/* ============================================================
   ANIMATIONS.CSS
   Lightweight animation utilities + base transitions
   Designed to complement GSAP (not replace it)
   ============================================================ */

/* ----------------------------------------------
   1. BASE TRANSITIONS
---------------------------------------------- */

a,
button,
.vm-btn,
.btn,
.card,
.vm-card,
.site-header {
  transition:
    background-color 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease,
    box-shadow 0.18s ease,
    transform 0.16s ease;
}

/* Hover depth for cards */

.card:hover,
.vm-card:hover {
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.06);
  transform: translateY(-2px);
}

/* Buttons already defined in components.css receive smoother feel here */

.btn:hover,
.vm-btn:hover {
  transform: translateY(-1px);
}

/* ----------------------------------------------
   2. FADE / SLIDE UTILITY CLASSES
   (GSAP can toggle these classes or override via JS)
---------------------------------------------- */

.fade-in {
  opacity: 0;
  transform: translateY(10px);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Slight upward slide */

.slide-up {
  opacity: 0;
  transform: translateY(20px);
}

.slide-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Horizontal slide (left / right) */

.slide-in-left {
  opacity: 0;
  transform: translateX(-20px);
}

.slide-in-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(20px);
}

.slide-in-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* ----------------------------------------------
   3. HERO + SECTION-SPECIFIC ANIMATION HOOKS
---------------------------------------------- */

/* Hero text / metrics */

.vm-hero__content,
.vm-hero__visual {
  will-change: transform, opacity;
}

/* Cards in services / engagement sections */

.vm-grid--services .vm-card {
  will-change: transform, box-shadow, opacity;
}

/* Blog cards */

.blog-card {
  will-change: transform, box-shadow;
}

/* ----------------------------------------------
   4. HEADER SCROLL STATE
   (Toggle class via JS)
---------------------------------------------- */

body.header-scrolled .site-header {
  transform: translateY(0);
}

.site-header {
  will-change: box-shadow, background-color, transform;
}

/* Subtle “appear” when first loaded */

.site-header {
  opacity: 0;
  transform: translateY(-8px);
}

.site-header.is-ready {
  opacity: 1;
  transform: translateY(0);
}

/* ----------------------------------------------
   5. LOADING STATES
---------------------------------------------- */

.is-loading {
  pointer-events: none;
  opacity: 0.6;
}

.is-disabled {
  pointer-events: none;
  opacity: 0.4;
}

/* ----------------------------------------------
   6. ANIMATED UNDERLINES FOR LINKS (OPTIONAL)
---------------------------------------------- */

.link-underline {
  position: relative;
  display: inline-block;
}

.link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15em;
  width: 0;
  height: 1px;
  background-color: currentColor;
  transition: width 0.18s ease;
}

.link-underline:hover::after {
  width: 100%;
}

/* ----------------------------------------------
   7. REDUCED MOTION HANDLING
---------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in,
  .slide-up,
  .slide-in-left,
  .slide-in-right {
    opacity: 1 !important;
    transform: none !important;
  }
}