/* ===== Core reveal states ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  will-change: transform, opacity;
}
.revealed {
  opacity: 1;
  transform: none;
  transition: opacity 600ms ease, transform 600ms ease;
}

/* Directional variants via data-reveal */
.reveal[data-reveal="up"] {
  transform: translateY(16px);
}
.reveal[data-reveal="down"] {
  transform: translateY(-16px);
}
.reveal[data-reveal="left"] {
  transform: translateX(20px);
}
.reveal[data-reveal="right"] {
  transform: translateX(-20px);
}

/* ===== Card hover / tilt (CSS-only fallback) ===== */
.card {
  background: var(--card-bg, #0b0f17);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 12px;
  padding: 16px;
  transition: transform 200ms ease, box-shadow 200ms ease,
    border-color 200ms ease;
  transform-style: preserve-3d;
}
.card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  border-color: rgba(255, 255, 255, 0.15);
}

/* ===== Fancy nav underline ===== */
.nav {
  display: flex;
  gap: 20px;
  align-items: center;
}
.nav__link {
  position: relative;
  text-decoration: none;
  color: inherit;
  padding: 6px 0;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, #6ee7f9, #a78bfa, #f472b6);
  transition: width 250ms ease;
}
.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  width: 100%;
}

/* ===== Smooth anchor scrolling (CSS part) ===== */
html {
  scroll-behavior: smooth;
}

/* ===== Primary button glow ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  background: linear-gradient(90deg, #7c3aed, #2563eb);
  color: #fff;
  border: 0;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
  transition: transform 150ms ease, box-shadow 200ms ease, filter 200ms ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 38px rgba(37, 99, 235, 0.45);
  filter: brightness(1.06);
}

/* ===== Gradient text shimmer (hero headings) ===== */
.shimmer {
  background: linear-gradient(90deg, #93c5fd, #a78bfa, #fca5a5, #93c5fd);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shimmer 4.5s linear infinite;
}
@keyframes shimmer {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 200% 50%;
  }
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .shimmer {
    animation: none !important;
  }
}
@media (pointer: coarse) {
  .tilt {
    transform: none !important;
  }
  .tilt:hover {
    transform: none !important;
  }
}

/* ===== Subtle section dividers ===== */
section {
  scroll-margin-top: 80px;
}