:root {
  --bg-primary: #0a0e14;
  --bg-secondary: #0f1419;
  --bg-tertiary: #151a21;
  --accent-primary: #6050DC;
  --accent-secondary: #007FFF;
  --text-primary: #e6e8eb;
  --text-secondary: #a0a8b5;
  --text-muted: #6c7585;
  --border-color: #1f2937;
  --code-bg: #0d1117;
}

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

body {
  font-family: 'IBM Plex Sans', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.grid-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(96, 80, 220, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(96, 80, 220, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 0;
  pointer-events: none;
  animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {

  0%,
  100% {
    opacity: 0.3;
  }

  50% {
    opacity: 0.6;
  }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

header {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 4rem;
  animation: slideDown 0.8s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }

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

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-shadow: 0 0 20px rgba(96, 80, 220, 0.3);
  letter-spacing: -0.02em;
}

.header-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 300;
}

nav {
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width 0.3s ease;
}

nav a:hover {
  color: var(--accent-primary);
}

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

section {
  margin-bottom: 6rem;
  animation: fadeIn 0.8s ease-out;
  animation-fill-mode: both;
}

section:nth-child(1) {
  animation-delay: 0.1s;
}

section:nth-child(2) {
  animation-delay: 0.2s;
}

section:nth-child(3) {
  animation-delay: 0.3s;
}

section:nth-child(4) {
  animation-delay: 0.4s;
}

section:nth-child(5) {
  animation-delay: 0.5s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.8rem;
  color: var(--accent-secondary);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

h2::before {
  content: '>';
  color: var(--accent-primary);
  font-size: 1.5rem;
}

.about-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.about-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
}

.about-content p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.experience-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
  margin-bottom: 2rem;
  transition: all 0.3s ease;
  position: relative;
}

.experience-item:hover {
  border-color: var(--accent-primary);
  transform: translateX(5px);
  box-shadow: -5px 0 0 var(--accent-primary);
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.experience-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.3rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.experience-company {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-top: 0.25rem;
}

.experience-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.experience-item ul {
  list-style: none;
  margin-top: 1rem;
}

.experience-item li {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
}

.experience-item li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-size: 1.2rem;
}

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

.project-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
  padding-top: 2.5rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover {
  border-color: var(--accent-secondary);
  transform: translateY(-5px);
}

.github-button {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  transition: all 0.3s ease;
  z-index: 10;
  text-decoration: none;
}

.github-button:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: scale(1.1);
}

.github-button i {
  font-size: 20px;
}

.project-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.3rem;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
  padding-right: 3rem;
}

.project-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.7;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.skill-category {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
}

.skill-category h3 {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-secondary);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-tag {
  background: var(--code-bg);
  color: var(--accent-primary);
  padding: 0.4rem 1rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.skill-tag:hover {
  border-color: var(--accent-primary);
  background: var(--bg-tertiary);
  transform: scale(1.05);
}

.education-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.education-card:hover {
  border-color: var(--accent-primary);
  transform: translateX(5px);
  box-shadow: -5px 0 0 var(--accent-primary);
}

.education-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.education-school {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
}

.education-degree {
  color: var(--text-primary);
  font-size: 1.05rem;
}

.education-date {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.education-details {
  color: var(--text-secondary);
  line-height: 1.8;
}

.education-details strong {
  color: var(--accent-secondary);
}

.contact-form {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2.5rem;
  max-width: 600px;
}

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-secondary);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

input,
textarea {
  width: 100%;
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 1rem;
  transition: all 0.3s ease;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(96, 80, 220, 0.1);
}

textarea {
  resize: vertical;
  min-height: 150px;
}

button {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border: none;
  padding: 0.85rem 2rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

button:hover {
  background: var(--accent-secondary);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(96, 80, 220, 0.3);
}

button:active {
  transform: translateY(0);
}

.publication-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.publication-card:hover {
  border-color: var(--accent-primary);
  transform: translateX(5px);
  box-shadow: -5px 0 0 var(--accent-primary);
}

.publication-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.2rem;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
}

.publication-authors {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.publication-meta {
  display: flex;
  gap: 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.publication-doi {
  color: var(--accent-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.publication-doi:hover {
  color: var(--accent-primary);
}

footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  text-align: center;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  nav {
    width: 100%;
    justify-content: center;
  }

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

  .experience-header {
    flex-direction: column;
  }
}

.success-message {
  display: none;
  background: var(--bg-tertiary);
  border: 1px solid var(--accent-primary);
  border-radius: 4px;
  padding: 1rem;
  margin-top: 1rem;
  color: var(--accent-primary);
  font-family: 'JetBrains Mono', monospace;
}

.success-message.show {
  display: block;
  animation: slideIn 0.3s ease-out;
}

.error-message {
  display: none;
  background: var(--bg-tertiary);
  border: 1px solid #ff4444;
  border-radius: 4px;
  padding: 1rem;
  margin-top: 1rem;
  color: #ff4444;
  font-family: 'JetBrains Mono', monospace;
}

.error-message.show {
  display: block;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

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