:root {
  --bg-color: #0d0d10;
  --bg-secondary: #16161d;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --accent-color: #3b82f6;
  /* Electric Blue */
  --accent-hover: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.5);
  --font-family: 'Inter', sans-serif;
  --container-width: 1100px;
  --header-height: 70px;
  --transition-speed: 0.3s;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  /* For z-index context if needed */
}

/* AI Background Animation */
#ai-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  /* Behind everything */
  pointer-events: none;
  /* Let clicks pass through */
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-speed);
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.btn.primary {
  background-color: var(--accent-color);
  color: white;
  border: 1px solid var(--accent-color);
}

.btn.primary:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 0 15px var(--accent-glow);
}

.btn.secondary {
  background-color: transparent;
  border: 1px solid var(--text-secondary);
  color: var(--text-primary);
  margin-left: 10px;
}

.btn.secondary:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

/* Header */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(13, 13, 16, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-color);
  letter-spacing: -1px;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links li a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.nav-links li a:hover {
  color: var(--accent-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Sections */
section {
  padding: 80px 0;
}

h2 {
  font-size: 2rem;
  margin-bottom: 40px;
  color: var(--text-primary);
  position: relative;
}

h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background-color: var(--accent-color);
  margin-top: 10px;
  border-radius: 2px;
}

/* Hero Section */
#hero {
  padding-top: calc(var(--header-height) + 80px);
  min-height: 80vh;
  display: flex;
  align-items: center;
  text-align: left;
}

#hero h1 {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 20px;
  font-weight: 800;
}

.highlight {
  color: var(--accent-color);
  background: linear-gradient(120deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0) 100%);
}

#hero .subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 40px;
}

/* About Section */
#about .about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

#about p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.code-block {
  background-color: var(--bg-secondary);
  padding: 25px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-family: 'Fira Code', monospace;
  /* Fallback to monospace if Fira Code isn't loaded */
  font-size: 0.9rem;
  color: #a5f3fc;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.code-block code {
  white-space: pre-wrap;
  display: block;
}

/* Experience & Education */
.card,
.timeline-item {
  background-color: var(--bg-secondary);
  padding: 30px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  margin-bottom: 20px;
  transition: transform var(--transition-speed);
}

.card:hover,
.timeline-item:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.timeline-item h3,
.card h3 {
  font-size: 1.3rem;
  margin-bottom: 5px;
}

.company,
.institution {
  display: block;
  font-size: 0.9rem;
  color: var(--accent-color);
  margin-bottom: 15px;
  font-weight: 600;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.tags li {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--accent-color);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* Projects */
.project-card {
  background-color: var(--bg-secondary);
  border-radius: 12px;
  padding: 40px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.project-info ul {
  margin: 20px 0;
  color: var(--text-secondary);
  padding-left: 20px;
  list-style-type: disc;
}

.link-text {
  color: var(--accent-color);
  font-weight: 600;
  display: inline-block;
  margin-top: 10px;
}

.link-text:hover {
  text-decoration: underline;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.skill-category {
  background-color: var(--bg-secondary);
  padding: 30px;
  border-radius: 12px;
  border-top: 3px solid var(--accent-color);
}

.skill-category h3 {
  margin-bottom: 15px;
}

/* Media/Contact */
.media-kit {
  background-color: var(--bg-secondary);
  padding: 40px;
  border-radius: 12px;
}

.section-intro {
  margin-bottom: 30px;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 40px 0;
  flex-wrap: wrap;
}

.social {
  background-color: var(--bg-secondary);
}

.location {
  color: var(--text-secondary);
  margin-top: 20px;
}

/* Footer */
footer {
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  #hero h1 {
    font-size: 2.5rem;
  }

  .nav-links {
    display: none;
    /* Hide for now, can implement toggle later */
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--bg-secondary);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  #about .about-grid {
    grid-template-columns: 1fr;
  }

  .cta-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }

  .btn {
    width: 100%;
    text-align: center;
    margin-left: 0;
  }
}

/* Enhancements: Tech Badges */
.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.skill-badge {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.skill-badge:hover {
  background-color: var(--accent-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Enhancements: Contact Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  max-width: 900px;
  margin: 0 auto;
  text-align: left;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-form {
  background-color: var(--bg-secondary);
  padding: 30px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px;
  background-color: var(--bg-color);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-family);
  transition: border-color 0.3s;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-color);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Nav Button Special Style */
.nav-btn-cv {
  background-color: transparent;
  border: 1px solid var(--accent-color);
  padding: 8px 16px;
  color: var(--accent-color) !important;
  transition: all 0.3s;
}

/* Glassmorphism Utilities */
.glass-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

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

/* Typewriter Cursor */
.typewriter-text {
  color: var(--accent-color);
  font-weight: 700;
}

.cursor {
  display: inline-block;
  width: 3px;
  background-color: var(--text-primary);
  animation: blink 1s infinite;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

/* Homepage Section Spacing */
.home-section {
  padding: 80px 0;
}

.section-header {
  margin-bottom: 40px;
  text-align: center;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

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