:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #121212;
  --bg-tertiary: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #a1a1a1;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border: #262626;
  --container-width: 1100px;
  --nav-height: 70px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: rgba(10, 10, 10, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav-content {
  max-width: var(--container-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}

.logo-icon {
  color: var(--accent);
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.desktop-menu {
  display: flex;
  gap: 1.5rem;
}

.desktop-menu button {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  transition: color 0.2s;
}

.desktop-menu button:hover {
  color: var(--text-primary);
}

.mobile-menu-toggle {
  display: none;
  cursor: pointer;
  color: var(--text-primary);
}

/* Hero Section */
.hero-section {
  padding: calc(var(--nav-height) + 6rem) 1.5rem 6rem;
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 40%, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content h1 {
  font-size: clamp(2.75rem, 9vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  max-width: 900px;
  letter-spacing: -0.03em;
}

.highlight {
  background: linear-gradient(to right, #60a5fa, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem auto;
  font-weight: 400;
}

.hero-cta {
  margin-bottom: 5rem;
}

.primary-btn {
  background-color: var(--accent);
  color: white;
  padding: 0.9rem 2.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.primary-btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.hero-tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.tech-tag {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  padding: 0.4rem 1.1rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* Global Section Styles */
.section {
  padding: 8rem 0;
  border-top: 1px solid var(--border);
}

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

.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

.section-icon {
  color: var(--accent);
  opacity: 0.8;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* About Section */
.about-content > p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin-bottom: 4rem;
  line-height: 1.7;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.team-member {
  background-color: var(--bg-secondary);
  padding: 2.5rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: border-color 0.3s ease;
}

.team-member:hover {
  border-color: #404040;
}

.team-member h3 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
  letter-spacing: -0.01em;
}

.role {
  display: block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.team-member p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Projects/Work Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--bg-tertiary);
  padding: 2.5rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.project-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.tech-badge {
  font-size: 0.7rem;
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--accent);
  padding: 0.3rem 0.8rem;
  border-radius: 6px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-action {
  margin-top: auto;
}

.card-btn {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.card-btn:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--text-primary);
}

/* Contact Section */
.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 3rem;
  background-color: var(--bg-secondary);
  padding: 4rem;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item svg {
  color: var(--accent);
  opacity: 0.9;
}

.contact-item label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}

.contact-item span, 
.contact-item a {
  font-weight: 600;
  font-size: 1.05rem;
  word-break: break-word;
}

/* Footer */
.footer {
  padding: 6rem 0 4rem;
  background-color: var(--bg-primary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 4rem;
  border-top: 1px solid var(--border);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.1rem;
}

.copyright {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0;
  z-index: 999;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-menu button {
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 1.25rem 2rem;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
}

@media (max-width: 768px) {
  .desktop-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .section {
    padding: 6rem 0;
  }
  
  .contact-info-grid {
    padding: 2.5rem;
    gap: 2.5rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 2.5rem;
    text-align: center;
  }
}