/* ==========================================================================
   Minimalist Dark Design - Inspired by Guillermo Rauch
   ========================================================================== */

/* CSS Variables */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --text-primary: #ffffff;
  --text-secondary: #888888;
  --text-muted: #666666;
  --link-color: #ffffff;
  --link-hover: #cccccc;
  --border-color: #222222;
  
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, monospace;
  
  --max-width: 680px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-primary);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-color);
}

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

.site-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

.site-name:hover {
  color: var(--text-secondary);
}

nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

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

.social-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: var(--spacing-sm);
  padding-left: var(--spacing-sm);
  border-left: 1px solid var(--border-color);
}

.social-links a {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

.social-links svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Main Content */
main {
  padding: var(--spacing-xl) 0;
  min-height: calc(100vh - 200px);
}

/* Typography */
h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  line-height: 1.3;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--text-secondary);
}

/* About Page */
.about-content {
  display: block;
}

.profile-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  float: right;
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.intro-text {
  margin-bottom: var(--spacing-lg);
}

/* CV Download Section */
.cv-section {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.cv-links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.cv-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: var(--spacing-xs) 0;
}

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

.cv-link svg {
  width: 16px;
  height: 16px;
}

/* Blog List */
.blog-list {
  list-style: none;
}

.blog-year {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding-top: var(--spacing-md);
}

.blog-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--spacing-xs) 0;
  gap: var(--spacing-md);
}

.blog-item a {
  color: var(--text-primary);
  text-decoration: none;
  flex: 1;
}

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

.blog-views {
  color: var(--text-muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

/* Experience List */
.experience-item {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.experience-item:last-child {
  border-bottom: none;
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--spacing-xs);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.experience-title {
  font-weight: 600;
  font-size: 1rem;
}

.experience-date {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.experience-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Books List */
.book-item {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.book-item:last-child {
  border-bottom: none;
}

.book-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.book-author {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm);
}

.book-review {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

blockquote {
  border-left: 2px solid var(--border-color);
  padding-left: var(--spacing-md);
  margin: var(--spacing-md) 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* Footer */
footer {
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0;
}

/* Responsive Design */
@media (max-width: 640px) {
  :root {
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
  }
  
  header .container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  nav {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .social-links {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    margin-top: var(--spacing-xs);
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--border-color);
    width: 100%;
    justify-content: center;
  }
  
  .profile-photo {
    float: none;
    display: block;
    margin: 0 auto var(--spacing-lg) auto;
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  .blog-item {
    flex-direction: column;
    gap: 0;
  }
  
  .blog-views {
    font-size: 0.8rem;
  }
  
  .experience-header {
    flex-direction: column;
    gap: 0;
  }
}

/* Utilities */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}