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

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(2);
  }
}

@keyframes scrollLine {
  0% {
    transform: scaleY(0);
    transform-origin: top;
    opacity: 0;
  }
  50% {
    opacity: 0.8;
  }
  100% {
    transform: scaleY(1);
    transform-origin: top;
    opacity: 0;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-60px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(60px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(60px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes heroEntrance {
  0% {
    opacity: 0;
    transform: translateY(60px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes floatKanji {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  25% {
    transform: translateY(-30px) rotate(2deg);
  }
  50% {
    transform: translateY(-10px) rotate(-1deg);
  }
  75% {
    transform: translateY(-20px) rotate(1deg);
  }
}

@keyframes glowPulse {
  0%,
  100% {
    box-shadow:
      0 0 10px rgba(139, 92, 246, 0.2),
      0 0 30px rgba(139, 92, 246, 0.05);
  }
  50% {
    box-shadow:
      0 0 20px rgba(139, 92, 246, 0.4),
      0 0 60px rgba(139, 92, 246, 0.1);
  }
}

@keyframes sparkleFade {
  0% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  100% {
    opacity: 0;
    transform: scale(0) translateY(-40px);
  }
}

@keyframes rotateGradient {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes skillShine {
  0% {
    left: -100%;
  }
  100% {
    left: 200%;
  }
}

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

@keyframes neonFlicker {
  0%,
  100% {
    opacity: 1;
  }
  92% {
    opacity: 1;
  }
  93% {
    opacity: 0.2;
  }
  94% {
    opacity: 0.8;
  }
  96% {
    opacity: 0.1;
  }
  97% {
    opacity: 0.7;
  }
  98% {
    opacity: 0.2;
  }
}

@keyframes tiltShake {
  0%,
  100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(1deg);
  }
  50% {
    transform: rotate(-1deg);
  }
  75% {
    transform: rotate(0.5deg);
  }
}

/* ========== SCROLL REVEAL ========== */
.reveal {
  opacity: 0;
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
}

.reveal-fade-up {
  opacity: 0;
  transform: translateY(60px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-fade-down {
  opacity: 0;
  transform: translateY(-40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-fade-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-fade-right {
  opacity: 0;
  transform: translateX(60px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.85);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.delay-100 {
  transition-delay: 0.1s;
}
.delay-200 {
  transition-delay: 0.2s;
}
.delay-300 {
  transition-delay: 0.3s;
}
.delay-400 {
  transition-delay: 0.4s;
}
.delay-500 {
  transition-delay: 0.5s;
}
.delay-600 {
  transition-delay: 0.6s;
}
.delay-700 {
  transition-delay: 0.7s;
}

.stagger-children > * {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.stagger-children.visible > *:nth-child(1) {
  transition-delay: 0s;
}
.stagger-children.visible > *:nth-child(2) {
  transition-delay: 0.1s;
}
.stagger-children.visible > *:nth-child(3) {
  transition-delay: 0.2s;
}
.stagger-children.visible > *:nth-child(4) {
  transition-delay: 0.3s;
}
.stagger-children.visible > *:nth-child(5) {
  transition-delay: 0.4s;
}
.stagger-children.visible > *:nth-child(6) {
  transition-delay: 0.5s;
}
.stagger-children.visible > *:nth-child(7) {
  transition-delay: 0.6s;
}
.stagger-children.visible > *:nth-child(8) {
  transition-delay: 0.7s;
}

/* ========== HERO ENTRANCE ========== */
.hero-content > * {
  opacity: 0;
  animation: heroEntrance 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.hero-content > *:nth-child(1) {
  animation-delay: 0.2s;
}
.hero-content > *:nth-child(2) {
  animation-delay: 0.4s;
}
.hero-content > *:nth-child(3) {
  animation-delay: 0.6s;
}
.hero-content > *:nth-child(4) {
  animation-delay: 0.8s;
}
.hero-content > *:nth-child(5) {
  animation-delay: 1s;
}

/* ========== TIMELINE ========== */
.timeline-item {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-item.visible:nth-child(1) {
  transition-delay: 0s;
}
.timeline-item.visible:nth-child(2) {
  transition-delay: 0.15s;
}
.timeline-item.visible:nth-child(3) {
  transition-delay: 0.3s;
}
.timeline-item.visible:nth-child(4) {
  transition-delay: 0.45s;
}
.timeline-item.visible:nth-child(5) {
  transition-delay: 0.6s;
}

/* ========== SHIMMER ========== */
.shimmer {
  background: linear-gradient(
    90deg,
    var(--bg-card) 0%,
    var(--bg-card-hover) 50%,
    var(--bg-card) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

/* ========== SCROLL PROGRESS ========== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--primary);
  z-index: 1001;
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
}

/* ========== NAV LINK ACTIVE ========== */
.nav-links a {
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transform: translateX(-50%);
  transition: width var(--transition-base);
  border-radius: 1px;
  box-shadow: 0 0 6px rgba(139, 92, 246, 0.4);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 60%;
}

/* ========== BUTTON SHINE ========== */
.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.6s;
}

.btn-primary:hover::before {
  left: 100%;
}

/* ========== 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,
  .reveal-fade-up,
  .reveal-fade-left,
  .reveal-fade-right,
  .reveal-scale,
  .timeline-item {
    opacity: 1;
    transform: none;
  }

  .stagger-children > * {
    opacity: 1;
    transform: none;
  }

  .skill-bar-fill {
    width: var(--skill-width) !important;
  }
}