:root{
  --bg: #0b0d10;
  --bg-alt: #101317;
  --surface: #15181d;
  --surface-2: #1b1f26;
  --border: #262b33;
  --text: #f3f1ea;
  --text-dim: #a7aeb8;
  --text-dimmer: #6b7280;
  --accent: #4ade80;
  --accent-dim: #2f6b4c;
  --accent-soft: rgba(74,222,128,0.12);
  --amber: #e8a33d;
  --radius: 14px;
  --maxw: 1080px;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, Helvetica, Arial, sans-serif;
}
*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0; background: var(--bg); color: var(--text);
  font-family: var(--sans); line-height: 1.6; font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
.lang-en{ display:none !important; }
html.en .lang-pt{ display:none !important; }
html.en .lang-en{ display:revert !important; }

a{ color: inherit; }
.wrap{ max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
img{ max-width:100%; display:block; }

/* ---------- HEADER ---------- */
header.site{
  position: sticky; top:0; z-index: 50;
  background: rgba(11,13,16,0.88); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav{ display:flex; align-items:center; justify-content: space-between; padding: 16px 0; }
.nav .brand{ font-weight: 700; letter-spacing: 0.02em; font-size: 15px; text-decoration:none; }
.nav .brand span{ color: var(--accent); }
.nav-links{ display:flex; align-items:center; gap: 26px; }
.nav-links a{ text-decoration:none; color: var(--text-dim); font-size: 14px; transition: color .15s; }
.nav-links a:hover, .nav-links a.current{ color: var(--text); }
.nav-right{ display:flex; align-items:center; gap:16px; }
.lang-toggle{
  display:flex; border:1px solid var(--border); border-radius: 999px; padding: 3px; gap:2px; background: var(--surface);
}
.lang-toggle button{
  border:none; background: transparent; color: var(--text-dimmer); font-size: 12px; font-weight:600;
  padding: 5px 12px; border-radius: 999px; cursor:pointer; letter-spacing: .04em; font-family: var(--sans);
}
.lang-toggle button.active{ background: var(--accent); color: #06210f; }
.nav-burger{ display:none; background:none; border:1px solid var(--border); border-radius:8px; width:38px; height:38px; align-items:center; justify-content:center; cursor:pointer; color:var(--text); }
.nav-burger span, .nav-burger span::before, .nav-burger span::after{ content:''; display:block; width:16px; height:2px; background: var(--text); position:relative; }
.nav-burger span::before{ position:absolute; top:-5px; }
.nav-burger span::after{ position:absolute; top:5px; }
.mobile-menu{ display:none; flex-direction:column; gap:2px; padding: 6px 0 18px; border-top:1px solid var(--border); }
.mobile-menu a{ text-decoration:none; color:var(--text-dim); font-size:15px; padding:12px 0; border-bottom:1px solid var(--border); }
.mobile-menu.open{ display:flex; }

/* ---------- HERO ---------- */
.hero{ padding: 96px 0 72px; border-bottom: 1px solid var(--border); }
.eyebrow{ color: var(--accent); font-size: 13px; font-weight:700; letter-spacing:.14em; text-transform: uppercase; margin: 0 0 18px; }
.hero h1{ font-family: var(--serif); font-weight:400; font-size: clamp(38px, 6vw, 64px); line-height: 1.08; margin: 0 0 22px; letter-spacing: -0.01em; }
.hero h1 em{ font-style: italic; color: var(--accent); }
.hero p.lede{ font-size: 19px; color: var(--text-dim); max-width: 660px; margin: 0 0 34px; }
.hero-cta{ display:flex; gap:14px; flex-wrap: wrap; }
.btn{
  display:inline-flex; align-items:center; gap:8px; text-decoration:none; font-size:14px; font-weight:600;
  padding: 13px 22px; border-radius: 999px; transition: all .15s; border: 1px solid transparent; cursor:pointer;
  font-family: var(--sans);
}
.btn-primary{ background: var(--accent); color:#06210f; }
.btn-primary:hover{ background:#66e39c; }
.btn-ghost{ border-color: var(--border); color: var(--text); }
.btn-ghost:hover{ border-color:#3a4149; }

.stats{ display:flex; gap:48px; margin-top: 64px; flex-wrap: wrap; }
.stat b{ display:block; font-family: var(--serif); font-size: 34px; font-weight:400; color: var(--accent); }
.stat span{ font-size: 13px; color: var(--text-dimmer); }

/* ---------- SECTION TITLES ---------- */
.section{ padding: 88px 0; border-bottom: 1px solid var(--border); }
.section-head{ margin-bottom: 48px; }
.section-head .eyebrow{ margin-bottom: 12px; }
.section-head h2{ font-family: var(--serif); font-weight:400; font-size: clamp(28px,4vw,42px); margin:0; }
.section-head p{ color: var(--text-dim); max-width: 640px; margin-top:14px; font-size:16px; }

/* ---------- ABOUT ---------- */
.about-grid{ display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; }
.about-grid p{ color: var(--text-dim); margin: 0 0 18px; font-size: 16px; }
.about-grid p strong{ color: var(--text); }
.tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top: 10px; }
.tag{ font-size:12.5px; padding: 6px 12px; border-radius: 999px; border:1px solid var(--border); color: var(--text-dim); background: var(--surface); }
.side-card{ background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); padding: 26px; margin-bottom: 20px; }
.side-card h4{ margin:0 0 14px; font-size: 12.5px; text-transform: uppercase; letter-spacing: .1em; color: var(--text-dimmer); }
.timeline-item{ padding: 14px 0; border-bottom: 1px solid var(--border); }
.timeline-item:last-child{ border-bottom:none; padding-bottom:0; }
.timeline-item .role{ font-weight:600; font-size:14.5px; }
.timeline-item .org{ color: var(--accent); font-size: 13px; margin: 2px 0; }
.timeline-item .period{ color: var(--text-dimmer); font-size: 12px; }
.edu-item{ padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 13.5px; }
.edu-item:last-child{ border:none; }
.edu-item b{ display:block; font-size:14px; }
.edu-item span{ color: var(--text-dimmer); font-size:12.5px; }

/* ---------- CASE STUDIES LIST (index cards) ---------- */
.case-card{
  display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; align-items:center;
  padding: 34px; border:1px solid var(--border); border-radius: var(--radius); background: var(--surface);
  text-decoration:none; color: inherit; margin-bottom: 22px; transition: border-color .15s, transform .15s;
}
.case-card:hover{ border-color: var(--accent-dim); transform: translateY(-2px); }
.case-card .thumb{ border-radius: 10px; overflow:hidden; border:1px solid var(--border); background:#0e1013; aspect-ratio: 16/10; display:flex; align-items:center; justify-content:center; }
.case-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.case-card .tagline{ color: var(--text-dimmer); font-size:12px; text-transform:uppercase; letter-spacing:.1em; margin-bottom:10px; }
.case-card h3{ font-family: var(--serif); font-weight:400; font-size: 26px; margin: 0 0 12px; }
.case-card p{ color: var(--text-dim); font-size:14.5px; margin:0 0 16px; }
.case-card .arrow{ color: var(--accent); font-size: 13.5px; font-weight:600; }

/* ---------- CASE STUDY DETAIL ---------- */
.case{ padding: 100px 0 60px; }
.case-hero{ margin-bottom: 56px; }
.case-meta{ display:flex; flex-wrap:wrap; gap: 28px; margin: 30px 0 0; padding-top: 26px; border-top: 1px solid var(--border); }
.case-meta div span{ display:block; font-size:11px; text-transform:uppercase; letter-spacing:.1em; color: var(--text-dimmer); margin-bottom:6px; }
.case-meta div b{ font-size: 14px; font-weight:600; }
.case h2.title{ font-family: var(--serif); font-weight:400; font-size: clamp(32px,5vw,52px); margin: 0 0 16px; line-height:1.08; }
.case .role-eyebrow{ color: var(--accent); font-size:13px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; margin:0 0 20px; }
.case .intro{ font-size:18px; color: var(--text-dim); max-width: 720px; }

.case-block{ margin: 56px 0; }
.case-block h3{ font-family: var(--serif); font-weight:400; font-size: 24px; margin: 0 0 16px; display:flex; align-items:center; gap:12px; }
.case-block h3 .num{ color: var(--accent); font-size:14px; font-family: var(--sans); font-weight:700; border:1px solid var(--accent-dim); border-radius:999px; width:26px; height:26px; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.case-block p{ color: var(--text-dim); font-size:15.5px; max-width: 740px; margin: 0 0 14px; }
.case-block p strong{ color: var(--text); font-weight:600; }
.case-block h4.sub{ font-family: var(--sans); font-size: 15.5px; font-weight:700; color: var(--text); margin: 34px 0 10px; }
.quote{ font-family: var(--serif); font-style: italic; font-size: 21px; color: var(--text); border-left: 2px solid var(--accent); padding-left: 22px; margin: 30px 0; max-width: 680px; line-height:1.5; }

.gallery{ display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 20px; margin-top: 26px; }
.gallery figure{ margin:0; }
.shot{ border-radius: 10px; overflow:hidden; border:1px solid var(--border); background: #fff; max-height: 560px; display:flex; align-items:flex-start; justify-content:center; }
.shot img{ width:100%; height:auto; max-height: 560px; object-fit: contain; display:block; }
.browser-chrome{ background:#e7e5e0; padding:8px 10px; display:flex; gap:5px; align-items:center; }
.browser-chrome span{ width:8px; height:8px; border-radius:50%; background:#c8c6c0; display:inline-block; }
figcaption{ font-size:12px; color: var(--text-dimmer); margin-top:10px; }
.gallery.mobile{ grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); }
.gallery.mobile .shot{ max-width: 230px; margin:0 auto; }
.gallery.three .shot{ max-width: 240px; margin:0 auto; }
.gallery.pair{ grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); }

.two-col{ display:grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.decision-list{ margin: 0; padding:0; list-style:none; }
.decision-list li{ display:flex; gap:14px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.decision-list li:last-child{ border-bottom:none; }
.decision-list .dot{ width:6px; height:6px; border-radius:50%; background: var(--accent); margin-top:8px; flex-shrink:0; }
.decision-list p{ margin:0; font-size:14.5px; color: var(--text-dim); }

.closing{ background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); padding: 34px 38px; margin-top: 50px; }
.closing p{ margin:0; font-size:16px; color: var(--text); font-family: var(--serif); font-style: italic; line-height:1.6; }

.caveat{ font-size:12.5px; color: var(--text-dimmer); border-top:1px solid var(--border); margin-top:56px; padding-top:20px; max-width: 720px; }

/* ---------- NEXT CASE LINK ---------- */
.next-case{
  display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap;
  margin: 70px 0 0; padding: 34px; border:1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); text-decoration:none; color:inherit; transition: border-color .15s, transform .15s;
}
.next-case:hover{ border-color: var(--accent-dim); transform: translateY(-2px); }
.next-case .nc-label{ color: var(--text-dimmer); font-size:11px; text-transform:uppercase; letter-spacing:.1em; margin-bottom:8px; }
.next-case .nc-title{ font-family: var(--serif); font-size:24px; }
.next-case .nc-arrow{ color: var(--accent); font-size:22px; }

/* ---------- CONTACT / FOOTER ---------- */
footer.site{ padding: 90px 0 60px; border-top: 1px solid var(--border); margin-top: 40px; }
footer.site h2{ font-family: var(--serif); font-weight:400; font-size: clamp(30px,5vw,46px); margin:0 0 20px; }
footer.site p.lede{ color: var(--text-dim); font-size:17px; max-width:560px; margin-bottom:36px; }
.contact-row{ display:flex; flex-wrap:wrap; gap:16px; margin-bottom: 60px; }
.contact-pill{ display:flex; align-items:center; gap:10px; border:1px solid var(--border); border-radius:999px; padding:12px 20px; text-decoration:none; color:var(--text); font-size:14px; background: var(--surface); }
.contact-pill:hover{ border-color: var(--accent-dim); }
.foot-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; border-top:1px solid var(--border); padding-top:28px; color: var(--text-dimmer); font-size:12.5px; }

@media (max-width: 860px){
  .about-grid{ grid-template-columns: 1fr; gap: 40px; }
  .case-card{ grid-template-columns: 1fr; }
  .two-col{ grid-template-columns: 1fr; }
  .nav-links{ display:none; }
  .nav-burger{ display:flex; }
  .next-case{ flex-direction:column; align-items:flex-start; }
}