/* ===================================================================
   virgilioborges.com.br — sistema visual compartilhado
   paleta: papel / tinta / pinho / ambar · serif+sans+mono
=================================================================== */

:root{
  --paper:#EEF0EA;
  --paper-raised:#E4E7DE;
  --ink:#181C17;
  --ink-soft:#4B534A;
  --line:#C7CCBE;
  --pine:#2B6E5E;
  --pine-deep:#1E4F44;
  --amber:#AD6E28;
  --red:#B5493A;
  --mono: 'JetBrains Mono', monospace;
  --serif: 'Source Serif 4', serif;
  --sans: 'Inter', sans-serif;
  --maxw: 1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--pine-deep);}
a:hover{color:var(--amber);}
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:3px;
}
img{max-width:100%; display:block;}

.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px;}

/* NAV -------------------------------------------------------------- */
header.site{
  position:sticky; top:0; z-index:20;
  background:rgba(238,240,234,0.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.navbar{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}
.brand{
  font-family:var(--mono); font-size:14px; letter-spacing:0.02em;
  color:var(--ink); text-decoration:none; font-weight:600;
}
.brand span{color:var(--pine);}
nav.links{display:flex; gap:22px; flex-wrap:wrap;}
nav.links a{
  font-family:var(--mono); font-size:13px; text-decoration:none;
  color:var(--ink-soft); position:relative; padding:2px 0;
}
nav.links a:hover, nav.links a.active{color:var(--pine-deep);}
.nav-toggle{display:none;}

/* BREADCRUMB --------------------------------------------------------*/
.crumb{
  font-family:var(--mono); font-size:12px; color:var(--ink-soft);
  padding:16px 0 0;
}
.crumb a{color:var(--ink-soft); text-decoration:none; border-bottom:1px solid var(--line);}
.crumb a:hover{color:var(--pine-deep); border-color:var(--pine-deep);}

/* PAGE HERO (páginas internas) ---------------------------------------*/
.page-hero{padding:28px 0 40px; border-bottom:1px solid var(--line);}
.eyebrow{
  font-family:var(--mono); font-size:12px; letter-spacing:0.12em;
  text-transform:uppercase; color:var(--pine-deep); margin:0 0 14px;
  display:flex; align-items:center; gap:8px;
}
.eyebrow::before{
  content:""; width:18px; height:1px; background:var(--pine-deep); display:inline-block;
}
h1.page-title{
  font-family:var(--serif); font-weight:700;
  font-size:clamp(1.9rem, 4.6vw, 2.8rem);
  line-height:1.1; margin:0 0 14px; color:var(--ink);
}
.page-sub{font-size:15.5px; color:var(--ink-soft); max-width:60ch; margin:0;}

/* HERO (home) ---------------------------------------------------------*/
.hero{padding:64px 0 48px; border-bottom:1px solid var(--line);}
.hero-grid{display:grid; grid-template-columns:1.15fr 0.85fr; gap:56px; align-items:start;}

.hero-id-row{display:flex; align-items:flex-end; gap:24px; margin-bottom:6px;}
.hero-photo{
  width:104px; height:104px; object-fit:cover; border-radius:10px;
  border:2px solid var(--pine); box-shadow:0 12px 26px -14px rgba(20,25,15,.5);
  flex-shrink:0; transform:rotate(-2deg);
  background:var(--paper-raised);
}
.hero-id-text{min-width:0;}

h1.name{
  font-family:var(--serif); font-weight:700;
  font-size:clamp(2.4rem, 4.2vw, 3.9rem);
  line-height:0.98; margin:0 0 18px; color:var(--ink);
  letter-spacing:-0.01em;
  position:relative;
}
h1.name .name-accent{
  display:block;
  font-weight:400; font-style:italic; color:var(--pine-deep);
  font-size:0.72em; margin-top:2px;
}
h1.name::after{
  content:""; display:block; width:56px; height:3px; margin-top:16px;
  background:var(--amber); border-radius:2px;
}
.roles{list-style:none; margin:0 0 24px; padding:0; font-size:15.5px;}
.roles li{padding:7px 0 7px 18px; border-left:2px solid var(--line); margin-bottom:2px; color:var(--ink-soft);}
.roles li strong{color:var(--ink); font-weight:600;}
.roles a{color:var(--pine-deep); text-decoration:underline; text-decoration-color:var(--line); text-underline-offset:3px;}
.contact-line{font-family:var(--mono); font-size:13.5px; color:var(--ink-soft); margin:18px 0 20px;}
.tags{display:flex; flex-wrap:wrap; gap:8px; margin-top:10px;}
.tag{font-family:var(--mono); font-size:12px; padding:5px 10px; border:1px solid var(--line); border-radius:3px; color:var(--ink-soft); background:var(--paper-raised);}

/* TERMINAL --------------------------------------------------------- */
.terminal{background:#12160F; border-radius:8px; overflow:hidden; box-shadow:0 18px 40px -20px rgba(20,25,15,0.45); border:1px solid #2A2F22;}
.term-bar{display:flex; align-items:center; gap:6px; padding:10px 14px; background:#191E13; border-bottom:1px solid #2A2F22;}
.term-dot{width:9px; height:9px; border-radius:50%;}
.term-dot.r{background:#C15D4A;} .term-dot.y{background:#C79A46;} .term-dot.g{background:#5E9D6E;}
.term-title{margin-left:8px; font-family:var(--mono); font-size:11.5px; color:#8A9080;}
.term-body{padding:20px 18px 24px; font-family:var(--mono); font-size:13px; color:#C9D3BE; min-height:210px;}
.term-body .line{margin:0 0 10px; white-space:pre-wrap;}
.term-body .prompt{color:#5E9D6E;}
.term-body .out{color:#8A9080;}
.cursor{display:inline-block; width:7px; height:14px; background:#C9D3BE; vertical-align:text-bottom; animation:blink 1s steps(1) infinite;}
@keyframes blink{50%{opacity:0;}}

/* SECTIONS ----------------------------------------------------------*/
section.block{padding:52px 0; border-bottom:1px solid var(--line);}
.section-head{display:flex; align-items:baseline; gap:14px; margin-bottom:28px;}
.section-num{font-family:var(--mono); font-size:13px; color:var(--pine); border:1px solid var(--pine); border-radius:3px; padding:3px 8px;}
h2.section-title{font-family:var(--serif); font-size:1.5rem; margin:0; font-weight:600; color:var(--ink);}

.card-grid{display:grid; grid-template-columns:repeat(3, 1fr); gap:16px;}
.card{border:1px solid var(--line); border-radius:6px; padding:18px 18px 20px; background:var(--paper-raised); text-decoration:none; color:var(--ink); display:flex; flex-direction:column; gap:8px; transition:border-color .15s, transform .15s;}
.card:hover{border-color:var(--pine); transform:translateY(-2px);}
.card .k{font-family:var(--mono); font-size:11px; color:var(--pine-deep); letter-spacing:.05em;}
.card .t{font-weight:600; font-size:15px; line-height:1.35;}
.card .arrow{margin-top:auto; font-family:var(--mono); font-size:12px; color:var(--ink-soft);}

/* PUBLICATIONS --------------------------------------------------------*/
.pub-list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:18px;}
.pub{display:grid; grid-template-columns:110px 1fr; gap:18px; padding-bottom:18px; border-bottom:1px dashed var(--line);}
.pub:last-child{border-bottom:none; padding-bottom:0;}
.pub-key{font-family:var(--mono); font-size:12.5px; color:var(--amber); font-weight:600; padding-top:2px;}
.pub-text{font-size:14.5px; color:var(--ink-soft);}
.pub-text a{color:var(--ink); font-weight:600; text-decoration:none; border-bottom:1px solid var(--line);}
.pub-text a:hover{color:var(--pine-deep); border-color:var(--pine-deep);}

/* TWO COLUMN ----------------------------------------------------------*/
.two-col{display:grid; grid-template-columns:1fr 1fr; gap:40px;}
h3.mini-title{font-family:var(--mono); font-size:12px; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-soft); margin:0 0 14px;}
ul.plain{list-style:none; margin:0; padding:0;}
ul.plain li{padding:8px 0; border-bottom:1px solid var(--line); font-size:14.5px;}
ul.plain li:last-child{border-bottom:none;}
ul.plain a{text-decoration:none; color:var(--ink);}
ul.plain a:hover{color:var(--pine-deep);}

/* ARTICLE (termo de uso, textos longos) --------------------------------*/
.article{font-size:15.5px; color:var(--ink-soft); max-width:70ch;}
.article h2{font-family:var(--serif); font-size:1.25rem; color:var(--ink); margin:32px 0 10px; font-weight:600;}
.article h2:first-child{margin-top:0;}
.article p{margin:0 0 14px;}

/* LIST PAGES (alunos, downloads) ---------------------------------------*/
.res-list{list-style:none; margin:0 0 8px; padding:0; display:flex; flex-direction:column; gap:2px;}
.res-list li{border-bottom:1px solid var(--line);}
.res-list a{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:13px 4px; text-decoration:none; color:var(--ink); font-size:14.5px;
}
.res-list a:hover{color:var(--pine-deep);}
.res-list .ext{font-family:var(--mono); font-size:11px; color:var(--ink-soft); border:1px solid var(--line); border-radius:3px; padding:2px 7px; flex-shrink:0;}

/* BUTTONS --------------------------------------------------------------*/
.btn{
  font-family:var(--mono); font-size:13px; padding:10px 16px; border-radius:5px;
  border:1px solid var(--pine); color:var(--pine-deep); background:transparent;
  text-decoration:none; cursor:pointer; display:inline-flex; align-items:center; gap:8px;
  transition:background .15s, color .15s;
}
.btn:hover{background:var(--pine); color:#fff;}
.btn.primary{background:var(--pine); color:#fff;}
.btn.primary:hover{background:var(--pine-deep);}
.btn.ghost{border-color:var(--line); color:var(--ink-soft);}
.btn.ghost:hover{border-color:var(--pine); color:var(--pine-deep); background:none;}
.btn:disabled{opacity:.4; cursor:not-allowed; background:none; color:var(--ink-soft);}

/* SIMULATOR SHELL --------------------------------------------------------*/
.sim-panel{
  border:1px solid var(--line); border-radius:8px; background:var(--paper-raised);
  padding:22px; margin-bottom:24px;
}
.sim-controls{display:flex; flex-wrap:wrap; gap:14px; align-items:end; margin-bottom:6px;}
.field{display:flex; flex-direction:column; gap:6px;}
.field label{font-family:var(--mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-soft);}
.field input, .field select{
  font-family:var(--mono); font-size:14px; padding:9px 11px; border:1px solid var(--line);
  border-radius:5px; background:var(--paper); color:var(--ink); width:150px;
}
.field input:focus, .field select:focus{border-color:var(--pine);}
.sim-actions{display:flex; gap:10px; flex-wrap:wrap;}

.sim-visual{
  border:1px solid var(--line); border-radius:8px; background:var(--paper);
  padding:24px; min-height:160px; display:flex; align-items:flex-end; gap:8px;
  overflow-x:auto;
}
.sim-visual.empty::after{content:"vazio"; font-family:var(--mono); font-size:12.5px; color:var(--ink-soft); margin:auto;}
.slot{
  min-width:52px; height:52px; border:1px solid var(--pine); border-radius:5px;
  display:flex; align-items:center; justify-content:center; font-family:var(--mono);
  font-size:14px; font-weight:600; color:var(--pine-deep); background:var(--paper-raised);
  flex-shrink:0; transition:transform .2s, background .2s;
}
.slot.head{border-color:var(--amber); color:var(--amber);}
.slot.tail{border-color:var(--red); color:var(--red);}
.slot.new{transform:scale(1.08);}

.bars{display:flex; align-items:flex-end; gap:4px; height:220px; width:100%;}
.bar{
  flex:1; background:var(--pine); border-radius:3px 3px 0 0; min-width:6px;
  display:flex; align-items:flex-end; justify-content:center; transition:height .25s ease, background .15s;
  position:relative;
}
.bar.compare{background:var(--amber);}
.bar.swap{background:var(--red);}
.bar.sorted{background:var(--pine-deep);}

.sim-output{
  font-family:var(--mono); font-size:12.5px; color:var(--ink-soft);
  background:var(--paper-raised); border:1px solid var(--line); border-radius:6px;
  padding:14px 16px; max-height:180px; overflow-y:auto; margin-top:16px;
}
.sim-output p{margin:0 0 4px;}
.sim-output p:last-child{margin-bottom:0;}
.sim-stats{display:flex; gap:22px; margin-top:16px; flex-wrap:wrap;}
.stat{font-family:var(--mono); font-size:12.5px; color:var(--ink-soft);}
.stat b{display:block; font-size:20px; color:var(--ink); font-weight:600;}

.note{
  font-size:13px; color:var(--ink-soft); background:var(--paper-raised);
  border-left:2px solid var(--pine); padding:10px 14px; border-radius:0 4px 4px 0; margin-top:18px;
}

/* FOOTER ---------------------------------------------------------------*/
footer.site{padding:32px 0 48px;}
.foot-row{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; font-family:var(--mono); font-size:12px; color:var(--ink-soft);}
.foot-row a{color:var(--ink-soft); text-decoration:underline; text-decoration-color:var(--line);}
.foot-row a:hover{color:var(--pine-deep);}

/* RESPONSIVE -------------------------------------------------------------*/
@media (max-width: 860px){
  .hero-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .two-col{grid-template-columns:1fr;}
  nav.links{display:none;}
  .nav-toggle{
    display:inline-flex; align-items:center; justify-content:center;
    width:34px; height:34px; border:1px solid var(--line); border-radius:5px; background:none; cursor:pointer;
  }
  .nav-toggle svg{width:16px; height:16px;}
  header.site.open nav.links{
    display:flex; flex-direction:column; position:absolute; top:100%; left:0; right:0;
    background:var(--paper); border-bottom:1px solid var(--line); padding:16px 24px; gap:14px;
  }
}
@media (max-width: 560px){
  .card-grid{grid-template-columns:1fr;}
  .pub{grid-template-columns:1fr; gap:6px;}
  .hero{padding:44px 0 36px;}
  .field input, .field select{width:120px;}
  .hero-photo{width:76px; height:76px;}
  .hero-id-row{gap:16px;}
}

@media (prefers-reduced-motion: reduce){
  .cursor{animation:none;}
  html{scroll-behavior:auto;}
  .bar, .slot{transition:none;}
}