/* ==========================================================================
   COLOR PALETTE
   ========================================================================== */
/* CSS custom properties for consistent theming throughout the site */
:root {
  --blue-1: #355C7D;  /* Lapis Lazuli - Primary blue for buttons, headers */
  --yellow: #FFC857;  /* Golden Yellow - Accent color, highlights */
  --grey-1: #E5E5E5;  /* Platinum - Light borders, subtle elements */
  --grey-2: #A8B0B9;  /* French Grey - Secondary text, metadata */
  --grey-3: #2E2E2E;  /* Jet - Primary text color */
  --night-1: #060A0E;  /* Night - Primary writing color */
}

/* ==========================================================================
   GOOGLE FONTS IMPORT
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
/* Basic CSS reset and global element styling */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ==========================================================================
   TYPOGRAPHY & LAYOUT
   ========================================================================== */
/* Global typography settings and main layout container */
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--grey-3);
  background: linear-gradient(180deg, var(--yellow) 0%, var(--blue-1) 100%);
  background-attachment: fixed;
}

/* Main content container with responsive width */
.container { width: min(1100px, 92%); margin: 0 auto; }

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
/* Sticky header with glassmorphism effect and navigation */
.site-header { 
  position: sticky; 
  top: 0; 
  z-index: 10; 
  background: rgba(11,19,43,0.9); 
  backdrop-filter: blur(6px); 
  border-bottom: 1px solid rgba(255,255,255,0.06); 
}
.header-inner { 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  padding: 14px 0; 
}
.brand { 
  color: #fff; 
  font-weight: 700; 
  letter-spacing: 0.3px; 
}
.nav a { 
  color: #cfd6ff; 
  margin-left: 18px; 
  padding: 8px 10px; 
  border-radius: 8px; 
  transition: background .2s ease; 
}
.nav a:hover { 
  background: rgba(255,255,255,0.08); 
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
/* Site footer with subtle styling */
.site-footer { 
  margin-top: 60px; 
  padding: 30px 0; 
  color: #c9d0da; 
  background: rgba(255,255,255,0.04); 
  border-top: 1px solid rgba(255,255,255,0.06); 
}
.footer-inner { 
  display: flex; 
  align-items: center; 
  justify-content: center; 
}

/* ==========================================================================
   HOMEPAGE HERO SECTION
   ========================================================================== */
/* Main hero area on homepage with title and subtitle */
.home-hero { 
  text-align: center; 
  color: var(--night-1); 
  padding: 42px 0 10px; 
}
.home-title { 
  font-size: 40px; 
  margin: 0; 
  color: var(--night-1);
}
.home-subtitle { 
  color: var(--night-1); 
  margin: 8px 0 0; 
}

/* ==========================================================================
   POSTS GRID LAYOUT
   ========================================================================== */
/* Responsive grid system for displaying blog post cards */
.posts-grid { 
  margin-top: 24px; 
}
.grid { 
  display: grid; 
  grid-template-columns: 1fr; 
  gap: 22px; 
  max-width: 800px;
  margin: 0 auto;
}

/* Responsive design for mobile */
@media (max-width: 768px) {
  .grid {
    max-width: 100%;
    padding: 0 16px;
  }
  
  .post-card {
    flex-direction: column !important;
    min-height: auto;
  }
  
  .post-media {
    width: 100% !important;
    height: 200px !important;
    flex-shrink: 1 !important;
  }
}

/* ==========================================================================
   POST CARDS
   ========================================================================== */
/* Individual post card styling with hover effects */
.post-card { 
  background: #ffffff; 
  border-radius: 14px; 
  overflow: hidden; 
  border: 1px solid var(--grey-1); 
  box-shadow: 0 10px 30px rgba(0,0,0,0.18); 
  transition: transform .2s ease, box-shadow .2s ease; 
  display: flex;
  flex-direction: row;
  min-height: 200px;
}
.post-card:hover { 
  transform: translateY(-3px); 
  box-shadow: 0 16px 40px rgba(0,0,0,0.22); 
}

/* Post card media (images) with fallback gradient */
.post-media { 
  display: block; 
  width: 300px;
  flex-shrink: 0;
  background: var(--blue-1); 
  overflow: hidden;
  position: relative;
}
.post-media img { 
  width: 100%; 
  height: 100%; 
  object-fit: cover; 
  transition: transform 0.3s ease;
}
.post-media:hover img {
  transform: scale(1.05);
}
.media-fallback { 
  width: 100%; 
  height: 100%; 
  background: linear-gradient(135deg, var(--blue-1), var(--yellow)); 
}

/* Post card content area */
.post-content { 
  padding: 20px 24px; 
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  justify-content: space-between;
}
.post-title { 
  margin: 0 0 6px; 
  font-size: 20px; 
  color: var(--night-1); 
}
.post-meta { 
  color: var(--night-1); 
  font-size: 13px; 
  margin-bottom: 8px; 
}
.post-excerpt { 
  color: #3a3a3a; 
  margin: 0 0 12px; 
  line-height: 1.55; 
  flex-grow: 1;
}

/* Button wrapper to push button to bottom */
.post-button-wrapper {
  margin-top: auto;
  padding-top: 8px;
}
/* ==========================================================================
   READ ARTICLE BUTTON
   ========================================================================== */
/* Enhanced "Read Article" button with gradient and hover effects */
.post-link { 
  display: inline-block; 
  color: #ffffff; 
  background: linear-gradient(135deg, var(--blue-1), var(--night-1)); 
  font-weight: 600; 
  padding: 12px 20px; 
  border-radius: 12px; 
  box-shadow: 0 6px 20px rgba(53, 92, 125, 0.3); 
  transition: all 0.3s ease; 
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 14px;
}
.post-link:hover { 
  transform: translateY(-2px); 
  box-shadow: 0 8px 25px rgba(53, 92, 125, 0.4);
  background: linear-gradient(135deg, var(--night-1), var(--blue-1));
}
.post-link:active { 
  transform: translateY(0px); 
  box-shadow: 0 4px 15px rgba(53, 92, 125, 0.3);
}

/* ==========================================================================
   INDIVIDUAL POST PAGES
   ========================================================================== */
/* Hero image section for individual blog posts */
.post-hero { 
  aspect-ratio: 21/9; 
  background: var(--blue-1); 
  border-radius: 16px; 
  overflow: hidden; 
  border: 1px solid var(--grey-1); 
  box-shadow: 0 14px 40px rgba(0,0,0,0.25); 
  margin: 18px 0 22px; 
}
.post-hero img { 
  width: 100%; 
  height: 100%; 
  object-fit: cover; 
}

/* Post header with title and metadata */
.post-header { 
  color: #fff; 
  margin: 6px 0 8px; 
}
.post-header .post-title { 
  color: var(--night-1); 
  font-size: 38px; 
  margin-bottom: 6px; 
}
.post-header .post-meta { 
  color: var(--night-1); 
}

/* Main post content area with white background */
.post-body { 
  background: #ffffff; 
  color: var(--night-1); 
  border-radius: 16px; 
  border: 1px solid var(--grey-1); 
  padding: 22px; 
  box-shadow: 0 10px 30px rgba(0,0,0,0.18); 
}
.post-body p { 
  line-height: 1.75; 
}
.post-body h2, .post-body h3 { 
  color: var(--night-1); 
}
.post-body pre, .post-body code { 
  background: #0f1430; 
  color: #eaf0ff; 
  border-radius: 8px; 
  padding: 3px 6px; 
}
.post-body pre { 
  padding: 12px; 
  overflow: auto; 
}

/* ==========================================================================
   COLLAPSIBLE CODE BLOCKS
   ========================================================================== */
/* Interactive collapsible sections for code examples in posts */
.post-body details { 
  margin: 16px 0; 
  display: block;
}
.post-body details summary { 
  cursor: pointer; 
  padding: 8px 12px; 
  background: var(--blue-1); 
  color: white; 
  border-radius: 80px; 
  font-weight: 600;
  transition: background 0.2s ease;
  display: inline-block;
  user-select: none;
}
.post-body details summary:hover { 
  background: var(--night-1); 
}
.post-body details[open] summary { 
  border-radius: 8px 8px 0 0; 
}
.post-body details pre { 
  margin: 0; 
  border-radius: 0 0 8px 8px; 
  line-height: 1.6;
  padding: 16px;
}

/* ==========================================================================
   POST NAVIGATION
   ========================================================================== */
/* Previous/Next post navigation links */
.post-nav { 
  display: flex; 
  justify-content: space-between; 
  margin: 18px 0 8px; 
}
.post-nav a { 
  color: #eaf0ff; 
  background: rgba(255,255,255,0.08); 
  padding: 8px 12px; 
  border-radius: 10px; 
  border: 1px solid rgba(255,255,255,0.12); 
}

/* ==========================================================================
   IMAGE STYLING
   ========================================================================== */
/* Center images in post content */
.post-body img {
  display: block;
  margin: 20px auto;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: rgba(0, 0, 0, 0.3) 0px 19px 38px, rgba(0, 0, 0, 0.22) 0px 15px 12px;
}

/* Image size utilities */
.post-body .img-small { max-width: 40%; }
.post-body .img-medium { max-width: 60%; }
.post-body .img-large { max-width: 80%; }
.post-body .img-full { max-width: 100%; }

/* Thumbnail size utilities */
.post-media.thumb-small { aspect-ratio: 4/3; }
.post-media.thumb-medium { aspect-ratio: 16/9; }
.post-media.thumb-large { aspect-ratio: 21/9; }
.post-media.thumb-square { aspect-ratio: 1/1; }


/* ==========================================================================
   TEXT HIGHLIGHTING & IMPORTANCE
   ========================================================================== */
/* Highlighting effects for important text content */
/* To use the callout, use the following code:
<div class="callout">
  Hello World
</div>
*/
.post-body .callout {
  background: rgba(255, 200, 87, 0.1);
  border: 2px solid var(--yellow);
  border-radius: 12px;
  padding: 16px;
  margin: 16px 0;
  position: relative;
}

.post-body .callout p {
  margin: 0;
  color: var(--night-1);
  font-weight: 500;
}

/* Vertical bar highlight effect */
.post-body .story-bar {
  background: var(--grey-1);
  border-left: 8px solid var(--blue-1);
  padding: 12px 16px;
  margin: 12px 0;
  border-radius: 0 12px 12px 0;
  position: relative;
}

.post-body .story-bar p {
  margin: 0;
  color: var(--night-1);
  font-weight: 500;
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */
/* General utility classes for spacing and layout */
.site-main { 
  padding: 18px 0 40px; 
}