:root {
  --primary-dark: #0a0a0a;
  --secondary-dark: #1a1a1a;
  --card-dark: #2a2a2a;
  --text-light: #ffffff;
  --text-gray: #b0b0b0;
  --text-muted: #808080;
  --purple-gradient-start: #8b5cf6;
  --purple-gradient-end: #a855f7;
  --purple-dark: #7c3aed;
  --accent-blue: #3b82f6;
  --border-color: #333333;
  --hover-bg: #333333;
  
  
  --animation-fast: 0.2s;
  --animation-normal: 0.3s;
  --animation-slow: 0.6s;
  --animation-very-slow: 1s;
  --ease-out-cubic: cubic-bezier(0.215, 0.61, 0.355, 1);
  --ease-in-out-cubic: cubic-bezier(0.645, 0.045, 0.355, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}


* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'JetBrains Mono', monospace, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--primary-dark);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}


body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
  z-index: -1;
  animation: backgroundFloat 20s ease-in-out infinite;
}

@keyframes backgroundFloat {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-10px) rotate(1deg); }
  66% { transform: translateY(10px) rotate(-1deg); }
}


.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp var(--animation-slow) var(--ease-out-cubic) forwards;
}

.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }
.fade-in-delay-4 { animation-delay: 0.4s; }

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


.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  animation: slideInLeft var(--animation-slow) var(--ease-out-cubic) forwards;
}

@keyframes slideInLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}


.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  animation: slideInRight var(--animation-slow) var(--ease-out-cubic) forwards;
}

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


.scale-in {
  opacity: 0;
  transform: scale(0.8);
  animation: scaleIn var(--animation-slow) var(--ease-bounce) forwards;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transform: translateY(-100%);
  animation: slideDownHeader var(--animation-slow) var(--ease-out-cubic) forwards;
}

@keyframes slideDownHeader {
  to {
    transform: translateY(0);
  }
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-brand h1 {
  font-size: 1.2rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--purple-gradient-start), var(--purple-gradient-end));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 3s ease-in-out infinite;
  cursor: pointer;
  transition: transform var(--animation-normal) var(--ease-bounce);
}

.nav-brand h1:hover {
  transform: scale(1.05);
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-item {
  opacity: 0;
  transform: translateY(-100px);
  animation: fadeInDown var(--animation-slow) var(--ease-out-cubic) forwards;
}

.nav-item:nth-child(1) { animation-delay: 0.1s; }
.nav-item:nth-child(2) { animation-delay: 0.2s; }
.nav-item:nth-child(3) { animation-delay: 0.3s; }

@keyframes fadeInDown {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav-link {
  color: var(--text-gray);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--animation-normal) var(--ease-out-cubic);
  position: relative;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  overflow: hidden;
}



.nav-link:hover::before {
  left: 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-light);
  transform: translateY(-2px);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, var(--purple-gradient-start), var(--purple-gradient-end));
  animation: expandUnderline var(--animation-normal) var(--ease-out-cubic) forwards;
}

@keyframes expandUnderline {
  to {
    left: 0;
    width: 100%;
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color var(--animation-normal) ease;
}

.nav-toggle:hover {
  background-color: rgba(139, 92, 246, 0.1);
}

.bar {
  width: 25px;
  height: 3px;
  background-color: var(--text-light);
  margin: 3px 0;
  transition: all var(--animation-normal) var(--ease-out-cubic);
  border-radius: 2px;
}


.main {
  margin-top: 80px;
  min-height: calc(100vh - 80px);
}

.hero {
  padding: 4rem 0;
  text-align: center;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-light), var(--text-gray));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-gray);
  margin-bottom: 2rem;
  font-weight: 400;
}

.hero-description {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.projects {
  padding: 4rem 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--text-light);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}


.card {
  background: var(--card-dark);
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--animation-normal) var(--ease-out-cubic);
  border: 1px solid var(--border-color);
  position: relative;
  cursor: pointer;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(168, 85, 247, 0.1));
  opacity: 0;
  transition: opacity var(--animation-normal) ease;
  z-index: 1;
}

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

.card:hover {
  transform: translateY(-12px) rotateX(5deg);
  box-shadow: 
    0 25px 50px rgba(139, 92, 246, 0.4),
    0 0 0 1px rgba(139, 92, 246, 0.2);
}

.card-image {
  position: relative;
  height: 250px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--purple-gradient-start), var(--purple-gradient-end));
}

.card-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.card:hover .card-image::after {
  transform: translateX(100%);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--animation-slow) var(--ease-out-cubic);
}

.card:hover .card-image img {
  transform: scale(1.1) rotate(2deg);
}

.card-content {
  padding: 1.5rem;
  position: relative;
  z-index: 2;
}

.card-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-light);
  transition: color var(--animation-normal) ease;
}

.card:hover .card-title {
  color: var(--purple-gradient-start);
}

.card-description {
  color: var(--text-gray);
  margin-bottom: 1rem;
  line-height: 1.6;
  transition: color var(--animation-normal) ease;
}

.card:hover .card-description {
  color: var(--text-light);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: linear-gradient(135deg, var(--purple-gradient-start), var(--purple-gradient-end));
  color: white;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--animation-normal) var(--ease-bounce);
  position: relative;
  overflow: hidden;
}

.tag::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 0.5s ease;
}

.card:hover .tag::before {
  left: 100%;
}

.card:hover .tag {
  transform: translateY(-2px) scale(1.05);
}

/* About Page Styles */
.about-hero {
  padding: 4rem 0;
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-light), var(--text-gray));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-subtitle {
  font-size: 1.5rem;
  color: var(--purple-gradient-start);
  margin-bottom: 2rem;
  font-weight: 500;
}

.about-description {
  font-size: 1.1rem;
  color: var(--text-gray);
  line-height: 1.8;
}

.about-description p {
  margin-bottom: 1.5rem;
}

.about-image {
  display: flex;
  justify-content: center;
}

.about-image img {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--purple-gradient-start);
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
}


.skills {
  padding: 4rem 0;
  background-color: var(--secondary-dark);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.skill-category {
  background: var(--card-dark);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.skill-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--purple-gradient-start);
}

.skill-list {
  list-style: none;
}

.skill-list li {
  padding: 0.5rem 0;
  color: var(--text-gray);
  border-bottom: 1px solid var(--border-color);
}

.skill-list li:last-child {
  border-bottom: none;
}


.experience {
  padding: 4rem 0;
}

.timeline {
  max-width: 800px;
  margin: 2rem auto 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 200px;
  top: 0;
  bottom: -3rem;
  width: 2px;
  background: linear-gradient(135deg, var(--purple-gradient-start), var(--purple-gradient-end));
  margin-left: -1rem;
}

.timeline-item:last-child::before {
  display: none;
}

.timeline-date {
  font-weight: 600;
  color: var(--purple-gradient-start);
  font-size: 0.9rem;
}

.timeline-content {
  background: var(--card-dark);
  padding: 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.timeline-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.timeline-company {
  color: var(--purple-gradient-start);
  font-weight: 500;
  margin-bottom: 1rem;
}

.timeline-description {
  color: var(--text-gray);
  line-height: 1.6;
}

/* Contact Section */
.contact {
  padding: 4rem 0;
  background-color: var(--secondary-dark);
  text-align: center;
}

.contact-description {
  font-size: 1.1rem;
  color: var(--text-gray);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.contact-link {
  color: var(--purple-gradient-start);
  text-decoration: none;
  font-weight: 500;
  padding: 0.8rem 1.5rem;
  border: 2px solid var(--purple-gradient-start);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.contact-link:hover {
  background: linear-gradient(135deg, var(--purple-gradient-start), var(--purple-gradient-end));
  color: white;
  transform: translateY(-2px);
}

.footer {
  background-color: var(--primary-dark);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--primary-dark);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    border-top: 1px solid var(--border-color);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-list {
    flex-direction: column;
    padding: 2rem 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .nav-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .about-title {
    font-size: 2.5rem;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .timeline-item::before {
    display: none;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  .container {
    padding: 0 1rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .about-title {
    font-size: 2rem;
  }

  .nav-brand h1 {
    font-size: 1rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .card-content {
    padding: 1rem;
  }

  .about-image img {
    width: 250px;
    height: 250px;
  }
}

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

a:focus,
button:focus {
  outline: 2px solid var(--purple-gradient-start);
  outline-offset: 2px;
}

@media (prefers-contrast: high) {
  :root {
    --text-gray: #ffffff;
    --text-muted: #cccccc;
    --border-color: #666666;
  }
}

.lang-btn {
  margin-left: 1rem;
  padding: 0.4rem 0.8rem;
  border: 2px solid var(--purple-gradient-start);
  border-radius: 6px;
  background: transparent;
  color: var(--text-light);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
}

.lang-btn:hover {
  background: linear-gradient(135deg, var(--purple-gradient-start), var(--purple-gradient-end));
  color: white;
  transform: translateY(-2px);
}