/* andreaihara.com.br — folha única do site */

:root{
  --paper:#F1F3F5;
  --surface:#FFFFFF;
  --ink:#11161B;
  --muted:#5B6773;
  --line:#D9DFE5;
  --accent:#15625E;
  --accent-soft:#DCEAE8;
  --warn:#8C3B2E;
  --viewer:#0B0E11;
  --viewer-ink:#C9D2DA;
  --viewer-line:#2A333C;

  --sans:"IBM Plex Sans","Helvetica Neue",Arial,sans-serif;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --mono:"IBM Plex Mono","SFMono-Regular",Consolas,monospace;

  --col:68ch;
  --wide:1080px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0D1114; --surface:#151B21; --ink:#E4EAF0; --muted:#93A0AC;
    --line:#232C34; --accent:#57B6AE; --accent-soft:#16302F; --warn:#D08064;
    --viewer:#07090B; --viewer-ink:#C9D2DA; --viewer-line:#242D35;
  }
}
:root[data-theme="dark"]{
  --paper:#0D1114; --surface:#151B21; --ink:#E4EAF0; --muted:#93A0AC;
  --line:#232C34; --accent:#57B6AE; --accent-soft:#16302F; --warn:#D08064;
  --viewer:#07090B; --viewer-ink:#C9D2DA; --viewer-line:#242D35;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--serif);font-size:19px;line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
.wrap{max-width:var(--wide);margin:0 auto;padding:0 24px}
.col{max-width:var(--col);margin:0 auto}
a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

/* topo */
.masthead{border-bottom:1px solid var(--line);padding:20px 0 18px;margin-bottom:56px}
.masthead .wrap{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap}
.brand{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);text-decoration:none}
.brand b{color:var(--ink);font-weight:500}
.brand:hover b{color:var(--accent)}
.issue{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted)}

/* home */
.hero{margin-bottom:64px}
.hero h1{
  font-family:var(--sans);font-weight:700;font-size:clamp(1.9rem,4.6vw,2.7rem);
  line-height:1.08;letter-spacing:-.025em;margin:0 0 18px;text-wrap:balance;
}
.hero p{margin:0 0 1em;color:var(--muted);font-size:1.08rem;text-wrap:pretty}
.hero p.first{color:var(--ink)}

.section-label{
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin:0 0 6px;
}

.postlist{list-style:none;padding:0;margin:0}
.postlist li{border-bottom:1px solid var(--line)}
.postlist a.card{
  display:block;padding:26px 0;text-decoration:none;color:inherit;
}
.postlist a.card:hover h2{color:var(--accent)}
.postlist h2{
  font-family:var(--sans);font-weight:600;font-size:1.3rem;letter-spacing:-.015em;
  line-height:1.24;margin:0 0 8px;text-wrap:balance;
}
.postlist p{margin:0 0 12px;color:var(--muted);font-size:1rem;text-wrap:pretty}
.meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}

.chip{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);border:1px solid var(--line);border-radius:2px;padding:4px 8px;
}
.chip.key{color:var(--accent);border-color:var(--accent);background:var(--accent-soft)}

/* post */
header.post{margin-bottom:44px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
h1.title{
  font-family:var(--sans);font-weight:700;font-size:clamp(2rem,5.2vw,3.1rem);
  line-height:1.06;letter-spacing:-.025em;text-wrap:balance;margin:0 0 20px;
}
.dek{font-family:var(--serif);font-style:italic;font-weight:300;font-size:1.22rem;line-height:1.5;color:var(--muted);margin:0 0 28px;text-wrap:pretty}
.byline{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}
.byline b{color:var(--ink);font-weight:500}
.byline span.sep{color:var(--line)}

article p{margin:0 0 1.15em;text-wrap:pretty}
article h2{font-family:var(--sans);font-weight:600;font-size:1.42rem;letter-spacing:-.015em;line-height:1.22;margin:2.4em 0 .7em;text-wrap:balance}
article h2::before{content:"";display:block;width:34px;height:2px;background:var(--accent);margin-bottom:.7em}
strong{font-weight:600}
.lede:first-letter{float:left;font-family:var(--sans);font-weight:700;font-size:3.4rem;line-height:.82;padding:.06em .12em 0 0;color:var(--accent)}

.dx{list-style:none;padding:0;margin:1.4em 0 1.8em;display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.dx li{background:var(--surface);padding:13px 16px;font-size:.94rem;line-height:1.5}
.dx b{font-family:var(--sans);font-size:.88rem;font-weight:600;display:block;margin-bottom:2px}
.dx span{color:var(--muted)}

.pitfall{border-left:3px solid var(--warn);padding:4px 0 4px 20px;margin:2em 0}
.pitfall .lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--warn);display:block;margin-bottom:8px}
.pitfall ol{margin:0;padding-left:1.1em}
.pitfall li{margin-bottom:.5em;font-size:.97rem}

/* visualizador */
.viewer{background:var(--viewer);margin:3em 0;border-radius:3px;overflow:hidden}
.viewer-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid var(--viewer-line);font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--viewer-ink)}
.viewer-bar .seq{color:#6F7D8A}
.stage{position:relative;aspect-ratio:4/3;background:var(--viewer)}
.slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .28s ease}
.slide[data-active="true"]{opacity:1;visibility:visible}
.slide img{max-width:100%;max-height:100%;object-fit:contain;display:block}
.nav{position:absolute;top:50%;transform:translateY(-50%);width:38px;height:52px;border:0;cursor:pointer;background:rgba(11,14,17,.55);color:#D6DEE5;font-family:var(--sans);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center}
.nav:hover{background:rgba(11,14,17,.85)}
.nav.prev{left:0;border-radius:0 3px 3px 0}
.nav.next{right:0;border-radius:3px 0 0 3px}
.viewer-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 14px;border-top:1px solid var(--viewer-line);flex-wrap:wrap}
.caption{font-family:var(--mono);font-size:11.5px;line-height:1.5;color:var(--viewer-ink);margin:0;flex:1 1 300px}
.dots{display:flex;gap:7px}
.dot{width:7px;height:7px;padding:0;border:0;border-radius:50%;background:#39434D;cursor:pointer}
.dot[aria-current="true"]{background:var(--accent)}
.counter{font-family:var(--mono);font-size:11px;color:#6F7D8A;font-variant-numeric:tabular-nums}

.practice{counter-reset:step;list-style:none;padding:0;margin:1.4em 0}
.practice li{counter-increment:step;position:relative;padding-left:44px;margin-bottom:.85em;font-size:1rem}
.practice li::before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:.12em;font-family:var(--mono);font-size:12px;color:var(--accent);border:1px solid var(--accent);border-radius:2px;padding:1px 5px}

.report{background:var(--surface);border:1px solid var(--line);padding:22px 24px;margin:2.4em 0;border-radius:3px}
.report h3{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 14px;font-weight:400}
.report ul{margin:0;padding-left:1.15em}
.report li{margin-bottom:.4em;font-size:.97rem}

.refs{margin-top:3.4em;border-top:1px solid var(--line);padding-top:26px}
.refs h2{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 16px;font-weight:400}
.refs h2::before{display:none}
.refs ol{margin:0;padding-left:1.3em}
.refs li{font-size:.9rem;line-height:1.55;margin-bottom:.75em;color:var(--muted)}
.refs b{color:var(--ink);font-weight:500}
.pmid{font-family:var(--mono);font-size:.82rem}

footer.site{margin:64px 0 0;border-top:1px solid var(--line);padding:22px 0 60px;font-family:var(--mono);font-size:11px;line-height:1.7;color:var(--muted)}
footer.site a{color:var(--muted)}

@media (prefers-reduced-motion: reduce){.slide{transition:none}}
@media (max-width:600px){
  body{font-size:18px}
  .stage{aspect-ratio:1/1}
}