/* ===========================
   Clean Minimalist Portfolio
   =========================== */

:root {
  /* Colors - Minimal palette */
  --color-bg: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-text: #1a1a1a;
  --color-text-secondary: #6b7280;
  --color-accent: #2563eb;
  --color-accent-light: #dbeafe;
  --color-border: #e5e7eb;
  --color-header-bg: #ffffff;
  --color-footer-bg: #f8f9fa;

  /* Typography */
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.7;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Layout */
  --max-width: 800px;
  --border-radius: 8px;
}

/* ===========================
   Base Styles
   =========================== */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   Typography
   =========================== */

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 var(--spacing-md) 0;
}

h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

h2 {
  font-size: 1.5rem;
  margin-top: var(--spacing-xl);
}

h3 {
  font-size: 1.25rem;
  margin-top: var(--spacing-lg);
}

p {
  margin: 0 0 var(--spacing-md) 0;
}

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

a:hover {
  opacity: 0.7;
}

strong {
  font-weight: 600;
}

ul, ol {
  margin: 0 0 var(--spacing-md) 0;
  padding-left: var(--spacing-lg);
}

li {
  margin-bottom: var(--spacing-xs);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===========================
   Header
   =========================== */

.site-header {
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-md);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.site-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  margin: 0;
  transition: opacity 0.2s ease;
}

.site-title:hover {
  opacity: 0.7;
}

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

.site-nav a {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--color-text);
  opacity: 1;
}

/* ===========================
   Main Content
   =========================== */

.site-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md) 4rem;
}

/* ===========================
   Pills
   =========================== */

.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin: var(--spacing-md) 0 var(--spacing-lg);
}

.pill {
  background: var(--color-accent-light);
  color: var(--color-accent);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
}

/* ===========================
   Cards
   =========================== */

.card {
  background: var(--color-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border: 1px solid var(--color-border);
}

.card h2 {
  margin-top: 0;
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
}

.card h3 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.card ul {
  margin-bottom: 0;
}

.card > p:last-child,
.card > ul:last-child {
  margin-bottom: 0;
}

/* ===========================
   Post Styles
   =========================== */

.post {
  background: var(--color-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}

.post-header h1 {
  margin-bottom: var(--spacing-sm);
}

.post-meta {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.post-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  font-size: 1.1rem;
}

.post-content h2 {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.post-content h3 {
  margin-top: var(--spacing-lg);
}

.post-content pre {
  background: var(--color-text);
  color: #f8fafc;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
  font-size: 0.9rem;
}

.post-content code {
  background: var(--color-bg-secondary);
  color: var(--color-text);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

.post-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.post-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--spacing-md);
  color: var(--color-text-secondary);
  margin: var(--spacing-lg) 0;
  font-style: italic;
}

.post-content ul,
.post-content ol {
  margin: var(--spacing-md) 0;
}

.post-content li {
  margin-bottom: var(--spacing-xs);
}

.post-content img {
  border-radius: var(--border-radius);
  margin: var(--spacing-lg) 0;
}

/* ===========================
   Footer
   =========================== */

.site-footer {
  background: var(--color-footer-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-container p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm);
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-sm);
}

.footer-social a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-social a:hover {
  color: var(--color-accent);
  opacity: 1;
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 640px) {
  :root {
    --font-size-base: 15px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.35rem;
  }

  h3 {
    font-size: 1.15rem;
  }

  .site-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .header-container {
    gap: var(--spacing-sm);
  }

  .site-nav {
    gap: var(--spacing-sm);
    font-size: 0.9rem;
  }

  .site-content {
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-xl);
  }

  .card,
  .post {
    padding: var(--spacing-md);
  }

  .pill-group {
    gap: 0.4rem;
  }

  .pill {
    font-size: 0.8rem;
    padding: 0.2rem 0.6rem;
  }
}

/* ===========================
   Experience Page
   =========================== */

.experience-card {
  background: var(--color-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border: 1px solid var(--color-border);
}

.experience-card h3 {
  margin: 0 0 var(--spacing-xs) 0;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-text);
}

.experience-timeline {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

.experience-timeline-date {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.experience-timeline-location {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.experience-timeline-separator {
  color: var(--color-text-secondary);
}

.experience-responsibilities {
  margin-bottom: var(--spacing-md);
}

.experience-responsibilities ul {
  margin: 0;
  padding-left: var(--spacing-lg);
}

.experience-responsibilities li {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
  line-height: 1.6;
}

.experience-tech {
  background: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-top: var(--spacing-md);
}

.experience-tech-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.experience-tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: var(--spacing-xs);
}

.tech-tag {
  background: var(--color-bg);
  color: var(--color-text);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  font-size: 0.85rem;
  border: 1px solid var(--color-border);
  font-weight: 500;
}

/* ===========================
   Utilities
   =========================== */

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

.mt-0 {
  margin-top: 0 !important;
}

.mb-0 {
  margin-bottom: 0 !important;
}