/* ════════════════════════════════════
   KEYFRAME ANIMATIONS
════════════════════════════════════ */

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes pulse-dot {
  0%   { box-shadow: 0 0 0 0 rgba(0,255,159,0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(0,255,159,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,255,159,0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes grid-pulse {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 0.8; }
}

/* ════════════════════════════════════
   SCROLL-REVEAL STATES
════════════════════════════════════ */

/* Initial hidden state — added via JS */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

/* Visible state — toggled by IntersectionObserver */
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid children */
.reveal:nth-child(2) { transition-delay: 0.08s; }
.reveal:nth-child(3) { transition-delay: 0.16s; }
.reveal:nth-child(4) { transition-delay: 0.24s; }
.reveal:nth-child(5) { transition-delay: 0.32s; }
.reveal:nth-child(6) { transition-delay: 0.40s; }

/* ════════════════════════════════════
   ELEMENT-SPECIFIC ANIMATIONS
════════════════════════════════════ */

/* Hero text entrance */
.hero__pre    { animation: fade-up 0.6s ease 0.1s both; }
.hero__name   { animation: fade-up 0.6s ease 0.2s both; }
.hero__role   { animation: fade-up 0.6s ease 0.35s both; }
.hero__badge  { animation: fade-up 0.6s ease 0.45s both; }
.hero__actions { animation: fade-up 0.6s ease 0.55s both; }
.hero__visual  { animation: fade-in 0.9s ease 0.4s both; }
.hero__scroll  { animation: float 2.5s ease-in-out 1s infinite; }

/* Grid background pulse */
.hero__grid-bg {
  animation: grid-pulse 6s ease-in-out infinite;
}

/* Project card hover lift */
.project-card {
  transition:
    border-color 0.25s ease,
    box-shadow   0.25s ease,
    transform    0.25s ease;
}

/* Nav scroll shadow */
.nav--scrolled {
  background: rgba(10, 14, 23, 0.97) !important;
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
}

/* Active nav link underline */
.nav__links a {
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.25s ease;
}
.nav__links a:hover::after,
.nav__links a.active::after {
  width: 100%;
}
/* Don't apply underline to the CTA button */
.nav__cta::after { display: none !important; }

/* Mobile menu slide */
@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(10,14,23,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
  }

  .nav__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  /* Burger → X animation */
  .nav__burger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav__burger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }
  .nav__burger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}