/* ============================================================
   MS WEB INTRO — integração com o site principal
   A animação é isolada em .ms-intro-* para não interferir
   no restante do site.
   ============================================================ */

.ms-intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #020308;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 900ms cubic-bezier(0.22, 0.61, 0.36, 1),
              visibility 0s linear 0s;
}

.ms-intro-overlay.is-transitioning {
  background: rgba(2, 3, 8, 0.34);
  transition:
    background 1450ms cubic-bezier(0.22, 0.61, 0.36, 1),
    opacity 1450ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.ms-intro-overlay.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 900ms cubic-bezier(0.22, 0.61, 0.36, 1),
              visibility 0s linear 900ms;
}

.ms-intro-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.ms-intro-mark {
  position: absolute;
  inset-inline: 0;
  bottom: 12%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-inline: 24px;
  text-align: center;
  pointer-events: none;
  font-family: var(--font-display);
}

.ms-intro-title {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.6rem, 5vw, 3rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  text-shadow: 0 0 28px rgba(39, 167, 255, 0.35);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.ms-intro-title.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.ms-intro-rule {
  width: 96px;
  height: 1px;
  background: rgba(61, 125, 255, 0.5);
  transform: scaleX(0);
  opacity: 0;
  transition: transform 700ms ease, opacity 700ms ease;
}

.ms-intro-rule.is-visible {
  transform: scaleX(1);
  opacity: 1;
}

body.ms-intro-lock {
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .ms-intro-overlay,
  .ms-intro-title,
  .ms-intro-rule,
  body.ms-intro-lock .site-header,
  body.ms-intro-lock main,
  body.ms-intro-lock .site-footer {
    transition: none;
  }
}


/* ============================================================
   TRANSIÇÃO INTRO → HOME — handoff do circuito para a interface
   ============================================================ */
body.ms-intro-lock .site-header,
body.ms-intro-lock main,
body.ms-intro-lock .site-footer {
  opacity: 0;
  transform: translateY(8px) scale(1.008);
  transition:
    opacity 900ms cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 1100ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

body.ms-intro-transition .site-header,
body.ms-intro-transition main,
body.ms-intro-transition .site-footer {
  opacity: 1;
  transform: translateY(0) scale(1);
}

body.ms-intro-transition .hero-bg {
  animation: msHeroAmbientIn 1400ms cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

@keyframes msHeroAmbientIn {
  from { opacity: 0.15; transform: scale(1.035); }
  to   { opacity: 1; transform: scale(1); }
}
/* ============================================================
   INTRO — ajuste mobile: marca maior e composição mais aberta
   ============================================================ */
@media (max-width: 720px) {
  .ms-intro-title {
    font-size: clamp(1.95rem, 8vw, 2.65rem);
    letter-spacing: 0.34em;
    text-indent: 0.34em;
  }
}

@media (max-width: 520px) {
  .ms-intro-mark {
    bottom: 10%;
    gap: 10px;
  }

  .ms-intro-title {
    font-size: clamp(2.05rem, 9vw, 2.75rem);
  }
}