/* CSS Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* CSS Custom Properties - Dark Theme */
:root {
  --bg-primary: #0a0e27;
  --bg-secondary: #1a1f3a;
  --bg-tertiary: #2a2f4a;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --accent-primary: #00d4ff;
  --accent-secondary: #ff6b6b;
  --border-color: #2a2f4a;
  --transition: all 0.3s ease;
}

/* Typography */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Fira Code', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.navbar {
  background-color: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

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

.nav-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition);
  animation: colorCycle 4s infinite;
}

.nav-brand:hover {
  filter: brightness(1.2);
}

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

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 1rem;
  border-radius: 4px;
}

.nav-link:hover {
  color: var(--accent-primary);
  background-color: var(--bg-tertiary);
}

.nav-menu a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 1rem;
  border-radius: 4px;
}

.nav-menu a:hover {
  color: var(--accent-primary);
  background-color: var(--bg-tertiary);
}

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

/* Hero Section */
.hero {
  min-height: 30vh;
  display: flex;
  align-items: top;
  justify-content: center;
  padding: 6rem 2rem 4rem;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-content {
  max-width: 800px;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.hero-annotation {
  display: block;
  font-size: 0.875rem;
  font-style: italic;
  color: var(--text-secondary);
  opacity: 0.7;
  margin-bottom: 1.5rem;
}

.highlight {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: colorCycle 4s infinite;
}

@keyframes colorCycle {
  0% {
    filter: hue-rotate(0deg);
  }
  25% {
    filter: hue-rotate(90deg);
  }

  50% {
    filter: hue-rotate(180deg);
  }

  75% {
    filter: hue-rotate(270deg);
  }
  100% {
    filter: hue-rotate(360deg);
  }
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background-color: transparent;
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px);
}

/* Section Styles */
section {
  padding: 5rem 0;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  margin: 1rem auto 0;
  border-radius: 2px;
}

/* About Section */
.about {
  background-color: var(--bg-secondary);
}

.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-text {
  margin-bottom: 3rem;
}

.about-text p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.about-text a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.about-text a:visited {
  color: var(--accent-primary);
}

.about-text a:hover {
  border-bottom-color: var(--accent-primary);
}

.skills h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
}

.skill-tag {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  text-align: center;
  font-weight: 500;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.skill-tag:hover {
  background-color: var(--accent-primary);
  color: var(--bg-primary);
  transform: translateY(-4px);
  border-color: var(--accent-primary);
}

/* Contact Section */
.contact {
  background-color: var(--bg-primary);
}

.contact-intro {
  text-align: center;
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1500px;
  margin: 0 auto;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
}

.contact-link:hover {
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.15);
}

.contact-link .icon {
  flex-shrink: 0;
  color: var(--accent-primary);
}

.contact-link span {
  font-size: 1rem;
  word-break: break-word;
}

/* Setup Section */
.setup {
  background-color: var(--bg-primary);
  min-height: 80vh;
}

.setup .container {
  padding-left: 280px;
}

.setup-content {
  max-width: 900px;
  margin: 0 auto;
}

.setup-content h1 {
  text-align: center;
}

.setup-content h2 {
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
  scroll-margin-top: 80px;
}

.setup-content p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.setup-content a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.setup-content a:visited {
  color: var(--accent-primary);
}

.setup-content a:hover {
  border-bottom-color: var(--accent-primary);
}

.setup-content ul {
  margin: 1.5rem 0;
  padding-left: 2rem;
  color: var(--text-secondary);
}

.setup-content li {
  margin-bottom: 0.75rem;
  line-height: 1.8;
}

/* Setup Sidebar Navigation */
.setup-sidebar {
  position: fixed;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 100;
  background-color: rgba(26, 31, 58, 0.8);
  backdrop-filter: blur(10px);
  padding: 1.5rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.sidebar-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: var(--transition);
  border-left: 3px solid transparent;
  white-space: nowrap;
}

.sidebar-link:hover {
  color: var(--accent-primary);
  background-color: var(--bg-tertiary);
  border-left-color: var(--accent-primary);
}

.sidebar-link.active {
  color: var(--accent-primary);
  background-color: var(--bg-tertiary);
  border-left-color: var(--accent-primary);
}

/* Code Blocks */
pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

code {
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-primary);
}

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

/* Inline code */
:not(pre) > code {
  background-color: var(--bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.875rem;
  color: var(--accent-primary);
}

/* Footer */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
}

.footer p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
  /* Adjust sidebar and content for medium screens */
  .setup-sidebar {
    left: 1rem;
    padding: 1rem 0.75rem;
  }

  .setup .container {
    padding-left: 200px;
  }
}

@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }

  .nav-menu {
    gap: 1rem;
  }

  .hero {
    padding: 5rem 1rem 3rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
    text-align: center;
  }

  section {
    padding: 3rem 0;
  }

  .container {
    padding: 0 1rem;
  }

  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  }

  .contact-links {
    grid-template-columns: 1fr;
  }

  /* Hide setup sidebar on mobile */
  .setup-sidebar {
    display: none;
  }

  /* Reset container padding when sidebar is hidden */
  .setup .container {
    padding-left: 1rem;
  }
}

@media (max-width: 480px) {
  .nav-links {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }

  .nav-menu {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Animation for smooth entrance */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content {
  animation: fadeInUp 0.8s ease-out;
}