/* Energia da Casa. One reading column on a soft green-grey ground; the energy-label scale (green → amber → red) is the brand's accent. */
@font-face { font-family: "Source Sans 3"; src: url(/assets/fonts/source-sans-3.woff2) format("woff2"); font-weight: 200 900; font-display: swap; }
@font-face { font-family: "Barlow Semi Condensed"; src: url(/assets/fonts/barlow-sc-600.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Barlow Semi Condensed"; src: url(/assets/fonts/barlow-sc-700.woff2) format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --bg: #f4f6f2; --card: #ffffff; --ink: #15211c; --muted: #56655e; --line: #d9e1db; --soft: #e8efe9;
  --brand: #0b6b4b; --brand-ink: #ffffff; --brand-soft: #dceee4; --link: #0a6145;
  --sun: #f2b72f; --sun-soft: #fbefd0; --cool: #2563a8; --warm: #c2562a;
  --c1: #1a8a3e; --c2: #4caf3c; --c3: #9cc63b; --c4: #e8c62a; --c5: #f0a12a; --c6: #e8702a; --c7: #d43d2a;
  --display: "Barlow Semi Condensed", "Arial Narrow", "Segoe UI", system-ui, sans-serif;
  --body: "Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1513; --card: #161e1a; --ink: #e5ede8; --muted: #9db0a6; --line: #28342e; --soft: #1d2722;
    --brand: #5cc995; --brand-ink: #0b1a13; --brand-soft: #173126; --link: #7fd8ac;
    --sun: #f4c55a; --sun-soft: #3a2f15; --cool: #80b4ec; --warm: #ef9a6a;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }
@media (max-width: 640px) { html { scroll-padding-top: 0; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 var(--body); }
img, svg { max-width: 100%; }
a { color: var(--link); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.wrap { max-width: 780px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
.wrap.wide { max-width: 1040px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--brand); color: var(--brand-ink); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* header */
.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.top-in { display: flex; align-items: center; gap: 12px; min-height: 58px; flex-wrap: wrap; padding-block: 6px; }
.logo { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: var(--ink); }
.logo-text { font: 700 22px/1 var(--display); letter-spacing: -.01em; }
.logo-text span { color: var(--brand); font-weight: 600; margin: 0 1px; }
.nav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; margin-left: auto; }
.nav::-webkit-scrollbar { display: none; }
.nav a { font-weight: 600; font-size: 15.5px; color: var(--ink); text-decoration: none; padding: 6px 8px; border-radius: 6px; white-space: nowrap; }
.nav a:hover { background: var(--soft); }
.nav a[aria-current="page"] { background: var(--brand-soft); color: var(--link); }
@media (max-width: 640px) { .nav { margin-left: 0; width: 100%; margin-inline: -6px; } .top { position: static; } }

/* type */
main { padding-block: 18px 40px; }
h1 { font: 700 clamp(30px, 6vw, 42px)/1.08 var(--display); letter-spacing: -.01em; margin: 10px 0 14px; text-wrap: balance; }
h2 { font: 700 26px/1.15 var(--display); margin: 34px 0 10px; text-wrap: balance; }
h3 { font-size: 18px; margin: 22px 0 6px; }
.prose p, .prose ul, .prose ol { margin: 0 0 14px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin-bottom: 5px; }
.prose li::marker { color: var(--brand); }
.lead, .prose > p:first-child { font-size: 19px; }
.prose strong, .prose b { font-weight: 700; }
.prose blockquote { margin: 0 0 14px; padding: 10px 14px; border-left: 4px solid var(--sun); background: var(--sun-soft); border-radius: 0 6px 6px 0; }
.prose code { font-family: var(--mono); font-size: .9em; }
.crumbs { font-size: 14px; color: var(--muted); margin-top: 4px; }
.crumbs a { color: var(--muted); }
.updated { color: var(--muted); font-size: 14px; margin-top: 28px; }

/* tables */
.tbl { overflow-x: auto; margin: 6px 0 4px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); }
.tbl table { border-collapse: collapse; width: 100%; font-size: 15.5px; }
.tbl.wide table { min-width: 720px; }
.tbl th, .tbl td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { font-size: 13px; color: var(--muted); background: var(--soft); font-weight: 700; white-space: nowrap; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl .r { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tbl .sub { display: block; font-size: 13px; color: var(--muted); }
.caption { font-size: 13.5px; color: var(--muted); margin: 6px 0 16px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15.5px; margin-bottom: 14px; display: block; overflow-x: auto; }
.prose th, .prose td { padding: 7px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { background: var(--soft); font-size: 13.5px; }
.prose th, .prose td { min-width: 120px; }
.prose td:first-child, .prose th:first-child { min-width: 130px; font-weight: 600; }

/* energy-class chip, coloured like the label arrows */
.cls { display: inline-block; font: 700 12px/18px var(--display); color: #fff; padding: 0 12px 0 6px; margin-left: 4px; clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 50%, calc(100% - 7px) 100%, 0 100%); vertical-align: 1px; }
.cls-Appp { background: var(--c1); } .cls-App { background: var(--c2); } .cls-Ap { background: var(--c3); color: #14210c; }
.cls-A { background: var(--c4); color: #2a2100; } .cls-B { background: var(--c5); color: #2a1800; } .cls-C { background: var(--c6); } .cls-D, .cls-E { background: var(--c7); }

/* calculators */
.widget { margin: 18px 0 22px; }
.calc { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; display: grid; gap: 14px; border-top: 5px solid var(--brand); }
.calc-title { margin: 0; font-size: 23px; }
.calc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px 14px; }
.calc-grid > div { display: grid; gap: 4px; align-content: start; min-width: 0; }
.calc label { font-weight: 600; font-size: 15px; }
.calc input[type="number"], .calc select { font: inherit; font-size: 16px; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; width: 100%; min-width: 0; }
.calc .check { display: flex; align-items: center; gap: 8px; }
.calc .check input { width: 20px; height: 20px; accent-color: var(--brand); margin: 0; }
.calc .check label { font-weight: 400; }
.calc .hint { font-size: 13px; color: var(--muted); }
.calc-out { display: grid; gap: 3px; background: var(--brand-soft); border-radius: 8px; padding: 12px 14px; }
.out-label { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--link); }
.out-big { font: 700 34px/1.1 var(--display); font-variant-numeric: tabular-nums; }
.out-big small { font-size: 20px; font-weight: 600; color: var(--muted); }
.out-line { font-size: 15.5px; }
.calc-note { font-size: 13.5px; color: var(--muted); margin: 0; }
[hidden] { display: none !important; }

/* faq, sources, related */
.faq details { border-top: 1px solid var(--line); padding: 10px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand); font-weight: 700; }
.faq details[open] summary::after { content: "−"; }
.faq-a { padding-top: 6px; }
.faq-a p { margin: 0 0 8px; }
.sources { font-size: 14.5px; color: var(--muted); }
.sources h2 { font-size: 20px; }
.sources ul { padding-left: 20px; }
.related { margin-top: 30px; padding: 14px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
.related h2 { margin: 0 0 8px; font-size: 20px; }
.related ul { margin: 0; padding-left: 20px; columns: 2 260px; column-gap: 24px; }
.related li { margin-bottom: 4px; break-inside: avoid; }
.children .cards { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
.children .cards a { display: grid; gap: 2px; height: 100%; padding: 12px 14px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; text-decoration: none; color: var(--ink); }
.children .cards a:hover { border-color: var(--brand); }
.children .cards b { color: var(--link); }
.children .cards span { font-size: 14.5px; color: var(--muted); }

/* home */
.hero { padding-block: 10px 6px; }
.hero h1 { font-size: clamp(34px, 7vw, 52px); max-width: 18ch; }
.home-facts { margin-top: 18px; display: grid; gap: 10px; }
.hf-head { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 8px 16px; }
.hf-head h2 { margin: 0; font-size: 22px; }
.hf-pick { display: flex; align-items: center; gap: 8px; }
.hf-pick label { font-weight: 600; font-size: 15px; }
.hf-pick select { font: inherit; font-size: 16px; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 6px 10px; max-width: 220px; }
.facts-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; }
.fact { background: var(--card); border: 1px solid var(--line); border-top: 4px solid var(--sun); border-radius: 8px; padding: 12px 14px; display: grid; gap: 4px; align-content: start; }
.fact-title { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.fact-num { font: 700 32px/1.05 var(--display); font-variant-numeric: tabular-nums; }
.fact-num small { font-size: 17px; font-weight: 600; color: var(--muted); margin-left: 2px; }
.fact-text { font-size: 14.5px; color: var(--muted); }
.fact a { font-size: 14.5px; font-weight: 600; margin-top: 2px; }
.hero-fact { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: center; background: var(--card); border: 1px solid var(--line); border-left: 5px solid var(--sun); border-radius: 8px; padding: 12px 16px; margin-top: 16px; }
.hf-num { font: 700 40px/1 var(--display); font-variant-numeric: tabular-nums; }
.hf-txt { font-size: 15.5px; color: var(--muted); }
@media (max-width: 480px) { .hero-fact { grid-template-columns: 1fr; gap: 4px; } }
.sec-cards { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.sec-card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.sec-card > a { text-decoration: none; color: var(--ink); display: block; }
.sec-card h2 { margin: 0 0 4px; color: var(--link); }
.sec-card p { margin: 0 0 8px; color: var(--muted); }
.sec-card ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.sec-card ul a { display: inline-block; font-size: 15px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--brand-soft); text-decoration: none; }
.trust { margin-top: 28px; }
.trust-list { list-style: none; padding: 0; margin: 0 0 10px; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.trust-list li { display: grid; gap: 2px; padding: 12px 14px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; }
.trust-list b { font: 700 19px var(--display); }
.trust-list span { font-size: 14.5px; color: var(--muted); }

/* footer */
.foot { background: var(--card); border-top: 1px solid var(--line); padding-block: 26px 34px; margin-top: 20px; }
.foot-in { display: grid; grid-template-columns: 1.6fr 1fr; gap: 24px; }
.foot-about p { font-size: 14.5px; color: var(--muted); margin: 10px 0 0; }
.foot .fine { font-size: 13px; }
.foot-nav { display: grid; gap: 6px; align-content: start; font-size: 15px; }
@media (max-width: 640px) { .foot-in { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }