/* Page layout */

#menu {
  width: 280px;
  min-width: 280px;
  background-color: var(--menu-bg);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  padding: 1em;
  box-sizing: border-box;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
}

#menu h1 {
  margin-top: 0;
  margin-bottom: 1.5em;
}

/* Logo styling */
#menu img {
  display: block;
  margin: 0 auto 1em auto;
  max-width: 100%;
  height: auto;
}

/* Responsive logo sizing */
@media (max-width: 768px) {
  #menu img {
    height: 80px;
  }
}

/* Theme toggle button */
#menu > div:first-child {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#theme-toggle {
  padding: 0.5em 1em;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9em;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  flex-shrink: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 2px solid var(--border-color);
}

#theme-toggle:hover {
  background-color: var(--border-color);
  border-color: var(--accent-color);
}

/* Specific styling for light mode */
:root #theme-toggle {
  background-color: #e9ecef;
  border-color: #495057;
  color: #212529;
}

:root #theme-toggle:hover {
  background-color: #dee2e6;
  border-color: var(--accent-color);
}

/* Specific styling for dark mode */
[data-theme="dark"] #theme-toggle {
  background-color: #3a3a3a;
  border-color: #808080;
  color: #f0f0f0;
}

[data-theme="dark"] #theme-toggle:hover {
  background-color: #4a4a4a;
  border-color: var(--accent-color);
}

/* Font size control buttons */
#font-increase,
#font-decrease {
  padding: 0.5em 0.8em;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9em;
  font-weight: bold;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 2px solid var(--border-color);
}

#font-increase:hover,
#font-decrease:hover {
  background-color: var(--border-color);
  border-color: var(--accent-color);
}

/* Specific styling for light mode */
:root #font-increase,
:root #font-decrease {
  background-color: #e9ecef;
  border-color: #495057;
  color: #212529;
}

:root #font-increase:hover,
:root #font-decrease:hover {
  background-color: #dee2e6;
  border-color: var(--accent-color);
}

/* Specific styling for dark mode */
[data-theme="dark"] #font-increase,
[data-theme="dark"] #font-decrease {
  background-color: #3a3a3a;
  border-color: #808080;
  color: #f0f0f0;
}

[data-theme="dark"] #font-increase:hover,
[data-theme="dark"] #font-decrease:hover {
  background-color: #4a4a4a;
  border-color: var(--accent-color);
}

/* Disabled state for font buttons */
#font-increase:disabled,
#font-decrease:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Search styling */
.search-container {
  margin-bottom: 1.5em;
  display: flex;
  gap: 0.5em;
  align-items: center;
}

#search-box {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 0.9em;
  box-sizing: border-box;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

#search-box:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(45, 88, 183, 0.2);
}

/* Menu styling */

#menu .submenu {
  margin-bottom: 1.5em;
}

#menu label {
  display: block;
  font-weight: bold;
  font-size: 0.95em;
  color: var(--text-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5em;
  padding-bottom: 0.25em;
  border-bottom: 2px solid var(--accent-color);
  transition: color 0.3s ease, border-color 0.3s ease;
}

#menu label a {
  color: inherit;
  text-decoration: none;
}

/* Menu link styling */

#menu a {
  display: block;
  padding: 0.4em 0.8em;
  color: var(--menu-link-color);
  text-decoration: none;
  border-radius: 4px;
  margin-bottom: 0.2em;
  transition: background-color 0.2s ease, color 0.2s ease;
}

#menu a:hover {
  background-color: var(--border-color);
  color: var(--accent-color);
}

#menu a:visited {
  color: var(--menu-link-color);
}