/* ==========================================================================
   Terminal Elegance Theme
   A sophisticated dark theme for technical/AI content
   ========================================================================== */

/* --- CSS Custom Properties --- */
:root {
  /* Core palette - softer dark */
  --bg-deep: #1a1f2e;
  --bg-surface: #232936;
  --bg-elevated: #2a3142;
  --bg-hover: #323848;

  /* Text hierarchy */
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;

  /* Accent - electric cyan */
  --accent: #00d4ff;
  --accent-dim: #00a8cc;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --accent-glow-strong: rgba(0, 212, 255, 0.3);

  /* Secondary accent - warm amber for contrast */
  --accent-warm: #ffb347;

  /* Semantic colors */
  --border-default: #21262d;
  --border-muted: #161b22;

  /* Typography */
  --font-display: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  --font-body: 'Crimson Pro', 'Georgia', serif;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Animation */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* --- Base Reset & Background --- */
html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body) !important;
  background: var(--bg-deep) !important;
  color: var(--text-primary) !important;
  line-height: 1.7;
  letter-spacing: 0.01em;
  position: relative;
  min-height: 100vh;
}

/* Noise texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.03;
  z-index: 9999;
  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='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Subtle grid pattern */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.02;
  z-index: 9998;
  background-image:
    linear-gradient(var(--accent) 1px, transparent 1px),
    linear-gradient(90deg, var(--accent) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display) !important;
  font-weight: 500 !important;
  color: var(--text-primary);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 2.5rem !important;
}

h2 {
  font-size: 1.75rem !important;
  margin-top: 3rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-default);
}

h2::before {
  content: '## ';
  color: var(--accent);
  opacity: 0.5;
}

h3 {
  font-size: 1.35rem !important;
  color: var(--accent);
}

h3::before {
  content: '### ';
  opacity: 0.4;
}

p {
  margin: 1.5rem 0;
  color: var(--text-primary);
}

/* --- Links --- */
a {
  color: var(--accent) !important;
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

a:hover,
a:focus {
  color: var(--accent) !important;
  text-shadow: 0 0 20px var(--accent-glow-strong);
}

/* Underline animation for content links */
.blog-post a:not(.post-read-more),
.post-entry a {
  background: linear-gradient(var(--accent), var(--accent)) no-repeat;
  background-size: 0% 1px;
  background-position: 0 100%;
  transition: background-size var(--transition-base);
}

.blog-post a:hover,
.post-entry a:hover {
  background-size: 100% 1px;
}

/* --- Navigation --- */
.navbar-custom {
  background: rgba(10, 14, 23, 0.85) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-default) !important;
  padding: 1rem 0 !important;
}

.navbar-custom .navbar-brand {
  font-family: var(--font-display) !important;
  font-weight: 600 !important;
  font-size: 1.25rem !important;
  color: var(--text-primary) !important;
  letter-spacing: -0.02em;
}

.navbar-custom .navbar-brand::before {
  content: '> ';
  color: var(--accent);
  margin-left: 0.5rem;
}

.navbar-custom .navbar-nav .nav-link {
  font-family: var(--font-ui) !important;
  font-size: 0.85rem !important;
  font-weight: 500 !important;
  color: var(--text-secondary) !important;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.5rem 1rem !important;
  transition: all var(--transition-fast);
}

.navbar-custom .navbar-nav .nav-link:hover {
  color: var(--accent) !important;
}

/* Mobile nav */
.navbar-toggler {
  border: 1px solid var(--border-default) !important;
  padding: 0.5rem 0.75rem !important;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300d4ff' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* --- Page Headers --- */
.intro-header {
  margin-top: 6rem !important;
  margin-bottom: 3rem !important;
}

.intro-header .page-heading h1,
.intro-header .post-heading h1 {
  font-family: var(--font-display) !important;
  font-weight: 500 !important;
  color: var(--text-primary);
  position: relative;
}


/* Cover image overlay for better text readability */
.intro-header.big-img::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    to bottom,
    rgba(26, 31, 46, 0.5) 0%,
    rgba(26, 31, 46, 0.7) 50%,
    rgba(26, 31, 46, 0.85) 100%
  );
  z-index: 1;
}

.intro-header.big-img .page-heading,
.intro-header.big-img .post-heading {
  position: relative;
  z-index: 2;
}

.intro-header.big-img .page-heading h1,
.intro-header.big-img .post-heading h1 {
  color: #fff !important;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.intro-header.big-img .post-heading .post-subheading {
  color: rgba(255, 255, 255, 0.9) !important;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.5);
}

.intro-header.big-img .post-heading .post-meta {
  color: rgba(255, 255, 255, 0.8) !important;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
}

.intro-header .page-heading .page-subheading,
.intro-header .post-heading .post-subheading {
  font-family: var(--font-body) !important;
  color: var(--text-secondary) !important;
  font-style: italic;
  font-size: 1.25rem !important;
  margin-top: 1rem !important;
}

.intro-header .post-heading .post-meta {
  font-family: var(--font-ui) !important;
  color: var(--text-muted) !important;
  font-style: normal !important;
  font-size: 0.9rem !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Post List / Feed --- */
.posts-list {
  padding: 0;
}

.post-preview {
  padding: 2.5rem 0 !important;
  border-bottom: 1px solid var(--border-default) !important;
  position: relative;
  transition: all var(--transition-base);
}

.post-preview::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0;
  transform: scaleY(0);
  transition: all var(--transition-base);
}

.post-preview:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.post-preview:hover {
  background: var(--bg-surface);
  padding-left: 1.5rem !important;
  margin-left: -1.5rem;
  margin-right: -1.5rem;
  padding-right: 1.5rem !important;
  border-radius: 0.5rem;
}

.post-preview a {
  color: var(--text-primary) !important;
}

.post-preview a:hover {
  color: var(--accent) !important;
  text-shadow: none;
}

.post-preview .post-title {
  font-family: var(--font-display) !important;
  font-size: 1.5rem !important;
  font-weight: 500 !important;
  margin-bottom: 0.5rem !important;
  transition: color var(--transition-fast);
}

.post-preview .post-subtitle {
  font-family: var(--font-body) !important;
  color: var(--text-secondary) !important;
  font-weight: 400 !important;
  font-style: italic;
  font-size: 1.1rem !important;
}

.post-preview .post-meta {
  font-family: var(--font-ui) !important;
  color: var(--text-muted) !important;
  font-size: 0.8rem !important;
  font-style: normal !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.post-preview .post-read-more {
  font-family: var(--font-ui) !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent) !important;
  background: none !important;
}

.post-preview .post-read-more:hover {
  text-shadow: 0 0 15px var(--accent-glow-strong);
}

/* --- Tags --- */
.blog-tags {
  font-family: var(--font-ui) !important;
  font-size: 0.8rem !important;
  margin-top: 1.5rem !important;
}

.blog-tags span {
  color: var(--text-muted) !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-tags a {
  font-family: var(--font-display) !important;
  color: var(--accent-dim) !important;
  background: var(--accent-glow) !important;
  padding: 0.25rem 0.75rem !important;
  border-radius: 2rem !important;
  border: 1px solid transparent !important;
  font-size: 0.75rem !important;
  margin-left: 0.25rem;
  transition: all var(--transition-fast);
}

.blog-tags a:hover {
  border-color: var(--accent) !important;
  box-shadow: 0 0 15px var(--accent-glow);
}

/* --- Blog Post Content --- */
.blog-post {
  font-size: 1.1rem;
  line-height: 1.8;
}

.blog-post > *:first-child {
  margin-top: 0;
}

/* Lists */
.blog-post ul,
.blog-post ol {
  padding-left: 1.5rem;
}

.blog-post li {
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.blog-post li::marker {
  color: var(--accent);
}

/* Blockquotes */
.blog-post blockquote {
  border-left: 3px solid var(--accent) !important;
  background: var(--bg-surface);
  padding: 1.5rem 2rem !important;
  margin: 2rem 0 !important;
  border-radius: 0 0.5rem 0.5rem 0;
  font-style: italic;
  color: var(--text-secondary) !important;
}

.blog-post blockquote p {
  margin: 0;
}

/* Horizontal rules */
.blog-post hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 3rem 0;
  max-width: 100% !important;
}

/* --- Code Blocks --- */
code {
  font-family: var(--font-display) !important;
  font-size: 0.9em !important;
  background: var(--bg-elevated) !important;
  color: var(--accent-warm) !important;
  padding: 0.2em 0.5em !important;
  border-radius: 4px !important;
  border: 1px solid var(--border-default);
}

pre {
  background: var(--bg-surface) !important;
  border: 1px solid var(--border-default) !important;
  border-radius: 0.5rem !important;
  padding: 1.5rem !important;
  overflow-x: auto;
  position: relative;
}

pre code {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  color: var(--text-primary) !important;
  font-size: 0.9rem !important;
  line-height: 1.6;
}

/* Code block decoration */
.highlight > pre {
  border-left: 3px solid var(--accent) !important;
  background-image: none !important;
}

.highlight > pre::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0.3;
}

/* Syntax highlighting adjustments */
.highlight .k,
.highlight .kd,
.highlight .kn,
.highlight .kp,
.highlight .kr,
.highlight .kt { color: #ff7b72; } /* Keywords */
.highlight .s,
.highlight .s1,
.highlight .s2 { color: #a5d6ff; } /* Strings */
.highlight .c,
.highlight .c1,
.highlight .cm { color: var(--text-muted); font-style: italic; } /* Comments */
.highlight .n,
.highlight .na { color: var(--text-primary); } /* Names */
.highlight .nf { color: #d2a8ff; } /* Functions */
.highlight .nb { color: #79c0ff; } /* Built-ins */
.highlight .mi,
.highlight .mf { color: #ffa657; } /* Numbers */
.highlight .o { color: var(--accent); } /* Operators */

/* --- Tables --- */
table {
  width: 100%;
  margin: 2rem 0;
  border-collapse: collapse;
  background: var(--bg-surface);
  border-radius: 0.5rem;
  overflow: hidden;
}

table tr {
  border-top: none !important;
  background: transparent !important;
}

table tr:nth-child(2n) {
  background: var(--bg-elevated) !important;
}

table th {
  font-family: var(--font-ui) !important;
  font-weight: 600 !important;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--accent);
  background: var(--bg-elevated) !important;
  border: none !important;
  padding: 1rem !important;
}

table td {
  font-family: var(--font-body);
  border: none !important;
  border-top: 1px solid var(--border-default) !important;
  padding: 0.875rem 1rem !important;
  color: var(--text-primary);
}

/* --- Pagination --- */
.pagination .page-item .page-link {
  font-family: var(--font-ui) !important;
  background: var(--bg-surface) !important;
  color: var(--text-secondary) !important;
  border: 1px solid var(--border-default) !important;
  border-radius: 0.5rem !important;
  transition: all var(--transition-fast);
}

.pagination .page-item .page-link:hover {
  background: var(--accent) !important;
  color: var(--bg-deep) !important;
  border-color: var(--accent) !important;
  box-shadow: 0 0 20px var(--accent-glow);
}

/* --- Footer --- */
footer {
  background: var(--bg-surface) !important;
  border-top: 1px solid var(--border-default) !important;
  margin-top: 4rem !important;
  padding: 3rem 0 !important;
}

footer p.text-muted {
  color: var(--text-muted) !important;
  font-family: var(--font-ui) !important;
  font-size: 0.85rem !important;
}

footer a {
  color: var(--text-secondary) !important;
}

footer a:hover {
  color: var(--accent) !important;
}

footer .theme-by {
  font-size: 0.75rem !important;
  opacity: 0.5;
}

/* Social icons */
footer .footer-links a {
  color: var(--text-secondary) !important;
  transition: all var(--transition-fast);
}

footer .footer-links a:hover {
  color: var(--accent) !important;
  transform: translateY(-2px);
}

footer .footer-links .fa-inverse {
  color: var(--bg-deep) !important;
}

/* --- Search Overlay --- */
#beautifuljekyll-search-overlay {
  background: rgba(10, 14, 23, 0.98) !important;
}

#nav-search-input {
  font-family: var(--font-display) !important;
  background: var(--bg-surface) !important;
  color: var(--text-primary) !important;
  border: 2px solid var(--border-default) !important;
  transition: all var(--transition-base);
}

#nav-search-input:focus {
  background: var(--bg-elevated) !important;
  border-color: var(--accent) !important;
  box-shadow: 0 0 30px var(--accent-glow) !important;
}

#nav-search-input::placeholder {
  color: var(--text-muted) !important;
}

#nav-search-exit {
  color: var(--text-muted) !important;
}

#nav-search-exit:hover {
  color: var(--accent) !important;
}

#search-results-container a {
  color: var(--text-primary) !important;
}

#search-results-container a:hover {
  color: var(--accent) !important;
}

/* --- Notification Boxes --- */
.box-note,
.box-warning,
.box-error,
.box-success {
  background: var(--bg-surface) !important;
  border: 1px solid var(--border-default) !important;
  border-radius: 0.5rem !important;
  padding: 1.25rem 1.5rem !important;
}

.box-note {
  border-left: 3px solid var(--accent) !important;
}

.box-warning {
  border-left: 3px solid var(--accent-warm) !important;
}

.box-error {
  border-left: 3px solid #ff7b72 !important;
}

.box-success {
  border-left: 3px solid #3fb950 !important;
}

/* --- Selection --- */
::selection {
  background: var(--accent) !important;
  color: var(--bg-deep) !important;
}

::-moz-selection {
  background: var(--accent) !important;
  color: var(--bg-deep) !important;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --- Responsive Adjustments --- */
@media (max-width: 767px) {
  html {
    font-size: 16px;
  }

  h1 {
    font-size: 2rem !important;
  }

  h2 {
    font-size: 1.5rem !important;
  }

  .intro-header {
    margin-top: 5rem !important;
  }

  .post-preview:hover {
    padding-left: 1rem !important;
    margin-left: -1rem;
    margin-right: -1rem;
    padding-right: 1rem !important;
  }
}

/* --- Special Effects --- */

/* Glow effect on focused elements */
input:focus,
button:focus,
a:focus {
  outline: none;
}

/* Smooth fade-in for page load */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.post-preview,
.blog-post > * {
  animation: fadeIn 0.4s ease-out both;
}

.post-preview:nth-child(1) { animation-delay: 0.1s; }
.post-preview:nth-child(2) { animation-delay: 0.2s; }
.post-preview:nth-child(3) { animation-delay: 0.3s; }
.post-preview:nth-child(4) { animation-delay: 0.4s; }
.post-preview:nth-child(5) { animation-delay: 0.5s; }

/* --- About Page Styles --- */

.about-intro {
  font-size: 1.3rem;
  line-height: 1.7;
  color: var(--text-secondary);
  border-left: 3px solid var(--accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
}

/* Skill Badges */
.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.skill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  padding: 0.6rem 1.1rem;
  border-radius: 2rem;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.skill-badge:hover {
  border-color: var(--accent);
  box-shadow: 0 0 15px var(--accent-glow);
  transform: translateY(-2px);
}

.skill-badge i {
  color: var(--accent);
  font-size: 1rem;
}

/* Contact Buttons */
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.5rem 0;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  color: var(--text-primary) !important;
  padding: 0.8rem 1.5rem;
  border-radius: 0.5rem;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  text-decoration: none !important;
}

.contact-btn:hover {
  background: var(--accent) !important;
  color: var(--bg-deep) !important;
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}

.contact-btn i {
  font-size: 1.1rem;
}

/* About CTA */
.about-cta {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 0.5rem;
  padding: 1.5rem 2rem;
  margin-top: 2rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

@media (max-width: 767px) {
  .contact-links {
    flex-direction: column;
  }

  .contact-btn {
    justify-content: center;
  }
}