:root {
  --font-serif: 'Libre Baskerville', serif;
  --font-sans: 'Inter', sans-serif;
  --color-text-main: #222;
  --color-text-light: #666;
  --color-accent: #C4B287; /* The gold/tan color */
  --color-border: #eaeaea;
  --max-width: 800px; /* Standard readable width */
  --width-wide: 1200px; /* For Nav/Footer */
}

/* --- BASE & RESET --- */
body {
  margin: 0;
  padding: 0;
  background-color: #fff;
  color: var(--color-text-main);
  font-family: var(--font-serif);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { 
  color: inherit; 
  text-decoration: none; 
  transition: color 0.2s ease;
}

/* --- NAVIGATION (New functionality) --- */
.site-nav {
  padding: 20px 0;
  border-bottom: 1px solid transparent;
  font-family: var(--font-sans);
  /* Optional: Keep it absolute to float over white parts, 
     or relative to sit above. Let's use relative for safety. */
  position: relative; 
  z-index: 10;
}

.site-nav .container {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.5px;
  color: #000;
}

.nav-links a {
  margin-left: 25px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
}

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

/* --- THE HERO SECTION (Your Custom Logic) --- */
.post-header {
  position: relative;
  width: 100%;
  min-height: 65vh; 
  display: flex;
  align-items: center;
  
    /* STACKING ORDER: Left Fade -> Bottom Fade -> Image */
    background-image:
        linear-gradient(to top,
            #ffffff 0%,
            rgba(255, 255, 255, 0.75) 17.5%,
            rgba(255, 255, 255, 0) 35%),
        linear-gradient(90deg, #ffffff 15%, rgba(255, 255, 255, 0.95) 45%, rgba(255, 255, 255, 0) 100%),
        var(--hero-bg);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  margin-bottom: 3rem; /* Spacing before content starts */
}

.header-content {
  max-width: var(--max-width);
  margin-left: 10%; 
  padding-right: 20px;
  z-index: 2; 
}

/* Typography Styling */
.super-title {
  font-family: var(--font-serif);
  font-variant: small-caps;
  color: var(--color-text-light);
  letter-spacing: 1px;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.entry-title {
  font-size: 4rem; /* Massive title */
  line-height: 1.1;
  font-weight: 400; 
  margin: 0 0 1rem 0;
  color: #111;
}

.entry-subtitle {
  font-size: 1.8rem;
  line-height: 1.3;
  font-weight: 400;
  font-style: italic;
  color: #444;
  margin: 0 0 2rem 0;
  opacity: 0.9;
}

.meta-data {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* The Gold Badge Style */
.review-badge {
  display: inline-block;
  margin-top: 2rem;
  background-color: var(--color-accent);
  color: white;
  padding: 6px 12px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* --- POST CONTENT STYLING --- */

.post-content {
  max-width: var(--max-width);
  margin: 0 auto 4rem auto;
  padding: 0 20px;
  font-size: 1.2rem; 
}

/* Standard paragraphs */
.post-content p {
  margin-bottom: 1.5rem;
}

/* Headings inside posts */
.post-content h2 {
  font-family: var(--font-sans);
  font-size: 1.8rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
  color: #111;
}

.post-content h3 {
  font-family: var(--font-sans);
  font-size: 1.4rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

/* Links inside posts */
.post-content a {
  color: #000;
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 3px;
  transition: all 0.2s ease;
}

.post-content a:hover {
  text-decoration-color: #000;
  background-color: rgba(196, 178, 135, 0.1);
}

/* Blockquotes */
.post-content blockquote {
  border-left: 4px solid var(--color-accent);
  margin: 2rem 0;
  padding-left: 25px;
  font-style: italic;
  color: #555;
  background: #fafafa;
  padding: 20px 25px;
}

/* Images & Figures */
.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 2px;
}

figure {
  margin: 2.5rem 0;
  text-align: center;
}

figcaption {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 10px;
}

/* Lists */
.post-content ul, .post-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}
.post-content li {
  margin-bottom: 0.5rem;
}

/* Divider */
hr {
  border: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, #ddd, transparent);
  margin: 3rem auto;
  max-width: 200px;
}

/* --- POST NAVIGATION (Next Story) --- */
.post-navigation {
  max-width: var(--max-width);
  margin: 0 auto 3rem auto;
  padding: 0 20px;
  text-align: center;
}

.next-story span {
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 1px;
  color: var(--color-text-light);
}

.next-story a h3 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  margin-top: 10px;
  color: var(--color-text-main);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color 0.3s ease;
}

.next-story a:hover h3 {
  text-decoration-color: var(--color-accent);
}

/* --- COMMENTS --- */
.comments {
  max-width: var(--max-width);
  margin: 0 auto 4rem auto;
  padding: 0 20px;
}

/* --- FOOTER --- */
.site-footer {
  background-color: #fafafa;
  padding: 60px 0;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text-light);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

/* Ensure Footer Container matches Navbar alignment exactly */
.site-footer .container {
  max-width: var(--width-wide); /* Matches .site-nav .container width */
  margin: 0 auto;             /* Centers the content */
  padding: 0 20px;            /* Matches .site-nav .container padding */
  box-sizing: border-box;     /* Ensures padding doesn't affect width */
}

.footer-meta {
  margin-bottom: 20px;
}

.email-code tt {
  background: #fff;
  border: 1px solid #eee;
  padding: 3px 6px;
  border-radius: 3px;
  font-size: 0.85em;
  color: #333;
}

/* Protect Footer Links from external page styles */
.site-footer a:not(.social-links a) {
  color: inherit;              /* Force it to use the footer's gray color */
  text-decoration: none;       /* Remove underline by default */
  font-weight: 600;            /* Optional: make the author name pop slightly */
  border-bottom: 1px solid transparent; /* Prepare for hover effect */
  transition: all 0.2s ease;
}

.site-footer a:not(.social-links a):hover {
  color: var(--color-accent);  /* Gold on hover */
  border-bottom-color: var(--color-accent); /* Optional: Underline on hover */
}

/* --- FOOTER SOCIAL ICONS --- */
.social-links {
  margin: 20px 0;
  display: flex;
  justify-content: center;
  gap: 25px; /* Space between icons */
}

.social-links a {
  color: var(--color-text-light); /* Start gray */
  font-size: 1.2rem;              /* Icon size */
  transition: all 0.2s ease;
  display: inline-block;
  text-decoration: none;          /* Remove underline */
  border: none;                   /* Remove any border from previous link styles */
}

.social-links a:hover {
  color: var(--color-accent);     /* Gold/Tan on hover */
  transform: translateY(-2px);    /* Slight lift effect */
}

.copyright {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* --- MOBILE RESPONSIVENESS (Your Custom Logic) --- */
@media (max-width: 768px) {
  .post-header {
    min-height: 60vh; 
    align-items: flex-end; 
    padding: 0 0 2rem 0; 
    
    background-image: 
      linear-gradient(to top, #ffffff 0%, #ffffff 40%, rgba(255,255,255,0) 85%),
      var(--hero-bg);
      
    background-position: center top; 
  }
  
  .header-content { 
    margin-left: 0;
    padding: 0 20px;
    max-width: 100%; 
  }

  .entry-title { 
    font-size: 2.5rem; 
  }
  .entry-subtitle { 
    font-size: 1.4rem; 
    margin: 0 0 1rem 0;
  }
  
  .site-nav .container {
    padding: 0 15px;
  }
  
  .nav-links a {
    margin-left: 15px;
  }
}

/* --- MATHJAX FIXES --- */

/* 1. Force container to respect parent width */
mjx-container[display="true"] {
  display: block;
  overflow-x: auto;       /* Adds scrollbar if too wide */
  overflow-y: hidden;
  max-width: 100%;
  padding: 10px 0;        /* Space for the scrollbar */
}

/* 2. Optional: Adjust font size slightly on very small screens */
@media (max-width: 480px) {
  mjx-container {
    font-size: 0.9em !important;
  }
}

.tags-list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px; /* Spacing between tags */
  align-items: center;
  /* Use vertical-align to fix small alignment shifts if needed */
  vertical-align: middle; 
}

.tag-pill {
  font-family: var(--font-sans);
  font-size: 0.75rem; /* Smaller than body text */
  font-weight: 500;
  color: var(--color-text-light); /* #666 */
  background-color: #f2f2f2;      /* Very light gray background */
  padding: 3px 8px;               /* Breathing room inside the pill */
  border-radius: 4px;             /* Soft corners */
  letter-spacing: 0.3px;
  white-space: nowrap;            /* Keeps "Math Puzzles" on one line */
  transition: all 0.2s ease;
  cursor: default;                /* Or 'pointer' if you make them links later */
}

/* Optional: Add a subtle hover effect using your gold accent color */
.tag-pill:hover {
  color: var(--color-accent);
  background-color: rgba(196, 178, 135, 0.15); /* Low opacity gold */
}