@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700;800&display=swap');

/* ============================================================
   THEME VARIABLES — NORD DARK GLASS
   ============================================================ */

:root {
  --nord0: #242933;
  --nord1: #2e3440;
  --nord2: #3b4252;
  --nord3: #434c5e;
  
  --nord4: #d8dee9;
  --nord5: #e5e9f0;
  --nord6: #eceff4;

  --nord7: #8fbcbb;
  --nord8: #88c0d0;
  --nord9: #81a1c1;
  --nord10: #5e81ac;

  --nord11: #bf616a;
  --nord12: #d08770;
  --nord13: #ebcb8b;
  --nord14: #a3be8c;
  --nord15: #b48ead;

  --bg: var(--nord0);
  --bg-alt: var(--nord1);
  --text: var(--nord6);
  --subtext: var(--nord4);

  --accent: var(--nord9);
  --accent2: var(--nord8);
  --accent-glow: rgba(129, 161, 193, 0.15);

  --glass-bg: rgba(46, 52, 64, 0.75);
  --glass-border: rgba(216, 222, 233, 0.12);
  --shadow: rgba(0, 0, 0, 0.35);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg);
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

:focus-visible {
  outline: 2px dashed var(--accent);
  outline-offset: 2px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--nord3);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* ============================================================
   RESPONSIVE LAYOUT (PORTED FROM ORIGINAL CSS)
   ============================================================ */

.layout {
  display: flex;
  min-height: 100vh;
  flex-direction: column; /* Stacked by default for mobile */
}

@media (min-width: 768px) {
  .layout {
    flex-direction: row; /* Side-by-side on desktop */
  }
}

/* Sidebar */
.sidebar {
  width: 100%;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  padding: 20px 16px;
  z-index: 100;
}

@media (min-width: 768px) {
  .sidebar {
    width: 270px;
    flex-shrink: 0;
    border-right: 1px solid var(--glass-border);
    border-bottom: none;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 28px 16px;
  }
}

/* Sidebar Nav Links (Instant state change, transition: none) */
.nav-link {
  display: block;
  padding: 8px 12px;
  font-size: 13.5px;
  color: var(--subtext);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  transition: none !important;
  border: 1px solid transparent;
  overflow-wrap: anywhere;
}

.nav-link:hover {
  color: var(--nord8);
  background: var(--accent-glow);
  border-color: rgba(136, 192, 208, 0.2);
}

.nav-link.active {
  color: var(--nord8);
  background: var(--accent-glow);
  border-color: var(--accent);
  font-weight: 700;
}

.nav-link.active::before {
  content: "› ";
  margin-right: 4px;
  color: var(--accent);
}

/* Main Content Column */
.content {
  flex: 1;
  padding: 32px 20px;
  max-width: 100%;
  min-width: 0; /* Prevents pre/table overflow breaking flex layout */
}

@media (min-width: 768px) {
  .content {
    padding: 48px 64px;
    max-width: 820px;
    margin: 0 auto;
  }
}

.content > *:last-child {
  margin-bottom: 0;
}

/* ============================================================
   TYPOGRAPHY & CONTENT
   ============================================================ */

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--nord9);
  margin-bottom: 24px;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--nord6);
  font-weight: 700;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

h1 {
  font-size: 2.2rem;
  margin: 0 0 24px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 12px;
}

h2 {
  font-size: 1.4rem;
  margin: 40px 0 16px;
}
h2::before {
  content: "# ";
  color: var(--accent);
}

h3 {
  font-size: 1.15rem;
  margin: 28px 0 12px;
}

h4, h5, h6 {
  font-size: 1rem;
  margin: 24px 0 10px;
}

p {
  color: var(--subtext);
  font-size: 15px;
  margin: 0 0 20px;
  overflow-wrap: break-word;
}

a {
  color: var(--nord8);
  text-decoration: underline;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}

a:hover {
  color: var(--nord7);
}

blockquote {
  margin: 0 0 24px;
  padding: 14px 20px;
  border-left: 4px solid var(--accent);
  background: var(--bg-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--subtext);
  font-style: italic;
}

/* ============================================================
   CODE BLOCKS & KABRA SYNTAX HIGHLIGHTING
   ============================================================ */

.code-block {
  background: var(--nord1) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-md);
  margin: 0 0 28px;
  box-shadow: 0 8px 24px var(--shadow);
  overflow: hidden;
}

.code-block-lang {
  display: flex;
  justify-content: flex-end;
  padding: 6px 14px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--glass-border);
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--nord8);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.code-block pre {
  margin: 0;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.5;
  overflow-x: auto;
}

.code-block pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--nord6);
  overflow-wrap: normal;
  white-space: pre;
}

/* Syntax Highlighting Tokens */
.tok-keyword   { color: var(--nord9); font-weight: 600; }
.tok-string    { color: var(--nord14); }
.tok-number    { color: var(--nord15); }
.tok-comment   { color: #6b7c93; font-style: italic; }
.tok-function  { color: var(--nord8); }
.tok-param     { color: var(--nord7); }

.tok-md-heading { color: var(--nord6); font-weight: bold; }
.tok-md-quote   { color: #6b7c93; font-style: italic; }
.tok-md-bold    { color: var(--nord9); font-weight: bold; }
.tok-md-link    { color: var(--nord15); text-decoration: underline; }
.tok-md-code    { color: var(--nord14); }

:not(pre) > code {
  background: var(--bg-alt);
  color: var(--nord8);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  font-family: var(--font-mono);
  font-size: 0.88em;
  overflow-wrap: break-word;
}

/* ============================================================
   RESPONSIVE IMAGES (FROM ORIGINAL CSS)
   ============================================================ */

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

p img {
  display: inline-block;
  max-width: none;
  max-height: 1.4em;
  vertical-align: text-bottom;
}

p:has(> img:only-child) {
  margin-bottom: 28px;
}

p > img:only-child {
  display: block;
  max-width: 100%;
  height: auto;
  max-height: none;
  margin: 0 auto;
  box-shadow: 0 8px 24px var(--shadow);
}

.content div[align="center"] {
  text-align: center;
  margin-bottom: 24px;
}

.content div[align="center"] img {
  display: inline-block;
  margin: 12px auto;
  box-shadow: none;
}

/* ============================================================
   RESPONSIVE TABLES (FROM ORIGINAL CSS)
   ============================================================ */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 28px;
  font-size: 0.95rem;
  background: var(--glass-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
}

th, td {
  border: 1px solid var(--glass-border);
  padding: 10px 14px;
  text-align: left;
  overflow-wrap: break-word;
}

thead th {
  background: var(--nord1);
  color: var(--nord6);
  font-family: var(--font-mono);
  font-size: 13px;
  border-bottom: 2px solid var(--nord9);
}

tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

tbody tr:hover {
  background: var(--accent-glow);
}

/* ============================================================
   ALERTS & NAVIGATION
   ============================================================ */

.alert {
  padding: 16px 20px;
  margin: 0 0 24px;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.alert-note { border-left: 4px solid var(--nord9); }
.alert-tip { border-left: 4px solid var(--nord14); }
.alert-warning { border-left: 4px solid var(--nord13); }
.alert-caution, .alert-important { border-left: 4px solid var(--nord11); }

.pagenav {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--glass-border);
  padding-top: 24px;
  margin-top: 40px;
  gap: 16px;
}

.pagenav a {
  border: 1px solid var(--glass-border);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  color: var(--nord8);
  font-family: var(--font-mono);
  text-decoration: none;
  transition: none !important;
}

.pagenav a:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
}