/* Base Styles and Utilities */
:root {
  --nav-height: 80px;
}

html {
  scroll-padding-top: calc(var(--nav-height) + 2rem);
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

body::-webkit-scrollbar {
  width: 8px;
}

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

body::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 20px;
}

body::-webkit-scrollbar-thumb:hover {
  background-color: rgba(255, 255, 255, 0.3);
}

/* Backgrounds */
.grid-bg {
  background-size: 50px 50px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}

.noise-bg {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.02;
  mix-blend-mode: overlay;
}

/* Glassmorphism Classes */
.glass-panel {
  background: rgba(15, 15, 15, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  transform: translateZ(0);
}

.glass-nav {
  background: rgba(10, 10, 10, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.glass-nav.scrolled {
  background: rgba(5, 5, 5, 0.85);
  border-color: rgba(255, 255, 255, 0.12);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

/* Text Gradients */
.text-gradient {
  background: linear-gradient(to right, #ffffff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}



/* Animations */
.animation-delay-2000 {
  animation-delay: 2s;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

/* Nav Link Hover Effect */
.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 50%;
  background-color: #8b5cf6;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Neon Glow Cursor */
body {
  cursor: none;
}

/* Animated Cursor Colors */
@keyframes cursorColorCycle {
  0%, 100% { background: #8b5cf6; } /* Purple */
  33% { background: #3b82f6; } /* Blue */
  66% { background: #ec4899; } /* Pink */
}

@keyframes cursorGlowColorCycle {
  0%, 100% { 
    border-color: #8b5cf6; 
    box-shadow: 0 0 15px #8b5cf6, 0 0 30px rgba(139, 92, 246, 0.6); 
  }
  33% { 
    border-color: #3b82f6; 
    box-shadow: 0 0 15px #3b82f6, 0 0 30px rgba(59, 130, 246, 0.6); 
  }
  66% { 
    border-color: #ec4899; 
    box-shadow: 0 0 15px #ec4899, 0 0 30px rgba(236, 72, 153, 0.6); 
  }
}

.cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 12px;
  height: 12px;
  background: #8b5cf6;
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  will-change: transform;
  animation: cursorColorCycle 5s infinite ease-in-out;
}

.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid #8b5cf6;
  box-shadow: 0 0 15px #8b5cf6, 0 0 30px #7c3aed;
  pointer-events: none;
  z-index: 99998;
  will-change: transform;
  transition: width 0.15s ease-out, height 0.15s ease-out;
  animation: cursorGlowColorCycle 5s infinite ease-in-out;
}

/* Hover Animation (Button or Link) */
a:hover ~ .cursor-glow,
button:hover ~ .cursor-glow,
.interactive:hover ~ .cursor-glow {
  width: 60px;
  height: 60px;
}

/* 3D Jump Animation for Location Pin */
@keyframes jump-3d {
  0%, 100% {
    transform: translateY(0) scale(1) rotate(0deg);
  }
  30% {
    transform: translateY(-8px) scale(1.1) rotate(-5deg);
  }
  50% {
    transform: translateY(-12px) scale(1.15) rotate(5deg);
  }
  70% {
    transform: translateY(-6px) scale(1.05) rotate(-3deg);
  }
}

.animate-3d-jump {
  animation: jump-3d 1.5s ease-in-out infinite;
  display: inline-block;
}

/* Beautiful Article Viewer Modal */
.article-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.85);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  backdrop-filter: blur(5px);
}

.article-box {
  background: #0f0f0f;
  padding: 40px;
  border-radius: 16px;
  max-width: 900px;
  width: 90%;
  border: 1px solid #333;
  box-shadow: 0 0 30px rgba(124,58,237,0.3);
  animation: fadeIn 0.3s ease;
  position: relative;
  max-height: 80vh;
  overflow-y: auto;
}

.article-box h2 {
  color: #fff;
  margin-bottom: 5px;
  font-size: 1.8rem;
  font-weight: bold;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  color: #888;
  font-size: 0.9rem;
  margin-bottom: 25px;
  padding-bottom: 20px;
  border-bottom: 1px solid #333;
}

.article-box p {
  color: #cfcfcf;
  line-height: 1.8;
  font-size: 16px;
  margin-top: 15px;
  white-space: pre-wrap;
}

.article-actions {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #333;
  display: flex;
  justify-content: flex-end;
}

.close-btn {
  position: absolute;
  top: 15px;
  right: 25px;
  font-size: 32px;
  cursor: pointer;
  color: #aaa;
  transition: color 0.3s ease;
}

.close-btn:hover {
  color: #fff;
}

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

/* Space Background (Nebula + Stars) */
.space-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -3; /* Placed behind grid */
  background: #040404;
}

/* Nebula Glow */
.nebula::before,
.nebula::after {
  content: "";
  position: absolute;
  width: 1000px;
  height: 1000px;
  border-radius: 50%;
  opacity: 0.5;
  will-change: transform;
  animation: nebulaMove 30s infinite alternate;
}

.nebula::before {
  background: radial-gradient(circle, rgba(124, 58, 237, 0.4) 0%, transparent 60%);
  top: -200px;
  left: -200px;
}

.nebula::after {
  background: radial-gradient(circle, rgba(0, 234, 255, 0.3) 0%, transparent 60%);
  bottom: -200px;
  right: -200px;
  animation-duration: 35s;
}

@keyframes nebulaMove {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(200px, -150px) scale(1.2); }
}

/* Stars Background */
.stars {
  position: absolute;
  width: 100%;
  height: 100%;
  background: transparent;
}

.stars::before {
  content: "";
  position: absolute;
  width: 2px;
  height: 2px;
  background: white;
  box-shadow: 
    200px 100px white,
    400px 200px white,
    600px 300px white,
    800px 150px white,
    1000px 250px white,
    1200px 100px white,
    1400px 350px white;
}

/* Shooting Stars Animation */
.shooting-star {
  position: absolute;
  width: 3px;
  height: 80px;
  background: linear-gradient(white, transparent);
  opacity: 0.8;
  transform: rotate(45deg);
  animation: shoot 5s linear infinite;
}

@keyframes shoot {
  0% {
    transform: translateX(-200px) translateY(-200px) rotate(45deg);
    opacity: 1;
  }
  100% {
    transform: translateX(1200px) translateY(800px) rotate(45deg);
    opacity: 0;
  }
}

/* Timeline Glow Animations */

/* Active / Current (Strong Radiant Glow) */
@keyframes timelinePulseActive {
  0% { box-shadow: 0 0 15px 2px rgba(168, 85, 247, 0.8), 0 0 30px 10px rgba(168, 85, 247, 0.4) !important; border-color: rgba(168, 85, 247, 1) !important; }
  50% { box-shadow: 0 0 25px 5px rgba(168, 85, 247, 1), 0 0 60px 15px rgba(168, 85, 247, 0.6) !important; border-color: #d8b4fe !important; }
  100% { box-shadow: 0 0 15px 2px rgba(168, 85, 247, 0.8), 0 0 30px 10px rgba(168, 85, 247, 0.4) !important; border-color: rgba(168, 85, 247, 1) !important; }
}

/* Purple Standard (Soft Past Experience) */
@keyframes timelinePulsePurple {
  0% { box-shadow: 0 0 0px 0px rgba(168, 85, 247, 0.1) !important; border-color: rgba(168, 85, 247, 0.3) !important; }
  50% { box-shadow: 0 0 10px 2px rgba(168, 85, 247, 0.3) !important; border-color: rgba(168, 85, 247, 0.5) !important; }
  100% { box-shadow: 0 0 0px 0px rgba(168, 85, 247, 0.1) !important; border-color: rgba(168, 85, 247, 0.3) !important; }
}

/* Blue (Education) */
@keyframes timelinePulseBlue {
  0% { box-shadow: 0 0 0px 0px rgba(59, 130, 246, 0.1) !important; border-color: rgba(59, 130, 246, 0.3) !important; }
  50% { box-shadow: 0 0 12px 2px rgba(59, 130, 246, 0.4) !important; border-color: rgba(59, 130, 246, 0.6) !important; }
  100% { box-shadow: 0 0 0px 0px rgba(59, 130, 246, 0.1) !important; border-color: rgba(59, 130, 246, 0.3) !important; }
}

/* Premium Minimal Silver/White (Past Items) */
@keyframes timelinePulseGray {
  0% { box-shadow: 0 0 0px 0px rgba(255, 255, 255, 0.05) !important; border-color: rgba(255, 255, 255, 0.1) !important; }
  50% { box-shadow: 0 0 8px 1px rgba(255, 255, 255, 0.2) !important; border-color: rgba(255, 255, 255, 0.3) !important; }
  100% { box-shadow: 0 0 0px 0px rgba(255, 255, 255, 0.05) !important; border-color: rgba(255, 255, 255, 0.1) !important; }
}

.timeline-glow-active {
  animation: timelinePulseActive 2s ease-in-out infinite;
  background-color: rgba(168, 85, 247, 0.1) !important;
}
.timeline-glow-active .inner-dot {
  background-color: #d8b4fe !important;
  box-shadow: 0 0 10px #d8b4fe;
}

.timeline-glow-purple {
  animation: timelinePulsePurple 3s ease-in-out infinite;
}
.timeline-glow-purple .inner-dot {
  background-color: rgba(168, 85, 247, 0.4) !important;
}

.timeline-glow-blue {
  animation: timelinePulseBlue 3.5s ease-in-out infinite;
}
.timeline-glow-blue .inner-dot {
  background-color: rgba(59, 130, 246, 0.6) !important;
}

.timeline-glow-gray {
  animation: timelinePulseGray 4s ease-in-out infinite;
}
.timeline-glow-gray .inner-dot {
  background-color: rgba(255, 255, 255, 0.3) !important;
}