/* ============================================================
   animations.css — drop-in animation styles
   Matches your portfolio palette: near-black bg, teal accent.
   Override anything via the CSS variables below.
   ============================================================ */

:root {
  --anim-accent: #2dd4bf;          /* your teal */
  --anim-accent-soft: rgba(45, 212, 191, 0.14);
  --anim-ease: cubic-bezier(0.215, 0.61, 0.355, 1);
  --anim-duration: 0.9s;
}

/* ---------- 1. Scroll progress bar (top of page) ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  z-index: 9999;
  pointer-events: none;
  background: transparent;
}
.scroll-progress__bar {
  height: 100%;
  width: 100%;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--anim-accent), #5eead4);
  box-shadow: 0 0 12px rgba(45, 212, 191, 0.55);
}

/* ---------- 2. Scroll reveal (fade + rise) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--anim-duration) var(--anim-ease),
    transform var(--anim-duration) var(--anim-ease);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
/* Stagger helper: add .reveal-group to a parent, children animate one after another */
.reveal-group > * {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--anim-duration) var(--anim-ease),
    transform var(--anim-duration) var(--anim-ease);
  transition-delay: calc(var(--i, 0) * 90ms);
  will-change: opacity, transform;
}
.reveal-group.in > * {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 3. Typewriter caret ---------- */
.typewriter::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 3px;
  vertical-align: -0.12em;
  background: var(--anim-accent);
  animation: caret-blink 1s steps(1) infinite;
}
@keyframes caret-blink {
  0%, 45% { opacity: 1; }
  50%, 95% { opacity: 0; }
}

/* ---------- 4. Animated gradient text ---------- */
.gradient-text {
  background: linear-gradient(
    100deg,
    var(--anim-accent) 0%,
    #5eead4 25%,
    #a7f3d0 50%,
    var(--anim-accent) 75%
  );
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-slide 7s linear infinite;
}
@keyframes gradient-slide {
  to { background-position: 220% 0; }
}

/* ---------- 5. Spotlight cards (glow follows cursor) ---------- */
.spotlight {
  position: relative;
  overflow: hidden;
}
.spotlight::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    320px circle at var(--mx, 50%) var(--my, 50%),
    var(--anim-accent-soft),
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.spotlight:hover::before {
  opacity: 1;
}
/* Thin accent border that lights up near the cursor */
.spotlight::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(
    220px circle at var(--mx, 50%) var(--my, 50%),
    rgba(45, 212, 191, 0.55),
    transparent 70%
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.spotlight:hover::after {
  opacity: 1;
}

/* ---------- 6. Hero constellation canvas ---------- */
.constellation-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;   /* never blocks clicks */
  z-index: 0;
}

/* ---------- 7. Button hover lift ---------- */
.btn-anim {
  transition: transform 0.25s var(--anim-ease), box-shadow 0.25s ease, background-color 0.25s ease;
}
.btn-anim:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45, 212, 191, 0.25);
}
.btn-anim:active {
  transform: translateY(0);
}

/* ---------- 8. Nav link underline sweep ---------- */
.nav-anim {
  position: relative;
}
.nav-anim::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  height: 2px;
  width: 100%;
  background: var(--anim-accent);
  transform: scaleX(0);
  transform-origin: 100% 50%;
  transition: transform 0.35s var(--anim-ease);
}
.nav-anim:hover::after,
.nav-anim.active::after {
  transform: scaleX(1);
  transform-origin: 0 50%;
}

/* ---------- Accessibility: honor reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-group > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .gradient-text { animation: none; }
  .typewriter::after { animation: none; opacity: 1; }
  .btn-anim, .nav-anim::after { transition: none; }
}