/* ============================================================
   UXConf BR · Arquivo de edições anteriores
   Estética NEUTRA / editorial, independente do site 2026.
   Paper + tinta + serifa para títulos + hairlines.
   ============================================================ */
:root{
  --paper:#FFFFFF; --paper-2:#F1F2F4; --card:#FFFFFF;
  --ink:#1A1C20; --soft:#5B6066; --faint:#6B7177;
  --line:rgba(26,28,32,.16); --line-2:rgba(26,28,32,.08);
  --accent:#226FB5; --accent-dk:#1B5A95; --footer:#15334C;
  --sans:"proxima-nova","Proxima Nova","Helvetica Neue",Helvetica,Arial,sans-serif;
  --serif:"proxima-nova","Proxima Nova","Helvetica Neue",Helvetica,Arial,sans-serif;
  --maxw:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
/* foco visível sobre superfícies escuras (rodapé, hero) */
footer.site :focus-visible,.hero :focus-visible{outline-color:#fff}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.08;margin:0;letter-spacing:-.02em}
section{padding:84px 0;position:relative}
.bg-cream2{background:var(--paper-2)}
.skip-link{position:fixed;top:-70px;left:12px;z-index:200;background:var(--ink);color:var(--paper);
  font-family:var(--sans);font-weight:600;font-size:14px;padding:11px 16px;border-radius:4px;transition:top .2s ease}
.skip-link:focus{top:12px}

/* eyebrow / rótulos */
.eyebrow,.sp-eyebrow,.lab,.day-header span,.period-label,.foot-col h5,.spon-tier .lab,.tag,.hero-meta{
  font-family:var(--sans);text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:600;color:var(--soft)}
.eyebrow{display:inline-flex;align-items:center;gap:9px}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--accent)}

/* ---------- buttons ---------- */
.btn{font-family:var(--sans);font-weight:600;font-size:16px;letter-spacing:.02em;border-radius:0;
  padding:13px 22px;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;
  transition:.2s;border:1px solid var(--ink);background:none;color:var(--ink)}
.btn:hover,.btn:focus-visible{background:var(--accent);color:#fff;border-color:var(--accent);transform:scale(1.04)}
@media(prefers-reduced-motion:reduce){.btn:hover,.btn:focus-visible{transform:none}}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-dk);color:#fff;border-color:var(--accent-dk)}
.btn-ghost{border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent)}
.btn-lg{padding:16px 28px;font-size:17px}

/* ---------- nav ---------- */
header.nav{position:sticky;top:0;z-index:60;background:rgba(235,237,240,.86);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:16px 32px;display:flex;align-items:center;gap:26px}
.brand{font-family:var(--serif);font-weight:600;font-size:21px;letter-spacing:-.01em;color:var(--ink);display:inline-flex;white-space:nowrap}
.brand.has-frame{position:relative;padding:3px 18px;line-height:1.15}
.brand.has-frame>span{position:relative;z-index:1}
.brand-frame{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none;color:rgba(26,28,32,.34)}
.brand-frame path{fill:none;stroke:currentColor;stroke-width:1.5}
.foot-brand .brand-frame{color:rgba(255,255,255,.34)}
.brand .bl-sp{display:inline-block;width:.28em}
.br-lt{color:var(--soft);font-weight:400}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-list{display:flex;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.nav-list>li{display:block}
.nav-links a:not(.nav-cta){font-family:var(--sans);font-size:18px;font-weight:500;color:var(--soft);
  padding:8px 12px;position:relative;transition:color .2s}
.nav-links a:not(.nav-cta):hover,.nav-links a.active{color:var(--accent-dk)}
.nav-links a.active{font-weight:600}
.nav-links a:not(.nav-cta)::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav-links a:not(.nav-cta):hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{margin-left:10px;padding:10px 16px;white-space:nowrap}
.nav-burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--ink);border-radius:4px;
  background:none;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-burger span{width:18px;height:1.5px;background:var(--ink);transition:.25s}
.nav-burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
@media(max-width:820px){
  .nav-links{position:fixed;inset:62px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);padding:6px 0;transform:translateY(-130%);
    transition:transform .3s ease;box-shadow:0 24px 40px -28px rgba(0,0,0,.4)}
  .nav-links.show{transform:none}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav-links a:not(.nav-cta){padding:15px 32px;border-bottom:1px solid var(--line-2)}
  .nav-links a:not(.nav-cta)::after{display:none}
  .nav-cta{margin:14px 32px}
  .nav-burger{display:flex}
}

/* ---------- hero (home) com foto + parallax ---------- */
.hero{position:relative;overflow:hidden;display:flex;align-items:center;min-height:78vh;padding:140px 0 92px}
.hero-bg{position:absolute;left:0;right:0;top:-50%;height:200%;z-index:0;will-change:transform;
  background:linear-gradient(180deg,rgba(14,24,38,.5),rgba(14,24,38,.66)),url(hero.webp) center/cover no-repeat}
.hero .wrap{position:relative;z-index:1}
.hero-meta{display:block;margin-bottom:26px;color:rgba(255,255,255,.9)}
.h1{font-family:var(--serif);font-size:clamp(46px,8vw,104px);line-height:.98;letter-spacing:-.025em;
  font-weight:900;max-width:16ch;color:#fff}
.hero-sub{display:flex;gap:40px;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;margin-top:38px}
.hero-lead{max-width:48ch;font-size:19px;color:rgba(255,255,255,.92);font-weight:400}
.hero-lead b{font-weight:400}
.hero-lead b{color:var(--ink);font-weight:600}
.hero .hero-lead,.hero .hero-lead b{color:#fff}
.hero .btn-ghost{border-color:rgba(255,255,255,.6);color:#fff}
.hero .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
@media(prefers-reduced-motion:reduce){.hero-bg{top:0;height:100%}}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- page hero (subpáginas) ---------- */
.page-hero{padding:72px 0 28px}
.page-hero h1{font-size:clamp(38px,6vw,76px);letter-spacing:-.025em;margin:0 0 12px;max-width:18ch}
.page-hero p,.disclaimer{font-size:15px;color:var(--soft);max-width:64ch}
.disclaimer{font-family:var(--sans)}
.section-flush{padding-top:34px}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:48px;
  flex-wrap:wrap;padding-bottom:22px;border-bottom:1px solid var(--line)}
.sec-head h2{font-size:clamp(30px,4.4vw,52px);letter-spacing:-.02em}
.sec-head .eyebrow{margin-bottom:14px}
.about-p{max-width:42ch;color:var(--soft);font-size:16px}
.cta-jump{display:flex;justify-content:center;margin-top:64px}

/* ---------- speakers grid ---------- */
.spk-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:42px 28px;list-style:none;padding:0;margin:0}
.spk-link{display:block}
.spk{text-align:center}
.spk .ph{width:100%;aspect-ratio:1/1;overflow:hidden;background:var(--paper-2);position:relative;border:1px solid var(--line-2)}
.spk .ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.spk:hover .ph img{transform:scale(1.04)}
.spk .ph.img-fail{display:flex;align-items:center;justify-content:center;background:var(--ink)}
.spk .ph.img-fail::before{content:attr(data-initials);font-family:var(--serif);font-size:34px;color:var(--paper)}
.spk .nm{font-family:var(--serif);font-weight:600;font-size:19px;letter-spacing:-.01em;margin-top:14px;
  display:block}
@media(max-width:900px){.spk-grid{grid-template-columns:repeat(3,1fr);gap:32px 22px}}
@media(max-width:560px){.spk-grid{grid-template-columns:repeat(2,1fr);gap:26px 18px}}

/* ---------- local ---------- */
.local-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.local-card{border:1px solid var(--line);padding:40px;display:flex;flex-direction:column;
  justify-content:space-between;gap:30px;background:var(--card)}
.local-card h3{font-size:30px;margin-bottom:14px}
.local-card p{color:var(--soft);font-size:16px}
.addr .lab{display:block;margin-bottom:6px}
.addr address{font-style:normal;font-size:16px;margin:0 0 16px}
.map{border:1px solid var(--line);overflow:hidden;height:100%;min-height:340px}
.map iframe{width:100%;height:100%;border:0;display:block;filter:grayscale(1) contrast(1.05)}
@media(max-width:820px){.local-grid{grid-template-columns:1fr}.map{min-height:300px}}

/* ---------- sponsors ---------- */
.spon-tier{margin-bottom:34px}
.spon-tier .lab{margin-bottom:16px;display:flex;align-items:center;gap:14px}
.spon-tier .lab::after{content:"";flex:1;height:1px;background:var(--line)}
.spon-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.spon{border:1px solid var(--line);padding:28px 24px;display:flex;align-items:center;justify-content:center;
  min-height:104px;transition:.2s;background:var(--card)}
.spon:hover{background:var(--accent);border-color:var(--accent)}
.spon .sn{font-family:var(--serif);font-weight:600;font-size:20px;transition:color .2s}
.spon:hover .sn{color:var(--paper)}

/* ---------- schedule ---------- */
#schedule{margin-top:4px}
.day-block + .day-block{margin-top:56px}
.day-header{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;padding:14px 0;
  position:sticky;top:62px;z-index:40;background:var(--paper);border-bottom:2px solid var(--accent)}
.day-header h2{font-size:clamp(24px,3.4vw,38px);letter-spacing:-.02em}
.period-label{margin:36px 0 4px}
.slot{display:grid;grid-template-columns:108px 1fr;gap:24px;padding:20px 4px;border-top:1px solid var(--line-2);align-items:start}
.slot:first-of-type{border-top:0}
.slot .tm{font-family:var(--sans);font-weight:600;font-size:18px;color:var(--ink);padding-top:4px}
.slot .tm .dur{display:block;font-size:12px;font-weight:400;color:var(--faint);margin-top:4px;letter-spacing:0}
.slot .ct{display:flex;gap:18px;align-items:center;color:inherit}
.slot a.ct{transition:opacity .2s}
.slot a.ct:hover{opacity:.62}
.slot .av{width:72px;height:72px;border-radius:50%;overflow:hidden;flex:none;border:1px solid var(--line);background:var(--paper-2)}
.slot .av img{width:100%;height:100%;object-fit:cover}
.slot .tt{display:block;font-family:var(--serif);font-weight:600;font-size:20px;letter-spacing:-.01em;line-height:1.2}
.slot .sp{display:block;font-family:var(--sans);font-size:14px;color:var(--soft);margin-top:5px}
.slot.break .ct{align-items:center}
.slot.break .tt,.slot.break span:first-child{font-family:var(--sans);font-size:15px;color:var(--soft)}
.slot.break .tag{margin-left:auto;border:1px solid var(--line);padding:5px 12px;color:var(--soft)}
.slot-debate .av-cluster{display:inline-flex;align-items:center;flex:none}
.slot-debate .av{width:64px;height:64px;box-shadow:0 0 0 3px var(--paper)}
.slot-debate .av+.av{margin-left:-20px}
@media(max-width:600px){.slot{grid-template-columns:74px 1fr;gap:14px}.slot .av{display:none}}

/* ---------- speaker detail ---------- */
.sp-back{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-weight:600;font-size:14px;
  color:var(--soft);margin-bottom:30px;transition:color .2s}
.sp-back:hover{color:var(--ink)}
.sp-hero{display:grid;grid-template-columns:340px 1fr;gap:54px;align-items:center}
.sp-photo{width:340px;max-width:100%;aspect-ratio:1/1;overflow:hidden;border:1px solid var(--line);background:var(--paper-2)}
.sp-photo img{width:100%;height:100%;object-fit:cover}
.sp-hero h1{font-size:clamp(36px,5.2vw,68px);letter-spacing:-.025em;margin:8px 0 12px}
.sp-eyebrow{display:block;margin-bottom:2px}
.sp-role{font-family:var(--sans);font-size:16px;color:var(--soft);max-width:42ch;margin:0}
.sp-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
#spBody{padding-top:56px}
.sp-talk-title{font-size:clamp(26px,3.6vw,44px);letter-spacing:-.02em;margin:12px 0 24px;max-width:22ch}
.sp-desc{font-size:18px;color:var(--soft);line-height:1.8;max-width:62ch}
.sp-desc p{margin:0 0 18px}
.sp-bio{border-top:1px solid var(--line);padding-top:30px;max-width:62ch}
.sp-bio h3{font-size:24px;margin-bottom:14px}
.sp-bio p{font-size:16px;color:var(--soft);line-height:1.75;margin:0}
@media(max-width:760px){.sp-hero{grid-template-columns:1fr;gap:26px}.sp-photo{width:240px}}

/* mesa redonda / painel */
.deb-photos{display:flex;align-items:center}
.deb-photos .av{width:112px;height:112px;border-radius:50%;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 0 0 4px var(--paper);background:var(--paper-2)}
.deb-photos .av+.av{margin-left:-28px}
.deb-photos .av img{width:100%;height:100%;object-fit:cover}
.deb-bios{max-width:760px;margin-top:8px}
.deb-bios-h{font-size:clamp(22px,3vw,32px);letter-spacing:-.02em;margin:0 0 24px}
.deb-bio{padding:26px 0;border-top:1px solid var(--line)}
.deb-bio:first-of-type{border-top:0;padding-top:0}
.deb-bio h4{font-family:var(--serif);font-weight:600;font-size:21px;margin:0 0 4px}
.deb-bio-role{font-family:var(--sans);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.12em;color:var(--accent-dk);margin:0 0 12px}
.deb-bio p{font-size:16px;color:var(--soft);line-height:1.7;margin:0 0 12px}
.deb-bio-link{font-family:var(--sans);font-weight:600;font-size:13px;color:var(--accent-dk);border-bottom:1px solid var(--accent)}

/* ---------- footer ---------- */
footer.site{background:var(--footer);color:var(--paper);padding:72px 0 34px;margin-top:40px}
.foot-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:44px;
  border-bottom:1px solid rgba(243,241,236,.16)}
.foot-brand .brand{color:var(--paper);margin-bottom:14px}
.foot-brand .brand.has-frame{display:inline-flex!important;width:-moz-fit-content;width:fit-content}
.foot-brand .br-lt{color:rgba(243,241,236,.55)}
.foot-brand p{color:rgba(243,241,236,.6);font-size:14px;max-width:32ch;margin:0}
.libras-foot{display:flex;align-items:center;gap:12px;margin-top:20px;font-size:13px;color:rgba(243,241,236,.7)}
.libras-foot .ic{width:32px;height:32px;border:1px solid rgba(243,241,236,.25);display:flex;align-items:center;justify-content:center}
.foot-col h5{color:rgba(243,241,236,.5);margin:0 0 15px}
.foot-list{list-style:none;margin:0;padding:0}
.foot-col a{display:block;color:rgba(243,241,236,.85);font-size:14.5px;padding:5px 0;transition:color .2s}
.foot-col a:hover{color:#fff}
.foot-select{width:100%;max-width:240px;color:var(--paper);border:1px solid rgba(243,241,236,.4);
  border-radius:6px;padding:12px 40px 12px 14px;font-family:var(--sans);font-size:14.5px;cursor:pointer;
  appearance:none;-webkit-appearance:none;transition:border-color .2s,background-color .2s;
  background:rgba(255,255,255,.07) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'><path d='M1 1l5 5 5-5' stroke='%23F1F2F4' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat right 14px center}
.foot-select:hover{border-color:rgba(243,241,236,.8);background-color:rgba(255,255,255,.12)}
.foot-select:focus-visible{outline:2px solid var(--paper);outline-offset:2px}
.foot-select option{color:var(--ink);background:var(--paper)}
.foot-bot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:28px;align-items:center;
  color:rgba(243,241,236,.55);font-size:13px}
.foot-id{font-style:normal}
.foot-id a{text-decoration:underline}
.foot-soc{display:flex;gap:8px;flex-wrap:wrap;list-style:none;margin:0;padding:0}
.foot-soc a{border:1px solid rgba(243,241,236,.32);padding:9px 14px;font-size:13px;color:var(--paper);transition:.2s}
.foot-soc a:hover{background:var(--paper);color:var(--ink)}
.foot-note{font-size:12.5px;color:rgba(243,241,236,.5);max-width:70ch;margin:22px 0 0}
@media(max-width:820px){.foot-cols{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:520px){.foot-cols{grid-template-columns:1fr}}

/* reveal: anima só o transform (opacity fica sempre 1), assim o conteúdo nunca
   fica invisível mesmo que a transição não "avance" (ex.: captura sem repaint). */
.reveal{opacity:1;transform:none}
@media(prefers-reduced-motion:no-preference){
  .reveal{transition:transform .7s cubic-bezier(.2,.7,.2,1)}
  .reveal:not(.in){transform:translateY(16px)}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}

/* print */
@media print{
  header.nav,footer.site,.skip-link,.map{display:none!important}
  body{background:#fff;color:#000}
  .day-header{position:static}
  .slot{break-inside:avoid}
}