/* ==========================================
   HEADER INSTITUCIONAL STICKY
   ========================================== */
.main-header {
  background: rgba(21, 31, 50, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-brand-center {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

/* Alineación horizontal del logo y títulos */
.header-top-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-logo-lg,
.header-logo-xl {
  height: 85px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.5));
}

.header-title-lg {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.5px;
  text-align: center;
}

/* Navegación Desktop */
.main-nav {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--accent-gold);
}

.header-action-right {
  grid-column: 3;
  justify-self: end;
}

/* Botón Iniciar Sesión / Registrarse */
.btn-header-login {
  padding: 0.65rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-header-login:hover {
  border-color: var(--accent-gold);
  color: var(--text-gold);
  background: rgba(234, 179, 8, 0.1);
}

/* ==========================================
   HEADER RESPONSIVO (MOBILE)
   ========================================== */
@media (max-width: 768px) {
  .main-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem 0.75rem;
    gap: 1rem;
  }

  .header-brand-center {
    width: 100%;
  }

  /* Distribución de logo y texto en móviles */
  .header-top-brand {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-align: left;
  }

  .header-logo-lg,
  .header-logo-xl {
    height: 55px !important;
    width: auto;
  }

  .header-title-lg {
    font-size: 0.95rem;
    line-height: 1.2;
    text-align: left;
  }

  /* Barra de navegación deslizable (scroll horizontal) */
  .main-nav {
    display: flex;
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
    padding: 0.5rem 0;
    gap: 1rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
  }

  .main-nav::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Edge */
  }

  .nav-link {
    font-size: 0.85rem;
    padding: 0.4rem 0.6rem;
    flex-shrink: 0;
  }

  /* Botón de acceso a todo el ancho */
  .header-action-right {
    width: 100%;
  }

  .btn-header-login {
    width: 100%;
    justify-content: center;
    display: flex;
    padding: 0.65rem;
  }
}