:root{
  --bg:#0a0e16;
  --bg-soft:#131c2e;
  --card:#111927;
  --card-hover:#16202f;
  --border:#1f2c42;
  --border-strong:#33415e;
  --text:#eef2f8;
  --muted:#93a1b8;
  --accent:#22d3ee;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,sans-serif;line-height:1.6;overflow-x:hidden}
h1,h2,h3{font-family:'Space Grotesk',sans-serif;line-height:1.15}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{max-width:1440px;margin:0 auto;padding:0 48px}
/* language toggle */
[data-lang="pt"] .en{display:none!important}
[data-lang="en"] .pt{display:none!important}
/* ambient glow */
.glow{position:fixed;border-radius:50%;filter:blur(150px);opacity:.12;pointer-events:none;z-index:0}
.glow.g1{width:560px;height:560px;background:#22d3ee;top:-180px;right:-140px}
.glow.g2{width:520px;height:520px;background:#818cf8;bottom:-200px;left:-160px}
/* nav */
nav{position:fixed;top:0;left:0;right:0;z-index:50;backdrop-filter:blur(14px);background:rgba(10,14,22,.8);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.18rem}
.logo em{font-style:normal;color:var(--accent)}
.nav-links{display:flex;gap:30px;align-items:center;font-size:.93rem;color:var(--muted)}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text);font-weight:600}
.lang-switch{display:flex;border:1px solid var(--border);border-radius:999px;overflow:hidden;font-size:.78rem;font-weight:600}
.lang-switch button{background:none;border:none;color:var(--muted);padding:6px 13px;cursor:pointer;font-family:inherit;font-weight:600}
.lang-switch button.active{background:var(--text);color:var(--bg)}
.menu-btn{display:none;background:none;border:1px solid var(--border);border-radius:8px;color:var(--text);padding:6px 10px;font-size:1.05rem;cursor:pointer}
/* page head (inner pages) */
.page-head{position:relative;z-index:1;padding:150px 0 10px;text-align:center}
.page-head h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:10px}
.page-head p{color:var(--muted)}
/* hero (home) */
.hero{position:relative;z-index:1;padding:160px 0 80px;display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:20px}
.kicker::before{content:"";width:28px;height:2px;background:var(--accent)}
.hero h1{font-size:clamp(2.4rem,4.6vw,3.8rem);margin-bottom:14px}
.hero h2{font-size:clamp(1.1rem,2vw,1.4rem);color:var(--text);font-weight:700;margin-bottom:22px}
.hero p{color:var(--muted);max-width:62ch;margin-bottom:32px}
.cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:10px;font-weight:600;font-size:.95rem;transition:.2s;cursor:pointer;border:none;font-family:inherit}
.btn-primary{background:var(--text);color:var(--bg)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(238,242,248,.15)}
.btn-ghost{border:1px solid var(--border);color:var(--text);background:none}
.btn-ghost:hover{border-color:var(--text)}
.socials{display:flex;gap:14px}
.socials a{width:44px;height:44px;border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted);transition:.2s}
.socials a:hover{color:var(--text);border-color:var(--text);transform:translateY(-2px)}
.socials svg{width:19px;height:19px;fill:currentColor}
/* avatar */
.avatar-wrap{display:flex;justify-content:center}
.avatar{width:min(340px,72vw);aspect-ratio:1;border-radius:50%;padding:4px;background:linear-gradient(140deg,var(--border),var(--border-strong));position:relative}
.avatar-inner{width:100%;height:100%;border-radius:50%;background:var(--card);display:flex;align-items:center;justify-content:center;font-family:'Space Grotesk',sans-serif;font-size:4.5rem;font-weight:700;color:var(--muted);overflow:hidden}
.avatar-inner img{width:100%;height:100%;object-fit:cover;border-radius:50%}
/* sections */
section{position:relative;z-index:1;padding:90px 0}
.band{background:rgba(19,28,46,.55);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.sec-head{text-align:center;margin-bottom:52px}
.sec-head h2{font-size:clamp(1.8rem,3.4vw,2.5rem);margin-bottom:10px}
.sec-head p{color:var(--muted)}
/* projects */
.projects-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.project{background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.project:hover{background:var(--card-hover);border-color:var(--border-strong);transform:translateY(-5px)}
.p-img{aspect-ratio:16/10;background:linear-gradient(150deg,#131c2e,#0d1320);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.p-img::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(147,161,184,.14) 1px,transparent 1px);background-size:22px 22px}
.p-img span{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.05rem;color:#42506b;letter-spacing:.04em;position:relative;text-align:center;padding:0 20px}
.p-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.p-body{padding:24px;display:flex;flex-direction:column;gap:13px;flex:1}
.project h3{font-size:1.14rem}
.project .desc{color:var(--muted);font-size:.92rem;flex:1}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:.74rem;font-weight:500;color:var(--muted);background:rgba(147,161,184,.07);border:1px solid var(--border);padding:4px 11px;border-radius:999px}
.p-link{font-size:.88rem;font-weight:600;color:var(--text);display:inline-flex;align-items:center;gap:6px}
.project:hover .p-link{gap:10px}
.p-link::after{content:"→";transition:.2s}
.view-all{display:flex;justify-content:center;margin-top:36px;position:relative;z-index:1}
/* filters */
.filters{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:34px 0 44px}
.filter-btn{font-size:.82rem;font-weight:600;color:var(--muted);background:var(--card);border:1px solid var(--border);padding:7px 16px;border-radius:999px;cursor:pointer;font-family:inherit;transition:.2s}
.filter-btn:hover{color:var(--text);border-color:var(--border-strong)}
.filter-btn.active{background:var(--text);color:var(--bg);border-color:var(--text)}
/* project detail */
.detail{position:relative;z-index:1;max-width:900px;margin:0 auto;padding:150px 24px 90px}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:.9rem;font-weight:600;margin-bottom:30px;transition:.2s}
.back-link:hover{color:var(--text)}
.detail h1{font-size:clamp(1.8rem,3.6vw,2.6rem);margin-bottom:16px}
.detail .chips{margin-bottom:28px}
.detail .p-img{border:1px solid var(--border);border-radius:16px;aspect-ratio:21/9;margin-bottom:40px}
.detail .p-img:has(img){aspect-ratio:auto}
.detail .p-img:has(img) span{display:none}
.detail .p-img img{position:static;width:100%;height:auto;object-fit:contain}
.detail h2{font-size:1.35rem;margin:36px 0 14px}
.detail p{color:var(--muted)}
.detail ul{list-style:none;display:flex;flex-direction:column;gap:11px;color:var(--muted);font-size:.96rem}
.detail ul li{padding-left:24px;position:relative}
.detail ul li::before{content:"→";position:absolute;left:0;color:var(--text)}
.detail-nav{display:flex;justify-content:space-between;gap:14px;margin-top:56px;flex-wrap:wrap}
/* experience */
.timeline{position:relative;z-index:1;max-width:880px;margin:0 auto;position:relative;padding-left:36px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--border)}
.t-item{position:relative;margin-bottom:52px}
.t-item::before{content:"";position:absolute;left:-34px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--bg);border:3px solid var(--text)}
.t-item .period{font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.t-item h3{font-size:1.3rem;margin:6px 0 2px}
.t-item .org{color:var(--muted);font-size:.92rem;margin-bottom:10px}
.t-item .role-desc{color:var(--muted);font-size:.95rem;margin-bottom:14px}
.t-item h4{font-size:.82rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text);margin-bottom:10px}
.t-item ul{list-style:none;display:flex;flex-direction:column;gap:9px;font-size:.93rem;color:var(--muted)}
.t-item ul li{padding-left:22px;position:relative}
.t-item ul li::before{content:"→";position:absolute;left:0;color:var(--text)}
/* about */
.about-block{position:relative;z-index:1;max-width:880px;margin:0 auto 56px}
.about-block h2{font-size:1.5rem;margin-bottom:18px}
.about-block p{color:var(--muted);margin-bottom:16px}
.about-block ul{list-style:none;display:flex;flex-direction:column;gap:11px;color:var(--muted)}
.about-block ul li{padding-left:24px;position:relative}
.about-block ul li::before{content:"→";position:absolute;left:0;color:var(--text)}
.edu-item{border-left:2px solid var(--border);padding:4px 0 4px 22px;margin-bottom:22px}
.edu-item h3{font-size:1.08rem}
.edu-item .org{color:var(--muted);font-size:.92rem}
.edu-item .meta{color:var(--muted);font-size:.82rem}
/* skills tabs */
.tabs-wrap{position:relative;z-index:1;display:flex;justify-content:center;margin-bottom:44px}
.tabs{display:inline-flex;background:var(--card);border:1px solid var(--border);border-radius:999px;padding:6px;gap:4px;flex-wrap:wrap;justify-content:center}
.tab-btn{background:none;border:none;border-radius:999px;padding:10px 24px;color:var(--muted);font-family:inherit;font-size:.95rem;font-weight:600;cursor:pointer;transition:.2s}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{background:#1c2740;color:var(--text)}
.tab-panel{position:relative;z-index:1;display:none;background:var(--card);border:1px solid var(--border);border-radius:18px;padding:36px;flex-wrap:wrap;justify-content:center;gap:16px}
.tab-panel.active{display:flex}
.tool{display:inline-flex;align-items:center;gap:11px;background:var(--bg-soft);border:1px solid var(--border);border-radius:12px;padding:13px 22px;font-weight:600;font-size:.95rem;transition:.2s}
.tool:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.tool img,.tool svg{width:22px;height:22px;object-fit:contain;flex-shrink:0}
/* skills */
.skills-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.skill-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:28px;transition:.25s}
.skill-card:hover{border-color:var(--border-strong);transform:translateY(-4px)}
.skill-card h3{font-size:1.06rem;margin-bottom:18px}
/* contact */
.contact-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:24px;max-width:1080px;margin:0 auto}
.contact-card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:36px}
.contact-card h2{font-size:1.35rem;margin-bottom:8px}
.contact-card>p{color:var(--muted);font-size:.93rem;margin-bottom:24px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:.85rem;font-weight:600;margin-bottom:7px}
.form-group input,.form-group textarea{width:100%;background:var(--bg-soft);border:1px solid var(--border);border-radius:10px;padding:12px 14px;color:var(--text);font-family:inherit;font-size:.92rem;outline:none;transition:.2s}
.form-group input:focus,.form-group textarea:focus{border-color:var(--text)}
.form-group textarea{min-height:130px;resize:vertical}
.channel{display:flex;align-items:center;gap:14px;border:1px solid var(--border);border-radius:12px;padding:16px 18px;margin-bottom:14px;transition:.2s}
.channel:hover{border-color:var(--text)}
.channel svg{width:20px;height:20px;fill:var(--muted);flex-shrink:0}
.channel b{display:block;font-size:.92rem}
.channel span{font-size:.83rem;color:var(--muted);word-break:break-all}
/* footer */
footer{position:relative;z-index:1;border-top:1px solid var(--border);padding:56px 0 30px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px}
.footer-grid h3{font-size:1.02rem;margin-bottom:14px}
.footer-grid p{color:var(--muted);font-size:.9rem;max-width:40ch}
.footer-grid ul{list-style:none;display:flex;flex-direction:column;gap:9px;font-size:.9rem;color:var(--muted)}
.footer-grid ul a:hover{color:var(--text)}
.footer-bottom{border-top:1px solid var(--border);padding-top:22px;text-align:center;color:var(--muted);font-size:.84rem}
/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
/* responsive */
@media(max-width:1100px){
  .projects-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .container{padding:0 24px}
  .hero{grid-template-columns:1fr;padding-top:130px;text-align:center}
  .hero p{margin-left:auto;margin-right:auto}
  .cta,.socials{justify-content:center}
  .avatar-wrap{order:-1}
  .projects-grid,.skills-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg-soft);border-bottom:1px solid var(--border);flex-direction:column;padding:18px;gap:16px}
  .nav-links.open{display:flex}
  .menu-btn{display:block}
}