/* Rodolfo Vilas Bôas — Professional site
   Clean editorial style + strong About + Blog
*/

:root{
  --bg:#0b0f17;
  --panel:rgba(255,255,255,.06);
  --panel2:rgba(255,255,255,.09);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.66);
  --border:rgba(255,255,255,.12);
  --brand:#ff7a18;
  --brand2:#6ee7ff;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --ring:0 0 0 4px rgba(255,122,24,.18);
  --radius:16px;
  --max:1120px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  --sans:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";
  --serif:ui-serif,Georgia,Cambria,"Times New Roman",Times,serif;
}

html[data-theme="light"]{
  --bg:#f6f7fb;
  --panel:rgba(0,0,0,.05);
  --panel2:rgba(0,0,0,.08);
  --text:rgba(0,0,0,.9);
  --muted:rgba(0,0,0,.62);
  --border:rgba(0,0,0,.12);
  --shadow:0 12px 24px rgba(0,0,0,.12);
  --ring:0 0 0 4px rgba(255,122,24,.20);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--sans);
  background:
    radial-gradient(900px 500px at 10% 0%, rgba(255,122,24,.10), transparent 60%),
    radial-gradient(800px 600px at 95% 5%, rgba(110,231,255,.10), transparent 55%),
    radial-gradient(900px 700px at 60% 100%, rgba(134,239,172,.08), transparent 60%),
    var(--bg);
  color:var(--text);
  line-height:1.55;
  letter-spacing:.2px;
}

a{color:inherit;text-decoration:none}
a:hover{opacity:.92}

.container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
.row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.spread{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}

header{
  position:sticky;top:0;z-index:50;
  backdrop-filter: blur(10px);
  background:linear-gradient(to bottom, rgba(0,0,0,.35), rgba(0,0,0,0));
  border-bottom:1px solid rgba(255,255,255,.06);
}
html[data-theme="light"] header{
  background:linear-gradient(to bottom, rgba(255,255,255,.75), rgba(255,255,255,0));
  border-bottom:1px solid rgba(0,0,0,.08);
}

.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 0;gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:240px}
.mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg, rgba(255,122,24,.92), rgba(110,231,255,.70));
  box-shadow:var(--shadow);
}
.brand .name{font-weight:750;letter-spacing:.4px}
.brand .tag{display:block;font-size:12px;color:var(--muted);margin-top:-2px}

nav ul{
  list-style:none;display:flex;gap:14px;align-items:center;
  padding:0;margin:0;flex-wrap:wrap;justify-content:flex-end
}
nav a{
  font-size:13px;color:var(--muted);
  padding:8px 10px;border-radius:10px;
  border:1px solid transparent;transition:.18s ease;
}
nav a.active, nav a:hover{
  color:var(--text);background:var(--panel);border-color:rgba(255,255,255,.10)
}

.actions{display:flex;gap:10px;align-items:center;justify-content:flex-end;min-width:240px}

.btn{
  display:inline-flex;gap:10px;align-items:center;justify-content:center;
  padding:10px 12px;border-radius:12px;
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--text);
  font-weight:650;font-size:13px;
  cursor:pointer;transition:.18s ease;
  user-select:none;white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);background:var(--panel2)}
.btn.primary{
  border-color:rgba(255,122,24,.25);
  background:linear-gradient(135deg, rgba(255,122,24,.20), rgba(110,231,255,.12));
}
.btn.primary:hover{box-shadow:var(--ring)}
.badge{
  font-family:var(--mono);font-size:12px;color:var(--muted);
  border:1px solid var(--border);background:var(--panel);
  border-radius:999px;padding:7px 10px
}

main{padding:22px 0 0}
.hero{
  padding:34px 0 18px;
}
.card{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow);
}
html[data-theme="light"] .card{
  background:rgba(255,255,255,.70);
  border-color:rgba(0,0,0,.10);
}

.grid{
  display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start;
}
@media (max-width:980px){.grid{grid-template-columns:1fr}.actions,.brand{min-width:auto}}

h1{
  font-family:var(--serif);
  font-weight:850;letter-spacing:.2px;margin:0 0 10px;
  line-height:1.05;font-size:clamp(30px,4vw,46px)
}
h2{
  font-family:var(--serif);
  margin:0;font-size:24px;letter-spacing:.2px
}
h3{
  margin:0 0 10px;font-size:14px;letter-spacing:.6px;
  text-transform:uppercase;color:var(--muted)
}
.subtitle{color:var(--muted);font-size:16px;margin:0 0 18px;max-width:70ch}

.section{padding:20px 0}
.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:18px;margin-bottom:14px;flex-wrap:wrap}
.section-lead{color:var(--muted);font-size:14px;max-width:75ch;margin:6px 0 0}

.two{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
@media (max-width:900px){.two{grid-template-columns:1fr}}

.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:980px){.tiles{grid-template-columns:1fr}}

.tile{
  padding:16px;border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.03);
  transition:.18s ease;
}
html[data-theme="light"] .tile{
  background:rgba(255,255,255,.70);
  border-color:rgba(0,0,0,.10);
}
.tile:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.tile h4{margin:0 0 6px;font-size:16px}
.tile p{margin:0;color:var(--muted);font-size:14px}

.list{margin:0;padding-left:18px;color:var(--muted)}
.list li{margin:8px 0}
.emph{color:var(--text);font-weight:700}

hr.sep{border:none;border-top:1px solid rgba(255,255,255,.10);margin:18px 0}
html[data-theme="light"] hr.sep{border-top-color:rgba(0,0,0,.10)}

.footer{
  padding:24px 0 38px;color:var(--muted);font-size:13px;
  border-top:1px solid rgba(255,255,255,.08);margin-top:10px
}
html[data-theme="light"] .footer{border-top-color:rgba(0,0,0,.08)}
.small-links a{color:var(--muted);border-bottom:1px dashed transparent}
.small-links a:hover{border-bottom-color:rgba(255,122,24,.45);color:var(--text)}

kbd{
  font-family:var(--mono);
  border:1px solid var(--border);
  background:var(--panel);
  border-radius:8px;
  padding:2px 6px;
  font-size:12px;
}

input, textarea, select{
  width:100%;
  padding:12px 12px;border-radius:12px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.18);
  color:var(--text);
  outline:none;transition:.18s ease;
  font-family:var(--sans);
}
html[data-theme="light"] input, html[data-theme="light"] textarea, html[data-theme="light"] select{
  background:rgba(255,255,255,.9);
  color:rgba(0,0,0,.9);
}
input:focus, textarea:focus, select:focus{box-shadow:var(--ring);border-color:rgba(255,122,24,.35)}
textarea{min-height:140px;resize:vertical}

.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:980px){.post-grid{grid-template-columns:1fr}}
.post-card{
  display:flex;flex-direction:column;gap:10px;
  padding:16px;border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.03);
  min-height:190px;
}
html[data-theme="light"] .post-card{
  background:rgba(255,255,255,.70);
  border-color:rgba(0,0,0,.10);
}
.kicker{font-family:var(--mono);font-size:12px;color:var(--muted)}
.post-card h4{margin:0;font-size:16px;line-height:1.25}
.post-card p{margin:0;color:var(--muted);font-size:14px}
.post-card a.more{
  margin-top:auto;
  color:var(--text);font-weight:700;font-size:13px;
  display:inline-flex;gap:8px;align-items:center;width:fit-content;
  padding:8px 10px;border-radius:12px;background:var(--panel);
  border:1px solid rgba(255,255,255,.10);
}
html[data-theme="light"] .post-card a.more{border-color:rgba(0,0,0,.10)}

.article{
  max-width: 78ch;
  margin: 0 auto;
  padding: 10px 0 0;
}
.article h1{font-size:clamp(28px, 3.4vw, 42px)}
.article p{color:var(--text);opacity:.95}
.article .meta{color:var(--muted);font-family:var(--mono);font-size:12px;margin-top:-4px}
.article .toc{
  margin: 14px 0 0;
  padding: 14px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: var(--panel);
}
html[data-theme="light"] .article .toc{border-color:rgba(0,0,0,.10)}
.article .toc b{display:block;margin-bottom:6px}
.article .toc a{color:var(--muted)}
.article .toc a:hover{color:var(--text)}
.article blockquote{
  margin: 18px 0;
  padding: 14px 16px;
  border-left: 3px solid rgba(255,122,24,.55);
  background: rgba(255,255,255,.03);
  border-radius: 12px;
  color: var(--muted);
}
html[data-theme="light"] .article blockquote{background: rgba(0,0,0,.04)}
.article code{
  font-family: var(--mono);
  font-size: 13px;
  background: var(--panel);
  border:1px solid rgba(255,255,255,.10);
  padding: 2px 6px;
  border-radius: 8px;
}
html[data-theme="light"] .article code{border-color: rgba(0,0,0,.10)}
.article pre{
  overflow:auto;
  background: rgba(0,0,0,.25);
  border:1px solid rgba(255,255,255,.10);
  padding: 14px;
  border-radius: 14px;
}
html[data-theme="light"] .article pre{background: rgba(0,0,0,.04);border-color: rgba(0,0,0,.10)}
.article pre code{background:transparent;border:none;padding:0}

.toast{
  position:fixed;right:18px;bottom:18px;
  background:rgba(0,0,0,.72);color:rgba(255,255,255,.95);
  border:1px solid rgba(255,255,255,.12);
  padding:12px 14px;border-radius:14px;
  box-shadow:var(--shadow);
  opacity:0;transform:translateY(8px);pointer-events:none;
  transition:.22s ease;z-index:99;max-width:340px;font-size:13px
}
html[data-theme="light"] .toast{
  background:rgba(255,255,255,.92);color:rgba(0,0,0,.88);
  border-color:rgba(0,0,0,.12)
}
.toast.show{opacity:1;transform:translateY(0)}


/* --- Blog taxonomy (tags/categories) --- */
.pills{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 10px;border-radius:999px;
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--muted);
  font-size:12px;
  cursor:pointer;
  user-select:none;
  transition:.18s ease;
}
.pill:hover{background:var(--panel2);transform:translateY(-1px)}
.pill.active{
  color:var(--text);
  border-color: rgba(255,122,24,.35);
  background: linear-gradient(135deg, rgba(255,122,24,.18), rgba(110,231,255,.10));
  box-shadow: var(--ring);
}
.pill .dot{width:8px;height:8px;border-radius:99px;background:rgba(255,122,24,.7);opacity:.75}

.pager{
  display:flex;gap:10px;align-items:center;flex-wrap:wrap;
  justify-content: space-between;
  margin-top: 14px;
}
.pager .left, .pager .right{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.page-indicator{font-family:var(--mono);font-size:12px;color:var(--muted)}
/* Newsletter */
.newsletter{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 14px;
  align-items: start;
}
@media (max-width:980px){.newsletter{grid-template-columns:1fr}}
.newsletter .note{color:var(--muted);font-size:13px;margin-top:8px}