/* ============================================================
   Portfolio 3 — Jurandir Junior · "Engineering-grade"
   Dark premium · terminal accents · vanilla CSS
   ============================================================ */

:root{
  --bg:#070a12;
  --bg-alt:#0b0f1a;
  --surface:#10162473;
  --surface-solid:#111827;
  --line:#1e293b;
  --line-soft:#16203a;
  --text:#e6edf7;
  --text-dim:#9aa8bf;
  --text-muted:#64748b;
  --accent:#2dd4bf;
  --accent-2:#818cf8;
  --accent-warm:#fbbf24;
  --grad:linear-gradient(100deg,var(--accent) 0%,var(--accent-2) 100%);
  --font-display:"Sora",system-ui,sans-serif;
  --font-body:"Inter",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;
  --radius:14px;
  --wrap:1160px;
  --shadow:0 20px 60px -20px rgba(0,0,0,.6);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:rgba(45,212,191,.25)}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono)}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

h1,h2,h3{font-family:var(--font-display);line-height:1.15;letter-spacing:-.02em}
h2{font-size:clamp(26px,4vw,40px);font-weight:700}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:13px;
  color:var(--accent);letter-spacing:.08em;margin-bottom:14px;
}
.section{padding:96px 0;position:relative}
.section--alt{background:var(--bg-alt);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:680px;margin-bottom:48px}
.section-head p{color:var(--text-dim);margin-top:14px}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .marquee-track{animation:none!important}
  .term-caret{animation:none!important}
}

/* ---------- scroll progress ---------- */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:120;background:transparent}
.scroll-progress span{display:block;height:100%;width:0;background:var(--grad)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:2px;left:0;right:0;z-index:110;
  background:rgba(7,10,18,.72);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,background .3s ease;
}
.site-header.scrolled{border-bottom-color:var(--line-soft);background:rgba(7,10,18,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  font-family:var(--font-mono);font-weight:700;font-size:14px;color:#06231f;
  background:var(--grad);border-radius:8px;padding:5px 8px;
}
.brand-name{font-family:var(--font-mono);font-size:15px;color:var(--text-dim)}
.brand-name b{color:var(--text)}
.nav-links{display:flex;gap:26px;list-style:none}
.nav-links a{font-size:14px;color:var(--text-dim);transition:color .2s}
.nav-links a:hover{color:var(--accent)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);margin:4px 0;transition:.3s}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);font-weight:600;font-size:15px;
  padding:13px 24px;border-radius:10px;border:1px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,border-color .2s,background .2s;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--grad);color:#06231f;box-shadow:0 8px 30px -10px rgba(45,212,191,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px -10px rgba(45,212,191,.6)}
.btn-ghost{border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{padding:9px 16px;font-size:13px}
.btn-block{width:100%;justify-content:center}

/* ---------- hero ---------- */
.hero{position:relative;padding:170px 0 90px;overflow:hidden}
#hero-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.5;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12.5px;color:var(--accent);
  border:1px solid rgba(45,212,191,.3);background:rgba(45,212,191,.06);
  padding:7px 14px;border-radius:100px;margin-bottom:26px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(45,212,191,.5);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(45,212,191,0)}100%{box-shadow:0 0 0 0 rgba(45,212,191,0)}}
.hero h1{font-size:clamp(34px,5vw,56px);font-weight:800;margin-bottom:22px}
.hero-lede{color:var(--text-dim);font-size:17px;max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:52px}
.hero-metrics{display:grid;grid-template-columns:repeat(4,auto);gap:38px;justify-content:start}
.hero-metrics b{
  display:block;font-family:var(--font-display);font-weight:800;
  font-size:clamp(26px,3vw,36px);background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-metrics span{font-size:12.5px;color:var(--text-muted);line-height:1.45}

/* ---------- terminal ---------- */
.terminal{
  background:#0a0f1c;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;font-family:var(--font-mono);font-size:13.5px;
}
.term-bar{
  display:flex;align-items:center;gap:12px;
  background:#0e1526;border-bottom:1px solid var(--line-soft);padding:11px 16px;
}
.term-dots{display:flex;gap:7px}
.term-dots i{width:11px;height:11px;border-radius:50%;background:#3a465e}
.term-dots i:nth-child(1){background:#f87171}
.term-dots i:nth-child(2){background:#fbbf24}
.term-dots i:nth-child(3){background:#34d399}
.term-title{color:var(--text-muted);font-size:12px}
.term-body{padding:18px 18px 22px;min-height:280px}
.term-line{color:var(--text-dim);margin-bottom:6px;word-break:break-word}
.term-line .term-prompt{color:var(--accent)}
.term-line .out{color:var(--text-muted)}
.term-line .ok{color:#34d399}
.term-line .key{color:var(--accent-2)}
.term-caret{
  display:inline-block;width:8px;height:15px;background:var(--accent);
  vertical-align:text-bottom;margin-left:2px;animation:blink 1s steps(1) infinite;
}
.term-caret.sm{width:6px;height:11px;margin-left:6px}
@keyframes blink{50%{opacity:0}}

/* ---------- quotes strip ---------- */
.strip{border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);background:var(--bg-alt)}
.strip-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:52px 24px}
.quote blockquote{color:var(--text-dim);font-size:15.5px;font-style:italic}
.quote figcaption{margin-top:12px;font-size:12.5px;color:var(--text-muted);font-family:var(--font-mono)}
.stars{color:var(--accent-warm);letter-spacing:2px;margin-right:8px}

/* ---------- sobre ---------- */
.about-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:start}
.about-grid h2{margin-bottom:20px}
.about-grid p{color:var(--text-dim);margin-bottom:16px}
.about-grid strong{color:var(--text)}
.about-ai{border-left:2px solid var(--accent);padding-left:16px;font-size:14.5px}
.about-side{display:flex;flex-direction:column;gap:22px}
.photo-frame{
  position:relative;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;aspect-ratio:4/5;background:var(--surface);
}
.photo-frame img{width:100%;height:100%;object-fit:cover;display:block}
.photo-frame .photo-placeholder{display:none}
.photo-frame.empty img{display:none}
.photo-frame.empty .photo-placeholder{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  position:absolute;inset:0;text-align:center;color:var(--text-muted);
  background:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:28px 28px;
}
.photo-frame.empty .photo-placeholder svg{width:52px;height:52px;opacity:.5}
.photo-frame.empty .photo-placeholder span{font-size:13.5px;line-height:1.6}
.photo-frame.empty .photo-placeholder small{font-family:var(--font-mono);font-size:11px;color:var(--text-muted)}
.photo-tag{
  position:absolute;left:12px;bottom:12px;z-index:1;
  font-size:11px;color:var(--accent);letter-spacing:.04em;
  background:rgba(7,10,18,.78);backdrop-filter:blur(6px);
  border:1px solid rgba(45,212,191,.25);border-radius:100px;padding:5px 12px;
}
.about-facts{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:10px 22px;backdrop-filter:blur(6px);
}
.fact{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-bottom:1px solid var(--line-soft)}
.fact:last-child{border-bottom:0}
.fact-k{font-family:var(--font-mono);font-size:12px;color:var(--text-muted);white-space:nowrap;padding-top:2px}
.fact-v{font-size:13.5px;text-align:right;color:var(--text-dim)}

/* ---------- stack ---------- */
.stack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.stack-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;overflow:hidden;
  transition:border-color .25s ease,transform .25s ease;
}
.stack-card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .3s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(45,212,191,.09),transparent 45%);
  pointer-events:none;
}
.stack-card:hover{border-color:rgba(45,212,191,.35);transform:translateY(-3px)}
.stack-card:hover::before{opacity:1}
.stack-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.stack-card h3 .idx{font-family:var(--font-mono);font-size:11px;color:var(--accent);border:1px solid rgba(45,212,191,.3);border-radius:6px;padding:2px 7px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span{
  font-family:var(--font-mono);font-size:12px;color:var(--text-dim);
  border:1px solid var(--line);border-radius:100px;padding:4px 11px;
  transition:color .2s,border-color .2s;
}
.stack-card:hover .tags span{border-color:var(--line)}
.tags span:hover{color:var(--accent);border-color:rgba(45,212,191,.4)}

/* ---------- marquee ---------- */
.marquee{overflow:hidden;margin-top:64px;border-top:1px solid var(--line-soft);padding:18px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);}
.marquee-track{display:flex;gap:44px;width:max-content;animation:scroll 36s linear infinite}
.marquee-track span{font-family:var(--font-mono);font-size:13px;color:var(--text-muted);white-space:nowrap}
.marquee-track span::before{content:"◆";color:var(--accent);margin-right:12px;font-size:9px;vertical-align:2px}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---------- projetos ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.filter-btn{
  font-family:var(--font-mono);font-size:12.5px;color:var(--text-dim);
  background:none;border:1px solid var(--line);border-radius:100px;
  padding:8px 16px;cursor:pointer;transition:all .2s;
}
.filter-btn:hover{color:var(--accent);border-color:rgba(45,212,191,.4)}
.filter-btn.active{background:var(--grad);color:#06231f;border-color:transparent;font-weight:700}
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.project-card{
  position:relative;display:flex;flex-direction:column;gap:12px;text-align:left;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;cursor:pointer;overflow:hidden;color:var(--text);font:inherit;
  transition:border-color .25s,transform .25s,opacity .3s;
}
.project-card::after{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .35s ease;
}
.project-card:hover{border-color:rgba(129,140,248,.4);transform:translateY(-4px)}
.project-card:hover::after{transform:scaleX(1)}
.project-card.hidden{display:none}
.pc-top{display:flex;justify-content:space-between;align-items:center}
.pc-ref{font-family:var(--font-mono);font-size:11px;color:var(--text-muted)}
.pc-cat{font-family:var(--font-mono);font-size:11px;color:var(--accent);border:1px solid rgba(45,212,191,.3);border-radius:100px;padding:3px 10px}
.project-card h3{font-size:17px}
.project-card p{font-size:13.5px;color:var(--text-dim);flex:1}
.pc-stack{display:flex;flex-wrap:wrap;gap:6px}
.pc-stack span{font-family:var(--font-mono);font-size:11px;color:var(--text-muted);background:var(--line-soft);border-radius:6px;padding:3px 8px}
.pc-open{font-family:var(--font-mono);font-size:12px;color:var(--accent-2);margin-top:4px}

/* ---------- timeline ---------- */
.timeline{position:relative;max-width:720px;padding-left:34px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:1px;background:var(--line)}
.tl-item{position:relative;padding-bottom:42px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-30px;top:6px;width:13px;height:13px;border-radius:50%;
  background:var(--bg);border:2px solid var(--text-muted);
}
.tl-item.current .tl-dot{border-color:var(--accent);background:var(--accent);box-shadow:0 0 14px rgba(45,212,191,.6)}
.tl-period{font-family:var(--font-mono);font-size:12px;color:var(--accent);letter-spacing:.05em}
.tl-item h3{font-size:18px;margin:7px 0 8px}
.tl-item p{color:var(--text-dim);font-size:14.5px;max-width:600px}

/* ---------- contato ---------- */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:start}
.contact h2{margin-bottom:14px}
.contact-lede{color:var(--text-dim);margin-bottom:34px}
.contact-list{display:flex;flex-direction:column;gap:10px;max-width:420px}
.contact-list a{
  display:flex;align-items:center;gap:15px;padding:13px 16px;
  border:1px solid var(--line);border-radius:12px;transition:border-color .2s,background .2s;
}
.contact-list a:hover{border-color:rgba(45,212,191,.4);background:rgba(45,212,191,.04)}
.contact-list svg{width:21px;height:21px;color:var(--accent);flex-shrink:0}
.contact-list b{display:block;font-size:14px}
.contact-list small{color:var(--text-muted);font-size:12.5px}

.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;display:flex;flex-direction:column;gap:16px;backdrop-filter:blur(6px);
}
.form-row{display:flex;flex-direction:column;gap:7px}
.form-row label{font-family:var(--font-mono);font-size:12px;color:var(--text-muted)}
.form-row input,.form-row select,.form-row textarea{
  background:#0a0f1c;border:1px solid var(--line);border-radius:10px;
  color:var(--text);font-family:var(--font-body);font-size:14.5px;padding:12px 14px;
  transition:border-color .2s;
}
.form-row textarea{min-height:110px;resize:vertical}
.form-row :focus{outline:none;border-color:var(--accent)}
.form-note{font-size:12px;color:var(--text-muted)}
.form-note.ok{color:#34d399}
.form-note.error{color:#f87171}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line-soft);padding:26px 0}
.footer-row{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-muted)}
.footer-sig{font-family:var(--font-mono);font-size:12px}

#to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;z-index:100;
  background:var(--surface-solid);border:1px solid var(--line);border-radius:12px;
  color:var(--text);cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s,border-color .2s;
}
#to-top svg{width:18px;height:18px}
#to-top.show{opacity:1;pointer-events:auto}
#to-top:hover{border-color:var(--accent)}

/* ---------- modal ---------- */
.modal-overlay{
  position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;
  background:rgba(4,6,12,.8);backdrop-filter:blur(8px);padding:24px;
  opacity:0;pointer-events:none;transition:opacity .3s;
}
.modal-overlay.open{opacity:1;pointer-events:auto}
.modal-card{
  position:relative;background:var(--bg-alt);border:1px solid var(--line);
  border-radius:18px;max-width:640px;width:100%;max-height:86vh;overflow-y:auto;
  transform:translateY(16px) scale(.98);transition:transform .3s;
}
.modal-overlay.open .modal-card{transform:none}
.modal-close{
  position:sticky;top:14px;float:right;margin:14px 14px 0 0;z-index:2;
  background:var(--surface-solid);border:1px solid var(--line);border-radius:10px;
  color:var(--text);width:34px;height:34px;cursor:pointer;font-size:14px;
}
.modal-close:hover{border-color:var(--accent)}
.modal-head{padding:30px 30px 6px}
.modal-ref{font-size:12px;color:var(--accent)}
.modal-head h3{font-size:24px;margin:10px 0 6px}
.modal-client{font-size:13px;color:var(--text-muted);font-family:var(--font-mono)}
.modal-body{padding:16px 30px 30px;display:flex;flex-direction:column;gap:20px}
.modal-label{
  display:block;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--accent);margin-bottom:7px;
}
.modal-block p{color:var(--text-dim);font-size:14.5px}
.modal-stack{display:flex;flex-wrap:wrap;gap:8px}
.modal-stack span{font-family:var(--font-mono);font-size:12px;color:var(--text-dim);border:1px solid var(--line);border-radius:100px;padding:4px 12px}
.modal-quote{border-left:2px solid var(--accent-warm);padding-left:16px}
.modal-quote p{font-style:italic}
.modal-quote cite{display:block;margin-top:8px;font-size:12px;color:var(--text-muted);font-style:normal;font-family:var(--font-mono)}
.modal-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:4px}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .stack-grid,.project-grid{grid-template-columns:repeat(2,1fr)}
  .strip-grid{grid-template-columns:1fr}
  .hero{padding-top:140px}
  .hero-metrics{grid-template-columns:repeat(2,auto);gap:26px 44px}
}
@media (max-width:660px){
  .stack-grid,.project-grid{grid-template-columns:1fr}
  .nav-links{
    position:fixed;top:70px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(7,10,18,.97);border-bottom:1px solid var(--line);
    padding:10px 24px 18px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links li{padding:10px 0}
  .nav-toggle{display:block}
  .nav-cta .btn{display:none}
  .section{padding:70px 0}
  .fact{flex-direction:column;gap:3px}
  .fact-v{text-align:left}
}