/* ============================================
   Animations & Scroll Reveal
   ============================================ */

/* Keyframes */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes expandWidth {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

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

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--transition-smooth),
    transform var(--transition-smooth);
  will-change: opacity, transform;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition:
    opacity var(--transition-smooth),
    transform var(--transition-smooth);
  will-change: opacity, transform;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(24px);
  transition:
    opacity var(--transition-smooth),
    transform var(--transition-smooth);
  will-change: opacity, transform;
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition:
    opacity var(--transition-smooth),
    transform var(--transition-smooth);
  will-change: opacity, transform;
}

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

/* ============================================
   Staggered Children Delays
   ============================================ */

.stagger > .reveal:nth-child(1),
.stagger > .reveal-left:nth-child(1),
.stagger > .reveal-right:nth-child(1) {
  transition-delay: 0ms;
}

.stagger > .reveal:nth-child(2),
.stagger > .reveal-left:nth-child(2),
.stagger > .reveal-right:nth-child(2) {
  transition-delay: 80ms;
}

.stagger > .reveal:nth-child(3),
.stagger > .reveal-left:nth-child(3),
.stagger > .reveal-right:nth-child(3) {
  transition-delay: 160ms;
}

.stagger > .reveal:nth-child(4),
.stagger > .reveal-left:nth-child(4),
.stagger > .reveal-right:nth-child(4) {
  transition-delay: 240ms;
}

.stagger > .reveal:nth-child(5),
.stagger > .reveal-left:nth-child(5),
.stagger > .reveal-right:nth-child(5) {
  transition-delay: 320ms;
}

.stagger > .reveal:nth-child(6),
.stagger > .reveal-left:nth-child(6),
.stagger > .reveal-right:nth-child(6) {
  transition-delay: 400ms;
}

.stagger > .reveal:nth-child(n+7),
.stagger > .reveal-left:nth-child(n+7),
.stagger > .reveal-right:nth-child(n+7) {
  transition-delay: 480ms;
}

/* ============================================
   Separator Line Animation
   ============================================ */

.separator {
  position: relative;
  height: 1px;
  background: transparent;
  margin: var(--space-xl) 0;
  overflow: hidden;
}

.separator::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 1px;
  width: 0;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-separator) 15%,
    var(--accent-blue) 50%,
    var(--color-separator) 85%,
    transparent
  );
  transition: width 800ms cubic-bezier(0.22, 1, 0.36, 1);
}

.separator.visible::after {
  width: 100%;
}

/* ============================================
   Initial Page Load Animation
   ============================================ */

.page-wrapper {
  animation: fadeIn 600ms ease forwards;
}

.hero-section {
  animation: fadeInUp 700ms cubic-bezier(0.22, 1, 0.36, 1) 100ms both;
}

.hero-section .profile-photo {
  animation: scaleIn 600ms cubic-bezier(0.22, 1, 0.36, 1) 300ms both;
}

.hero-section .hero-info {
  animation: slideInRight 600ms cubic-bezier(0.22, 1, 0.36, 1) 400ms both;
}

.hero-section .hero-contact {
  animation: fadeInUp 500ms cubic-bezier(0.22, 1, 0.36, 1) 550ms both;
}

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

.skill-tag {
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.skill-tag:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.job-card {
  transition:
    background-color var(--transition-base),
    box-shadow var(--transition-base);
}

.job-card:hover {
  background-color: var(--bg-hover);
  box-shadow: var(--shadow-md);
}

.link-item {
  transition:
    color var(--transition-fast),
    transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.link-item:hover {
  transform: translateX(3px);
}

/* ============================================
   Download Button Animation
   ============================================ */

.btn-download {
  position: relative;
  overflow: hidden;
  transition:
    background-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn-download::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 30%,
    rgba(255, 255, 255, 0.08) 50%,
    transparent 70%
  );
  transform: translateX(-100%);
  transition: transform 500ms ease;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-download:hover::after {
  transform: translateX(100%);
}

.btn-download:active {
  transform: translateY(0);
}

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

  .separator::after {
    width: 100%;
  }
}