/* ==========================================================================
   CABEÇALHO OFICIAL DO SITE
   Regras copiadas do <style> do index.html, sem alteração, para que a
   programacao.html use exatamente o mesmo nav — mesma pílula, mesmo menu
   hambúrguer, mesma animação de entrada.

   Se o nav do index.html mudar, replique a mudança aqui.
   ========================================================================== */

.nav {
  position: fixed;
  top: 26px; left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1760px;
  margin: 0;
  padding: 14px 16px 14px 32px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(16, 20, 38, 0.85), rgba(8, 11, 24, 0.85));
}

body.photo-bg .nav {
  background: linear-gradient(180deg, rgba(9, 26, 58, 0.82), rgba(5, 18, 44, 0.82));
  border-color: rgba(170, 195, 240, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  width: calc(100% - 64px);
}

.brand { display: flex; align-items: center; }
.brand-logo { height: 44px; width: auto; display: block; }

.nav-links { display: flex; align-items: center; gap: 2px; }

.nav-links a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  color: var(--text-mid);
  text-decoration: none;
  transition: color 0.18s ease, background 0.18s ease;
}

.nav-links a:hover { color: var(--text-hi); }

.nav-links a.active {
  color: var(--text-hi);
  background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.07);
  padding: 10px 21px;
}

.nav-links a.active::before {
  content: "";
  position: absolute;
  top: -1px; left: 50%;
  transform: translateX(-50%);
  width: 46%; height: 1.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.75), transparent);
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 30;
  background: rgba(4, 10, 28, 0.45);
  -webkit-backdrop-filter: blur(11px);
  backdrop-filter: blur(11px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

body.nav-open .nav-backdrop { opacity: 1; visibility: visible; pointer-events: auto; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  margin: 0 auto;
  border-radius: 2px;
  background: var(--text-hi);
  transition: transform 0.28s cubic-bezier(0.16,1,0.3,1), opacity 0.18s ease;
}

.nav.menu-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.menu-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: flex;
  position: absolute;
  top: calc(100% + 12px);
  left: 0; right: 0;
  flex-direction: column;
  gap: 2px;
  padding: 14px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(9,26,58,0.97), rgba(5,18,44,0.97));
  border: 1px solid rgba(170,195,240,0.16);
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 60px rgba(2,8,24,0.55);
  opacity: 0;
  transform: translateY(-10px);
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.26s ease, transform 0.26s cubic-bezier(0.16,1,0.3,1), visibility 0.26s;
}

.nav.menu-open .nav-mobile { opacity: 1; transform: translateY(0); visibility: visible; pointer-events: auto; }

.nav-mobile a {
  padding: 14px 16px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-mid);
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.nav-mobile a:active { background: rgba(255,255,255,0.07); color: var(--text-hi); }
.nav-mobile .btn { width: 100%; margin-top: 10px; padding: 15px; }

@media (min-width: 901px) {
  .nav-toggle, .nav-mobile { display: none !important; }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav > .btn-nav { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 640px) {
  .nav { padding: 12px 12px 12px 18px; }
  body.photo-bg .nav { width: calc(100% - 28px); }
}

@media (prefers-reduced-motion: no-preference) {
  body.animate-in .nav {
    animation: nav-drop 1s cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: 0.15s;
  }
  @keyframes nav-drop {
    from { opacity: 0; transform: translateX(-50%) translateY(-18px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
  }
}