/* ═══════════════════════════════════════════════════════
   AMAN PRINTERS — animations.css
   Scroll reveals, keyframes, transitions
═══════════════════════════════════════════════════════ */

/* ─── REVEAL CLASSES (JS adds .visible) ─── */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity .75s var(--ease),
    transform .75s var(--ease);
  transition-delay: var(--delay, 0s);
  will-change: transform, opacity;
}
.reveal-up.visible { opacity: 1; transform: translateY(0); }

.reveal-left {
  opacity: 0; transform: translateX(-40px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
  transition-delay: var(--delay, 0s);
  will-change: transform, opacity;
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0; transform: translateX(40px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
  transition-delay: var(--delay, 0s);
  will-change: transform, opacity;
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

.reveal-scale {
  opacity: 0; transform: scale(.92);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
  transition-delay: var(--delay, 0s);
  will-change: transform, opacity;
}
.reveal-scale.visible { opacity: 1; transform: scale(1); }

.reveal-fade {
  opacity: 0;
  transition: opacity .9s var(--ease);
  transition-delay: var(--delay, 0s);
  will-change: opacity;
}
.reveal-fade.visible { opacity: 1; }

/* ─── GLOBAL KEYFRAMES ─── */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}
@keyframes gradientShift {
  0%,100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes bounceIn {
  0%   { opacity: 0; transform: scale(.3); }
  50%  { opacity: 1; transform: scale(1.05); }
  70%  { transform: scale(.9); }
  100% { transform: scale(1); }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-60px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(60px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideInUp {
  from { opacity: 0; transform: translateY(60px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes zoomIn {
  from { opacity: 0; transform: scale(.5); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes typewriter {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* ─── ANIMATED GRADIENT BACKGROUND ─── */
.animated-grad-bg {
  background: linear-gradient(270deg, #7c3aed, #2563eb, #7c3aed, #2563eb);
  background-size: 300% 300%;
  animation: gradientShift 6s ease infinite;
}

/* ─── CARD SHIMMER ON HOVER ─── */
.shimmer-card {
  position: relative; overflow: hidden;
}
.shimmer-card::after {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 60%; height: 100%;
  transform: translateX(-150%);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent);
  transition: transform .5s var(--ease);
}
.shimmer-card:hover::after { transform: translateX(250%); }

/* ─── HERO TITLE CHAR ANIMATION ─── */
.hero-title .title-line {
  overflow: hidden;
  display: block;
}

/* ─── COUNTER ANIMATION BASE ─── */
.cc-num { transition: all .3s; }

/* ─── PORTFOLIO ITEM — stagger ─── */
.portfolio-item.hidden { display: none; }
.portfolio-item.fade-in {
  animation: bounceIn .5s var(--ease) both;
}

/* ─── PAGE PROGRESS BAR ─── */
#progress-bar {
  position: fixed; top: 0; left: 0; z-index: 99997;
  height: 3px; width: 100%; transform: scaleX(0); transform-origin: left;
  background: var(--grad-primary);
  transition: transform .1s linear;
  will-change: transform;
}

/* ─── SECTION DIVIDER ─── */
.section-divider {
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}

/* ─── ANIMATED UNDERLINE ─── */
.anim-underline {
  position: relative; display: inline-block;
}
.anim-underline::after {
  content: '';
  position: absolute; bottom: -2px; left: 0;
  width: 100%; height: 2px; transform: scaleX(0); transform-origin: left;
  background: var(--grad-primary);
  transition: transform .4s var(--ease);
}
.anim-underline:hover::after { transform: scaleX(1); }