/* ==============================================
   ANIMATIONS
   ============================================== */

/* === Entrance animations (triggered by IntersectionObserver) === */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0s);
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* === Typing cursor === */
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background-color: var(--color-accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s step-end infinite;
}

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

/* === Loading spinner === */
.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  background-color: var(--color-bg-primary);
  transition: opacity 0.4s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* === Navbar toggle bars animation === */
.navbar__toggle-bar {
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.navbar--open .navbar__toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.navbar--open .navbar__toggle-bar:nth-child(2) {
  opacity: 0;
}

.navbar--open .navbar__toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}