/* Developer-Focused Theme for echoValue */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Colors - GitHub Dark inspired */
  --color-bg-primary: #0d1117;
  --color-bg-secondary: #161b22;
  --color-bg-tertiary: #21262d;
  --color-border: #30363d;
  --color-border-hover: #58a6ff;

  /* Text */
  --color-text-primary: #c9d1d9;
  --color-text-secondary: #8b949e;
  --color-text-muted: #6e7681;

  /* Accents */
  --color-accent-blue: #58a6ff;
  --color-accent-green: #3fb950;
  --color-accent-orange: #f78166;
  --color-accent-purple: #bc8cff;
  --color-accent-cyan: #39d0d8;

  /* Status */
  --color-success: #3fb950;
  --color-warning: #d29922;
  --color-error: #f85149;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', monospace;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection */
::selection {
  background-color: rgba(88, 166, 255, 0.3);
  color: var(--color-text-primary);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  padding: 1rem 0;
}

.navbar .container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 1.125rem;
  font-family: var(--font-mono);
}

.navbar-brand img {
  height: 28px;
  width: auto;
}

.navbar-nav {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.navbar-nav a {
  text-decoration: none;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
}

.navbar-nav a:hover {
  color: var(--color-accent-blue);
}

.navbar-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-blue);
  transition: width 0.2s ease;
}

.navbar-nav a:hover::after {
  width: 100%;
}

/* Hero Section */
.hero {
  padding-top: 8rem;
  padding-bottom: var(--spacing-xl);
  background-color: var(--color-bg-primary);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-blue), transparent);
  opacity: 0.5;
}

.hero .container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 .mono {
  font-family: var(--font-mono);
  color: var(--color-accent-green);
  -webkit-text-fill-color: var(--color-accent-green);
}

.hero h1 .badge {
  color: var(--color-bg-primary);
  -webkit-text-fill-color: var(--color-bg-primary);
}

.hero p {
  font-size: 1.25rem;
  max-width: 800px;
  margin: 0 auto 2rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.hero.compact {
  padding-top: 6rem;
  padding-bottom: var(--spacing-lg);
}

/* Sections */
.section {
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
}

.section.no-border {
  border-top: none;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section-header {
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
  font-family: var(--font-mono);
}

.section-header h2::before {
  content: '// ';
  color: var(--color-accent-blue);
  font-weight: 400;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 800px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--font-mono);
}

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

.btn-primary:hover {
  background-color: transparent;
  color: var(--color-accent-blue);
  transform: translateY(-1px);
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--color-accent-blue);
  border-color: var(--color-accent-blue);
}

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

/* Project Cards */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.project-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.3s ease;
}

.project-card:hover {
  border-color: var(--color-accent-blue);
  transform: translateY(-2px);
}

.project-card-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.project-card-icon {
  font-size: 2rem;
  line-height: 1;
}

.project-card-content {
  padding: var(--spacing-md);
}

.project-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
}

.project-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.project-features {
  list-style: none;
  margin-bottom: 1.5rem;
}

.project-features li {
  padding: 0.5rem 0;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
}

.project-features li::before {
  content: "✓";
  color: var(--color-accent-green);
  font-weight: 700;
  font-size: 1rem;
}

.project-card-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Badge */
.badge {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  background-color: var(--color-accent-orange);
  color: var(--color-bg-primary);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

/* Code Block */
.code-block {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}

.code-block code {
  color: var(--color-text-secondary);
}

.code-comment {
  color: var(--color-text-muted);
}

.code-string {
  color: var(--color-accent-green);
}

.code-function {
  color: var(--color-accent-purple);
}

.code-output {
  color: var(--color-accent-cyan);
}

/* Pricing Cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.pricing-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all 0.3s ease;
}

.pricing-card:hover {
  border-color: var(--color-accent-blue);
  transform: translateY(-2px);
}

.pricing-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
  font-family: var(--font-mono);
}

.pricing-card .price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent-blue);
  margin-bottom: 1rem;
  font-family: var(--font-mono);
}

.pricing-card ul {
  list-style: none;
  margin-bottom: 1.5rem;
}

.pricing-card li {
  padding: 0.5rem 0;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* Contact Section */
.contact-info {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

.contact-item {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  min-width: 250px;
}

.contact-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.contact-item a {
  color: var(--color-accent-blue);
  text-decoration: none;
  font-size: 0.9375rem;
}

.contact-item a:hover {
  text-decoration: underline;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}

.social-links a {
  color: var(--color-text-secondary);
  font-size: 1.5rem;
  transition: color 0.2s ease;
}

.social-links a:hover {
  color: var(--color-accent-blue);
}

/* Footer */
.footer {
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.footer a:hover {
  color: var(--color-accent-blue);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted) !important; }
.text-mono { font-family: var(--font-mono); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

/* Responsive */
@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.125rem;
  }

  .section-header h2 {
    font-size: 2rem;
  }

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

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

  .contact-info {
    flex-direction: column;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}