/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Custom scrollbar for chat */
#chatboxMessages::-webkit-scrollbar {
  width: 4px;
}

#chatboxMessages::-webkit-scrollbar-track {
  background: transparent;
}

#chatboxMessages::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 4px;
}

#chatboxMessages::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

/* Slider overflow */
.slider {
  min-width: 100%;
}

.slider img {
  min-width: 100%;
  flex-shrink: 0;
}

/* ==========================================
   SCROLL REVEAL ANIMATION SYSTEM
   ========================================== */
.reveal {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.fade-up {
  transform: translateY(40px);
}

.reveal.fade-down {
  transform: translateY(-40px);
}

.reveal.fade-left {
  transform: translateX(-60px);
}

.reveal.fade-right {
  transform: translateX(60px);
}

.reveal.fade-scale {
  transform: scale(0.9);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger delays */
.reveal.delay-1 { transition-delay: 0.15s; }
.reveal.delay-2 { transition-delay: 0.3s; }
.reveal.delay-3 { transition-delay: 0.45s; }
.reveal.delay-4 { transition-delay: 0.6s; }

/* ==========================================
   PARTICLE CANVAS
   ========================================== */
#particleCanvas {
  opacity: 0.6;
}

/* ==========================================
   TIMELINE ANIMATIONS (Work Experience)
   ========================================== */
.timeline-line {
  background: linear-gradient(to bottom, transparent, #d1d5db 10%, #d1d5db 90%, transparent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-line.active {
  transform: scaleY(1);
}

/* Timeline dot pulse on reveal */
.timeline-dot {
  transform: scale(0);
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.timeline-dot.active {
  transform: scale(1);
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  50% { box-shadow: 0 0 0 12px rgba(16, 185, 129, 0); }
}

.timeline-dot[data-color="emerald"].active {
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulseBlue {
  0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
  50% { box-shadow: 0 0 0 12px rgba(59, 130, 246, 0); }
}

.timeline-dot[data-color="blue"].active {
  animation: dotPulseBlue 2s ease-in-out 0.3s infinite;
}

@keyframes dotPulseAmber {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4); }
  50% { box-shadow: 0 0 0 12px rgba(245, 158, 11, 0); }
}

.timeline-dot[data-color="amber"].active {
  animation: dotPulseAmber 2s ease-in-out 0.6s infinite;
}

/* Experience card hover - show skill tags */
.exp-card:hover .exp-skills {
  opacity: 1;
  max-height: 100px;
  margin-top: 1rem;
}

/* Staggered list items reveal */
.exp-list-item {
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.exp-entry.reveal.active .exp-list-item {
  opacity: 1;
  transform: translateX(0);
}

.exp-entry.reveal.active .exp-list-item:nth-child(1) { transition-delay: 0.2s; }
.exp-entry.reveal.active .exp-list-item:nth-child(2) { transition-delay: 0.35s; }
.exp-entry.reveal.active .exp-list-item:nth-child(3) { transition-delay: 0.5s; }
.exp-entry.reveal.active .exp-list-item:nth-child(4) { transition-delay: 0.65s; }
.exp-entry.reveal.active .exp-list-item:nth-child(5) { transition-delay: 0.8s; }

/* Badge bounce on reveal */
.exp-badge {
  animation: none;
}

.exp-entry.reveal.active .exp-badge {
  animation: badgeBounce 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.3s both;
}

@keyframes badgeBounce {
  0% { transform: scale(0); }
  100% { transform: scale(1); }
}

/* ==========================================
   PROJECT MODAL
   ========================================== */
#projectModal.open {
  opacity: 1;
  pointer-events: auto;
}

#projectModal.open #projectModalContent {
  transform: scale(1);
}

/* Prevent body scroll when modal is open */
body.modal-open {
  overflow: hidden;
}

/* ==========================================
   PROJECT CARD HOVER EFFECTS
   ========================================== */
.project-card {
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(168, 85, 247, 0.03) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.project-card:hover::after {
  opacity: 1;
}

/* ==========================================
   NAV LINK HOVER ANIMATION
   ========================================== */
header nav a {
  position: relative;
}

header nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2px;
  background: currentColor;
  transition: width 0.3s ease;
}

header nav a:hover::after {
  width: 100%;
}

header nav a.nav-active::after {
  width: 100%;
}

/* ==========================================
   MICRO ANIMATIONS
   ========================================== */

/* Magnetic hover effect on social buttons */
.group.p-3 {
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.group.p-3:hover {
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

/* Stat counter animation */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.stat-animate {
  animation: countUp 0.6s ease-out forwards;
}

/* Floating animation for Luna icon */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.luna-float {
  animation: float 3s ease-in-out infinite;
}

/* Text gradient shimmer for hero */
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

/* Smooth entrance for form fields */
#contact form > * {
  opacity: 0;
  transform: translateY(20px);
}

#contact form.form-revealed > * {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

#contact form.form-revealed > *:nth-child(1) { transition-delay: 0.1s; }
#contact form.form-revealed > *:nth-child(2) { transition-delay: 0.2s; }
#contact form.form-revealed > *:nth-child(3) { transition-delay: 0.3s; }

/* Research stats number animation */
.research-stat {
  display: inline-block;
}

/* Smooth scrollbar for the whole page */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}