/* ==========================================================================
   ESTECBA — Stylesheet completo
   Versão 2.0.0
   - Design fluido, acessível e responsivo
   - Header fixo + menu hamburguer
   - Seções com espaçamento padronizado (compacto)
   - Componentes usados no HTML fornecido
   ========================================================================== */

/* -------------------- Reset básico / utilidades -------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

:root {
  /* Paleta neutra */
  --ink: #0f1720;
  --ink-2: #1b2633;
  --ink-3: #324054;
  --fg: #101418;
  --muted: #6b7a8c;
  --line: #2c3644;

  /* Paleta clara */
  --bg: #f6f7fb;
  --card: #ffffff;

  /* Acentos */
  --primary: #f59e0b;        /* amber 500 */
  --primary-ink: #482e07;
  --primary-soft: #fff7e6;

  /* Shadows */
  --shadow: 0 8px 28px rgba(0,0,0,.18);

  /* Tamanhos */
  --container: 1100px;
  --radius: 16px;

  /* Transições */
  --t: 180ms cubic-bezier(.2,.65,.25,1);
}

/* Tema escuro por padrão (pode alternar no JS) */
html[data-theme="dark"] {
  --bg: #0b1220;
  --card: #0e1626;
  --ink: #eaf2ff;
  --ink-2: #dbe7ff;
  --ink-3: #b8c7e6;
  --fg: #eaf2ff;
  --muted: #93a1b6;
  --line: #243248;
  --primary: #f59e0b;
  --primary-ink: #3d2806;
  --primary-soft: #2b220f;
}

/* ===== Ajuste: texto das badges branco no modo escuro ===== */
html[data-theme="dark"] .badges li {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}


body {
  margin: 0;
  font: 400 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--fg);
  background: radial-gradient(1200px 800px at 20% -10%, rgba(245,158,11,.08), transparent 60%), var(--bg);
  text-rendering: optimizeLegibility;
}

/* Links */
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Containers */
.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

/* Tipografia */
h1, h2, h3 { line-height: 1.15; margin: 0 0 .35em; }
h1 { font-size: clamp(28px, 4vw, 44px); }
h2 { font-size: clamp(22px, 3.2vw, 32px); }
h3 { font-size: clamp(18px, 2.4vw, 22px); }

.lead { font-size: 1.06rem; color: var(--ink-3); margin: 6px 0 12px; }
.title { font-weight: 800; letter-spacing: .2px; }
.eyebrow { font: 700 .8rem/1 var(--font, inherit); color: var(--primary); text-transform: uppercase; letter-spacing: .12em; display: block; margin-bottom: 6px; }
.muted { color: var(--muted); }

/* Layouts */
.section     { padding: 44px 0; }
.section--xl { padding: 64px 0; }
.center      { text-align: center; }

.grid-2 {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
}
@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
}

/* -------------------- Header fixo -------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(1.1) blur(10px);
  background: linear-gradient(180deg, rgba(10,15,26,.65), rgba(10,15,26,.35) 70%, transparent);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.header-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
}

/* Marca */
.brand { display: inline-grid; grid-template-columns: 44px auto; gap: 10px; align-items: center; text-decoration: none; }
.brand__logo { border-radius: 10px; display: block; }
.brand__text { line-height: 1.05; white-space: nowrap; }
.brand__text strong { display: block; font-size: 1.1rem; letter-spacing: .4px; }
.brand__text small  { display: block; font-size: .78rem; color: var(--muted); max-width: 50ch; }

@media (max-width: 520px){
  .brand__text small { display: none; } /* evita sobreposição no mobile muito estreito */
}

/* Navegação */
.nav {
  display: flex;
  justify-self: end;
  align-items: center;
  gap: 12px;
}
.nav a {
  padding: 10px 12px;
  border-radius: 10px;
  text-decoration: none;
  transition: background var(--t), opacity var(--t);
  opacity: .9;
}
.nav a:hover { opacity: 1; background: rgba(255,255,255,.06); }

.icon-btn {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px;
  background: transparent;
  cursor: pointer;
}
.icon-btn .sun, .icon-btn .moon { pointer-events: none; }
.icon-btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

/* Botão hambúrguer */
.nav-toggle{
  display: none;
  justify-self: end;
  width: 44px; height: 38px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
}
.nav-toggle span{ display:block; height:2px; margin:7px 8px; background: var(--fg); }
@media (max-width: 900px){
  .nav-toggle{ display: inline-block; }
  .nav{
    position: absolute; top: 64px; right: 16px;
    display: none;
    flex-direction: column; gap: 6px;
    min-width: 220px;
    background: linear-gradient(180deg, rgba(15,23,32,.98), rgba(15,23,32,.96));
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 10px;
    box-shadow: var(--shadow);
  }
  .nav.open { display: flex; }
}

/* -------------------- Botões -------------------- */
.btn {
  --pad-x: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 10px var(--pad-x);
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--t), box-shadow var(--t), background var(--t);
  line-height: 1.15;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: linear-gradient(180deg, var(--primary), #cf8609);
  color: #1b1204;
  box-shadow: 0 10px 24px rgba(245,158,11,.25);
}
.btn--primary:hover { text-decoration: none; filter: saturate(1.05) brightness(1.02); }

.btn--line {
  background: transparent;
  border-color: var(--line);
}
.btn--ghost {
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.12);
}
.btn--block { width: 100%; }
.btn--lg    { padding: 14px calc(var(--pad-x) + 4px); font-size: 1.02rem; }

/* -------------------- HERO -------------------- */
.hero { position: relative; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 18px;
  align-items: start;
}
@media (max-width: 980px){
  .hero-grid { grid-template-columns: 1fr; }
}

.badges {
  display: flex; flex-wrap: wrap; gap: 8px 10px; padding: 0; margin: 8px 0 10px; list-style: none;
}
.badges li {
  padding: 6px 10px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary-ink);
  border: 1px solid rgba(245,158,11,.25);
  font-weight: 800;
  letter-spacing: .3px;
}

.cta-line { display: flex; flex-wrap: wrap; gap: 10px; margin: 6px 0 6px; }

/* Chips: deixamos apenas um (Certificado Digital) no HTML */
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px dashed var(--line);
  color: var(--ink-3);
  font-weight: 600;
}

/* Cartaz / Card lateral */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.reg-card { overflow: hidden; }
.poster img { display: block; width: 100%; height: auto; }
.reg-card__body { padding: 12px; }

/* Onda decorativa no rodapé do hero */
.hero-wave svg { width: 100%; height: 64px; display: block; }
.hero-wave path { fill: rgba(255,255,255,.05); }

/* -------------------- SOBRE -------------------- */
.checklist { padding-left: 18px; margin: 8px 0 0; }
.checklist li { margin: 6px 0; color: var(--ink-3); }

/* Card de palestrantes */
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}
.glass {
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.speakers {
  list-style: none; padding: 0; margin: 8px 0 0;
  display: grid; gap: 10px;
}
.speakers li { display: grid; grid-template-columns: 40px 1fr; gap: 10px; align-items: center; }
/* ===== Ajuste: fotos circulares dos palestrantes ===== */
.avatar-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
  display: block;
}
.avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(180deg,#e6edf9,#c7d6f3); border:1px solid #9fb4da; }
.avatar.alt { background: linear-gradient(180deg,#ffe8c2,#ffd89b); border-color:#f3c26a; }

/* -------------------- PROGRAMAÇÃO -------------------- */
.timeline {
  list-style: none; padding: 0; margin: 10px 0 0;
  display: grid; gap: 8px;
}
.timeline li {
  position: relative;
  display: grid; grid-template-columns: 70px 1fr; gap: 12px;
  align-items: start;
  padding: 10px 12px 10px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.timeline time { font-weight: 800; color: var(--primary); }

/* -------------------- LOCAL -------------------- */
.card-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 8px; }
@media (max-width: 600px){ .card-row { grid-template-columns: 1fr; } }

.link-card { padding: 12px; display: grid; gap: 4px; transition: transform var(--t); }
.link-card:hover { text-decoration: none; transform: translateY(-1px); }

.map__ratio { position: relative; padding-top: 56%; border-radius: 12px; overflow: hidden; }
.map__ratio iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* -------------------- INSCRIÇÃO -------------------- */
/* Seção já herda os padrões; apenas mantemos centralização */
#inscricao .btn { min-width: 220px; }

/* -------------------- Rodapé -------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  margin-top: 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
}
.brand--footer { display: grid; grid-template-columns: 44px auto; gap: 10px; align-items:center; }
.links { display: flex; gap: 14px; }
@media (max-width: 860px){
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .links { justify-content: center; }
}

/* -------------------- Sticky CTA -------------------- */
.sticky-cta {
  position: fixed;
  right: 16px; bottom: 16px;
  display: flex; gap: 8px;
  background: rgba(15,23,32,.72);
  border: 1px solid var(--line);
  padding: 10px;
  border-radius: 14px;
  box-shadow: 0 10px 32px rgba(0,0,0,.32);
  z-index: 40;
}
@media (max-width: 520px){
  .sticky-cta { left: 16px; right: 16px; justify-content: space-between; }
}

/* -------------------- Formatos auxiliares -------------------- */
.header-grid .btn--ghost { /* botão de inscrição no menu */
  font-weight: 800;
}

/* Decorativos de fundo (opcional, já existente no HTML) */
.bg-shape { position: fixed; z-index: -1; filter: blur(80px); opacity: .16; }
.bg-shape--1 { width: 60vmax; height: 60vmax; top: -20vmax; left: -10vmax; background: radial-gradient(closest-side,#f59e0b,transparent 70%); }
.bg-shape--2 { width: 50vmax; height: 50vmax; bottom: -20vmax; right: -10vmax; background: radial-gradient(closest-side,#5b8bff,transparent 70%); }