/* 
  Theme: Modern Hygge (V3)
  A warm, glowing, highly spaced, modern typography-driven dark mode.
*/
:root {
  /* Colors - Modern Dark (Deep warm slate) */
  --bg: #050506;
  /* Base dark background */
  --bg-warm: #0a0b0c;
  /* Slightly lighter for cards/sections */
  --bg-card: #0f1011;
  /* Darker for elevated elements */

  --glass-panel: rgba(10, 11, 12, 0.4);
  /* #0a0b0c with 40% opacity */
  --glass-card: rgba(15, 16, 17, 0.4);
  /* #0f1011 with 40% opacity */

  --text: #a0a6a8;
  /* Primary text - very soft */
  --text-muted: #6b7275;
  /* Dimmed text for meta/dates */
  --text-bright: #e2e6e8;
  /* Headings and strong emphasis */

  --accent: #d46b65;
  /* Warm, modern rust/rose */
  --accent-soft: #e2847f;
  /* Softer accent for hovers */
  --accent-pale: #eabebc;
  /* Very pale accent for italics */
  --accent-alt: #b38562;
  /* Amber highlight */

  --border: rgba(255, 255, 255, 0.08);
  /* Stronger border for structure */
  --border-warm: rgba(212, 107, 101, 0.15);
  /* Warm border */

  /* Code */
  --code-bg: #0f1011;
  --code-text: #869296;

  /* Layout Fixed Specifications */
  --sidebar-width: 250px;
  --max-content-width: 750px;
  --toc-width: 300px;
  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  /* Modern 'snappy' ease-out */

  /* Typography Variables */
  --font-reading: 'Lora', Georgia, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji", "Twemoji Mozilla", serif;
  --font-ui: var(--font-reading);
  /* Ditch sans serif. Serif only. */
  --font-mono: 'JetBrains Mono', "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
}

/* Theme: Light (Warm Paper) */
[data-theme="light"] {
  --bg: #fdfbf7;
  --bg-warm: #f6f3ea;
  --bg-card: #ffffff;

  --glass-panel: rgba(246, 243, 234, 0.4);
  --glass-card: rgba(255, 255, 255, 0.5);

  --text: #505558;
  --text-muted: #868e91;
  --text-bright: #2d3133;

  --accent: #b84a44;
  --accent-soft: #d16b65;
  --accent-pale: #985a56;
  --accent-alt: #9f663c;

  --border: rgba(0, 0, 0, 0.08);
  --border-warm: rgba(184, 74, 68, 0.15);

  --code-bg: #f4f0e6;
  --code-text: #505558;
}

/* Theme: Solarized Dark */
[data-theme="solarized-dark"] {
  --bg: #002b36;
  --bg-warm: #073642;
  --bg-card: #0c4352;

  --glass-panel: rgba(7, 54, 66, 0.4);
  --glass-card: rgba(12, 67, 82, 0.4);

  --text: #839496;
  --text-muted: #586e75;
  --text-bright: #93a1a1;

  --accent: #268bd2;
  --accent-soft: #2aa198;
  --accent-pale: #6fb5a7;
  --accent-alt: #b58900;

  --border: rgba(255, 255, 255, 0.05);
  --border-warm: rgba(38, 139, 210, 0.15);

  --code-bg: #00212b;
  --code-text: #839496;
}

/* Theme: Retro (Windows 95) */
[data-theme="retro"] {
  --bg: #008080;
  --bg-warm: #c0c0c0;
  --bg-card: #c0c0c0;

  --glass-panel: #c0c0c0;
  --glass-card: #c0c0c0;

  --text: #000;
  --text-muted: #404040;
  --text-bright: #000;

  --accent: #000080;
  --accent-soft: #0000ff;
  --accent-pale: #dfdfdf;
  --accent-alt: #808080;

  --border: #dfdfdf;
  --border-warm: #808080;

  --code-bg: #fff;
  --code-text: #000;

  --font-ui: "MS Sans Serif", "Microsoft Sans Serif", Tahoma, sans-serif;
  --font-reading: "MS Sans Serif", "Microsoft Sans Serif", Tahoma, sans-serif;
}

[data-theme="retro"] body::before,
[data-theme="retro"] .grain {
  display: none;
  /* Strip ambient effects out entirely */
}

[data-theme="retro"] .sidebar {
  border: 2px solid;
  border-color: #fff #000 #000 #fff;
  box-shadow: inset 1px 1px #dfdfdf, inset -1px -1px #808080;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: #c0c0c0;
  position: fixed;
  padding-top: 3.5rem;
  /* Space for faux header */
}

/* Simulate Windows 95 blue Title bars */
[data-theme="retro"] .sidebar::before {
  content: "Navigation";
  position: absolute;
  top: 3px;
  left: 3px;
  right: 3px;
  background: #000080;
  color: #fff;
  font-weight: bold;
  padding: 2px 4px;
  font-size: 0.85rem;
  letter-spacing: 0.2px;
}

[data-theme="retro"] .post-item a.post-link {
  border: 2px solid;
  border-color: #fff #000 #000 #fff;
  box-shadow: inset 1px 1px #dfdfdf, inset -1px -1px #808080;
  background: #c0c0c0;
  border-radius: 0;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  position: relative;
  padding-top: 2.5rem;
  /* Space for faux header */
}

[data-theme="retro"] .post-item a.post-link::before {
  content: "Document";
  position: absolute;
  top: 3px;
  left: 3px;
  right: 3px;
  background: #000080;
  color: #fff;
  font-weight: bold;
  padding: 2px 4px;
  font-size: 0.85rem;
  letter-spacing: 0.2px;
}

[data-theme="retro"] .post-item a.post-link:hover {
  transform: none;
  background: #c0c0c0;
}

[data-theme="retro"] .post-item a.post-link:hover::before {
  background: #0000ff;
  /* Light up active window */
}


/* Theme: Apple (Mac OS 9) */
[data-theme="apple"] {
  --bg: #ddddd8;
  --bg-warm: #ffffff;
  --bg-card: #ffffff;

  --glass-panel: #e5e5e0;
  --glass-card: #ffffff;

  --text: #000000;
  --text-muted: #444444;
  --text-bright: #000000;

  --accent: #0000dd;
  --accent-soft: #5555ff;
  --accent-pale: #e0e0ff;
  --accent-alt: #ff0000;

  --border: #000000;
  --border-warm: #000000;

  --code-bg: #eeeeee;
  --code-text: #000000;

  --font-reading: "Geneva", "Arial", sans-serif;
  --font-ui: "Chicago", "MS Sans Serif", sans-serif;
}

[data-theme="apple"] body::before,
[data-theme="apple"] .grain {
  display: none;
  /* No ambient fx */
}

[data-theme="apple"] .sidebar,
[data-theme="apple"] .theme-dropdown-menu {
  border: 1px solid #000;
  border-radius: 0;
  box-shadow: 2px 2px 0px #000;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: #e5e5e0;
  padding-top: 3.5rem;
}

/* Simulate Mac Drag Stripes */
[data-theme="apple"] .sidebar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 18px;
  background: repeating-linear-gradient(to bottom,
      #ffffff,
      #ffffff 1px,
      #000000 1px,
      #000000 2px);
  border-bottom: 1px solid #000;
}

[data-theme="apple"] .sidebar::after {
  content: "glitchier HD";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: #e5e5e0;
  padding: 0 10px;
  font-size: 0.8rem;
  font-family: var(--font-ui);
  border: 1px solid #000;
  border-top: none;
}

[data-theme="apple"] .post-item a.post-link {
  border: 1px solid #000;
  border-radius: 0;
  background: #fff;
  box-shadow: 2px 2px 0px #000;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  position: relative;
  padding-top: 2rem;
}

[data-theme="apple"] .post-item a.post-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 14 px;
  background: repeating-linear-gradient(to bottom,
      #ffffff,
      #ffffff 1px,
      #000000 1px,
      #000000 2px);
  border-bottom: 1px solid #000;
}

[data-theme="apple"] .post-item a.post-link:hover {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0px #000;
}

/* Theme: Crazy (Cyberpunk Neon) */
[data-theme="crazy"] {
  --bg: #090014;
  --bg-warm: #13002b;
  --bg-card: #200047;

  --glass-panel: rgba(19, 0, 43, 0.5);
  --glass-card: rgba(32, 0, 71, 0.5);

  --text: #00ffcc;
  --text-muted: #ff00ff;
  --text-bright: #ffff00;

  --accent: #ff00ff;
  --accent-soft: #ff33ff;
  --accent-pale: #00ffcc;
  --accent-alt: #ffff00;

  --border: rgba(255, 0, 255, 0.5);
  --border-warm: rgba(0, 255, 204, 0.6);

  --code-bg: #13002b;
  --code-text: #00ffcc;
}


* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  overflow-y: scroll;
  overflow-x: hidden;
  font-size: 17px;
  /* Slightly larger base, but not huge */
  /* Firefox Scrollbars */
  scrollbar-width: thin;
  scrollbar-color: var(--border) var(--bg-card);
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  font-family: var(--font-reading);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;

  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Webkit Scrollbars */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-card);
  border-left: 1px solid var(--border);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 5px;
  border: 2px solid var(--bg-card);
  /* Creates inner padding effect */
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-alt);
}

[data-theme="light"] ::-webkit-scrollbar-thumb {
  background: var(--text-muted);
}

/* Ambient glow effect (Warm and cozy) */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  /* Opaque rgb gradient fading to black to entirely avoid alpha-channel banding */
  background: radial-gradient(circle at 50% 0%,
      rgb(179, 133, 98) 0%,
      rgb(0, 0, 0) 80%);
  opacity: 0.15;
  /* Apply transparency to the entire container instead */
  mix-blend-mode: screen;
  /* Black becomes perfectly transparent over the bg */
  pointer-events: none;
  z-index: 0;
}

/* Subtle grain */
.grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.04;
  /* True dither layer for banding reduction */
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
  z-index: 1000;
  /* Removed mix-blend-mode: overlay so it actually renders on pure darks */
}

/* Light theme overrides for ambient effects */
[data-theme="light"] body::before {
  background: radial-gradient(circle at 50% 0%, rgb(255, 255, 255) 0%, rgba(255, 255, 255, 0) 80%);
  opacity: 0.6;
  mix-blend-mode: normal;
}

[data-theme="light"] .grain {
  opacity: 0.08;
  /* Slightly more visible on light background */
}

/* Layout Grid (Mobile First Base) */
.sidebar {
  width: 100%;
  position: relative;
  padding: 2rem 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  background: var(--glass-panel);
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

/* Sidebar Scrollbar */
.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--border-warm);
}

.content {
  flex: 1;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1.5rem 5rem;
  position: relative;
  /* z-index removed so tooltips can float above sidebars */
}

.content-inner {
  width: 100%;
  max-width: var(--max-content-width);
}

article,
.article-content {
  max-width: 100%;
}

/* Sidebar Elements (UI Font) */
.sidebar header,
.sidebar nav,
.sidebar footer {
  font-family: var(--font-ui);
}

.logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-bright);
  text-decoration: none;
  letter-spacing: -0.04em;
  display: block;
  margin-bottom: 1rem;
  transition: var(--transition);
}

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

.tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.sidebar header,
.sidebar footer {
  text-align: center;
  align-items: center;
}

.theme-dropdown-container {
  display: flex;
  justify-content: center;
  width: 100%;
  position: relative;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

.theme-toggle-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem 0;
  font-family: inherit;
  font-size: inherit;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle-btn:hover {
  color: var(--text-bright);
}

.current-theme-label {
  color: var(--text-bright);
  font-weight: 500;
}

.theme-dropdown-menu {
  position: absolute;
  top: 100%;
  bottom: auto;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  z-index: 100;
}

/* Open State */
.theme-dropdown-container.open .theme-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.theme-option {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem 1rem;
  font-family: inherit;
  font-size: inherit;
  text-align: left;
  border-radius: 4px;
  transition: var(--transition);
}

.theme-option:hover {
  background: var(--bg-card);
  color: var(--text-bright);
}

.theme-option.active {
  color: var(--accent);
  background: var(--bg-warm);
}

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

.tagline {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.nav-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 1.5rem;
}

.nav-links a {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-bottom: 2px solid transparent;
  border-radius: 8px;
  padding: 0.85rem;
  justify-content: center;
  text-align: center;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
}

.nav-links a:hover {
  color: var(--text-bright);
  transform: translateY(-2px);
}

.nav-links a.active {
  color: var(--accent);
  font-weight: 700;
  border-bottom: 2px solid var(--accent);
}

.nav-links a.active:hover {
  color: var(--accent);
  transform: none;
}

.sidebar footer {
  margin-top: auto;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Typography & Content (Reading Font) */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-bright);
  font-weight: 400;
  /* Serif headings look better lighter */
  line-height: 1.2;
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 2.5rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
  letter-spacing: -0.04em;
}

h2 {
  font-size: 1.85rem;
}

h3 {
  font-size: 1.5rem;
  color: var(--text);
}

p {
  margin-bottom: 1.75rem;
  /* More breathing room between paragraphs */
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 107, 101, 0.3);
  transition: var(--transition);
}

a:hover {
  color: var(--accent-soft);
  border-bottom-color: var(--accent-soft);
}

/* Post List (Index) */
.post-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  /* Tighter gap to look like a cohesive list */
  margin-top: 1rem;
}

.post-item {
  position: relative;
}

.post-item a.post-link {
  display: block;
  text-decoration: none;
  border-bottom: none;
  color: inherit;
  padding: 1.5rem;
  /* Less padding, cozier cards */
  border-radius: 12px;
  /* Softer radius */
  background: rgba(128, 128, 128, 0.03);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(128, 128, 128, 0.08);
  transition: var(--transition);
  margin: 0;
  /* Pull out to align logic */
}

.post-item a.post-link:hover {
  background: var(--bg-card);
  border-color: var(--border-warm);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.3);
}

.post-title {
  font-size: 1.65rem;
  margin-top: 0;
  margin-bottom: 0.75rem;
  transition: var(--transition);
}

.post-item a.post-link:hover .post-title {
  color: var(--accent);
}

.post-meta {
  font-size: 0.9rem;
  font-family: var(--font-ui);
  /* Meta text in UI font */
  color: var(--text-muted);
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.25rem;
}

.post-tags {
  display: flex;
  gap: 0.5rem;
}

.tag {
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-alt);
  background: rgba(179, 133, 98, 0.08);
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  /* Pill shape for tags */
}

.post-excerpt {
  color: var(--text);
  font-size: 1.15rem;
  margin: 0;
  line-height: 1.6;
}

/* Article Styling */
.article-header {
  margin-bottom: 4rem;
  padding-bottom: 2rem;
}


.article-meta {
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 0.95rem;
  margin-top: 1rem;
}

.article-content {
  font-size: 1.15rem;
}

.article-content em,
.article-content i {
  color: var(--accent-pale);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 3rem 0;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
}

hr {
  border: 0;
  border-top: 1px solid var(--text);
  /* Match text color, not headers */
  margin: 4rem 0;
  /* Equal top and bottom margins */
}

.article-content ul,
.article-content ol {
  margin-bottom: 1.75rem;
  padding-left: 2rem;
}

.article-content li {
  margin-bottom: 0.75rem;
}

.article-content li::marker {
  color: var(--accent-alt);
}

.article-content blockquote {
  margin: 3rem 0;
  padding: 2rem 2.5rem;
  background: var(--bg-warm);
  border-left: none;
  /* Removing hard left border */
  border-radius: 12px;
  color: var(--text-bright);
  font-style: italic;
  line-height: 1.5;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.1);
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

/* Code & Pre */
code {
  font-family: var(--font-mono);
  font-size: 0.8em;
}

:not(pre)>code {
  background: var(--bg-card);
  color: var(--text-bright);
  padding: 0.2em 0.4em;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.code-wrapper {
  margin: 3rem 0;
  background: var(--code-bg);
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  max-width: 100%;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.8rem;
}

.code-lang {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.code-file {
  font-family: var(--font-mono);
  color: var(--text-bright);
  font-size: 0.85rem;
}

.code-actions {
  display: flex;
  gap: 0.5rem;
}

.code-actions button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.8rem;
  transition: var(--transition);
}

.code-actions button:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-bright);
}

pre {
  margin: 0;
  padding: 1.5rem 0;
  /* Vertical padding only, horizontal handled by lines */
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
  border: none;
  font-size: 0.85rem;
  line-height: 1.25;
  /* Decreased line height in code windows */
  display: table;
  width: 100%;
  /* Important for full width lines */
}

/* Numbered Lines */
.line {
  display: table-row;
}

.line:nth-child(even) {
  background: rgba(128, 128, 128, 0.04);
}

.line-number {
  display: table-cell;
  width: 1%;
  min-width: 2.5rem;
  /* Fixed width for numbers */
  text-align: right;
  padding: 0.15rem 1.5rem 0.15rem 1.5rem;
  color: var(--text-muted);
  opacity: 0.5;
  user-select: none;
  /* Don't select line numbers when copying */
}

.line-content {
  display: table-cell;
  padding: 0.15rem 1.5rem 0.15rem 0;
}

/* Wrap toggle state */
.code-wrapper.wrapped pre {
  white-space: pre-wrap;
  word-break: break-word;
}

.code-wrapper.wrapped .line-content {
  white-space: pre-wrap;
}


/* Highlight.js theme - Desaturated */
.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-section,
.hljs-link {
  color: #d46b65;
}

/* Rose */
.hljs-function .hljs-keyword {
  color: #b38562;
}

/* Amber */
.hljs-subst {
  color: #a0a6a8;
}

.hljs-string,
.hljs-title,
.hljs-name,
.hljs-type,
.hljs-attribute,
.hljs-symbol,
.hljs-bullet,
.hljs-addition,
.hljs-variable,
.hljs-template-tag,
.hljs-template-variable {
  color: #849c86;
}

/* Muted green */
.hljs-comment,
.hljs-quote,
.hljs-deletion,
.hljs-meta {
  color: #6b7275;
  font-style: italic;
}

/* Muted */
.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-title,
.hljs-section,
.hljs-doctag,
.hljs-type,
.hljs-name,
.hljs-strong {
  font-weight: normal;
}

.hljs-built_in,
.hljs-attr {
  color: #8e95c1;
}

/* Muted blue/purple */
.hljs-number {
  color: #b38562;
}

/* Amber */

/* Highlight.js theme - Light Theme Override */
[data-theme="light"] .hljs-keyword,
[data-theme="light"] .hljs-selector-tag,
[data-theme="light"] .hljs-literal,
[data-theme="light"] .hljs-section,
[data-theme="light"] .hljs-link {
  color: #b84a44;
  /* Deeper red */
}

[data-theme="light"] .hljs-function .hljs-keyword {
  color: #9f663c;
  /* Deeper amber/brown */
}

[data-theme="light"] .hljs-subst {
  color: #505558;
  /* Base dark text */
}

[data-theme="light"] .hljs-string,
[data-theme="light"] .hljs-title,
[data-theme="light"] .hljs-name,
[data-theme="light"] .hljs-type,
[data-theme="light"] .hljs-attribute,
[data-theme="light"] .hljs-symbol,
[data-theme="light"] .hljs-bullet,
[data-theme="light"] .hljs-addition,
[data-theme="light"] .hljs-variable,
[data-theme="light"] .hljs-template-tag,
[data-theme="light"] .hljs-template-variable {
  color: #4a7553;
  /* Deeper green */
}

[data-theme="light"] .hljs-comment,
[data-theme="light"] .hljs-quote,
[data-theme="light"] .hljs-deletion,
[data-theme="light"] .hljs-meta {
  color: #868e91;
  /* Muted contrast grey */
}

[data-theme="light"] .hljs-built_in,
[data-theme="light"] .hljs-attr {
  color: #4d5699;
  /* Deeper purple/blue */
}

[data-theme="light"] .hljs-number {
  color: #9f663c;
  /* Deeper amber/brown */
}

/* Highlight.js theme - Solarized Dark Override */
[data-theme="solarized-dark"] .hljs-keyword,
[data-theme="solarized-dark"] .hljs-selector-tag,
[data-theme="solarized-dark"] .hljs-literal,
[data-theme="solarized-dark"] .hljs-section,
[data-theme="solarized-dark"] .hljs-link {
  color: #cb4b16;
  /* Solarized orange */
}

[data-theme="solarized-dark"] .hljs-function .hljs-keyword {
  color: #d33682;
  /* Solarized magenta */
}

[data-theme="solarized-dark"] .hljs-subst {
  color: #839496;
  /* Base0 */
}

[data-theme="solarized-dark"] .hljs-string,
[data-theme="solarized-dark"] .hljs-title,
[data-theme="solarized-dark"] .hljs-name,
[data-theme="solarized-dark"] .hljs-type,
[data-theme="solarized-dark"] .hljs-attribute,
[data-theme="solarized-dark"] .hljs-symbol,
[data-theme="solarized-dark"] .hljs-bullet,
[data-theme="solarized-dark"] .hljs-addition,
[data-theme="solarized-dark"] .hljs-variable,
[data-theme="solarized-dark"] .hljs-template-tag,
[data-theme="solarized-dark"] .hljs-template-variable {
  color: #859900;
  /* Solarized green */
}

[data-theme="solarized-dark"] .hljs-comment,
[data-theme="solarized-dark"] .hljs-quote,
[data-theme="solarized-dark"] .hljs-deletion,
[data-theme="solarized-dark"] .hljs-meta {
  color: #586e75;
  /* Base01 comment grey */
}

[data-theme="solarized-dark"] .hljs-built_in,
[data-theme="solarized-dark"] .hljs-attr {
  color: #268bd2;
  /* Solarized blue */
}

[data-theme="solarized-dark"] .hljs-number {
  color: #2aa198;
  /* Solarized cyan */
}

/* Chat Log Bubbles */
.chat-log {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2.5rem 0;
  padding: 1.5rem;
  background: var(--bg-warm);
  border-radius: 16px;
  border: 1px solid var(--border);
}

.chat-msg {
  display: flex;
  flex-direction: column;
  max-width: 80%;
}

.chat-msg.chat-ai {
  align-self: flex-start;
  align-items: flex-start;
}

.chat-msg.chat-user {
  align-self: flex-end;
  align-items: flex-end;
}

.chat-bubble {
  padding: 0.75rem 1.15rem;
  border-radius: 18px;
  line-height: 1.55;
  font-size: 1.15rem;
  word-wrap: break-word;
}

.chat-bubble p:last-child {
  margin-bottom: 0;
}

.chat-ai .chat-bubble {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
  color: var(--text);
}

.chat-user .chat-bubble {
  background: var(--accent);
  border-bottom-right-radius: 4px;
  color: #fff;
}

/* Tame link + emphasis colors inside accent-colored user bubbles */
.chat-user .chat-bubble a {
  color: inherit;
  border-bottom-color: rgba(255, 255, 255, 0.5);
}

.chat-user .chat-bubble em,
.chat-user .chat-bubble i {
  color: inherit;
}

.chat-user .chat-bubble code {
  color: #1a1a1a;
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.1);
}

/* Neon Text Format */
.neon-text {
  color: #fff;
  /* Dark box with a static SVG noise dither overlaid using CSS blend-modes to simulate a plastic casing */
  background:
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.2' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.40'/%3E%3C/svg%3E"),
    #1b1a1c;
  padding: 0.6rem 1.6rem;
  border-radius: 10px;

  /* 3D Backplate Styling */
  border: 2px solid #1a1a1a;
  box-shadow:
    inset 0 0 15px rgba(0, 0, 0, 0.9),
    /* Internal depth */
    0 10px 20px -5px rgba(0, 0, 0, 0.6),
    /* Heavy drop shadow dropping down */
    0 0 0 1px rgba(255, 255, 255, 0.05),
    /* Subtle outer highlight ring */
    inset 0 1px 2px rgba(255, 255, 255, 0.1);
  /* Top inner bevel highlight */
  animation: neon-pulse-flicker 10s infinite;
  font-weight: 600;
  display: block;
  width: fit-content;
  margin: 2rem auto;
  text-align: center;
}

@keyframes neon-pulse-flicker {

  0%,
  2.7%,
  3.3%,
  3.8%,
  7.9%,
  8.5%,
  15%,
  74.2%,
  74.8%,
  75.2%,
  75.8%,
  100% {
    text-shadow:
      0 0 4px #fff,
      0 0 11px #fff,
      0 0 19px #fff,
      0 0 40px #001eff,
      0 0 80px #001eff,
      0 0 90px #001eff,
      0 0 100px #001eff,
      0 0 150px #001eff;
  }

  3.0%,
  3.6%,
  8.2%,
  74.5%,
  75.5% {
    text-shadow: none;
  }
}

.chat-sender {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  padding: 0 0.5rem;
  letter-spacing: 0.02em;
}

/* Tooltip Formatting */
.tooltip {
  position: relative;
  cursor: help;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 2px dotted var(--accent) !important;
  transition: var(--transition);
}

.tooltip:hover {
  border-bottom-style: solid !important;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: max-content;
  max-width: 250px;
  padding: 0.5rem 0.75rem;
  background: var(--bg-card);
  color: var(--text-bright);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 400;
  line-height: 1.4;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  pointer-events: none;
  z-index: 9999;
}

.tooltip:hover::after,
.tooltip:focus::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Light theme: slightly warmer user bubble */
[data-theme="light"] .chat-user .chat-bubble {
  color: #fff;
}

/* Series Navigation */
.series-nav {
  margin: 3rem 0;
  padding: 1.5rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.series-nav p {
  margin-bottom: 1rem;
}

.series-nav ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem 0;
}

.series-nav li {
  margin-bottom: 0.5rem;
}

.series-nav-ellipsis {
  color: var(--text-muted);
  margin: 0.25rem 0 0.25rem 1rem;
}

.series-nav-current {
  font-weight: bold;
  color: var(--text-bright);
}

.series-nav-current span {
  color: inherit;
  text-decoration: none;
}

.series-nav-all {
  font-size: 0.9rem;
  font-family: var(--font-ui);
}

/* Table of Contents - Mobile Overlay Default */
.toc-sidebar {
  position: fixed;
  top: 54px;
  /* Approximate height of the toggle bar */
  left: 0;
  width: 100%;
  height: calc(100vh - 54px);
  background: var(--bg);
  margin: 0;
  padding: 3rem;
  border-left: none;
  font-family: var(--font-ui);
  z-index: 49;

  /* Animation initial state: Slid up and invisible */
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  /* No transition here — prevents visible slide-up when resizing from wide to narrow */
  overflow-y: auto;
}

body.toc-open .toc-sidebar {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s, visibility 0.4s;
}

body.toc-open {
  overflow: hidden;
  /* Lock background scrolling */
}

.toc-header {
  font-size: 0.8rem;
  font-weight: bold;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.toc-header a {
  border-bottom: none;
  color: var(--text-muted);
}

.toc-header a:hover {
  color: var(--text-bright);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-item {
  margin-bottom: 0.5rem;
}

.toc-item a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: none;
  font-size: 0.9rem;
  transition: var(--transition);
  display: block;
}

.toc-item a:hover {
  color: var(--accent);
}

.toc-item a.active {
  color: var(--accent);
  border-left: 3px solid var(--accent);
  padding-left: 0.5rem;
  margin-left: calc(-0.5rem - 3px);
}

/* On mobile overlay, accent background needs to pop differently or just be standard */
@media (max-width: 1300px) {
  .toc-item a.active {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
  }
}

.toc-level-2 {
  font-weight: 500;
}

.toc-level-3 {
  padding-left: 1rem;
  font-size: 0.85rem;
}

.toc-level-4 {
  padding-left: 2rem;
  font-size: 0.8rem;
}

/* Mobile TOC Top Bar Default */
.toc-mobile-toggle {
  display: block;
  box-sizing: border-box;
  width: 100%;
  margin: 0;
  background: var(--bg-card);
  padding: 1rem;
  border: none;
  border-bottom: 1px solid var(--border);
  top: 0;
  position: sticky;
  z-index: 50;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: bold;
  line-height: 1.4;
  letter-spacing: 0.1em;
  text-align: center;
  text-decoration: none;
  color: var(--text-bright);
  cursor: pointer;
  transition: var(--transition);
}

.toc-mobile-toggle:hover {
  background: var(--bg-card);
  color: var(--accent);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
}

/* Responsive constraints */

/* Breakpoint B: Narrow Desktop (>= 1000px) */
@media (min-width: 1000px) {
  body {
    flex-direction: row;
    justify-content: flex-start;
    position: relative;
  }

  .sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    height: 100vh;
    position: sticky;
    top: 0;
    padding: 5rem 2rem;
    border-bottom: none;
    border-right: 1px solid var(--border);
    overflow: hidden;
  }

  .sidebar header,
  .sidebar footer {
    text-align: left;
    align-items: flex-start;
  }

  .tagline {
    margin-left: 0;
    margin-right: 0;
    margin-bottom: 4rem;
  }

  .nav-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 0;
  }

  .nav-links a {
    background: transparent;
    border: none;
    padding: 0;
    justify-content: flex-start;
    text-align: left;
    font-size: 1.05rem;
  }

  .nav-links a:hover {
    transform: translateX(6px);
  }

  .theme-dropdown-container {
    justify-content: flex-start;
  }

  .theme-dropdown-menu {
    top: auto;
    bottom: 100%;
    left: 0;
    transform: translateY(10px);
  }

  .theme-dropdown-container.open .theme-dropdown-menu {
    transform: translateY(0);
  }

  .content {
    flex: none;
    width: var(--max-content-width);
    display: flex;
    justify-content: flex-start;
    padding: 5rem 3rem 8rem;
  }

  .content-inner {
    width: 100%;
  }

  .post-item a.post-link {
    padding: 1.5rem;
  }

  .toc-sidebar {
    left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    top: 0;
    height: 100vh;
  }

  .toc-mobile-toggle {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    z-index: 51;
  }
}

/* Breakpoint C: Full Desktop (>= 1350px) */
@media (min-width: 1350px) {
  .toc-mobile-toggle {
    display: none;
  }

  .toc-sidebar {
    position: sticky;
    top: 6rem;
    left: auto;
    width: var(--toc-width);
    flex-shrink: 0;
    align-self: flex-start;
    height: calc(100vh - 6rem);
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    padding: 0;
    margin-left: 2rem;
    border-left: 1px solid var(--border);
    padding-left: 1.5rem;
    overflow-y: auto;
    scrollbar-width: none;
    /* Firefox */
  }

  .toc-sidebar::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
  }

  body.toc-open {
    overflow: auto;
  }

  .content {
    width: var(--max-content-width);
  }

  .toc-item a.active {
    color: var(--accent);
    font-weight: 700;
  }
}