:root {
  /* Dracula Official Palette */
  --dracula-bg: #282a36;
  --dracula-current: #44475a;
  --dracula-selection: #44475a;
  --dracula-fg: #f8f8f2;
  --dracula-comment: #6272a4;
  --dracula-cyan: #8be9fd;
  --dracula-green: #50fa7b;
  --dracula-orange: #ffb86c;
  --dracula-pink: #ff79c6;
  --dracula-purple: #bd93f9;
  --dracula-red: #ff5555;
  --dracula-yellow: #f1fa8c;

  /* App Variables mapped to Dracula */
  --primary: var(--dracula-purple);
  --primary-hover: var(--dracula-pink);
  --primary-light: rgba(189, 147, 249, 0.18);
  --text-main: var(--dracula-fg);
  --text-muted: var(--dracula-comment);
  --bg-body: var(--dracula-bg);
  --bg-sidebar: #21222c;
  --bg-header: #1e1f29;
  --bg-card: #21222c;
  --border: #383a59;
  --border-light: #2c2f3f;
  --code-bg: #1e1f29;
  --code-text: var(--dracula-fg);
  --inline-code-bg: #44475a;
  --inline-code-text: var(--dracula-green);
  --success: var(--dracula-green);
  --warning: var(--dracula-orange);
  --danger: var(--dracula-red);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sidebar-width: 280px;
  --header-height: 60px;
}

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

html {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-body);
  line-height: 1.65;
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-body);
  color: var(--text-main);
}

/* Header */
.site-header {
  height: var(--header-height);
  background: var(--bg-header);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--dracula-fg);
  text-decoration: none;
}

.logo-badge {
  background: var(--primary-light);
  color: var(--dracula-purple);
  border: 1px solid rgba(189, 147, 249, 0.3);
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 600;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.header-link {
  color: var(--dracula-fg);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.15s;
}

.header-link:hover {
  color: var(--dracula-pink);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--dracula-fg);
}

/* Layout */
.layout-container {
  display: flex;
  flex: 1;
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}

/* Sidebar */
.site-sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 1.5rem 1rem 3rem 1.25rem;
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-search {
  margin-bottom: 1.25rem;
}

.sidebar-search input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.85rem;
  background: var(--dracula-bg);
  color: var(--dracula-fg);
  outline: none;
  transition: all 0.15s;
}

.sidebar-search input:focus {
  border-color: var(--dracula-purple);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.sidebar-group {
  margin-bottom: 1.5rem;
}

.sidebar-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--dracula-comment);
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

.sidebar-links {
  list-style: none;
}

.sidebar-links li {
  margin-bottom: 0.2rem;
}

.sidebar-links a {
  display: block;
  padding: 0.45rem 0.65rem;
  color: #d6d8e0;
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 6px;
  transition: all 0.15s;
}

.sidebar-links a:hover {
  background: var(--dracula-current);
  color: var(--dracula-green);
}

.sidebar-links a.active {
  background: var(--primary-light);
  color: var(--dracula-purple);
  font-weight: 600;
  border-left: 3px solid var(--dracula-purple);
}

/* Main Content */
.main-content {
  flex: 1;
  min-width: 0;
  padding: 2.5rem 3.5rem 4rem 3.5rem;
  max-width: 920px;
}

/* Typography */
.content h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.25;
  color: var(--dracula-fg);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 2.25rem;
  margin-bottom: 0.85rem;
  color: var(--dracula-purple);
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 0.35rem;
}

.content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 1.75rem;
  margin-bottom: 0.6rem;
  color: var(--dracula-cyan);
}

.content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--dracula-orange);
}

.content p {
  margin-bottom: 1.15rem;
  color: #e2e4ea;
}

.content a {
  color: var(--dracula-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.15s;
}

.content a:hover {
  color: var(--dracula-green);
  border-bottom-color: var(--dracula-green);
}

.content ul, .content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
  color: #e2e4ea;
}

.content li {
  margin-bottom: 0.4rem;
}

.content strong {
  color: var(--dracula-fg);
}

/* Inline code & code blocks */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  background-color: var(--inline-code-bg);
  color: var(--inline-code-text);
}

.code-container {
  position: relative;
  margin: 1.5rem 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
  background-color: var(--code-bg);
  border: 1px solid var(--border);
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  background-color: #21222c;
  border-bottom: 1px solid var(--border);
}

.code-lang {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--dracula-purple);
}

pre {
  background-color: var(--code-bg) !important;
  color: var(--dracula-fg);
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.885rem;
  line-height: 1.55;
  margin: 0;
}

pre code {
  background: transparent !important;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

.copy-button {
  background: rgba(189, 147, 249, 0.15);
  border: 1px solid rgba(189, 147, 249, 0.3);
  color: var(--dracula-fg);
  font-size: 0.75rem;
  font-family: var(--font-sans);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.copy-button:hover {
  background: var(--dracula-purple);
  color: #282a36;
  font-weight: 600;
}

/* ==========================================================================
   Syntax Highlighting (Rouge / Pygments Dracula Official Theme)
   ========================================================================== */

.highlight {
  background-color: #1e1f29;
  color: #f8f8f2;
}

.highlight .w   { color: #f8f8f2; }
.highlight .err { color: #ff5555; background-color: rgba(255, 85, 85, 0.15); }

/* Comments */
.highlight .c,
.highlight .c1,
.highlight .cm,
.highlight .cs,
.highlight .cp,
.highlight .cpf { color: #6272a4 !important; font-style: italic; }

/* Keywords: def, class, import, from, with, as, yield, return, try, finally */
.highlight .k,
.highlight .kd,
.highlight .kn,
.highlight .kp,
.highlight .kr,
.highlight .kt,
.highlight .kv { color: #ff79c6 !important; font-weight: 600; }
.highlight .kc { color: #bd93f9 !important; font-weight: 600; } /* True, False, None */

/* Operators: in, is, and, or, not, =, +, - */
.highlight .o,
.highlight .ow { color: #ff79c6 !important; }

/* Strings */
.highlight .s,
.highlight .sa,
.highlight .sb,
.highlight .sc,
.highlight .dl,
.highlight .sd,
.highlight .s2,
.highlight .se,
.highlight .sh,
.highlight .si,
.highlight .sx,
.highlight .sr,
.highlight .s1,
.highlight .ss { color: #f1fa8c !important; }
.highlight .se { color: #ffb86c !important; font-weight: 600; }

/* Numbers */
.highlight .m,
.highlight .mb,
.highlight .mf,
.highlight .mh,
.highlight .mi,
.highlight .il,
.highlight .mo { color: #bd93f9 !important; }

/* Function & Method Names: run(), connect(), stop() */
.highlight .nf,
.highlight .fm { color: #50fa7b !important; font-weight: 600; }

/* Classes & Types: Hub, Motor, DistanceSensor */
.highlight .nc { color: #8be9fd !important; font-weight: 600; }

/* Namespaces / Modules: wedopy, time, task */
.highlight .nn { color: #f8f8f2 !important; }

/* Builtins: print, range, len, int, self */
.highlight .nb,
.highlight .bp { color: #8be9fd !important; }

/* Decorators: @property, @staticmethod */
.highlight .nd { color: #50fa7b !important; font-weight: 600; }

/* Exceptions: ValueError, TypeError, WedoError */
.highlight .ne { color: #ff5555 !important; font-weight: 600; }

/* Attributes & Variables */
.highlight .na { color: #50fa7b !important; }
.highlight .nt { color: #ff79c6 !important; }
.highlight .nv,
.highlight .vc,
.highlight .vg,
.highlight .vi,
.highlight .vm { color: #f8f8f2 !important; }

/* Punctuation: (), [], {}, :, , */
.highlight .p { color: #f8f8f2 !important; }

/* Diff view */
.highlight .gd { color: #ff5555 !important; background-color: rgba(255, 85, 85, 0.15); }
.highlight .gi { color: #50fa7b !important; background-color: rgba(80, 250, 123, 0.15); }

/* Callouts / Alerts (Dracula Style) */
.callout {
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--dracula-purple);
  background-color: rgba(189, 147, 249, 0.1);
  border-radius: 0 6px 6px 0;
  margin: 1.5rem 0;
}

.callout-title {
  font-weight: 700;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.callout-note {
  border-left-color: var(--dracula-purple);
  background-color: rgba(189, 147, 249, 0.12);
  color: var(--dracula-fg);
}

.callout-tip {
  border-left-color: var(--dracula-green);
  background-color: rgba(80, 250, 123, 0.12);
  color: var(--dracula-fg);
}

.callout-warning {
  border-left-color: var(--dracula-orange);
  background-color: rgba(255, 184, 108, 0.12);
  color: var(--dracula-fg);
}

.callout-danger {
  border-left-color: var(--dracula-red);
  background-color: rgba(255, 85, 85, 0.12);
  color: var(--dracula-fg);
}

.callout p {
  margin-bottom: 0;
  color: inherit;
}

blockquote {
  border-left: 4px solid var(--dracula-comment);
  padding-left: 1rem;
  margin: 1.25rem 0;
  color: var(--dracula-comment);
  font-style: italic;
  background: rgba(68, 71, 90, 0.15);
  padding: 0.5rem 1rem;
  border-radius: 0 4px 4px 0;
}

/* Tables (Dracula Style) */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  border: 1px solid var(--border);
}

th, td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  text-align: left;
}

th {
  background: #21222c;
  font-weight: 600;
  color: var(--dracula-purple);
}

tr:nth-child(even) {
  background-color: rgba(68, 71, 90, 0.25);
}

/* Page Navigation (Next / Prev) */
.page-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.nav-link-btn {
  display: flex;
  flex-direction: column;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--border);
  background: #21222c;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.15s;
  max-width: 45%;
}

.nav-link-btn:hover {
  border-color: var(--dracula-purple);
  background-color: var(--dracula-current);
}

.nav-link-btn .nav-direction {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--dracula-comment);
  font-weight: 600;
}

.nav-link-btn .nav-label {
  font-weight: 600;
  color: var(--dracula-purple);
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--dracula-comment);
  background: #1e1f29;
}

/* Responsive */
@media (max-width: 900px) {
  .menu-toggle {
    display: block;
  }

  .site-sidebar {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    z-index: 100;
    transition: left 0.25s ease;
    box-shadow: 4px 0 16px rgba(0,0,0,0.5);
  }

  .site-sidebar.open {
    left: 0;
  }

  .main-content {
    padding: 1.5rem 1rem 3rem 1rem;
  }
}