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

/* CSS Custom Properties for Theming */
:root {
  --primary: #3b82f6;
  --primary-light: #60a5fa;
  --background: #ffffff;
  --surface: #f8fafc;
  --text-primary: #0a0a0a;
  --text-secondary: #64748b;
  --border: rgba(0, 0, 0, 0.1);
  --accent: #8b5cf6;
  --glass-bg: rgba(0, 0, 0, 0.03);
  --glass-border: rgba(0, 0, 0, 0.1);
}

/* Dark mode - when html has class="dark" */
html.dark {
  --background: #0a0a0a;
  --surface: #171717;
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --border: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.1);
}

/* Typography */
body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  line-height: 1.6;
  background-color: var(--background);
  color: var(--text-primary);
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
  scroll-behavior: smooth;
}

/* Layout Classes */
.container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
  border-bottom: 1px solid var(--border);
  background-color: var(--background);
  backdrop-filter: blur(12px);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-content {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.nav-links {
  display: none;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-contact {
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.15s ease;
}

.nav-contact:hover {
  background-color: var(--text-primary);
  color: var(--background);
}

/* Hero Section */
.hero {
  position: relative;
  padding-top: 8rem;
  padding-bottom: 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-glow-1 {
  position: absolute;
  top: -10%;
  left: -10%;
  width: 40%;
  height: 40%;
  background-color: rgba(59, 130, 246, 0.2);
  border-radius: 50%;
  filter: blur(120px);
}

.hero-glow-2 {
  position: absolute;
  bottom: 10%;
  right: -10%;
  width: 30%;
  height: 30%;
  background-color: rgba(139, 92, 246, 0.2);
  border-radius: 50%;
  filter: blur(120px);
}

.hero-content {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 10;
  text-align: center;
}

.hero-title {
  font-size: 3.75rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, #ffffff, #94a3b8, #ffffff);
  background-size: 200% 200%;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  animation: subtle-gradient 8s ease infinite;
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 2rem;
}

.hero-description {
  max-width: 42rem;
  margin: 0 auto 3rem;
  font-size: 1.125rem;
  line-height: 1.625;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.btn-primary {
  padding: 1rem 2rem;
  background-color: #ffffff;
  color: var(--background);
  font-weight: 600;
  border-radius: 0.5rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.15s ease;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  padding: 1rem 2rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-weight: 600;
  border-radius: 0.5rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

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

.btn-tertiary {
  padding: 1rem 2rem;
  background-color: transparent;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: color 0.15s ease;
}

.btn-tertiary:hover {
  color: var(--text-primary);
}

/* Section Styles */
.section {
  padding: 6rem 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-secondary);
}

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

.about-content h2 {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  line-height: 1.625;
  margin-bottom: 2rem;
}

.about-quote {
  padding: 1.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 1rem;
  border-left: 4px solid var(--primary);
}

.about-quote p {
  font-style: italic;
  color: var(--text-secondary);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.capability-card {
  padding: 1rem;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 0.75rem;
}

.capability-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: rgba(59, 130, 246, 0.1);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--primary);
}

.capability-icon.purple {
  background-color: rgba(139, 92, 246, 0.1);
  color: var(--accent);
}

.capability-card h3 {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.capability-card p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.project-card {
  position: relative;
  background-color: var(--surface);
  border-radius: 1rem;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all 0.15s ease;
}

.project-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
}

.project-image {
  height: 12rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.project-image-1 {
  background: linear-gradient(
    to bottom right,
    rgba(37, 99, 235, 0.2),
    rgba(147, 51, 234, 0.2)
  );
}

.project-image-2 {
  background: linear-gradient(
    to bottom right,
    rgba(16, 185, 129, 0.2),
    rgba(37, 99, 235, 0.2)
  );
}

.project-image-3 {
  background: linear-gradient(
    to bottom right,
    rgba(147, 51, 234, 0.2),
    rgba(219, 39, 119, 0.2)
  );
}

.project-content {
  padding: 2rem;
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-tag {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 0.25rem;
  color: var(--text-secondary);
}

.project-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  transition: color 0.15s ease;
}

.project-card:hover h3 {
  color: var(--primary);
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.625;
  margin-bottom: 1.5rem;
}

.project-link {
  display: flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  text-decoration: none;
}

.project-link svg {
  width: 1rem;
  height: 1rem;
  margin-left: 0.5rem;
}

/* Tech Stack Section */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.tech-item {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.tech-item:hover {
  border-color: rgba(59, 130, 246, 0.5);
  background-color: rgba(59, 130, 246, 0.05);
}

.tech-icon {
  width: 3rem;
  height: 3rem;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.tech-icon.emerald {
  color: #10b981;
}

.tech-name {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Footer */
.footer {
  padding: 6rem 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  text-align: center;
}

.footer h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.footer p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: 3rem;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.footer-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-link {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: var(--primary);
}

.footer-divider {
  display: none;
  width: 1px;
  height: 1.5rem;
  background-color: rgba(255, 255, 255, 0.2);
}

.footer-copyright {
  margin-top: 6rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  opacity: 0.5;
}

/* Custom Animations */
@keyframes subtle-gradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--background);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}

/* Media Queries */
@media (min-width: 768px) {
  .hero {
    padding-top: 12rem;
    padding-bottom: 8rem;
  }

  .hero-title {
    font-size: 6rem;
  }

  .hero-subtitle {
    font-size: 1.875rem;
  }

  .nav-links {
    display: flex;
  }

  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }

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

  .capabilities-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .footer-links {
    flex-direction: row;
    align-items: center;
  }

  .footer-divider {
    display: block;
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .tech-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

/* Theme Toggle Button */
.theme-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  z-index: 50;
}

.theme-toggle:hover {
  background-color: var(--primary);
  color: white;
}