/* html-ppt :: animations.css
 * Apply by adding class="anim-<name>" or data-anim="<name>".
 * Durations are deliberately snappy; tweak --anim-dur per element.
 */
:root{--anim-dur:.7s;--anim-ease:cubic-bezier(.4,0,.2,1)}

/* ---------- FADE DIRECTIONALS ---------- */
@keyframes kf-fade-up{from{opacity:0;transform:translateY(32px)}to{opacity:1;transform:none}}
@keyframes kf-fade-down{from{opacity:0;transform:translateY(-32px)}to{opacity:1;transform:none}}
@keyframes kf-fade-left{from{opacity:0;transform:translateX(-40px)}to{opacity:1;transform:none}}
@keyframes kf-fade-right{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:none}}
.anim-fade-up{animation:kf-fade-up var(--anim-dur) var(--anim-ease) both}
.anim-fade-down{animation:kf-fade-down var(--anim-dur) var(--anim-ease) both}
.anim-fade-left{animation:kf-fade-left var(--anim-dur) var(--anim-ease) both}
.anim-fade-right{animation:kf-fade-right var(--anim-dur) var(--anim-ease) both}

/* ---------- RISE / DROP / ZOOM / BLUR / GLITCH ---------- */
@keyframes kf-rise{from{opacity:0;transform:translateY(60px) scale(.97);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}
@keyframes kf-drop{from{opacity:0;transform:translateY(-60px) scale(.97)}to{opacity:1;transform:none}}
@keyframes kf-zoom{0%{opacity:0;transform:scale(.6)}60%{transform:scale(1.04)}100%{opacity:1;transform:scale(1)}}
@keyframes kf-blur{from{opacity:0;filter:blur(18px)}to{opacity:1;filter:none}}
@keyframes kf-glitch{0%{opacity:0;transform:translateX(0);clip-path:inset(0 0 0 0)}
  20%{opacity:1;transform:translateX(-6px);clip-path:inset(20% 0 30% 0)}
  40%{transform:translateX(4px);clip-path:inset(50% 0 10% 0)}
  60%{transform:translateX(-3px);clip-path:inset(10% 0 60% 0)}
  80%{transform:translateX(2px);clip-path:inset(0 0 0 0)}
  100%{opacity:1;transform:none}}
.anim-rise-in{animation:kf-rise .9s var(--anim-ease) both}
.anim-drop-in{animation:kf-drop .8s var(--anim-ease) both}
.anim-zoom-pop{animation:kf-zoom .7s cubic-bezier(.22,1.3,.36,1) both}
.anim-blur-in{animation:kf-blur .8s var(--anim-ease) both}
.anim-glitch-in{animation:kf-glitch .8s steps(5,end) both}

/* ---------- TYPEWRITER ---------- */
.anim-typewriter{display:inline-block;overflow:hidden;white-space:nowrap;border-right:2px solid currentColor;
  width:0;animation:kf-type 2.4s steps(40,end) forwards, kf-caret 1s step-end infinite}
@keyframes kf-type{to{width:100%}}
@keyframes kf-caret{50%{border-color:transparent}}

/* ---------- GLOW / SHIMMER / GRADIENT-FLOW ---------- */
@keyframes kf-neon{0%,100%{text-shadow:0 0 8px var(--accent),0 0 20px var(--accent)}
  50%{text-shadow:0 0 16px var(--accent),0 0 40px var(--accent),0 0 80px var(--accent)}}
.anim-neon-glow{animation:kf-neon 2s ease-in-out infinite}

.anim-shimmer-sweep{position:relative;overflow:hidden}
.anim-shimmer-sweep::after{content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,transparent 40%,rgba(255,255,255,.55) 50%,transparent 60%);
  transform:translateX(-100%);animation:kf-shimmer 2.4s var(--anim-ease) infinite}
@keyframes kf-shimmer{to{transform:translateX(100%)}}

.anim-gradient-flow{background:linear-gradient(90deg,var(--accent),var(--accent-2,var(--accent)),var(--accent-3,var(--accent)),var(--accent));
  background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;
  animation:kf-gradflow 4s linear infinite}
@keyframes kf-gradflow{to{background-position:300% 0}}

/* ---------- STAGGER LIST ---------- */
.anim-stagger-list > *{opacity:0;animation:kf-rise .65s var(--anim-ease) both}
.anim-stagger-list > *:nth-child(1){animation-delay:.05s}
.anim-stagger-list > *:nth-child(2){animation-delay:.15s}
.anim-stagger-list > *:nth-child(3){animation-delay:.25s}
.anim-stagger-list > *:nth-child(4){animation-delay:.35s}
.anim-stagger-list > *:nth-child(5){animation-delay:.45s}
.anim-stagger-list > *:nth-child(6){animation-delay:.55s}
.anim-stagger-list > *:nth-child(7){animation-delay:.65s}
.anim-stagger-list > *:nth-child(8){animation-delay:.75s}
.anim-stagger-list > *:nth-child(n+9){animation-delay:.85s}

/* ---------- COUNTER-UP (JS-driven, marker class only) ---------- */
.counter{font-variant-numeric:tabular-nums}

/* ---------- SVG PATH DRAW ---------- */
.anim-path-draw path,.anim-path-draw line,.anim-path-draw polyline,.anim-path-draw circle,.anim-path-draw rect{
  stroke-dasharray:1000;stroke-dashoffset:1000;animation:kf-draw 2s var(--anim-ease) forwards}
@keyframes kf-draw{to{stroke-dashoffset:0}}

/* ---------- PARALLAX TILT (hover) ---------- */
.anim-parallax-tilt{transform-style:preserve-3d;transition:transform .4s var(--anim-ease)}
.anim-parallax-tilt:hover{transform:perspective(900px) rotateX(6deg) rotateY(-8deg) translateZ(10px)}

/* ---------- CARD FLIP 3D ---------- */
@keyframes kf-flip{from{transform:perspective(1200px) rotateY(-90deg);opacity:0}
  to{transform:perspective(1200px) rotateY(0);opacity:1}}
.anim-card-flip-3d{animation:kf-flip .9s var(--anim-ease) both;transform-style:preserve-3d;backface-visibility:hidden}

/* ---------- CUBE ROTATE 3D ---------- */
@keyframes kf-cube{from{transform:perspective(1200px) rotateX(20deg) rotateY(-90deg) translateZ(-200px);opacity:0}
  to{transform:perspective(1200px) rotateX(0) rotateY(0) translateZ(0);opacity:1}}
.anim-cube-rotate-3d{animation:kf-cube 1s var(--anim-ease) both}

/* ---------- PAGE TURN 3D ---------- */
@keyframes kf-pageturn{from{transform:perspective(1600px) rotateY(-85deg);transform-origin:left center;opacity:0}
  to{transform:perspective(1600px) rotateY(0);opacity:1}}
.anim-page-turn-3d{animation:kf-pageturn 1s var(--anim-ease) both;transform-origin:left center}

/* ---------- PERSPECTIVE ZOOM ---------- */
@keyframes kf-pzoom{from{opacity:0;transform:perspective(1400px) translateZ(-400px) rotateX(12deg)}
  to{opacity:1;transform:none}}
.anim-perspective-zoom{animation:kf-pzoom 1s var(--anim-ease) both}

/* ---------- MARQUEE SCROLL ---------- */
.anim-marquee-scroll{display:flex;gap:48px;white-space:nowrap;animation:kf-marquee 20s linear infinite}
@keyframes kf-marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- KEN BURNS ---------- */
@keyframes kf-kenburns{0%{transform:scale(1) translate(0,0)}100%{transform:scale(1.15) translate(-2%,-1%)}}
.anim-kenburns{animation:kf-kenburns 14s ease-in-out infinite alternate}

/* ---------- CONFETTI BURST (pseudo — pure CSS sparkles) ---------- */
.anim-confetti-burst{position:relative}
.anim-confetti-burst::before,.anim-confetti-burst::after{
  content:"";position:absolute;top:50%;left:50%;width:8px;height:8px;border-radius:50%;
  background:var(--accent);box-shadow:
    20px -30px 0 var(--accent-2,var(--accent)),-25px -20px 0 var(--accent-3,var(--accent)),
    30px 20px 0 var(--good,#1aaf6c),-30px 25px 0 var(--warn,#f5a524),
    40px -10px 0 var(--bad,#e0445a),-45px 0 0 var(--accent),
    10px 40px 0 var(--accent-2,var(--accent)),-15px -40px 0 var(--accent-3,var(--accent));
  opacity:0;animation:kf-confetti 1.2s var(--anim-ease) forwards}
.anim-confetti-burst::after{animation-delay:.15s;transform:rotate(45deg)}
@keyframes kf-confetti{0%{opacity:0;transform:scale(.2)}30%{opacity:1}100%{opacity:0;transform:scale(2.2)}}

/* ---------- SPOTLIGHT ---------- */
@keyframes kf-spot{0%{clip-path:circle(0% at 50% 50%)}100%{clip-path:circle(140% at 50% 50%)}}
.anim-spotlight{animation:kf-spot 1.1s var(--anim-ease) both}

/* ---------- MORPH SHAPE (SVG) ---------- */
.anim-morph-shape path{animation:kf-morph 6s ease-in-out infinite alternate}
@keyframes kf-morph{0%{d:path("M60,120 Q120,20 180,120 T300,120")}
  100%{d:path("M60,120 Q120,220 180,120 T300,120")}}

/* ---------- RIPPLE REVEAL ---------- */
@keyframes kf-ripple{0%{clip-path:circle(0% at 20% 80%);opacity:.4}
  100%{clip-path:circle(160% at 20% 80%);opacity:1}}
.anim-ripple-reveal{animation:kf-ripple 1.2s var(--anim-ease) both}

/* reduced motion */
@media (prefers-reduced-motion: reduce){
  [class*="anim-"]{animation:none!important;transition:none!important}
}
