/* ============================================================
   AlgoDev Studio | Animation System
   ============================================================ */

/* ============================================================
   KEYFRAMES
   ============================================================ */

/* Float orbs */
@keyframes float-orb-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -40px) scale(1.05); }
  66%       { transform: translate(-20px, 20px) scale(0.97); }
}

@keyframes float-orb-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(-40px, 30px) scale(1.08); }
  66%       { transform: translate(25px, -20px) scale(0.95); }
}

@keyframes float-orb-c {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%       { transform: translate(20px, 30px) scale(1.1); }
}

/* Floating cards */
@keyframes float-card {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}

@keyframes float-card-reverse {
  0%, 100% { transform: translateY(-6px); }
  50%       { transform: translateY(6px); }
}

/* Pulse glow */
@keyframes pulse-glow-teal {
  0%, 100% { box-shadow: 0 0 20px rgba(71,215,172,0.15), 0 0 40px rgba(71,215,172,0.08); }
  50%       { box-shadow: 0 0 40px rgba(71,215,172,0.30), 0 0 80px rgba(71,215,172,0.15); }
}

@keyframes pulse-glow-blue {
  0%, 100% { box-shadow: 0 0 20px rgba(59,130,246,0.15), 0 0 40px rgba(59,130,246,0.08); }
  50%       { box-shadow: 0 0 40px rgba(59,130,246,0.30), 0 0 80px rgba(59,130,246,0.15); }
}

/* Pulse dot */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

/* Shimmer */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

/* Fade in up */
@keyframes fade-in-up {
  0%   { opacity: 0; transform: translateY(24px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Fade in down */
@keyframes fade-in-down {
  0%   { opacity: 0; transform: translateY(-24px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Fade in */
@keyframes fade-in {
  0%   { opacity: 0; }
  100% { opacity: 1; }
}

/* Scale in */
@keyframes scale-in {
  0%   { opacity: 0; transform: scale(0.95); }
  100% { opacity: 1; transform: scale(1); }
}

/* Slide in left */
@keyframes slide-in-left {
  0%   { opacity: 0; transform: translateX(-32px); }
  100% { opacity: 1; transform: translateX(0); }
}

/* Slide in right */
@keyframes slide-in-right {
  0%   { opacity: 0; transform: translateX(32px); }
  100% { opacity: 1; transform: translateX(0); }
}

/* Scan line */
@keyframes scan-line {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

/* Gradient flow */
@keyframes gradient-flow {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Rotate slow */
@keyframes rotate-slow {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Counter bounce */
@keyframes counter-bounce {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.04); }
}

/* Border glow flow */
@keyframes border-glow {
  0%   { border-color: rgba(71,215,172,0.15); }
  50%  { border-color: rgba(71,215,172,0.40); }
  100% { border-color: rgba(71,215,172,0.15); }
}

/* Blink cursor */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* Progress bar fill */
@keyframes progress-fill {
  0%   { width: 0%; }
  100% { width: var(--progress-width); }
}

/* ============================================================
   ANIMATION UTILITY CLASSES
   ============================================================ */

/* Scroll-reveal base state */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-expo), transform 0.7s var(--ease-expo);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.7s var(--ease-expo), transform 0.7s var(--ease-expo);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 0.7s var(--ease-expo), transform 0.7s var(--ease-expo);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s var(--ease-expo), transform 0.6s var(--ease-expo);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Delay classes */
.delay-100 { transition-delay: 100ms !important; }
.delay-150 { transition-delay: 150ms !important; }
.delay-200 { transition-delay: 200ms !important; }
.delay-300 { transition-delay: 300ms !important; }
.delay-400 { transition-delay: 400ms !important; }
.delay-500 { transition-delay: 500ms !important; }
.delay-600 { transition-delay: 600ms !important; }
.delay-700 { transition-delay: 700ms !important; }
.delay-800 { transition-delay: 800ms !important; }

/* Orb animation classes */
.anim-orb-a { animation: float-orb-a 14s ease-in-out infinite; }
.anim-orb-b { animation: float-orb-b 18s ease-in-out infinite; }
.anim-orb-c { animation: float-orb-c 22s ease-in-out infinite; }

/* Floating elements */
.anim-float    { animation: float-card 6s ease-in-out infinite; }
.anim-float-r  { animation: float-card-reverse 8s ease-in-out infinite; }

/* Glow pulses */
.anim-glow-teal { animation: pulse-glow-teal 3s ease-in-out infinite; }
.anim-glow-blue { animation: pulse-glow-blue 3s ease-in-out infinite; }

/* Shimmer text */
.shimmer-text {
  background: linear-gradient(90deg,
    var(--txt-3) 0%,
    var(--txt-1) 30%,
    var(--teal) 50%,
    var(--txt-1) 70%,
    var(--txt-3) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}

/* ============================================================
   HOVER EFFECTS
   ============================================================ */

.hover-lift {
  transition: transform var(--t-base), box-shadow var(--t-base);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-glow-teal {
  transition: box-shadow var(--t-base), border-color var(--t-base);
}
.hover-glow-teal:hover {
  box-shadow: var(--glow-teal);
  border-color: var(--teal-border);
}

.hover-scale {
  transition: transform var(--t-spring);
}
.hover-scale:hover {
  transform: scale(1.03);
}

/* Icon hover rotate */
.hover-icon-spin svg {
  transition: transform var(--t-spring);
}
.hover-icon-spin:hover svg {
  transform: rotate(12deg) scale(1.1);
}

/* ============================================================
   LOADING STATES
   ============================================================ */

.skeleton {
  background: linear-gradient(90deg,
    var(--bg-glass-md) 25%,
    var(--bg-glass-lg) 50%,
    var(--bg-glass-md) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--r-sm);
}

/* ============================================================
   PAGE TRANSITION
   ============================================================ */
.page-enter {
  animation: fade-in-up 0.5s var(--ease-expo) forwards;
}

/* ============================================================
   COUNTER ANIMATION
   ============================================================ */
.counter-animate {
  animation: counter-bounce 0.3s ease-in-out;
}

/* ============================================================
   SCROLL PROGRESS
   ============================================================ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), var(--blue));
  z-index: calc(var(--z-nav) + 1);
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px var(--teal-glow);
}

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

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }
}