { color: var(--accent); font-weight: 600; }
main { max-width: 760px; margin: 0 auto; padding: 0 0 calc(84px + env(safe-area-inset-bottom, 0px)); }

@media (min-width: 900px) {
  .tabbar {
    position: sticky; top: var(--header-h, 96px); bottom: auto;
    border-top: 0; border-bottom: .5px solid var(--divider);
    padding: 4px 16px;
  }
  .tab-btn { flex-direction: row; justify-content: center; gap: 8px; font-size: 13.5px; padding: 8px 6px; border-radius: 10px; }
  .tab-btn svg { width: 20px; height: 20px; }
  .tab-btn[aria-selected="true"] { background: rgba(10, 132, 255, .1); }
  main { padding-bottom: 32px; }
}

/* ---------- karty i wiersze ---------- */
.section-header {
  margin: 0; padding: 20px 20px 6px;
  font-size: 12px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; color: var(--secondary);
}
.section-sub { margin: 0; padding: 0 20px 8px; font-size: 11.5px; color: var(--secondary); }
.section-sub.italic { font-style: italic; }
.card {
  background: var(--surface); border: 1px solid var(--card-border); border-radius: 14px;
  box-shadow: var(--shadow); margin: 0 16px; overflow: hidden;
}
.card + .card, .card.mt { margin-top: 14px; }
.pad { padding: 14px; }
.row { padding: 12px 14px; }
.row + .row, .row + .divided, .divided { border-top: .5px solid var(--divider); }
.row-head { display: flex; align-items: center; gap: 10px; }
.row-label { flex: 1; min-width: 0; }
.row-label .l { font-size: 14.5px; font-weight: 500; }
.row-label .s { font-size: 11.5px; color: var(--secondary); margin-top: 1px; }
.num-input {
  width: 84px; text-align: right; font-size: 16px; font-weight: 600;
  padding: 7px 8px; border-radius: 9px;
  background: var(--edit-bg); border: 1px solid var(--edit-border); outline: none;
}
.num-input:focus { border-color: var(--accent); }
.calc-chip {
  min-width: 84px; text-align: right; font-size: 16px; font-weight: 600;
  padding: 7px 8px; border-radius: 9px; background: var(--calc-bg); white-space: nowrap;
}
.select {
  appearance: none; -webkit-appearance: none; max-width: 62%;
  padding: 7px 28px 7px 10px; border-radius: 9px; font-size: 14px; font-weight: 600; cursor: pointer;
  background: var(--edit-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='14' viewBox='0 0 10 14'%3E%3Cpath d='M1 5l4-4 4 4M1 9l4 4 4-4' fill='none' stroke='%23888' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 9px center;
  border: 1px solid var(--edit-border);
  text-overflow: ellipsis;
}
.select.plain { background-color: transparent; border-color: transparent; color: var(--accent); }
.note { font-size: 11px; color: var(--secondary); margin-top: 8px; }
.note.warn { color: var(--strefaA); font-weight: 600; }
.note.accent { color: var(--accent); }

input[type=range] {
  -webkit-appearance: none; appearance: none; width: 100%; margin: 12px 0 2px; height: 28px; background: none; cursor: pointer;
  --p: 50%;
}
input[type=range]::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(to right, var(--accent) var(--p), var(--calc-bg) var(--p));
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 26px; height: 26px; border-radius: 50%; margin-top: -11px;
  background: #fff; box-shadow: 0 0.5px 4px rgba(0,0,0,.25), 0 3px 8px rgba(0,0,0,.12);
}
input[type=range]::-moz-range-track { height: 4px; border-radius: 2px; background: var(--calc-bg); }
input[type=range]::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--accent); }
input[type=range]::-moz-range-thumb {
  width: 26px; height: 26px; border-radius: 50%; border: 0;
  background: #fff; box-shadow: 0 0.5px 4px rgba(0,0,0,.25), 0 3px 8px rgba(0,0,0,.12);
}

.segmented { display: flex; background: var(--calc-bg); border-radius: 9px; padding: 2px; margin-top: 8px; }
.row > .segmented:first-child { margin-top: 0; }
.segmented button {
  flex: 1; border: 0; background: none; border-radius: 7px; padding: 6px 8px; cursor: pointer; font-size: 13px;
}
.segmented button[aria-pressed="true"] { background: var(--seg-on); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,.15); }
:root { --seg-on: #FFFFFF; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --seg-on: #636366; } }
:root[data-theme="dark"] { --seg-on: #636366; }

/* tabele porównawcze */
.cmp-head, .cmp-row { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 6px; padding: 10px 14px; align-items: baseline; }
.cmp-head { background: var(--calc-bg); padding: 9px 14px; }
.cmp-head span { text-align: right; font-size: 11px; font-weight: 700; color: var(--secondary); text-transform: uppercase; }
.cmp-row + .cmp-row { border-top: .5px solid var(--divider); }
.cmp-row .k { font-size: 13px; color: var(--secondary); }
.cmp-row .v { font-size: 14px; text-align: right; font-variant-numeric: tabular-nums; }
.cmp-row.bold .v { font-weight: 700; }

.tiles { display: flex; gap: 10px; padding: 14px; }
.tile { flex: 1; text-align: center; padding: 12px; border-radius: 12px; background: rgba(10, 132, 255, .08); min-width: 0; }
.tile .t { font-size: 10.5px; font-weight: 600; color: var(--secondary); text-transform: uppercase; letter-spacing: .3px; }
.tile .v { font-size: 22px; font-weight: 700; color: var(--accent); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.big-result { text-align: center; padding: 16px; background: linear-gradient(135deg, rgba(10,132,255,.12), rgba(10,132,255,.04)); }
.big-result.flat { background: rgba(10,132,255,.06); }
.big-result .cap { font-size: 11.5px; font-weight: 700; color: var(--secondary); text-transform: uppercase; letter-spacing: .4px; }
.big-result .val { font-size: 40px; font-weight: 800; color: var(--accent); line-height: 1.15; }
.big-result .src { font-size: 10.5px; font-weight: 600; color: var(--secondary); }
.big-result p { margin: 4px 0 0; font-size: 11px; color: var(--secondary); }

.chart { padding: 4px 14px 14px; }
.chart .cap { font-size: 11px; color: var(--secondary); margin-bottom: 6px; }
.chart svg { display: block; width: 100%; height: auto; background: var(--calc-bg); border-radius: 8px; }
.chart .legend { margin-top: 6px; }
.chart .ends { display: flex; justify-content: space-between; font-size: 9.5px; color: var(--tertiary); margin-top: 4px; }
svg text { fill: var(--secondary); font-family: inherit; }

/* strefy */
.zone-row { display: flex; align-items: center; gap: 10px; padding: 11px 14px; }
.zone-row + .zone-row { border-top: .5px solid var(--divider); }
.zone-row .dot { width: 10px; height: 10px; }
.zone-row .body { flex: 1; min-width: 0; }
.zone-row .n { font-size: 13.5px; font-weight: 600; }
.zone-row .d { font-size: 11px; color: var(--secondary); }
.zone-row .din { font-size: 10px; color: var(--strefaA); }
.zone-row .r { font-size: 13px; font-weight: 600; white-space: nowrap; }
.method-row { display: flex; align-items: center; gap: 8px; padding: 9px 14px; }
.method-row + .method-row { border-top: .5px solid var(--divider); }
.method-row .n { flex: 1; font-size: 13.5px; font-weight: 500; }
.method-row .v { font-size: 15px; font-weight: 700; color: var(--accent); white-space: nowrap; }
.method-row .tag { width: 78px; font-size: 9px; font-weight: 700; color: var(--strefaA); }
.card-title { font-size: 13px; font-weight: 600; padding: 14px 14px 6px; }
.rings { padding: 16px; }
.rings svg { display: block; width: 100%; max-width: 320px; height: auto; margin: 0 auto; }
.rings .legend { justify-content: center; margin-top: 8px; }
.checker .big { display: flex; align-items: baseline; justify-content: space-between; }
.checker .big b { font-size: 26px; }
.stat-boxes { display: flex; gap: 10px; margin-top: 4px; }
.stat { flex: 1; text-align: center; padding: 10px; border-radius: 10px; background: var(--calc-bg); }
.stat .t { font-size: 10px; color: var(--secondary); text-transform: uppercase; }
.stat .v { font-size: 15px; font-weight: 700; }
.class-box { display: flex; gap: 8px; align-items: center; padding: 10px; border-radius: 10px; margin-top: 10px; font-size: 13px; font-weight: 600; }

/* pomieszczenie */
.plan { padding: 14px; text-align: center; }
.plan-box { touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.plan-box svg { display: block; width: 100%; height: auto; max-width: 560px; margin: 0 auto; }
.plan-box.dragging { touch-action: none; cursor: grabbing; }
.plan .hint { font-size: 10.5px; color: var(--secondary); margin: 8px 0; }
.plan .legend { justify-content: center; }
.wall-head { display: flex; align-items: center; gap: 8px; padding: 12px 14px 10px; }
.wall-head .n { font-size: 15px; font-weight: 600; }
.wall-head .dist { margin-left: auto; font-size: 13px; color: var(--secondary); white-space: nowrap; }
.pill { font-size: 9.5px; font-weight: 700; color: var(--zakaz); background: rgba(255,59,48,.12); border-radius: 999px; padding: 2px 6px; }
.verdict { padding: 14px; }
.verdict .s { font-size: 15px; font-weight: 700; }
.verdict p { margin: 4px 0 0; font-size: 11px; color: var(--secondary); }
.add-result { text-align: center; padding: 12px; }
.add-result .cap { font-size: 10px; font-weight: 700; color: var(--secondary); text-transform: uppercase; }
.add-result .val { font-size: 30px; font-weight: 800; color: var(--accent); }
.add-result p { margin: 2px 0 0; font-size: 10.5px; color: var(--secondary); }
.link-btn { border: 0; background: none; color: var(--accent); cursor: pointer; padding: 10px 14px; font-size: 12.5px; font-weight: 500; width: 100%; text-align: left; }
.icon-btn { border: 0; background: none; color: var(--secondary); cursor: pointer; padding: 4px 6px; font-size: 16px; }
details.details { padding: 8px 14px 12px; border-top: .5px solid var(--divider); font-size: 11px; }
details.details summary { cursor: pointer; font-weight: 500; }
details.details .inner { padding-top: 6px; font-size: 10.5px; display: grid; gap: 6px; }
.seg-line { display: grid; grid-template-columns: 8px 70px 60px 1fr; gap: 6px; align-items: center; }
.seg-line .dot { width: 6px; height: 6px; }
.room-note { font-size: 10.5px; color: var(--secondary); padding: 12px 20px 0; margin: 0; }

.danger-link { display: block; margin: 20px auto 0; border: 0; background: none; color: var(--zakaz); font-weight: 600; font-size: 13px; cursor: pointer; }
.license-card { display: flex; align-items: center; gap: 10px; padding: 16px; }
.license-card .txt { flex: 1; }
.license-card b { font-size: 13px; }
.license-card .svc { font-size: 11px; color: var(--strefaA); }
.license-card button { border: 0; background: none; color: var(--accent); font-weight: 600; font-size: 13px; cursor: pointer; }

.status { margin: 16px; padding: 10px 14px; border-radius: 10px; font-size: 12.5px; background: rgba(255,149,0,.12); color: var(--label); }
.footer { padding: 16px 20px 32px; font-size: 11px; color: var(--secondary); line-height: 1.6; }
.footer .brand { color: var(--wolny); font-weight: 700; font-size: 12.5px; margin: 10px 0 0; }

/* ekran licencji */
.gate { position: fixed; inset: 0; z-index: 50; background: var(--bg); overflow: auto; }
.gate-inner { max-width: 440px; margin: 0 auto; padding: calc(48px + env(safe-area-inset-top, 0px)) 16px 40px; text-align: center; }
.gate-icon { width: 48px; height: 48px; color: var(--accent); }
.gate h2 { margin: 8px 0 6px; font-size: 24px; }
.gate-card { margin: 24px 0 0; padding: 16px; text-align: left; display: grid; gap: 10px; }
.gate-input {
  width: 100%; text-align: center; font: 600 20px ui-monospace, "SF Mono", Menlo, Consolas, monospace; letter-spacing: 1px;
  padding: 12px; border-radius: 10px; background: var(--edit-bg); border: 1px solid var(--edit-border); outline: none;
}
.gate-input.bad { border-color: var(--zakaz); }
.error { color: var(--zakaz); font-size: 11.5px; font-weight: 600; margin: 0; }
.btn-primary { border: 0; border-radius: 11px; padding: 13px; background: var(--accent); color: #fff; font-weight: 600; font-size: 16px; cursor: pointer; }
.btn-primary:disabled { opacity: .6; }
.gate .small { margin: 22px 12px 8px; }
.link { color: var(--accent); font-weight: 600; font-size: 13px; text-decoration: none; }
.gate-lang { margin-top: 24px; display: flex; gap: 8px; justify-content: center; }
.gate-lang button { border: 0; border-radius: 999px; padding: 5px 10px; background: var(--calc-bg); cursor: pointer; font-size: 12px; }
.gate-lang button[aria-pressed="true"] { background: rgba(10,132,255,.15); color: var(--accent); font-weight: 600; }

.confirm { border: 0; border-radius: 14px; padding: 20px; max-width: 320px; background: var(--surface); color: var(--label); }
.confirm::backdrop { background: rgba(0,0,0,.35); }
.confirm h3 { margin: 0 0 6px; font-size: 17px; }
.confirm p { margin: 0 0 16px; font-size: 13px; }
.confirm-actions { display: flex; gap: 8px; justify-content: flex-end; }
.confirm-actions button { border: 0; border-radius: 9px; padding: 8px 14px; cursor: pointer; background: var(--calc-bg); font-weight: 600; }
.confirm-actions .danger { background: var(--zakaz); color: #fff; }

.busy main { opacity: .98; }
@media print {
  .tabbar, .lang, .danger-link, .license-card, .plan .hint { display: none !important; }
  .tab[hidden] { display: block !important; }
  body { background: #fff; }
}