/* Animations */

/* === Keyframes === */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeLeft {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeRight {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px var(--glow-primary);
  }
  50% {
    box-shadow: 0 0 40px var(--glow-primary-strong);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

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

/* === Scroll Reveal States === */

/* Initial hidden state for scroll animations */
[data-reveal] {
  opacity: 0;
  transition:
    opacity var(--duration-slower) var(--ease-out),
    transform var(--duration-slower) var(--ease-out);
}

[data-reveal="up"] {
  transform: translateY(30px);
}

[data-reveal="down"] {
  transform: translateY(-30px);
}

[data-reveal="left"] {
  transform: translateX(30px);
}

[data-reveal="right"] {
  transform: translateX(-30px);
}

[data-reveal="scale"] {
  transform: scale(0.95);
}

[data-reveal="fade"] {
  transform: none;
}

/* Revealed state */
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger delays for children */
[data-stagger] > * {
  transition-delay: calc(var(--stagger-index, 0) * 100ms);
}

[data-stagger="fast"] > * {
  transition-delay: calc(var(--stagger-index, 0) * 50ms);
}

[data-stagger="slow"] > * {
  transition-delay: calc(var(--stagger-index, 0) * 150ms);
}

/* === Hero Animations === */

.hero [data-reveal] {
  --duration-slower: 800ms;
}

.hero-badge {
  animation: fadeDown 600ms var(--ease-out) 200ms both;
}

.hero h1 {
  animation: fadeUp 800ms var(--ease-out) 400ms both;
}

.hero-subtitle {
  animation: fadeUp 800ms var(--ease-out) 600ms both;
}

.hero-cta {
  animation: fadeUp 800ms var(--ease-out) 800ms both;
}

.hero-gradient {
  animation: float 8s ease-in-out infinite;
}

.hero-gradient-2 {
  animation-delay: -4s;
}

/* === Hover Effects === */

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

/* Button press effect */
.btn {
  transition:
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out);
}

.btn:active {
  transform: scale(0.98);
}

/* Link underline animation */
.link-animated {
  position: relative;
}

.link-animated::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary);
  transition: width var(--duration-normal) var(--ease-out);
}

.link-animated:hover::after {
  width: 100%;
}

/* Icon rotation on hover */
.icon-rotate:hover svg {
  transform: rotate(15deg);
  transition: transform var(--duration-normal) var(--ease-out);
}

/* === Loading States === */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface-card) 25%,
    var(--surface-card-hover) 50%,
    var(--surface-card) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--rounded-md);
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--hairline);
  border-top-color: var(--primary);
  border-radius: var(--rounded-full);
  animation: rotate 0.8s linear infinite;
}

/* === Reduced Motion === */

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

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .hero-badge,
  .hero h1,
  .hero-subtitle,
  .hero-cta {
    animation: none;
    opacity: 1;
  }
}

/* === Page Transitions === */

.page-enter {
  animation: fadeIn var(--duration-slow) var(--ease-out);
}

/* === Interactive Highlights === */

/* Glow border on focus/hover for interactive cards */
.card-interactive {
  position: relative;
}

.card-interactive::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--primary) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
  z-index: -1;
}

.card-interactive:hover::before {
  opacity: 1;
}

/* Number counter animation helper class */
.count-up {
  display: inline-block;
}

/* Text reveal word by word */
.text-reveal {
  opacity: 0;
}

.text-reveal.revealed {
  opacity: 1;
}

.text-reveal .word {
  display: inline-block;
  opacity: 0;
  transform: translateY(10px);
  transition: all 400ms var(--ease-out);
}

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