/* ==========================================================================
   ANIMATIONS — Keyframes, Scroll Reveals, Transitions
   ========================================================================== */

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

/* Fade In Up (primary scroll reveal) */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade In Down */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade In Left */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Fade In Right */
@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Fade In Scale */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Floating shape animation */
@keyframes float-shape {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(30px, -30px) rotate(5deg);
  }
  50% {
    transform: translate(-20px, 20px) rotate(-3deg);
  }
  75% {
    transform: translate(10px, -10px) rotate(2deg);
  }
}

/* Float pulse for CTA button */
@keyframes float-pulse {
  0%, 100% {
    transform: translateY(0);
    box-shadow: 0 8px 32px rgba(27, 95, 192, 0.35);
  }
  50% {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(27, 95, 192, 0.45);
  }
}

/* Pulse dot */
@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.4);
  }
}

/* Marquee */
@keyframes marquee {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Spin */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

/* Aurora fallback — used when WebGL is unavailable */
@keyframes aurora-drift {
  0%   { background-position: 0% 50%; }
  25%  { background-position: 50% 0%; }
  50%  { background-position: 100% 50%; }
  75%  { background-position: 50% 100%; }
  100% { background-position: 0% 50%; }
}

.hero__canvas-wrapper--fallback {
  background: linear-gradient(
    135deg,
    var(--brand-50) 0%,
    var(--brand-200) 25%,
    var(--brand-400) 50%,
    var(--brand-500) 75%,
    var(--brand-200) 100%
  );
  background-size: 400% 400%;
  animation: aurora-drift 20s ease infinite;
}

[data-theme="dark"] .hero__canvas-wrapper--fallback {
  background: linear-gradient(
    135deg,
    var(--brand-950) 0%,
    var(--brand-800) 25%,
    var(--brand-400) 50%,
    var(--accent-cyan-400) 75%,
    var(--brand-800) 100%
  );
}

/* Counter tick */
@keyframes counter-tick {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(-2px); }
  100% { transform: translateY(0); }
}

/* Shimmer (loading state) */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Glow ring */
@keyframes glow-ring {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(27, 95, 192, 0.4);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(27, 95, 192, 0);
  }
}

/* Slide in from right (mobile nav) */
@keyframes slideInRight {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

/* Stagger children */
@keyframes staggerFadeIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   SCROLL REVEAL CLASSES
   ========================================================================== */

/* Base reveal — elements start hidden, become visible when observed */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out),
              transform 0.7s var(--ease-out);
}

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

/* Directional reveals */
.reveal--left {
  transform: translateX(-30px);
}

.reveal--left.is-visible {
  transform: translateX(0);
}

.reveal--right {
  transform: translateX(30px);
}

.reveal--right.is-visible {
  transform: translateX(0);
}

.reveal--scale {
  transform: scale(0.92);
}

.reveal--scale.is-visible {
  transform: scale(1);
}

/* Staggered reveals for grid items */
.reveal--stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

.reveal--stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal--stagger.is-visible > *:nth-child(2) { transition-delay: 100ms; }
.reveal--stagger.is-visible > *:nth-child(3) { transition-delay: 200ms; }
.reveal--stagger.is-visible > *:nth-child(4) { transition-delay: 300ms; }
.reveal--stagger.is-visible > *:nth-child(5) { transition-delay: 400ms; }
.reveal--stagger.is-visible > *:nth-child(6) { transition-delay: 500ms; }
.reveal--stagger.is-visible > *:nth-child(7) { transition-delay: 600ms; }
.reveal--stagger.is-visible > *:nth-child(8) { transition-delay: 700ms; }

.reveal--stagger.is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* Delay modifiers */
.reveal--delay-1 { transition-delay: 100ms; }
.reveal--delay-2 { transition-delay: 200ms; }
.reveal--delay-3 { transition-delay: 300ms; }
.reveal--delay-4 { transition-delay: 400ms; }

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

/* Card lift */
.hover-lift {
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

/* Glow on hover */
.hover-glow {
  transition: box-shadow var(--duration-normal) var(--ease-out);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* Scale on hover */
.hover-scale {
  transition: transform var(--duration-normal) var(--ease-spring);
}

.hover-scale:hover {
  transform: scale(1.03);
}

/* ==========================================================================
   PARALLAX
   ========================================================================== */
.parallax {
  will-change: transform;
}

/* ==========================================================================
   PAGE TRANSITION
   ========================================================================== */
.page-transition {
  animation: fadeInUp 0.5s var(--ease-out);
}

/* ==========================================================================
   LOADING STATE
   ========================================================================== */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero__floating-shape {
    animation: none;
  }

  .marquee__track {
    animation: none;
  }

  .floating-cta__btn {
    animation: none;
  }
}