/* Blog STLTracer — CSS compartilhado entre todos os posts */

*{box-sizing:border-box;margin:0;padding:0}

:root{
  /* Dark (default) */
  --bg:#0a0e14;
  --bg2:#11161c;
  --surface:#161b22;
  --surface2:#1c2128;
  --border:#21262d;
  --border2:#30363d;
  --text:#e6edf3;
  --text2:#8b949e;
  --text3:#484f58;
  --accent:#16a34a;
  --accent-light:#22c55e;
  --accent-glow:rgba(34,197,94,0.10);
  --accent-border:rgba(34,197,94,0.28);
  --danger:#ef4444;
  --shadow-card:0 8px 24px rgba(0,0,0,0.25);
  --nav-bg:rgba(10,14,20,0.88);
}

[data-theme="light"]{
  --bg:#fafafa;
  --bg2:#ffffff;
  --surface:#ffffff;
  --surface2:#f4f4f5;
  --border:#e4e4e7;
  --border2:#d4d4d8;
  --text:#18181b;
  --text2:#52525b;
  --text3:#a1a1aa;
  --accent:#16a34a;
  --accent-light:#15803d;
  --accent-glow:rgba(22,163,74,0.08);
  --accent-border:rgba(22,163,74,0.3);
  --danger:#dc2626;
  --shadow-card:0 4px 12px rgba(0,0,0,0.06);
  --nav-bg:rgba(255,255,255,0.92);
}

html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter','Segoe UI',-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  transition:background .2s ease, color .2s ease;
}
a{color:var(--accent-light);text-decoration:none;transition:color .15s}
a:hover{color:var(--accent);text-decoration:underline}

/* NAV */
nav{
  position:sticky;top:0;z-index:100;
  padding:0 24px;
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  background:var(--nav-bg);
  border-bottom:1px solid var(--border);
  transition:background .2s ease;
}
.nav-inner{max-width:760px;margin:0 auto;height:60px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.nav-logo{
  font-family:'Space Mono',ui-monospace,monospace;
  font-size:14px;font-weight:700;color:var(--text);
  display:flex;align-items:center;gap:10px;letter-spacing:-0.5px;text-decoration:none
}
.nav-logo:hover{text-decoration:none}
.nav-logo-dot{width:9px;height:9px;background:var(--accent-light);border-radius:50%;box-shadow:0 0 10px var(--accent-light)}
.nav-controls{display:flex;align-items:center;gap:8px}
.nav-ctrl-btn{
  background:transparent;border:1px solid var(--border);color:var(--text2);
  font-size:12px;font-weight:500;cursor:pointer;
  padding:6px 10px;border-radius:6px;
  display:inline-flex;align-items:center;gap:5px;
  transition:all .15s;font-family:inherit
}
.nav-ctrl-btn:hover{border-color:var(--border2);color:var(--text)}
.nav-ctrl-btn svg{width:14px;height:14px}
.nav-cta{
  background:var(--accent);color:#fff;
  font-size:13px;font-weight:600;
  padding:7px 14px;border-radius:7px;text-decoration:none;
  white-space:nowrap;transition:all .15s
}
.nav-cta:hover{background:#15803d;color:#fff;text-decoration:none}

/* LANG dropdown */
.lang-wrap{position:relative}
.lang-menu{
  position:absolute;right:0;top:calc(100% + 6px);
  background:var(--surface);border:1px solid var(--border);border-radius:8px;
  padding:4px;min-width:130px;
  box-shadow:var(--shadow-card);
  display:none;z-index:200
}
.lang-wrap.open .lang-menu{display:block}
.lang-opt{
  display:flex;align-items:center;gap:8px;
  padding:7px 10px;border-radius:5px;
  font-size:13px;color:var(--text);cursor:pointer;
  text-decoration:none
}
.lang-opt:hover{background:var(--surface2);text-decoration:none}
.lang-opt.active{background:var(--accent-glow);color:var(--accent-light)}

/* ARTICLE */
article{max-width:720px;margin:0 auto;padding:48px 24px 80px}
.breadcrumb{font-size:13px;color:var(--text3);margin-bottom:16px}
.breadcrumb a{color:var(--text2)}
.breadcrumb span{color:var(--text3);margin:0 6px}
.meta-row{display:flex;align-items:center;gap:16px;color:var(--text3);font-size:13px;margin-bottom:24px;flex-wrap:wrap}
.meta-row .dot{width:3px;height:3px;background:var(--text3);border-radius:50%}
.tag{
  display:inline-block;
  background:var(--accent-glow);border:1px solid var(--accent-border);color:var(--accent-light);
  font-size:11px;font-weight:600;letter-spacing:0.5px;text-transform:uppercase;
  padding:4px 10px;border-radius:100px;margin-bottom:18px
}
h1{font-size:clamp(28px,4.5vw,42px);font-weight:800;line-height:1.15;letter-spacing:-1px;margin-bottom:20px;color:var(--text)}
h2{font-size:clamp(22px,3vw,28px);font-weight:700;line-height:1.25;letter-spacing:-0.5px;margin:48px 0 16px;padding-top:12px;border-top:1px solid var(--border);color:var(--text)}
h3{font-size:18px;font-weight:600;margin:28px 0 12px;color:var(--text)}
p{margin-bottom:16px;color:var(--text)}
ul,ol{margin:0 0 20px 24px;color:var(--text)}
li{margin-bottom:8px}
strong{color:var(--text);font-weight:700}
em{color:var(--text2);font-style:italic}
.lead{font-size:18px;color:var(--text2);line-height:1.65;margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--border)}
blockquote{margin:24px 0;padding:16px 20px;background:var(--accent-glow);border-left:3px solid var(--accent);border-radius:6px}
blockquote p{margin:0;color:var(--text);font-size:15px;line-height:1.65}

.callout{margin:32px 0;padding:20px 24px;background:var(--surface);border:1px solid var(--border);border-radius:10px}
.callout-title{font-weight:700;color:var(--accent-light);font-size:13px;letter-spacing:0.5px;text-transform:uppercase;margin-bottom:10px}
.callout p{margin:0}

.compare{margin:32px 0;border:1px solid var(--border);border-radius:10px;overflow:hidden;width:100%;border-collapse:collapse;font-size:14px}
.compare th,.compare td{padding:14px 16px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;color:var(--text)}
.compare th{background:var(--surface);font-weight:700;font-size:13px}
.compare td:first-child{font-weight:600;background:var(--surface2);width:34%}
.compare .yes{color:var(--accent-light)}
.compare .no{color:var(--danger)}

.cta-box{margin:48px 0 24px;padding:32px;background:linear-gradient(135deg,var(--surface) 0%,var(--surface2) 100%);border:1px solid var(--accent-border);border-radius:14px;text-align:center}
.cta-box h3{font-size:22px;margin:0 0 10px;color:var(--text)}
.cta-box p{color:var(--text2);font-size:15px;margin-bottom:20px}
.cta-btn{display:inline-block;background:var(--accent);color:#fff;font-size:15px;font-weight:600;padding:13px 28px;border-radius:9px;text-decoration:none;transition:all .2s}
.cta-btn:hover{background:#15803d;color:#fff;text-decoration:none;box-shadow:0 0 30px rgba(34,197,94,0.3)}
.cta-fineprint{display:block;margin-top:12px;font-size:12px;color:var(--text3)}

.faq{margin:48px 0}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:16px 20px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;font-size:15px;color:var(--text);list-style:none;outline:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';float:right;color:var(--text3);font-weight:400;font-size:20px;line-height:1}
.faq details[open] summary::after{content:'\2212'}
.faq details p{margin:12px 0 0;color:var(--text2);font-size:14px;line-height:1.65}

.author-box{margin:48px 0 0;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:10px;display:flex;gap:18px;align-items:flex-start}
.author-avatar{width:56px;height:56px;border-radius:50%;flex-shrink:0;background:var(--accent-glow);object-fit:cover}
.author-info h4{font-size:15px;font-weight:700;margin:0 0 4px;color:var(--text)}
.author-info p{font-size:13px;color:var(--text2);margin:0;line-height:1.6}

.related{margin-top:64px;padding-top:32px;border-top:1px solid var(--border)}
.related-title{font-size:13px;font-weight:700;letter-spacing:0.8px;text-transform:uppercase;color:var(--text3);margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.related-card{display:block;padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:10px;transition:all .15s;text-decoration:none}
.related-card:hover{border-color:var(--accent-border);text-decoration:none}
.related-card h5{font-size:15px;font-weight:700;color:var(--text);margin:0 0 6px;line-height:1.35}
.related-card p{font-size:13px;color:var(--text2);margin:0;line-height:1.55}

/* INDEX (lista de posts) */
.hero{max-width:920px;margin:0 auto;padding:64px 24px 32px;text-align:center}
.hero-badge{
  display:inline-block;
  background:var(--accent-glow);border:1px solid var(--accent-border);color:var(--accent-light);
  font-size:11px;font-weight:600;letter-spacing:0.6px;text-transform:uppercase;
  padding:5px 12px;border-radius:100px;margin-bottom:18px
}
.hero h1{font-size:clamp(34px,5vw,52px);font-weight:800;line-height:1.1;letter-spacing:-1.5px;margin-bottom:16px}
.hero p{font-size:18px;color:var(--text2);max-width:540px;margin:0 auto;line-height:1.6}
main{max-width:920px;margin:0 auto;padding:32px 24px 80px}
.posts{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:24px;transition:all .2s;text-decoration:none}
.post-card:hover{border-color:var(--accent-border);transform:translateY(-2px);box-shadow:var(--shadow-card);text-decoration:none}
.post-meta{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.post-lang{font-size:10px;font-weight:700;letter-spacing:1px;color:var(--accent-light);background:var(--accent-glow);border:1px solid var(--accent-border);padding:3px 8px;border-radius:4px}
.post-date{font-size:12px;color:var(--text3)}
.post-card h2{font-size:18px;font-weight:700;line-height:1.3;letter-spacing:-0.3px;color:var(--text);margin:0 0 10px;border:none;padding:0}
.post-card p{color:var(--text2);font-size:14px;line-height:1.55;flex:1}
.post-readmore{margin-top:14px;color:var(--accent-light);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:4px}

footer{padding:32px 24px;border-top:1px solid var(--border);text-align:center;color:var(--text3);font-size:13px}
footer a{color:var(--text2);margin:0 10px}

@media (max-width:640px){
  body{font-size:15px}
  article{padding:32px 20px 60px}
  .nav-cta{padding:6px 12px;font-size:12px}
  .cta-box{padding:24px 20px}
  .author-box{flex-direction:column;align-items:center;text-align:center}
  .hero{padding:48px 20px 24px}
  .hero h1{font-size:32px}
  .hero p{font-size:16px}
  main{padding:24px 20px 60px}
  .post-card{padding:20px}
  .compare,.compare th,.compare td{display:block;width:100%}
  .compare th{display:none}
  .compare td:first-child{background:var(--surface);font-size:11px;letter-spacing:0.5px;text-transform:uppercase;color:var(--text3);width:100%;border-bottom:none;padding-bottom:4px}
  .compare tr{border-bottom:1px solid var(--border);padding:8px 0}
}