/* ============================================================
   Nightfire — Scroll & Interaction Animations
   ============================================================ */

/* --- Scroll Reveal Base States --- */
[data-scroll] {
  opacity: 0;
  will-change: opacity, transform;
}

/* Fade up (default) */
[data-scroll="fade-up"] {
  transform: translateY(30px);
}

[data-scroll="fade-up"].revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Fade left */
[data-scroll="fade-left"] {
  transform: translateX(-25px);
}

[data-scroll="fade-left"].revealed {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Fade scale */
[data-scroll="fade-scale"] {
  transform: scale(0.95);
}

[data-scroll="fade-scale"].revealed {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Stagger Delays --- */
[data-scroll-delay="1"] { transition-delay: 0.1s; }
[data-scroll-delay="2"] { transition-delay: 0.2s; }
[data-scroll-delay="3"] { transition-delay: 0.3s; }
[data-scroll-delay="4"] { transition-delay: 0.4s; }

/* --- Divider Expand --- */
.section-divider {
  transform: scaleX(0);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.section-divider.revealed {
  transform: scaleX(1);
}

/* --- Hero Parallax Layers --- */
.parallax-sky,
.parallax-stars,
.parallax-foreground {
  will-change: transform;
}

/* --- Card Hover Glow --- */
.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(232, 220, 200, 0.04),
    transparent 40%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.feature-card {
  position: relative;
}

.feature-card:hover::before {
  opacity: 1;
}

/* --- Bioluminescent Plankton --- */
.plankton {
  animation-name: plankton-glow;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}

@keyframes plankton-glow {
  0%, 100% { opacity: 0; }
  15% { opacity: 0.8; }
  40% { opacity: 0.3; }
  70% { opacity: 0.05; }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  [data-scroll] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .section-divider {
    transform: scaleX(1) !important;
    transition: none !important;
  }
}