html {
  scroll-behavior: smooth;
}

/* Topo fixo ao rolar */
.site-header {
  transition: background-color 0.25s ease, box-shadow 0.25s ease, backdrop-filter 0.25s ease;
}

.site-header.is-fixed {
  position: fixed !important;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9998;
  background: rgba(9, 15, 22, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.24);
}

/* Vídeo responsivo */
.video-card {
  width: 100%;
  max-width: 960px;
  margin: 48px auto 0;
  padding: 48px;
  border: 1px solid var(--border);
  background: rgba(204, 166, 92, 0.08);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.video-responsive {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #000;
}

.video-responsive iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

@media (max-width: 768px) {
  .video-card {
    margin-top: 36px;
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .video-card {
    padding: 8px;
  }
}

/* Botão flutuante do WhatsApp */
.whatsapp-flutuante {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 1000001;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25d366;
  color: #ffffff;
  text-decoration: none;
  box-shadow: 0 10px 28px rgba(37, 211, 102, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.whatsapp-flutuante:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 14px 34px rgba(37, 211, 102, 0.45);
}

.whatsapp-icone {
  width: 34px;
  height: 34px;
  display: block;
}

@media (max-width: 600px) {
  .whatsapp-flutuante {
    right: 16px;
    bottom: 16px;
    width: 54px;
    height: 54px;
  }

  .whatsapp-icone {
    width: 31px;
    height: 31px;
  }
}

/* Texto biográfico */
.bio-texto {
  text-align: left;
}

@media (min-width: 768px) {
  .bio-texto {
    text-align: justify;
  }
}