/* 
 * Hugo Nord Blog Theme
 * A clean, minimal theme using the Nord color palette
 * https://www.nordtheme.com/
 */

/* ========================================
   CSS Custom Properties (Nord Colors)
   ======================================== */
:root {
  /* Polar Night (dark colors) */
  --nord0: #2E3440;
  --nord1: #3B4252;
  --nord2: #434C5E;
  --nord3: #4C566A;
  
  /* Snow Storm (light colors) */
  --nord4: #D8DEE9;
  --nord5: #E5E9F0;
  --nord6: #ECEFF4;
  
  /* Frost (blue accents) */
  --nord7: #8FBCBB;
  --nord8: #88C0D0;
  --nord9: #81A1C1;
  --nord10: #5E81AC;
  
  /* Aurora (colorful accents) */
  --nord11: #BF616A; /* red */
  --nord12: #D08770; /* orange */
  --nord13: #EBCB8B; /* yellow */
  --nord14: #A3BE8C; /* green */
  --nord15: #B48EAD; /* purple */
  
  /* Light mode (Snow Storm background) */
  --bg-primary: var(--nord6);
  --bg-secondary: var(--nord5);
  --bg-tertiary: var(--nord4);
  --text-primary: var(--nord0);
  --text-secondary: var(--nord1);
  --text-muted: var(--nord3);
  --accent: var(--nord10);
  --accent-hover: var(--nord9);
  --border: var(--nord4);
  --code-bg: var(--nord5);
  --shadow: rgba(46, 52, 64, 0.1);
}

[data-theme="dark"] {
  /* Dark mode (Polar Night background) */
  --bg-primary: var(--nord0);
  --bg-secondary: var(--nord1);
  --bg-tertiary: var(--nord2);
  --text-primary: var(--nord6);
  --text-secondary: var(--nord5);
  --text-muted: var(--nord4);
  --accent: var(--nord8);
  --accent-hover: var(--nord7);
  --border: var(--nord2);
  --code-bg: var(--nord1);
  --shadow: rgba(0, 0, 0, 0.3);
}

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

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

body {
  font-family: 'Source Code Pro', 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Textured background overlay using SVG noise */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  opacity: 0.1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='10' numOctaves='8' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

[data-theme="dark"] body::before {
  opacity: 0.15;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p {
  margin-bottom: 1.25rem;
}

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* ========================================
   Layout
   ======================================== */
.container {
  width: 100%;
  max-width: 750px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

main {
  flex: 1;
  padding: 2rem 0;
}

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.site-title:hover {
  color: var(--accent);
  text-decoration: none;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 1.5rem;
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  background-color: var(--bg-tertiary);
  border-radius: 0.5rem;
  padding: 0.25rem;
  gap: 0.25rem;
}

.nav-tab {
  padding: 0.4rem 1rem;
  border-radius: 0.375rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary) !important;
  transition: all 0.2s ease;
}

.nav-tab:hover {
  color: var(--text-primary) !important;
  background-color: var(--bg-secondary);
  text-decoration: none;
}

.nav-tab.active {
  background-color: var(--accent);
  color: var(--bg-primary) !important;
  font-weight: 600;
}

.nav-tab.active:hover {
  background-color: var(--accent-hover);
  color: var(--bg-primary) !important;
}

/* Header Right Section */
.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Header Social Links */
.header-social {
  display: flex;
  gap: 0.25rem;
}

.header-social a {
  padding: 0.35rem;
}

.header-social svg {
  width: 1.15rem;
  height: 1.15rem;
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.375rem;
  transition: background-color 0.2s ease;
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
}

.theme-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

.theme-toggle .sun-icon {
  display: none;
}

.theme-toggle .moon-icon {
  display: block;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: none;
}

/* ========================================
   Post List (Homepage)
   ======================================== */
.post-list {
  list-style: none;
}

.post-item {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

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

.post-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.post-title a {
  color: var(--text-primary);
}

.post-title a:hover {
  color: var(--accent);
  text-decoration: none;
}

.post-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.post-date {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.post-excerpt {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* H2 headings inside excerpts (from blog content) - make them smaller/subtler */
.post-excerpt h2 {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.post-excerpt h3 {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 0.75rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.read-more {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ========================================
   Tags
   ======================================== */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: 0.25rem;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.tag:hover {
  background-color: var(--accent);
  color: var(--bg-primary);
  text-decoration: none;
}

/* ========================================
   Single Post
   ======================================== */
.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.post-header .post-title {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.post-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.post-content h2 {
  margin-top: 2rem;
  padding-top: 1rem;
}

.post-content h3 {
  margin-top: 1.5rem;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin: 1.5rem 0;
}

.post-content blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1rem;
  /*padding-left: 1.5rem;*/
  list-style-position: inside;
}

.post-content li {
  margin-bottom: 0.5rem;
}

/* Excerpt lists on homepage */
.post-excerpt ul,
.post-excerpt ol {
  margin-bottom: 1rem;
  /*padding-left: 1.5rem;*/
  list-style-position: inside;
}

.post-excerpt li {
  margin-bottom: 0.25rem;
}

/* Excerpt code blocks on homepage */
.post-excerpt code {
  font-family: 'Source Code Pro', 'JetBrains Mono', 'Fira Code', monospace;
  background-color: var(--code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.9em;
}

.post-excerpt pre {
  background-color: var(--code-bg);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 1rem 0;
}

.post-excerpt pre code {
  background: none;
  padding: 0;
}

.post-excerpt .highlight {
  margin: 1rem 0;
  border-radius: 0.5rem;
  overflow: hidden;
}

.post-excerpt .highlight pre {
  margin: 0;
  border-radius: 0;
}

.post-content code {
  font-family: 'Source Code Pro', 'JetBrains Mono', 'Fira Code', monospace;
  background-color: var(--code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.9em;
}

.post-content pre {
  background-color: var(--code-bg);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.post-content pre code {
  background: none;
  padding: 0;
}

/* ========================================
   Archive Page
   ======================================== */
.archive-year {
  margin-top: 2rem;
}

.archive-year:first-child {
  margin-top: 0;
}

.archive-year h2 {
  font-size: 1.25rem;
  color: var(--accent);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.archive-list {
  list-style: none;
}

.archive-item {
  padding: 0.5rem 0;
  display: flex;
  gap: 1rem;
  align-items: baseline;
}

.archive-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 5rem;
}

.archive-title {
  color: var(--text-primary);
}

.archive-title:hover {
  color: var(--accent);
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.pagination a,
.pagination span {
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-size: 0.9rem;
}

.pagination a {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.pagination a:hover {
  background-color: var(--accent);
  color: var(--bg-primary);
  text-decoration: none;
}

.pagination .current {
  background-color: var(--accent);
  color: var(--bg-primary);
}

.pagination .disabled {
  color: var(--text-muted);
  cursor: not-allowed;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

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

.social-links a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  border-radius: 0.375rem;
}

.social-links a:hover {
  color: var(--accent);
  background-color: var(--bg-tertiary);
}

.social-links svg {
  width: 1.5rem;
  height: 1.5rem;
}

.copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 600px) {
  html {
    font-size: 15px;
  }
  
  .header-inner {
    flex-wrap: wrap;
    gap: 1rem;
  }
  
  .main-nav {
    gap: 0.75rem;
  }
  
  .nav-tabs {
    padding: 0.2rem;
  }
  
  .nav-tab {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
  }
  
  .post-header .post-title {
    font-size: 1.5rem;
  }
  
  .archive-item {
    flex-direction: column;
    gap: 0.25rem;
  }
  
  .archive-date {
    min-width: auto;
  }
}

/* ========================================
   Syntax Highlighting (Nord-based)
   ======================================== */
.highlight {
  margin: 1.5rem 0;
  border-radius: 0.5rem;
  overflow: hidden;
}

.highlight pre {
  margin: 0;
  border-radius: 0;
}

/* Hugo Chroma syntax highlighting with Nord colors */
.chroma {
  background-color: var(--code-bg);
}

.chroma .ln { color: var(--text-muted); } /* Line numbers */
.chroma .k { color: var(--nord9); } /* Keyword */
.chroma .kc { color: var(--nord9); } /* KeywordConstant */
.chroma .kd { color: var(--nord9); } /* KeywordDeclaration */
.chroma .kn { color: var(--nord9); } /* KeywordNamespace */
.chroma .kp { color: var(--nord9); } /* KeywordPseudo */
.chroma .kr { color: var(--nord9); } /* KeywordReserved */
.chroma .kt { color: var(--nord9); } /* KeywordType */
.chroma .na { color: var(--nord8); } /* NameAttribute */
.chroma .nb { color: var(--nord8); } /* NameBuiltin */
.chroma .nc { color: var(--nord7); } /* NameClass */
.chroma .no { color: var(--nord7); } /* NameConstant */
.chroma .nd { color: var(--nord12); } /* NameDecorator */
.chroma .nf { color: var(--nord8); } /* NameFunction */
.chroma .nn { color: var(--nord7); } /* NameNamespace */
.chroma .nt { color: var(--nord9); } /* NameTag */
.chroma .nv { color: var(--nord4); } /* NameVariable */
.chroma .s { color: var(--nord14); } /* String */
.chroma .sa { color: var(--nord14); } /* StringAffix */
.chroma .sb { color: var(--nord14); } /* StringBacktick */
.chroma .sc { color: var(--nord14); } /* StringChar */
.chroma .dl { color: var(--nord14); } /* StringDelimiter */
.chroma .sd { color: var(--nord14); } /* StringDoc */
.chroma .s2 { color: var(--nord14); } /* StringDouble */
.chroma .se { color: var(--nord13); } /* StringEscape */
.chroma .sh { color: var(--nord14); } /* StringHeredoc */
.chroma .si { color: var(--nord14); } /* StringInterpol */
.chroma .sx { color: var(--nord14); } /* StringOther */
.chroma .sr { color: var(--nord13); } /* StringRegex */
.chroma .s1 { color: var(--nord14); } /* StringSingle */
.chroma .ss { color: var(--nord14); } /* StringSymbol */
.chroma .m { color: var(--nord15); } /* Number */
.chroma .mb { color: var(--nord15); } /* NumberBin */
.chroma .mf { color: var(--nord15); } /* NumberFloat */
.chroma .mh { color: var(--nord15); } /* NumberHex */
.chroma .mi { color: var(--nord15); } /* NumberInteger */
.chroma .il { color: var(--nord15); } /* NumberIntegerLong */
.chroma .mo { color: var(--nord15); } /* NumberOct */
.chroma .o { color: var(--nord9); } /* Operator */
.chroma .ow { color: var(--nord9); } /* OperatorWord */
.chroma .c { color: var(--nord3); font-style: italic; } /* Comment */
.chroma .ch { color: var(--nord3); font-style: italic; } /* CommentHashbang */
.chroma .cm { color: var(--nord3); font-style: italic; } /* CommentMultiline */
.chroma .c1 { color: var(--nord3); font-style: italic; } /* CommentSingle */
.chroma .cs { color: var(--nord3); font-style: italic; } /* CommentSpecial */
.chroma .cp { color: var(--nord10); } /* CommentPreproc */
.chroma .cpf { color: var(--nord10); } /* CommentPreprocFile */
.chroma .gd { color: var(--nord11); } /* GenericDeleted */
.chroma .gi { color: var(--nord14); } /* GenericInserted */
.chroma .ge { font-style: italic; } /* GenericEmph */
.chroma .gs { font-weight: bold; } /* GenericStrong */