/* ================================================================
   Evident Animation System — World-Class Motion Design
   ================================================================
   
   Principles:
   - Professional restraint — motion serves clarity, not decoration
   - Spring-based easing (cubics that feel physical)
   - Staggerable via CSS custom property --stagger
   - All animations respect prefers-reduced-motion
   - GPU-composited (transform + opacity only)
   
   Usage:
     <div data-animate="fade-up" data-delay="100">
     
   States:
     [data-animate] — hidden (pre-animation)
     [data-animate].is-visible — visible (post-animation)
   ================================================================ */

/* ── Spring Easing Library ──────────────────────────────────── */
:root {
  --ease-spring: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring-heavy: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-decel: cubic-bezier(0, 0, 0.3, 1);
  --ease-accel: cubic-bezier(0.8, 0, 1, 1);
}

/* ── Keyframes ──────────────────────────────────────────────── */

@keyframes ev-fade-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ev-fade-down {
  from {
    opacity: 0;
    transform: translateY(-18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ev-fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes ev-scale-in {
  from {
    opacity: 0;
    transform: scale(0.92);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes ev-slide-left {
  from {
    opacity: 0;
    transform: translateX(24px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes ev-slide-right {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes ev-blur-in {
  from {
    opacity: 0;
    filter: blur(6px);
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }
}

@keyframes ev-count-pulse {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.15);
  }

  100% {
    transform: scale(1);
  }
}

/* Continuous — for loading/active states */
@keyframes ev-shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

@keyframes ev-orbit {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes ev-pulse-ring {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }

  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

@keyframes ev-glow-breathe {
  0%,
  100% {
    box-shadow: 0 0 0 0 var(--glow-color, rgb(31 58 153 / 0%));
  }

  50% {
    box-shadow: 0 0 24px 4px var(--glow-color, rgb(31 58 153 / 20%));
  }
}

@keyframes ev-slide-in-overlay {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes ev-progress-indeterminate {
  0% {
    transform: translateX(-100%);
  }

  100% {
    transform: translateX(300%);
  }
}

@keyframes ev-hero-text-reveal {
  from {
    opacity: 0;
    transform: translateY(40px);
    filter: blur(4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes ev-stagger-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ev-badge-pop {
  0% {
    transform: scale(0.6);
    opacity: 0;
  }

  60% {
    transform: scale(1.08);
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes ev-number-tick {
  from {
    transform: translateY(100%);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ── Scroll-reveal hidden states ────────────────────────────── */

[data-animate] {
  opacity: 0;
  will-change: transform, opacity;
}

[data-animate="fade-up"] {
  transform: translateY(18px);
}

[data-animate="fade-down"] {
  transform: translateY(-18px);
}

[data-animate="scale-in"] {
  transform: scale(0.92);
}

[data-animate="slide-left"] {
  transform: translateX(24px);
}

[data-animate="slide-right"] {
  transform: translateX(-24px);
}

[data-animate="blur-in"] {
  filter: blur(6px);
  transform: translateY(10px);
}

/* ── Scroll-reveal visible states ───────────────────────────── */

[data-animate="fade-up"].is-visible {
  animation: ev-fade-up 600ms var(--ease-spring) forwards;
  animation-delay: var(--stagger, 0ms);
}

[data-animate="fade-down"].is-visible {
  animation: ev-fade-down 600ms var(--ease-spring) forwards;
  animation-delay: var(--stagger, 0ms);
}

[data-animate="fade-in"].is-visible {
  animation: ev-fade-in 500ms var(--ease-smooth) forwards;
  animation-delay: var(--stagger, 0ms);
}

[data-animate="scale-in"].is-visible {
  animation: ev-scale-in 500ms var(--ease-spring) forwards;
  animation-delay: var(--stagger, 0ms);
}

[data-animate="slide-left"].is-visible {
  animation: ev-slide-left 600ms var(--ease-spring) forwards;
  animation-delay: var(--stagger, 0ms);
}

[data-animate="slide-right"].is-visible {
  animation: ev-slide-right 600ms var(--ease-spring) forwards;
  animation-delay: var(--stagger, 0ms);
}

[data-animate="blur-in"].is-visible {
  animation: ev-blur-in 700ms var(--ease-spring) forwards;
  animation-delay: var(--stagger, 0ms);
}

/* ── Utility animation classes ──────────────────────────────── */

.ev-shimmer {
  background: linear-gradient(90deg, transparent 0%, rgb(255 255 255 / 12%) 50%, transparent 100%);
  background-size: 200% 100%;
  animation: ev-shimmer 2s linear infinite;
}

.ev-pulse-ring {
  position: relative;
}

.ev-pulse-ring::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  border: 2px solid var(--glow-color, var(--color-primary, #1f3a99));
  animation: ev-pulse-ring 1.5s var(--ease-decel) infinite;
  pointer-events: none;
}

.ev-glow {
  animation: ev-glow-breathe 3s ease-in-out infinite;
}

.ev-badge-enter {
  animation: ev-badge-pop 400ms var(--ease-spring-bounce) forwards;
}

/* ── Interactive transitions (hover, focus, active) ────────── */

.ev-lift {
  transition:
    transform 300ms var(--ease-spring),
    box-shadow 300ms var(--ease-spring);
}

.ev-lift:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg, 0 12px 40px rgb(14 21 40 / 10%));
}

.ev-lift:active {
  transform: translateY(-1px);
  transition-duration: 100ms;
}

.ev-grow {
  transition: transform 250ms var(--ease-spring);
}

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

.ev-grow:active {
  transform: scale(0.98);
  transition-duration: 100ms;
}

.ev-border-glow {
  transition:
    border-color 200ms ease,
    box-shadow 200ms ease;
}

.ev-border-glow:hover {
  border-color: var(--color-primary, #1f3a99);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary, #1f3a99) 15%, transparent);
}

/* ── Stagger helper (auto-increment children) ───────────────── */

.ev-stagger > * {
  --stagger: calc(var(--stagger-base, 60ms) * var(--i, 0));
}

.ev-stagger > :nth-child(1) {
  --i: 0;
}

.ev-stagger > :nth-child(2) {
  --i: 1;
}

.ev-stagger > :nth-child(3) {
  --i: 2;
}

.ev-stagger > :nth-child(4) {
  --i: 3;
}

.ev-stagger > :nth-child(5) {
  --i: 4;
}

.ev-stagger > :nth-child(6) {
  --i: 5;
}

.ev-stagger > :nth-child(7) {
  --i: 6;
}

.ev-stagger > :nth-child(8) {
  --i: 7;
}

.ev-stagger > :nth-child(9) {
  --i: 8;
}

.ev-stagger > :nth-child(10) {
  --i: 9;
}

.ev-stagger > :nth-child(11) {
  --i: 10;
}

.ev-stagger > :nth-child(12) {
  --i: 11;
}

/* ── Depth System Animations ──────────────────────────────────── */

@keyframes ev-star-twinkle {
  0%,
  100% {
    opacity: 0.4;
  }
  50% {
    opacity: 0.9;
  }
}

@keyframes ev-shooting-star {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) rotate(0deg) scaleX(0.35);
  }
  4% {
    opacity: 0.95;
  }
  14% {
    opacity: 0.75;
  }
  24% {
    opacity: 0;
    transform: translate3d(var(--shooting-star-travel-x, 26vw), var(--shooting-star-travel-y, 18vh), 0) rotate(0deg) scaleX(1);
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--shooting-star-travel-x, 26vw), var(--shooting-star-travel-y, 18vh), 0) rotate(0deg) scaleX(1);
  }
}

@keyframes ev-nebula-drift {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 5% 3%;
  }
}

@keyframes ev-nebula-drift-reverse {
  0% {
    background-position: 100% 100%;
  }
  100% {
    background-position: 95% 97%;
  }
}

@keyframes ev-planet-glow {
  0%,
  100% {
    box-shadow:
      0 0 calc(var(--depth-planet-size, 600px) * 0.3) calc(var(--depth-planet-size, 600px) * 0.15) rgb(45 120 255 / 10%),
      inset 0 0 calc(var(--depth-planet-size, 600px) * 0.2) calc(var(--depth-planet-size, 600px) * 0.1) rgb(0 0 0 / 50%);
  }
  50% {
    box-shadow:
      0 0 calc(var(--depth-planet-size, 600px) * 0.35) calc(var(--depth-planet-size, 600px) * 0.18) rgb(45 120 255 / 16%),
      0 0 calc(var(--depth-planet-size, 600px) * 0.6) calc(var(--depth-planet-size, 600px) * 0.3) rgb(45 120 255 / 6%),
      inset 0 0 calc(var(--depth-planet-size, 600px) * 0.2) calc(var(--depth-planet-size, 600px) * 0.1) rgb(0 0 0 / 50%);
  }
}

@keyframes ev-planet-surface-rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes ev-meridian-rotate {
  from {
    transform: translateX(-50%) rotate(0deg);
  }
  to {
    transform: translateX(-50%) rotate(360deg);
  }
}

@keyframes ev-meridian-rotate-reverse {
  from {
    transform: translateX(-50%) rotate(0deg);
  }
  to {
    transform: translateX(-50%) rotate(-360deg);
  }
}

@keyframes ev-beam-pulse {
  0%,
  100% {
    opacity: 0.06;
  }
  50% {
    opacity: 0.14;
  }
}

@keyframes ev-node-pulse {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }
  100% {
    transform: scale(2.5);
    opacity: 0;
  }
}

@keyframes ev-geometry-rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes ev-geometry-rotate-reverse {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(-360deg);
  }
}

@keyframes ev-cta-glow {
  0%,
  100% {
    box-shadow:
      0 0 0 0 rgb(247 179 43 / 0%),
      0 14px 34px rgb(31 58 153 / 42%),
      0 0 28px rgb(247 179 43 / 12%);
  }
  50% {
    box-shadow:
      0 0 0 4px rgb(247 179 43 / 10%),
      0 14px 34px rgb(31 58 153 / 42%),
      0 0 36px rgb(247 179 43 / 18%);
  }
}

@keyframes ev-text-shimmer {
  0%,
  100% {
    background-position: 200% center;
  }
  50% {
    background-position: -200% center;
  }
}

@keyframes ev-mesh-drift {
  0% {
    --mesh-x1: 20%;
    --mesh-y1: 30%;
    --mesh-x2: 80%;
    --mesh-y2: 20%;
    --mesh-x3: 60%;
    --mesh-y3: 80%;
    --mesh-x4: 30%;
    --mesh-y4: 70%;
  }
  33% {
    --mesh-x1: 25%;
    --mesh-y1: 35%;
    --mesh-x2: 75%;
    --mesh-y2: 25%;
    --mesh-x3: 55%;
    --mesh-y3: 75%;
    --mesh-x4: 35%;
    --mesh-y4: 65%;
  }
  66% {
    --mesh-x1: 15%;
    --mesh-y1: 25%;
    --mesh-x2: 85%;
    --mesh-y2: 15%;
    --mesh-x3: 65%;
    --mesh-y3: 85%;
    --mesh-x4: 25%;
    --mesh-y4: 75%;
  }
  100% {
    --mesh-x1: 30%;
    --mesh-y1: 40%;
    --mesh-x2: 70%;
    --mesh-y2: 30%;
    --mesh-x3: 50%;
    --mesh-y3: 70%;
    --mesh-x4: 40%;
    --mesh-y4: 60%;
  }
}

@keyframes ev-border-sweep {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 0% 200%;
  }
}

/* ── Page transition ────────────────────────────────────────── */

.ev-page-enter {
  animation: ev-fade-up 500ms var(--ease-spring) forwards;
}

/* ── Scroll Progress Indicator ──────────────────────────────── */

/* Thin gold bar at top of viewport showing scroll depth.
   Uses scroll-driven animation (Chromium 115+, graceful no-op elsewhere). */

@keyframes ev-scroll-progress {
  from {
    transform: scaleX(0);
  }

  to {
    transform: scaleX(1);
  }
}

.ev-scroll-progress {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 1000;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary, #1f3a99), var(--color-accent, #c88c00));
  transform-origin: left;
  transform: scaleX(0);
  animation: ev-scroll-progress linear both;
  animation-timeline: scroll(root);
  pointer-events: none;
}

/* ── Focus-ring pulse for interactive elements ──────────────── */
@keyframes ev-focus-pulse {
  0% {
    box-shadow: 0 0 0 0 rgb(247 179 43 / 30%);
  }

  70% {
    box-shadow: 0 0 0 6px rgb(247 179 43 / 0%);
  }

  100% {
    box-shadow: 0 0 0 0 rgb(247 179 43 / 0%);
  }
}

.ev-stage-card:focus-visible,
.ev-pricing-card:focus-visible {
  animation: ev-focus-pulse 800ms ease-out;
}

/* ── Smooth card group stagger (counter-based) ──────────────── */

/* More elegant than nth-child: driven by CSS counter + custom property */

.ev-stagger-smooth {
  counter-reset: stagger-idx;
}

.ev-stagger-smooth > * {
  counter-increment: stagger-idx;

  --stagger: calc(60ms * var(--i, 0));

  animation-delay: var(--stagger);
}

/* ── Reduced Motion — disable all animation ─────────────────── */

@media (prefers-reduced-motion: reduce) {
  [data-animate],
  [data-animate].is-visible {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    animation: none !important;
  }

  .ev-scroll-progress {
    animation: none;
    transform: scaleX(0);
    display: none;
  }

  .ev-stage-card:focus-visible,
  .ev-pricing-card:focus-visible {
    animation: none;
  }

  .ev-lift:hover,
  .ev-grow:hover {
    transform: none;
  }

  .ev-shimmer,
  .ev-pulse-ring::after,
  .ev-glow {
    animation: none;
  }
}