.site-header,
.full-width-nav {
  position: sticky;
  top: 0;
  z-index: 80;
  transition:
    background var(--ds-transition-base),
    border-color var(--ds-transition-base),
    box-shadow var(--ds-transition-base);
}

.site-header::before,
.full-width-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 8, 10, 0.72), rgba(8, 8, 10, 0.16));
  opacity: 0;
  transition: opacity var(--ds-transition-base);
  pointer-events: none;
}

.site-header.is-solid,
.full-width-nav.is-solid {
  background: rgba(10, 10, 12, 0.74);
  border-bottom: 1px solid var(--ds-color-border);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(18px);
}

.site-header.is-solid::before,
.full-width-nav.is-solid::before {
  opacity: 1;
}

.site-header .topbar,
.full-width-nav .topbar {
  position: relative;
  min-height: var(--ds-header-height);
  padding-block: 12px;
}

.brand-lockup strong {
  font-family: var(--ds-font-display);
  font-size: clamp(1.6rem, 2vw, 2rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-lockup p {
  color: var(--ds-color-text-soft);
}

.site-menu {
  background: transparent;
  border: 0;
  padding: 0;
  gap: 4px;
}

.menu-link {
  position: relative;
  min-height: 44px;
  padding: 0 14px;
  color: var(--ds-color-text-muted);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.menu-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 8px;
  height: 2px;
  border-radius: 999px;
  background: var(--ds-color-accent);
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity var(--ds-transition-fast), transform var(--ds-transition-fast);
}

.menu-link:hover,
.menu-link.active {
  background: transparent;
  color: var(--ds-color-text);
}

.menu-link:hover::after,
.menu-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-auth-actions {
  gap: 10px;
}

.site-header .secondary-button,
.site-header .primary-button,
.full-width-nav .secondary-button,
.full-width-nav .primary-button {
  min-height: 42px;
  padding-inline: 18px;
}

.public-footer {
  background: rgba(14, 15, 18, 0.78);
  border-color: var(--ds-color-border);
}

.public-footer-grid {
  gap: 28px;
}

.public-footer-links a {
  color: var(--ds-color-text-muted);
}

.public-footer-links a:hover,
.public-footer-base a:hover {
  color: var(--ds-color-text);
}

/* Fase 4: linguagem pública Cai na Real */
.public-page {
  background: #0a0b0d;
}

.public-page .page-main {
  width: min(var(--ds-container-width), calc(100% - 40px));
}

.public-hero-modern {
  position: relative;
  min-height: min(760px, calc(100vh - 20px));
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: linear-gradient(110deg, #0b0c0e 14%, rgba(11,12,14,.7) 46%, rgba(11,12,14,.16)), var(--hero-image) center/cover;
}

.public-hero-modern::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(0deg, rgba(5,6,8,.88), transparent 55%);
}

.public-hero-modern__content {
  width: min(720px, 100%);
  padding: clamp(56px, 10vw, 132px) clamp(24px, 7vw, 96px);
}

.public-hero-modern h1 {
  max-width: 720px;
  margin: 18px 0 12px;
  color: var(--ds-color-cream);
  font-size: clamp(4rem, 10vw, 8.6rem);
  line-height: .82;
}

.public-hero-modern h1 em,
.impact-band em { color: var(--ds-color-accent); font-style: normal; }
.public-hero-modern__lead { color: var(--ds-color-accent); font-size: clamp(1.35rem, 2.4vw, 2rem); font-weight: 800; }
.public-hero-modern__text { max-width: 490px; margin: 18px 0 28px; color: rgba(244,238,226,.76); font-size: 1.05rem; }
.public-hero-modern__mark { position: absolute; right: 5%; bottom: 10%; color: rgba(255,255,255,.2); font-family: var(--ds-font-display); font-size: 8rem; line-height: 1; }

.public-section { padding: clamp(72px, 10vw, 140px) 0; }
.section-kicker { margin-bottom: 14px; color: var(--ds-color-accent); font-size: .72rem; font-weight: 800; letter-spacing: .2em; text-transform: uppercase; }
.public-section h2 { max-width: 720px; margin: 0; color: var(--ds-color-cream); font-size: clamp(2.2rem, 5vw, 4.8rem); line-height: .98; }
.public-intro { border-bottom: 1px solid var(--ds-color-border); }
.public-intro__grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(280px,.75fr); gap: 8vw; align-items: end; }
.public-intro__grid p { color: var(--ds-color-text-muted); font-size: 1.08rem; }
.text-link { display: inline-flex; align-items: center; gap: 10px; margin-top: 18px; color: var(--ds-color-cream); font-weight: 800; }
.text-link span { color: var(--ds-color-accent); font-size: 1.3em; transition: transform .2s ease; }
.text-link:hover span { transform: translate(3px,-3px); }
.concept-row { display: flex; gap: 12px; margin-top: 60px; flex-wrap: wrap; }
.concept-row span { padding: 12px 18px; border: 1px solid var(--ds-color-border); border-radius: 999px; color: var(--ds-color-text-muted); }
.section-heading__aside { max-width: 260px; color: var(--ds-color-text-soft); }
.journey-section { border-bottom: 1px solid var(--ds-color-border); }
.journey-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; margin-top: 56px; border: 1px solid var(--ds-color-border); background: var(--ds-color-border); }
.journey-grid article { min-height: 210px; padding: 28px; background: #101216; }
.journey-grid span { color: var(--ds-color-accent); font-family: var(--ds-font-display); font-size: 2rem; }
.journey-grid h3 { margin: 32px 0 8px; color: var(--ds-color-cream); font-size: 1.4rem; }
.journey-grid p { color: var(--ds-color-text-muted); }
.modern-card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 38px; }
.modern-card { overflow: hidden; border: 1px solid var(--ds-color-border); border-radius: var(--ds-radius-lg); background: #121419; transition: transform .25s ease, border-color .25s ease; }
.modern-card:hover { transform: translateY(-5px); border-color: rgba(224,173,100,.5); }
.modern-card__media { aspect-ratio: 16/9; display: grid; place-items: center; overflow: hidden; background: #1b1d22; }
.modern-card__media img { width: 100%; height: 100%; object-fit: cover; }
.modern-card__placeholder { color: var(--ds-color-accent); font-family: var(--ds-font-display); font-size: 2rem; }
.modern-card__body { padding: 24px; }
.modern-card__body h3 { margin: 8px 0; color: var(--ds-color-cream); font-size: 1.35rem; }
.modern-card__body p { color: var(--ds-color-text-muted); }
.card-meta { color: var(--ds-color-accent) !important; font-size: .76rem !important; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.modern-card--plain { min-height: 220px; }
.public-empty-state { display: grid; place-items: center; gap: 8px; min-height: 190px; margin-top: 38px; border: 1px dashed rgba(255,255,255,.18); border-radius: var(--ds-radius-lg); color: var(--ds-color-text-muted); text-align: center; }
.public-empty-state span { color: var(--ds-color-accent); font-size: 2rem; }
.impact-band, .participate-band { display: flex; align-items: end; justify-content: space-between; gap: 32px; padding: clamp(48px, 7vw, 92px); border-radius: var(--ds-radius-xl); }
.impact-band { margin: 38px 0; background: linear-gradient(110deg, rgba(17,19,24,.98), rgba(42,31,24,.82)), url('../../uploads/site_media/home_nextcloud_20260608.png') center/cover; }
.impact-band h2, .participate-band h2 { margin: 8px 0; color: var(--ds-color-cream); font-size: clamp(2.6rem, 6vw, 5.4rem); line-height: .9; }
.impact-band p, .participate-band p { color: var(--ds-color-text-muted); }
.participate-band { background: var(--ds-color-accent); }
.participate-band .section-kicker, .participate-band h2 { color: #17120d; }
.participate-band p { color: rgba(23,18,13,.72); }
.participate-band .primary-button { background: #17120d; color: var(--ds-color-cream); }
.sponsor-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-top: 28px; }
.sponsor-grid .sponsor-mark { min-height: 150px; display: grid; place-items: center; border: 1px solid var(--ds-color-border); border-radius: var(--ds-radius-md); }
.page-hero { background: radial-gradient(circle at 78% 12%, rgba(224,173,100,.13), transparent 32%), #0b0c0f; }
.page-hero-content { padding-block: clamp(80px, 13vw, 170px); }
.page-hero-copy { max-width: 780px; }
.page-hero-copy h1 { margin: 14px 0 18px; color: var(--ds-color-cream); font-size: clamp(3.3rem, 8vw, 7rem); line-height: .88; }
.page-hero-copy .hero-subtitle { max-width: 640px; color: var(--ds-color-text-muted); font-size: 1.1rem; }
.page-main > .section { border-bottom: 1px solid var(--ds-color-border); }
.page-main .page-hero-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; padding-block: 72px; }
.page-main .square-hero-card { min-height: 240px; overflow: hidden; background: #121419; }
.page-main .showcase-grid, .page-main .feature-grid, .page-main .contact-layout, .page-main .contact-info-grid { padding-block: 80px; }
.page-main .showcase-grid, .page-main .feature-grid { grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.page-main .panel-card, .page-main .feature-card { padding: 28px; border-color: var(--ds-color-border); background: #121419; }
.page-main .panel-card h3, .page-main .feature-card h3 { color: var(--ds-color-cream); }
.news-section { padding-block: 84px; }
.news-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.news-card { padding: 24px; border: 1px solid var(--ds-color-border); border-radius: var(--ds-radius-lg); background: #121419; }
.news-card time { color: var(--ds-color-accent); font-size: .76rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.news-card h3 { margin: 18px 0 8px; color: var(--ds-color-cream); font-size: 1.35rem; }
.news-card p { color: var(--ds-color-text-muted); }
.contact-layout { grid-template-columns: repeat(2, minmax(0,1fr)); }
.contact-info-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.empty-state { padding: 44px 24px; border: 1px dashed rgba(255,255,255,.2); border-radius: var(--ds-radius-lg); color: var(--ds-color-text-muted); text-align: center; }

@media (max-width: 768px) {
  .page-main .page-hero-grid, .page-main .showcase-grid, .page-main .feature-grid, .news-grid, .contact-layout, .contact-info-grid { grid-template-columns: 1fr; }
  .page-hero-content { padding-block: 72px; }
}
.reveal-on-scroll { opacity: 1; transform: none; }

@media (prefers-reduced-motion: no-preference) {
  .reveal-on-scroll { animation: public-rise .7s ease both; }
  @keyframes public-rise { from { opacity: .35; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
}