:root {
  /* Dark Space theme palette */
  --bg-color: transparent;
  --bg-card: rgba(15, 15, 25, 0.75); /* Translucent dark cards */
  --bg-alt: transparent;
  --border-color: rgba(255, 255, 255, 0.1);
  
  /* Primary color: Indigo */
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-light: rgba(99, 102, 241, 0.15); 
  
  /* Text colors for dark theme */
  --text-main: #cbd5e1; 
  --text-heading: #ffffff; 
  --text-light: #ffffff; 
  
  --font-body: 'Inter', sans-serif;
  --font-heading: 'Space Grotesk', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  background-color: #030308;
}

body {
  background-color: transparent;
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

/* Space Background */
#space-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -10;
  transition: filter 0.05s linear;
}

::selection {
  background-color: var(--accent);
  color: var(--text-light);
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--text-heading);
  font-weight: 700;
}

/* Navbar */
#navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.2rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(10, 10, 20, 0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

.nav-logo {
  color: var(--text-heading);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  letter-spacing: 2px;
}

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

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 1.5rem;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  cursor: pointer;
  padding: 0.2rem 0.3rem;
  transition: color 0.2s;
}

.lang-btn:hover,
.lang-btn.active {
  color: var(--accent);
}

.lang-sep {
  color: var(--border-color);
  font-size: 0.85rem;
}

.nav-link {
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-heading);
  margin: 5px 0;
}

/* Hero Section */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 2rem;
  text-align: center;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5rem);
  margin-bottom: 2rem;
  letter-spacing: 2px;
  color: var(--text-heading);
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--accent);
  color: var(--text-light);
  padding: 1rem 2rem;
  text-decoration: none;
  font-family: var(--font-heading);
  border-radius: 8px;
  font-weight: 600;
  transition: background-color 0.2s, transform 0.2s;
}

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

/* Sections */
.section {
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 3rem;
  color: var(--text-heading);
  text-align: center;
}

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

.about-text p {
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

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

.skill-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.skill-item svg {
  color: var(--accent);
  width: 20px;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.card-image {
  aspect-ratio: 16/9;
  background-color: #12121a; /* Kept dark just behind SVGs so they stand out */
  position: relative;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(10, 10, 20, 0.85); /* Dark overlay */
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}

.project-card:hover .card-overlay {
  opacity: 1;
}

.github-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--accent);
  color: var(--text-light);
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background-color 0.2s;
}

.github-btn:hover {
  background-color: var(--accent-hover);
}

.card-content {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.card-description {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

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

.card-tag {
  font-size: 0.75rem;
  padding: 0.3rem 0.8rem;
  background-color: var(--accent-light);
  color: var(--accent);
  border-radius: 20px;
  font-weight: 600;
}

/* Contact Section */
.contact-content {
  text-align: center;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-heading);
  text-decoration: none;
  font-weight: 500;
  transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.contact-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.contact-link svg {
  color: var(--accent);
}

/* Footer */
#footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--text-main);
}

/* Responsive */
@media (max-width: 768px) {

  /* Prevent any horizontal overflow */
  html, body {
    overflow-x: hidden;
    max-width: 100vw;
  }

  /* Navbar: stack lang switcher and hamburger on the right */
  #navbar {
    padding: 1rem 1.2rem;
    justify-content: space-between;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: rgba(15, 15, 25, 0.98);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.2);
    z-index: 99;
  }

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

  .hamburger {
    display: block;
  }

  .lang-switcher {
    margin-left: 0;
  }

  /* Sections: full width with smaller padding */
  .section {
    padding: 4rem 1.2rem;
  }

  /* About: single column */
  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Skills: single column on very small screens, 2 on medium */
  .about-skills {
    grid-template-columns: 1fr;
  }

  /* Project cards: full width */
  .projects-grid {
    grid-template-columns: 1fr;
  }

  /* Contact links: stack vertically */
  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  .contact-link {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

  /* Hero button: full width on small screens */
  .cta-btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .hero-title {
    font-size: 3rem;
  }

  .section-title {
    font-size: 1.6rem;
  }
}