/* STEG Bill Estimator: a calm, official, app-like look.
   Phone first; logical properties everywhere so Arabic mirrors; light and dark; print. */

:root {
  --navy: #0b3a5d;
  --navy-2: #0f4c78;
  --sun: #ffc83d;
  --bg: #f2f5f9;
  --surface: #ffffff;
  --surface-2: #f5f8fb;
  --surface-3: #eaf0f6;
  --text: #0f1d2b;
  --muted: #5a6b7d;
  --border: #d5dee8;
  --border-soft: #e6ecf2;
  --primary: #0b5ea8;
  --primary-hover: #094f8e;
  --primary-ink: #ffffff;
  --primary-soft: #e7f1fb;
  --ring: rgba(11, 94, 168, 0.28);
  --ok: #157a52;
  --ok-soft: #e4f4ec;
  --err: #b42318;
  --err-bg: #fdecea;
  --warn: #8a5300;
  --warn-bg: #fff4dc;
  --badge-bg: #fff4d1;
  --badge-text: #7a5600;
  --hero-1: #0b3a5d;
  --hero-2: #12507f;
  --hero-ink: #ffffff;
  --hero-muted: #c8dcee;
  --shadow: 0 1px 2px rgba(15, 40, 70, 0.06), 0 8px 24px rgba(15, 40, 70, 0.07);
  --shadow-lg: 0 2px 4px rgba(15, 40, 70, 0.06), 0 16px 40px rgba(15, 40, 70, 0.12);
  --radius: 20px;
  --radius-sm: 12px;
  --tier-0: #cdeedd; --tier-1: #a8e0c4; --tier-2: #fde7a6; --tier-3: #fcc98b; --tier-4: #f7a98a; --tier-5: #ef8b8b;
  --tier-text: #13232f;
  --font: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-ar: "IBM Plex Sans Arabic", "IBM Plex Sans", "Segoe UI", Tahoma, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #08121c;
    --surface: #0f1c29;
    --surface-2: #132332;
    --surface-3: #1a2d3f;
    --text: #e8eef5;
    --muted: #9cb0c4;
    --border: #26394c;
    --border-soft: #1d2f40;
    --primary: #5aa9f0;
    --primary-hover: #7bbbf4;
    --primary-ink: #04121f;
    --primary-soft: #10304c;
    --ring: rgba(90, 169, 240, 0.35);
    --ok: #4cc38a;
    --ok-soft: #0f3326;
    --err: #ff8a80;
    --err-bg: #3a1513;
    --warn: #ffc76b;
    --warn-bg: #352508;
    --badge-bg: #3b2f0c;
    --badge-text: #ffd76b;
    --hero-1: #0a2238;
    --hero-2: #0e3456;
    --hero-muted: #a9c3dc;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.4), 0 16px 40px rgba(0, 0, 0, 0.45);
    --tier-0: #2f6b50; --tier-1: #3f7f5c; --tier-2: #8a7428; --tier-3: #94612a; --tier-4: #8f4b39; --tier-5: #8d3a3f;
    --tier-text: #f4f7fa;
    color-scheme: dark;
  }
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
}
html[lang="ar"] body { font-family: var(--font-ar); line-height: 1.7; }
h1, h2, h3 { line-height: 1.25; margin: 0; letter-spacing: -0.01em; }
html[lang="ar"] h1, html[lang="ar"] h2, html[lang="ar"] h3 { letter-spacing: 0; }
p { margin: 0; }
a { color: var(--primary); }
.muted { color: var(--muted); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; inset-inline-start: 12px; inset-block-start: -60px; z-index: 50;
  background: var(--primary); color: var(--primary-ink); padding: 10px 16px; border-radius: 10px; font-weight: 600;
}
.skip-link:focus { inset-block-start: 12px; }
:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; }
[id] { scroll-margin-top: 76px; } /* clear the sticky app bar when jumping to a part of the page */
[hidden] { display: none !important; }

.wrap { width: 100%; max-width: 1120px; margin-inline: auto; padding-inline: 16px; }

/* ---------- app bar ---------- */
.appbar {
  position: sticky; inset-block-start: 0; z-index: 20;
  background: color-mix(in srgb, var(--hero-1) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  color: var(--hero-ink);
}
.appbar-inner {
  max-width: 1120px; margin-inline: auto; padding: 10px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; }
.brand-icon { flex: none; border-radius: 9px; }
.lang-switch {
  display: inline-flex; padding: 3px; gap: 2px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}
.lang-btn {
  min-width: 42px; height: 34px; padding: 0 12px; border: 0; border-radius: 999px;
  background: transparent; color: var(--hero-ink); font: 600 0.9rem var(--font); cursor: pointer;
}
.lang-btn[data-lang="ar"] { font-family: var(--font-ar); font-size: 1.05rem; }
.lang-btn:hover { background: rgba(255, 255, 255, 0.12); }
.lang-btn[aria-pressed="true"] { background: #fff; color: var(--navy); }

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--hero-1), var(--hero-2));
  color: var(--hero-ink);
  padding-block: 20px 76px;
}
.hero-title { font-size: clamp(1.6rem, 5.4vw, 2.5rem); font-weight: 700; max-width: 22ch; }
.hero-text { margin-block-start: 10px; color: var(--hero-muted); max-width: 60ch; font-size: 1.02rem; }
.chips { list-style: none; padding: 0; margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 13px; border-radius: 999px; font-size: 0.88rem; font-weight: 500;
  background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.16);
}
.chips svg { color: var(--sun); flex: none; }

/* ---------- layout: cards float up over the hero ---------- */
.layout { margin-block-start: -56px; display: grid; gap: 16px; align-items: start; }
.col-main, .col-side { display: grid; gap: 16px; min-width: 0; }
@media (min-width: 960px) {
  .layout { grid-template-columns: minmax(0, 1fr) 420px; gap: 24px; }
}
.extras { display: grid; gap: 16px; margin-block: 16px 32px; }
@media (min-width: 960px) { .extras { margin-block-start: 24px; gap: 24px; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
@media (min-width: 600px) { .card { padding: 26px; } }
.card h2 { font-size: 1.2rem; font-weight: 700; }
.card h3 { font-size: 1.02rem; font-weight: 700; }

/* ---------- steps ---------- */
.steps { display: grid; gap: 16px; }
.step-head { display: flex; align-items: center; gap: 12px; margin-block-end: 18px; }
.step-num {
  flex: none; width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 700; font-size: 0.95rem;
  background: var(--primary-soft); color: var(--primary);
}

/* ---------- fields ---------- */
.field { display: grid; gap: 6px; align-content: start; margin: 0 0 16px; padding: 0; border: 0; min-width: 0; } /* side-by-side fields stay aligned even when one hint is longer */
fieldset.field { margin-block-end: 16px; }
.field > label, legend { font-weight: 600; font-size: 0.95rem; padding: 0; margin-block-end: 6px; }
.field > legend { margin-block-end: 10px; }
.hint { color: var(--muted); font-size: 0.88rem; }
.grid2 { display: grid; gap: 0 14px; }
@media (min-width: 560px) {
  .grid2 { grid-template-columns: 1fr 1fr; }
  /* fields side by side share their rows, so the boxes line up even when one label wraps */
  .grid2 > .field { grid-row: span 4; grid-template-rows: subgrid; row-gap: 6px; }
}

input[type="text"], input[type="date"], select {
  width: 100%; min-height: 52px; padding: 12px 14px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--text);
  font: 500 1rem var(--font);
  transition: border-color 0.15s, box-shadow 0.15s, background-color 0.15s;
}
html[lang="ar"] select, html[lang="ar"] input[type="date"] { font-family: var(--font-ar); }
input.num { font-size: 1.3rem; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: 0.02em; }
input::placeholder { color: color-mix(in srgb, var(--muted) 55%, transparent); }
input:hover, select:hover { border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); }
input:focus, select:focus { outline: none; border-color: var(--primary); background: var(--surface); box-shadow: 0 0 0 4px var(--ring); }
input[aria-invalid="true"] { border-color: var(--err); }
select {
  appearance: none; -webkit-appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6' fill='none' stroke='%235a6b7d' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-size: 20px; background-position: right 14px center;
  padding-inline-end: 44px;
}
html[dir="rtl"] select { background-position: left 14px center; }
.sub { margin-block-start: 12px; padding-inline-start: 14px; border-inline-start: 3px solid var(--border-soft); }
.computed { margin-block-start: 6px; font-weight: 600; color: var(--primary); }
.read-mode { margin-block-end: 14px; }
.read-mode .segmented { margin-block-end: 0; }
#track-wrap .callout { margin-block: 0 16px; }
.track-buttons { margin-block: 0 10px; }
.track-status { padding: 10px 12px; border-radius: 12px; background: var(--ok-soft); color: var(--ok); font-weight: 500; font-size: 0.92rem; margin-block-end: 10px; }

/* messages: icon + text, never colour alone */
.msg { display: flex; gap: 8px; align-items: flex-start; margin: 4px 0 0; padding: 8px 12px; border-radius: 10px; font-size: 0.9rem; font-weight: 500; }
.msg::before { content: "!"; flex: none; display: inline-grid; place-items: center; width: 1.35em; height: 1.35em; border-radius: 50%; font-weight: 700; line-height: 1; }
.msg-error { color: var(--err); background: var(--err-bg); }
.msg-error::before { background: var(--err); color: var(--err-bg); }
.msg-warn { color: var(--warn); background: var(--warn-bg); }
.msg-warn::before { content: "\26A0"; background: none; color: var(--warn); font-size: 1.1em; }

/* meter type cards */
.cards { display: grid; gap: 10px; }
@media (min-width: 560px) { .cards { grid-template-columns: 1fr 1fr; } }
.radio-card {
  position: relative; display: flex; gap: 14px; align-items: flex-start;
  padding: 16px; border: 1.5px solid var(--border); border-radius: 16px;
  background: var(--surface-2); cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s;
}
.radio-card:hover { border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); }
.radio-card input { position: absolute; opacity: 0; inset-block-start: 0; inset-inline-start: 0; }
.radio-card:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); box-shadow: 0 0 0 3px var(--ring); }
.radio-card:has(input:focus-visible) { outline: 3px solid var(--ring); outline-offset: 2px; }
.radio-card-text { display: grid; gap: 4px; padding-inline-end: 20px; }
.radio-card-title { font-weight: 700; }
.radio-card-hint { color: var(--muted); font-size: 0.86rem; line-height: 1.45; }
.radio-tick {
  position: absolute; inset-block-start: 14px; inset-inline-end: 14px;
  width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--border);
  background: var(--surface);
}
.radio-card:has(input:checked) .radio-tick {
  border-color: var(--primary); background: var(--primary)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6 12.5 4 4 8-9' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 15px no-repeat;
}
.mini-meter { flex: none; }
.mini-meter, .meter-fig { direction: ltr; } /* the drawings are not text: never mirror them in Arabic */

/* meter drawings (cards and the guide) */
.m-body { fill: var(--surface-3); stroke: var(--border); stroke-width: 1.5; }
.m-plate { fill: var(--surface); stroke: var(--border-soft); }
.m-window { fill: #1b2733; }
.m-digit { fill: #0b1117; }
.m-red { fill: #d93a2b; }
.m-slot { fill: #9fb0c1; }
.m-lcd { fill: #b9cfa2; }
.m-lcd-ink { fill: #2b3a22; }
.m-button { fill: #d7e0e9; stroke: #8fa1b3; }
.m-led { fill: #d93a2b; }
.m-digits text { fill: #fff; font: 700 26px var(--font); text-anchor: middle; }
.m-label { fill: var(--muted); font: 700 15px var(--font); text-anchor: middle; }
.m-lcd-code { fill: #2b3a22; font: 700 15px ui-monospace, Consolas, monospace; }
.m-lcd-unit { fill: #2b3a22; font: 700 13px ui-monospace, Consolas, monospace; text-anchor: end; }
.m-lcd-value { fill: #1c2a14; font: 700 34px ui-monospace, Consolas, monospace; text-anchor: end; letter-spacing: 1px; }

/* segmented control (months / dates) */
.segmented { display: grid; grid-template-columns: 1fr 1fr; padding: 4px; gap: 4px; border-radius: 14px; background: var(--surface-3); margin-block-end: 10px; }
.seg-opt { position: relative; display: grid; place-items: center; min-height: 42px; padding: 6px 10px; border-radius: 10px; font-weight: 600; font-size: 0.92rem; color: var(--muted); cursor: pointer; text-align: center; }
.seg-opt input { position: absolute; opacity: 0; }
.seg-opt:has(input:checked) { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(15, 40, 70, 0.14); }
.seg-opt:has(input:focus-visible) { outline: 3px solid var(--ring); }

/* checkbox rows shown as switches */
.check { display: flex; align-items: center; gap: 12px; margin-block: 4px 12px; }
.check label { cursor: pointer; font-weight: 500; }
.switch input {
  appearance: none; -webkit-appearance: none; flex: none; margin: 0; cursor: pointer;
  width: 46px; height: 28px; border-radius: 999px; background: var(--border); position: relative;
  transition: background-color 0.15s;
}
.switch input::after {
  content: ""; position: absolute; inset-block-start: 3px; inset-inline-start: 3px;
  width: 22px; height: 22px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  transition: inset-inline-start 0.15s;
}
.switch input:checked { background: var(--primary); }
.switch input:checked::after { inset-inline-start: 21px; }

/* callouts */
.callout { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: 14px; font-size: 0.92rem; background: var(--surface-2); border: 1px solid var(--border-soft); margin-block: 4px 0; }
.callout-info { background: var(--primary-soft); border-color: transparent; color: var(--text); }
.callout-info .callout-icon { color: var(--primary); }
.callout-warn { background: var(--warn-bg); border-color: transparent; color: var(--warn); margin-block-end: 12px; }
.callout-icon { flex: none; margin-block-start: 1px; }
.callout-title { font-weight: 700; margin-block-end: 2px; }

/* buttons */
.buttons { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-block-start: 8px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 50px; padding: 0 20px; border-radius: 14px; border: 1.5px solid transparent;
  font: 600 1rem var(--font); cursor: pointer; text-decoration: none;
  transition: background-color 0.15s, border-color 0.15s, transform 0.05s;
}
html[lang="ar"] .btn { font-family: var(--font-ar); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: var(--primary-ink); flex: 1 1 auto; box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 30%, transparent); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--primary); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--text); background: var(--surface-2); }
.btn-sm { min-height: 40px; padding: 0 16px; border-radius: 12px; font-size: 0.92rem; flex: none; box-shadow: none; }

/* ---------- result ---------- */
.result { padding: 0; overflow: hidden; border: 0; box-shadow: var(--shadow-lg); }
.res-hero { padding: 22px 22px 24px; background: linear-gradient(160deg, var(--hero-1), var(--hero-2)); color: var(--hero-ink); }
.res-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.res-head h2 { font-size: 1.05rem; font-weight: 600; color: var(--hero-muted); }
.badge { padding: 4px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; background: var(--sun); color: #3d2b00; }
html[lang="ar"] .badge { text-transform: none; letter-spacing: 0; font-size: 0.82rem; }
.total-label { margin-block-start: 14px; font-size: 0.88rem; color: var(--hero-muted); }
.total { font-size: clamp(2.3rem, 9vw, 3.1rem); font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.res-for { margin-block-start: 6px; color: var(--hero-muted); font-size: 0.92rem; }
.res-body { padding: 18px 22px 22px; }

.breakdown { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
.breakdown th { text-align: start; font-weight: 400; color: var(--muted); padding: 9px 0; padding-inline-end: 12px; vertical-align: top; }
.breakdown td { text-align: end; font-weight: 600; padding: 9px 0; white-space: nowrap; font-variant-numeric: tabular-nums; vertical-align: top; }
.breakdown td.wrap-ok { white-space: normal; }
.breakdown tr + tr th, .breakdown tr + tr td { border-block-start: 1px solid var(--border-soft); }
#res-info { background: var(--surface-2); }
#res-info th, #res-info td { padding-block: 8px; }
#res-info tr th { padding-inline-start: 12px; }
#res-info tr td { padding-inline-end: 12px; }
#res-info tr:first-child th { border-start-start-radius: 12px; }
#res-info tr:first-child td { border-start-end-radius: 12px; }
#res-info tr:last-child th { border-end-start-radius: 12px; }
#res-info tr:last-child td { border-end-end-radius: 12px; }
#res-money tr:first-child th, #res-money tr:first-child td { padding-block-start: 16px; }
.breakdown .row-cal th, .breakdown .row-cal td { color: var(--primary); }
.breakdown .row-total th, .breakdown .row-total td { border-block-start: 2px solid var(--text); font-size: 1.1rem; font-weight: 700; color: var(--text); padding-block: 12px; }
.breakdown .row-perkwh th, .breakdown .row-perkwh td { font-size: 0.86rem; }
.breakdown .row-pay:first-of-type th, .breakdown .row-perkwh + .row-pay th, .breakdown .row-perkwh + .row-pay td { padding-block-start: 16px; }
.breakdown .row-topay th, .breakdown .row-topay td { border-block-start: 2px dashed var(--primary); color: var(--primary); font-weight: 700; font-size: 1.05rem; padding-block: 12px; }
.res-topay { margin-block-start: 10px; display: inline-block; padding: 6px 12px; border-radius: 999px; background: rgba(255, 255, 255, 0.14); font-weight: 600; }
.note { margin-block-start: 12px; padding: 10px 12px; border-radius: 12px; background: var(--surface-2); color: var(--muted); font-size: 0.84rem; }

.cliff, .chart { margin-block-start: 20px; padding-block-start: 18px; border-block-start: 1px solid var(--border-soft); }
.cliff .muted { font-size: 0.9rem; margin-block: 4px 10px; }
.cliff-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.cliff-list li { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: 14px; font-size: 0.92rem; }
.cliff-icon { flex: none; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; font-size: 0.7rem; }
.cliff-up { background: var(--err-bg); }
.cliff-up .cliff-icon { background: var(--err); color: var(--err-bg); }
.cliff-down { background: var(--ok-soft); }
.cliff-down .cliff-icon { background: var(--ok); color: var(--ok-soft); }
.cliff-top { background: var(--surface-2); }
.cliff-top .cliff-icon { background: var(--muted); color: var(--surface); }

/* tier chart: positioned with logical properties, so it mirrors in RTL */
.chart-plot { padding-block-start: 46px; margin-block-start: 6px; }
.chart-bar { position: relative; height: 40px; }
.chart-segs { position: absolute; inset: 0; border-radius: 12px; overflow: hidden; background: var(--surface-3); }
.chart-seg {
  position: absolute; inset-block: 0; inset-inline-start: var(--x); width: var(--w);
  display: flex; align-items: center; justify-content: center; overflow: hidden; white-space: nowrap;
  font-size: 0.78rem; font-weight: 700; color: var(--tier-text);
  border-inline-end: 2px solid var(--surface);
  print-color-adjust: exact; -webkit-print-color-adjust: exact;
}
.chart-seg.is-current { box-shadow: inset 0 0 0 3px var(--text); font-size: 0.88rem; }
.tier-c0 { background: var(--tier-0); } .tier-c1 { background: var(--tier-1); } .tier-c2 { background: var(--tier-2); }
.tier-c3 { background: var(--tier-3); } .tier-c4 { background: var(--tier-4); } .tier-c5 { background: var(--tier-5); }
.chart-you { position: absolute; inset-block: -10px; inset-inline-start: var(--x); width: 3px; margin-inline-start: -1px; background: var(--text); border-radius: 2px; }
.chart-you::after { content: ""; position: absolute; inset-block-start: -3px; inset-inline-start: -5px; width: 13px; height: 13px; border-radius: 50%; background: var(--text); box-shadow: 0 0 0 3px var(--surface); }
.chart-you-label, .chart-tick { position: absolute; white-space: nowrap; transform: translateX(-50%); }
html[dir="rtl"] .chart-you-label, html[dir="rtl"] .chart-tick { transform: translateX(50%); }
.chart-you-label { inset-block-end: calc(100% + 8px); inset-inline-start: 0; font-weight: 700; font-size: 0.85rem; padding: 2px 8px; border-radius: 999px; background: var(--text); color: var(--surface); }
.edge-start { transform: none !important; }
.edge-end { transform: translateX(-100%) !important; }
html[dir="rtl"] .edge-end { transform: translateX(100%) !important; }
.chart-you-label.edge-start { inset-inline-start: -4px; }
.chart-you-label.edge-end { inset-inline-start: 4px; }
.chart-ticks { position: relative; height: 1.6em; margin-block-start: 6px; font-size: 0.78rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.chart-tick { inset-inline-start: var(--x); inset-block-start: 0; }
.chart-tick::before { content: ""; position: absolute; inset-block-start: -5px; inset-inline-start: 50%; width: 1px; height: 4px; background: var(--muted); }
.chart-tick.edge-start::before { inset-inline-start: 0; }
.chart-unit { font-size: 0.78rem; color: var(--muted); text-align: end; }
.chart-legend { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 6px; }
.chart-legend li { display: flex; align-items: center; gap: 10px; font-size: 0.88rem; color: var(--muted); }
.chart-legend li.is-current { color: var(--text); font-weight: 700; }
.chart-legend .swatch { flex: none; width: 16px; height: 16px; border-radius: 5px; }
.chart-legend .mark { flex: none; width: 1.1em; text-align: center; font-weight: 700; color: var(--primary); }

.res-actions { margin-block-start: 20px; }
.res-actions .btn { flex: 1 1 140px; }
.copy-status { flex-basis: 100%; font-size: 0.88rem; color: var(--ok); font-weight: 600; min-height: 1.2em; }

/* placeholder until there is a result */
.res-empty { display: grid; justify-items: center; gap: 10px; text-align: center; color: var(--muted); padding-block: 34px; border-style: dashed; border-color: var(--border); box-shadow: none; background: var(--surface); }
.res-empty svg { color: var(--primary); }
#result:not([hidden]) ~ .res-empty { display: none; }
@media (max-width: 959px) { .res-empty { display: none; } }

.disclaimer { display: flex; gap: 10px; align-items: flex-start; padding: 14px 16px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border-soft); color: var(--muted); font-size: 0.86rem; }
.disclaimer svg { flex: none; margin-block-start: 1px; }

/* ---------- calibration, guide, FAQ ---------- */
details.card { padding: 0; }
details.card > summary {
  display: flex; align-items: center; gap: 12px; padding: 18px 20px; cursor: pointer; list-style: none;
  font-weight: 700; font-size: 1.02rem;
}
details.card > summary::-webkit-details-marker { display: none; }
details.card > summary::after {
  content: ""; margin-inline-start: auto; flex: none; width: 22px; height: 22px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6' fill='none' stroke='%235a6b7d' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 22px no-repeat;
  transition: transform 0.2s;
}
details.card[open] > summary::after { transform: rotate(180deg); }
.sum-icon { flex: none; color: var(--primary); padding: 6px; width: 34px; height: 34px; border-radius: 10px; background: var(--primary-soft); }
.details-body { padding: 0 20px 20px; }
.details-body > .muted { margin-block-end: 14px; font-size: 0.92rem; }
.cal-out { margin-block-start: 12px; display: grid; gap: 8px; }
.cal-out #cal-msg:not(:empty) { padding: 12px 14px; border-radius: 12px; background: var(--surface-2); font-weight: 500; }
.cal-verdict { padding: 10px 12px; border-radius: 12px; background: var(--ok-soft); color: var(--ok); font-size: 0.9rem; font-weight: 500; }
.cal-verdict.is-big { background: var(--warn-bg); color: var(--warn); }
#calApplyWrap { margin-block-start: 12px; }

.guide h2, .faq h2 { margin-block-end: 16px; }
.guide-grid { display: grid; gap: 20px; }
@media (min-width: 760px) { .guide-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }
.guide article h3 { margin-block-end: 10px; }
.guide figure { margin: 0 0 10px; padding: 14px; border-radius: 16px; background: var(--surface-2); }
.meter-fig { display: block; width: 100%; max-width: 300px; height: auto; margin-inline: auto; }
.guide figcaption { margin-block-start: 8px; text-align: center; font-size: 0.86rem; color: var(--muted); }
.guide ol { margin: 0; padding-inline-start: 1.3em; display: grid; gap: 6px; font-size: 0.95rem; }
.guide > .callout { margin-block-start: 18px; }

.faq details { border-block-start: 1px solid var(--border-soft); }
.faq details:last-child { border-block-end: 1px solid var(--border-soft); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 0; cursor: pointer; font-weight: 600; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--surface-3); font-weight: 600; color: var(--primary); }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-block-end: 14px; color: var(--muted); }

/* ---------- footer ---------- */
.footer { background: var(--hero-1); color: var(--hero-muted); padding-block: 28px calc(28px + env(safe-area-inset-bottom)); font-size: 0.88rem; }
.footer-inner { display: grid; gap: 6px; }
.footer-brand { display: flex; align-items: center; gap: 8px; color: var(--hero-ink); font-weight: 700; margin-block-end: 6px; }
.footer a { color: #ffffff; }

/* ---------- phone: the total follows you until the result is on screen ---------- */
.totalbar {
  position: fixed; inset-inline: 0; inset-block-end: 0; z-index: 30;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-block-start: 1px solid var(--border-soft); box-shadow: 0 -8px 24px rgba(15, 40, 70, 0.1);
}
.totalbar-inner { max-width: 640px; margin-inline: auto; display: flex; align-items: center; gap: 12px; }
.totalbar-label { font-size: 0.82rem; color: var(--muted); line-height: 1.2; }
.totalbar-value { margin-inline-end: auto; font-size: 1.25rem; font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
@media (min-width: 960px) { .totalbar { display: none !important; } }
@media (max-width: 959px) {
  body.has-totalbar .footer { padding-block-end: calc(96px + env(safe-area-inset-bottom)); }
  html:has(body.has-totalbar) { scroll-padding-bottom: 96px; } /* focused fields never hide under the bar */
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- print: keep the result, the breakdown and the disclaimer ---------- */
@media print {
  :root {
    --bg: #fff; --surface: #fff; --surface-2: #f3f3f3; --surface-3: #eee; --text: #000; --muted: #333;
    --border: #999; --border-soft: #ccc; --hero-1: #fff; --hero-2: #fff; --hero-ink: #000; --hero-muted: #333;
    --err-bg: #fff; --ok-soft: #fff; --warn-bg: #fff;
    --primary: #0b5ea8; --primary-soft: #e7f1fb; --primary-ink: #fff; --err: #b42318; --ok: #157a52; --warn: #8a5300;
    --tier-0: #c9ecc9; --tier-1: #a5dca5; --tier-2: #f9e38a; --tier-3: #f9c27c; --tier-4: #f6a07e; --tier-5: #ee7f7f; --tier-text: #000;
  }
  body { background: #fff; color: #000; font-size: 11pt; }
  .skip-link, .lang-switch, .hero, .col-main, .res-empty, .cal, .extras, .res-actions, .totalbar { display: none !important; }
  .appbar { position: static; background: #fff; color: #000; backdrop-filter: none; }
  .layout { display: block; margin: 0; }
  .col-side { position: static; }
  .card, .result { box-shadow: none; border: 1px solid #999; }
  .result { break-inside: auto; } /* a tall card may continue on the next page instead of leaving page 1 empty */
  .res-hero, .breakdown tr, .cliff, .cliff-list li, .chart, .disclaimer { break-inside: avoid; }
  .cliff h3, .chart h3 { break-after: avoid; }
  .appbar-inner { padding: 0 0 8px; }
  .res-hero { background: #fff; color: #000; border-block-end: 1px solid #ccc; }
  .badge { border: 1px solid #000; background: #fff; color: #000; }
  .disclaimer { border: 1px solid #999; margin-block-start: 12px; }
  .footer { background: #fff; color: #000; border-block-start: 1px solid #999; }
  .footer a { color: #000; }
  .footer a::after { content: " (" attr(href) ")"; word-break: break-all; }
}