:root {
  --bg-color: #f4e4bc; /* Parchment-like background */
  --sidebar-bg: #2c1e14; /* Dark wood/leather */
  --text-color: #2b1d0e;
  --sidebar-text: #d4c5a9;
  --accent-color: #8b3a1a; /* Burnt orange/terracotta */
  --link-color: #a0400b;
  --link-hover: #cd5c0a;
  --border-color: #8b7355;
  --font-heading: "Cinzel", serif;
  --font-body: "Lato", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

.container {
  display: flex;
  min-height: 100vh;
}

/* Site Banner */
.site-banner {
  background-color: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  border-bottom: 5px solid var(--accent-color);
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1002; /* Above sidebar */
  height: 70px;
}

.banner-content {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.banner-logo {
  height: 50px;
  width: 50px;
  margin-right: 15px;
  filter: drop-shadow(0 0 3px rgba(220, 70, 20, 0.5));
}

.site-banner h1 {
  font-family: var(--font-heading);
  color: var(--accent-color);
  margin: 0;
  font-size: 1.8em;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

/* Container adjustment for fixed banner */
.container {
  display: flex;
  min-height: 100vh;
  padding-top: 70px; /* Space for banner */
}

/* Sidebar adjustments */
.sidebar {
  width: 280px;
  background-color: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 20px;
  padding-bottom: 60px;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 70px; /* Below banner */
  height: calc(100vh - 70px);
  overflow-y: auto;
  border-right: 5px solid var(--accent-color);
  box-shadow: 4px 0 10px rgba(0, 0, 0, 0.3);
}

.nav-section {
  margin-bottom: 25px;
}

.nav-section h3 {
  font-family: var(--font-heading);
  color: #e6ccb2; /* Lighter sand color */
  border-bottom: 1px solid #5d4037;
  padding-bottom: 5px;
  margin-bottom: 10px;
  font-size: 1.1em;
  letter-spacing: 1px;
}

.nav-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-section li {
  margin-bottom: 5px;
}

.nav-section a {
  color: var(--sidebar-text);
  text-decoration: none;
  display: block;
  padding: 5px 10px;
  border-radius: 4px;
  transition:
    background 0.3s,
    color 0.3s;
  font-size: 0.95em;
}

.nav-section a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--accent-color);
}

.nav-section a.active {
  background-color: var(--accent-color);
  color: #fff;
  font-weight: bold;
}

/* Main Content */
.content {
  flex: 1;
  margin-left: 280px; /* Width of sidebar */
  padding: 40px 60px;
  max-width: 900px;
}

.markdown-body {
  background-color: rgba(255, 255, 255, 0.4);
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(139, 115, 85, 0.3);
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  font-family: var(--font-heading);
  color: #4a3b2a;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

.markdown-body h1 {
  font-size: 2.5em;
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 10px;
  color: var(--accent-color);
}

.markdown-body h2 {
  font-size: 1.8em;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 5px;
}

.markdown-body a {
  color: var(--link-color);
  text-decoration: none;
  border-bottom: 1px dotted var(--link-color);
}

.markdown-body a:hover {
  color: var(--link-hover);
  border-bottom: 1px solid var(--link-hover);
}

.markdown-body code {
  background-color: rgba(0, 0, 0, 0.05);
  padding: 2px 4px;
  border-radius: 3px;
  font-family: monospace;
}

.markdown-body pre {
  background-color: #2c1e14;
  color: #f0f0f0;
  padding: 15px;
  border-radius: 5px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
}

.markdown-body pre code {
  background-color: transparent;
  padding: 0;
  color: inherit;
}

.markdown-body blockquote {
  border-left: 4px solid var(--accent-color);
  margin: 0;
  padding-left: 20px;
  color: #555;
  font-style: italic;
  background-color: rgba(139, 58, 26, 0.1);
  padding: 10px 20px;
  border-radius: 0 5px 5px 0;
}

.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 20px 0;
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--border-color);
  padding: 10px;
  text-align: left;
}

.markdown-body th {
  background-color: rgba(139, 58, 26, 0.2);
  font-family: var(--font-heading);
}

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

::-webkit-scrollbar-track {
  background: #2c1e14;
}

::-webkit-scrollbar-thumb {
  background: #5d4037;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #8b3a1a;
}
/* Menu Toggle */
.menu-toggle {
  display: none; /* Hidden on desktop */
  background: transparent;
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
  border-radius: 4px;
  padding: 5px 10px;
  font-size: 1.5em;
  cursor: pointer;
  margin-right: 15px; /* Space between toggle and logo if needed */
  position: absolute; /* Left align in banner */
  left: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  /* Adjust banner content logic for mobile if needed */
  .banner-content {
      /* Logo and text are centered by default flex behavior above */
  }
  
  .site-banner h1 {
      font-size: 1.5em; /* Smaller on mobile */
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    z-index: 1000;
    width: 250px;
    box-shadow: 2px 0 10px rgba(0,0,0,0.5);
    height: calc(100vh - 70px); /* Adjust height */
    top: 70px;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .content {
    margin-left: 0;
    padding: 0;
    padding-top: 20px; /* Space inside container, banner uses fixed pos padding-top on container */
  }

  .markdown-body {
    padding: 15px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .markdown-body h1 {
    font-size: 1.8em;
  }
}