/* Layout: cabeçalho e rodapé do site stonebrick.pt (fundo escuro, tipografia branca) envolvem uma calculadora em duas colunas: dados à esquerda, resultado fixo à direita. */
:root{
  --bg:#000;--surface:#171717;--surface2:#0d0d0d;--line:#2b2b2b;--fg:#fff;--muted:#a3a9b3;
  --accent:#1777F3;--accent2:#5DA0F6;--accent3:#9DC3FA;--neg:#8b929d;--onaccent:#fff;--track:#2f2f2f;
  --font-h:'Sora',system-ui,sans-serif;--font-b:'IBM Plex Sans',system-ui,sans-serif;
}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]){--bg:#fff;--surface:#EEF1F6;--surface2:#f6f8fb;--line:#dde2ea;--fg:#171717;--muted:#555;--accent:#1777F3;--accent2:#5DA0F6;--accent3:#9DC3FA;--neg:#171717;--track:#d4dae4;color-scheme:light}}
:root[data-theme="light"]{--bg:#fff;--surface:#EEF1F6;--surface2:#f6f8fb;--line:#dde2ea;--fg:#171717;--muted:#555;--accent:#1777F3;--accent2:#5DA0F6;--accent3:#9DC3FA;--neg:#171717;--track:#d4dae4;color-scheme:light}
:root{color-scheme:dark}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]){color-scheme:light}}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font-family:var(--font-b);font-size:15px;line-height:1.55;margin:0}
h1,h2,h3{font-family:var(--font-h);font-weight:600;margin:0;text-wrap:balance;letter-spacing:-.01em}
a{color:inherit}
.wrap{max-width:1240px;margin:0 auto;padding-inline:20px}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent2);font-weight:600}
/* header */
header.site{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:24px;height:68px}
.logo{height:24px;width:auto;display:block}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]) .logo{filter:brightness(0)}}
:root[data-theme="light"] .logo{filter:brightness(0)}
:root[data-theme="dark"] .logo{filter:none}
nav.main{display:flex;gap:22px;margin-left:auto;font-size:14px}
nav.main a{text-decoration:none;color:var(--muted);padding:6px 0}
nav.main a:hover,nav.main a.on{color:var(--fg)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600;font-size:14px;padding:10px 18px;border-radius:6px;border:1px solid var(--accent);cursor:pointer;font-family:var(--font-b)}
.btn:hover{background:var(--accent2);border-color:var(--accent2)}
.btn.ghost{background:transparent;color:var(--fg);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--accent);background:transparent}
:focus-visible{outline:2px solid var(--accent2);outline-offset:2px}
@media(max-width:860px){nav.main{display:none}header.site .btn{margin-left:auto}}
/* hero */
.hero{padding-bottom:28px}
.hero h1{font-size:clamp(28px,3.6vw,40px);line-height:1.12;max-width:22ch;margin-top:12px}
.hero p{color:var(--muted);max-width:62ch;margin:14px 0 0;font-size:15.5px}
/* app */
.app{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:24px;align-items:start;padding-block:44px 40px}
@media(max-width:980px){.app{grid-template-columns:minmax(0,1fr)}}
.card{min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:24px}
.card+.card{margin-top:20px}
.card h2{font-size:18px;display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.card h2 small{font-family:var(--font-b);font-weight:400;font-size:13px;color:var(--muted)}
.lead{color:var(--muted);font-size:13.5px;margin:6px 0 18px;max-width:70ch}
label,.lbl{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:6px}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(200px,100%),1fr));gap:16px}
select,input[type=number]{width:100%;background:var(--bg);color:var(--fg);border:1px solid var(--line);border-radius:6px;padding:10px 12px;font:inherit;font-variant-numeric:tabular-nums}
select:hover,input[type=number]:hover{border-color:var(--accent)}
.seg{display:flex;flex-wrap:wrap;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.seg button{flex:1 1 120px;background:var(--bg);color:var(--muted);border:0;border-right:1px solid var(--line);padding:10px 6px;font:inherit;font-size:13px;cursor:pointer;min-width:0}
.seg button:last-child{border-right:0}
.seg button[aria-pressed=true]{background:var(--accent);color:#fff;font-weight:600}
.hint{font-size:12.5px;color:var(--muted);margin-top:8px}
/* factors */
.factor{display:grid;grid-template-columns:minmax(168px,260px) minmax(0,1fr) 92px;gap:14px;align-items:center;padding:12px 0;border-top:1px solid var(--line)}
.factor:first-of-type{border-top:0}
.factor .n{font-weight:600;font-size:14px}
.factor .d{font-size:12px;color:var(--muted);line-height:1.35;margin-top:2px}
.factor .w{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;margin-top:4px}
.factor .v{text-align:right;font-variant-numeric:tabular-nums;font-size:13px}
.factor .v b{display:block;font-family:var(--font-h);font-size:15px}
.factor .v span{color:var(--muted);font-size:12px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:24px;background:transparent;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:4px;background:var(--track);border-radius:2px}
input[type=range]::-moz-range-track{height:4px;background:var(--track);border-radius:2px}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);border:2px solid var(--bg);margin-top:-7px;cursor:pointer}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--accent);border:2px solid var(--bg);cursor:pointer}
.ticks{display:flex;justify-content:space-between;font-size:10.5px;color:var(--muted);margin-top:0;padding-inline:2px}
@media(max-width:600px){.factor{grid-template-columns:1fr 80px}.factor .sl{grid-column:1/-1;order:3}}
/* result */
.result{position:sticky;top:calc(84px + env(safe-area-inset-top,0px))}
@media(min-width:981px){.result{margin-top:0}}
@media(max-width:980px){.result{position:static}}
.hero-num{font-family:var(--font-h);font-weight:700;font-size:clamp(56px,7vw,76px);line-height:1;color:var(--accent2);font-variant-numeric:tabular-nums;margin:8px 0 4px}
.sub{color:var(--muted);font-size:13.5px}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:6px;overflow:hidden;margin:20px 0}
.kpis div{background:var(--surface);padding:12px 14px}
.kpis .k{font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.kpis .x{font-family:var(--font-h);font-size:20px;font-weight:600;font-variant-numeric:tabular-nums}
.formula{font-family:var(--font-b);font-size:13.5px;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:12px 14px;font-variant-numeric:tabular-nums;overflow-x:auto;white-space:nowrap}
.formula b{color:var(--accent2)}
.verdict{margin-top:16px;padding:14px;border-radius:6px;border:1px solid var(--line);background:var(--bg)}
.verdict .t{font-family:var(--font-h);font-weight:600;font-size:15px}
.verdict.ok{border-color:var(--accent)}
.verdict.ok .t{color:var(--accent2)}
.pill{display:inline-block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:600;padding:3px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.pill.on{border-color:var(--accent);color:var(--accent2)}
/* scale */
.scale{position:relative;height:74px;margin:22px 8px 10px}
.scale .bar{position:absolute;left:0;right:0;top:34px;height:6px;background:var(--track);border-radius:3px}
.scale .fill{position:absolute;top:34px;height:6px;background:var(--accent);border-radius:3px;opacity:.9}
.mk{position:absolute;top:0;transform:translateX(-50%);text-align:center;font-size:11px;color:var(--muted);white-space:nowrap;line-height:1.25}
.mk i{display:block;width:2px;height:16px;background:var(--muted);margin:2px auto 0}
.mk.m{color:var(--accent2);font-weight:600}.mk.m i{background:var(--accent);width:3px}
.mk.lo{top:44px}.mk.lo i{margin:0 auto 2px;order:-1}
.mk.lo{display:flex;flex-direction:column-reverse}
.mk.lo i{height:12px}
/* charts */
.bars{display:grid;gap:8px;margin-top:6px}
.brow{display:grid;grid-template-columns:110px minmax(0,1fr) 62px;gap:10px;align-items:center;font-size:13px}
.brow .val{text-align:right;font-variant-numeric:tabular-nums;color:var(--muted)}
.div{position:relative;height:18px;background:linear-gradient(var(--line),var(--line)) center/1px 100% no-repeat}
.div s{position:absolute;top:2px;height:14px;text-decoration:none;border-radius:2px;transition:width .2s,left .2s}
.up{background:var(--accent)}.dn{background:var(--neg);opacity:.8}
.pbar{position:relative;height:16px;background:var(--track);border-radius:2px}
.pbar s{position:absolute;left:0;top:0;bottom:0;text-decoration:none;background:var(--accent2);border-radius:2px;opacity:.5}
.pbar s.sel{background:var(--accent);opacity:1}
.pbar u{position:absolute;top:-3px;bottom:-3px;width:2px;background:var(--fg);text-decoration:none}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:12px}
.legend span::before{content:"";display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:6px;vertical-align:-1px;background:var(--c)}
/* table */
.tw{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums;font-size:14px;min-width:420px}
th,td{padding:10px 12px;text-align:center;border-bottom:1px solid var(--line)}
th{font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600}
th:first-child,td:first-child{text-align:left}
tr.me td{background:var(--accent);color:#fff;font-weight:600}
tr.ref td:first-child{font-weight:600}
td.hl{outline:2px solid var(--accent2);outline-offset:-2px;font-weight:600}
/* method */
.method{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-top:8px}
.method h3{font-size:15px;margin-bottom:6px}
.method p{color:var(--muted);font-size:13.5px;margin:0}
.disc{color:var(--muted);font-size:12.5px;margin-top:20px;max-width:90ch}
.disc a{text-decoration:underline}
/* footer */
footer.site{border-top:1px solid var(--line);margin-top:24px;padding-block:36px 28px;background:var(--surface2)}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
@media(max-width:760px){footer.site .cols{grid-template-columns:1fr 1fr}}
footer.site h4{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 10px;font-weight:600}
footer.site ul{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:14px}
footer.site a{text-decoration:none;color:var(--fg)}footer.site a:hover{color:var(--accent2)}
.copy{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.toast{font-size:12.5px;color:var(--accent2);margin-left:8px;min-height:18px}
.actions{display:flex;gap:10px;margin-top:16px;align-items:center;flex-wrap:wrap}
.tbtn{display:grid;place-items:center;background:none;border:1px solid var(--line);color:var(--muted);border-radius:6px;width:32px;height:32px;padding:0;cursor:pointer}
.tbtn svg{grid-area:1/1;width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tbtn .sun{display:none}.tbtn .moon{display:block}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]) .tbtn .sun{display:block}}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]) .tbtn .moon{display:none}}
:root[data-theme="light"] .tbtn .sun{display:block}
:root[data-theme="light"] .tbtn .moon{display:none}
:root[data-theme="dark"] .tbtn .sun{display:none}
:root[data-theme="dark"] .tbtn .moon{display:block}