/* ===== Base / Reset ===== */
* { box-sizing: border-box; }
:root {
  --sidebar-bg: #2c3e50;
  --sidebar-accent: #3498db;
  --sidebar-hover: #34495e;
  --link-bg: #3498db;
  --link-bg-hover: #2980b9;
  --text: #111;
  --page-bg: #f3f3f3;
  --border: #ccc;
}

html, body { height: 100%; }
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: var(--page-bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
  width: 220px;
  background-color: var(--sidebar-bg);
  color: white;
  padding: 1rem;
  position: fixed;
  inset: 0 auto 0 0; /* top:0 right:auto bottom:0 left:0 */
  overflow-y: auto;
}

.sidebar h2 {
  font-size: 1.5rem;
  margin: 0 0 2rem 0;
  text-align: center;
}

.sidebar-heading {
  font-size: 1rem;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--sidebar-accent);
  color: #fff;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.sidebar nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 0.125rem 0.25rem; /* gives a nicer hover feel */
  border-radius: 6px;
  transition: background 0.25s, padding-left 0.2s ease;
}

.sidebar nav a:hover,
.sidebar nav a:focus-visible {
  background-color: var(--sidebar-hover);
  padding-left: 5px;
  outline: none;
}

/* ===== Content ===== */
.content {
  margin-left: 240px;
  padding: 2rem 2rem 3rem; /* ⬇ added bottom buffer (3rem) */
  width: 100%;
}

h2 {
  border-bottom: 2px solid #ccc;
  padding-bottom: 0.5rem;
  margin: 3rem 0 1rem;
}

/* ===== Link Grid ===== */
.link-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr); /* 4 items per row */
  gap: 1rem;
  margin-top: 1rem;
}

.link-grid a {
  display: block;
  background-color: var(--link-bg);
  color: white;
  text-align: center;
  padding: 1rem;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: background 0.25s, transform 0.08s ease;
  outline: none;
}

.link-grid a:hover,
.link-grid a:focus-visible {
  background-color: var(--link-bg-hover);
}

.link-grid a:active {
  transform: translateY(1px);
}

/* ===== Site Search (compact magnifier that expands) ===== */
.site-search { position: relative; margin: 1rem 0; }

/* Base: small circular button look */
.site-search input[type="search"] {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid #7a8aa0;
  background: #fff;

  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  color: #111;
  transition: width 200ms ease, padding 200ms ease, border-radius 200ms ease, box-shadow 150ms ease;
}

/* Expanded on focus or when it has text */
.site-search input[type="search"]:focus,
.site-search input[type="search"]:not(:placeholder-shown) {
  width: 100%;
  height: auto;
  padding: 0.5rem 0.75rem 0.5rem 2rem; /* room for icon on left */
  border-radius: 8px;
  background-position: 8px center;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
  outline: none;
}

/* If search is in the dark sidebar, keep contrast good */
.sidebar .site-search input[type="search"] {
  background-color: #fff;
  border: 1px solid #7a8aa0;
}

/* Search results popover */
.site-search-results {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  max-height: 320px;
  overflow: auto;
  z-index: 1000;
  box-shadow: 0 12px 28px rgba(0,0,0,0.12);
}

.site-search-results a {
  display: block;
  padding: 0.55rem 0.75rem;
  color: #333;
  text-decoration: none;
  border-bottom: 1px solid #eee;
}

.site-search-results a:hover,
.site-search-results a:focus-visible {
  background: #f6f8fa;
  outline: none;
}

.site-search-results .result-section {
  display: block;
  font-size: 0.85em;
  color: #666;
}

/* ===== Section highlight effect ===== */
.section-highlight { animation: highlightFade 3s ease-out; }
@keyframes highlightFade {
  0%   { background-color: #FFFF00; }
  100% { background-color: transparent; }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .link-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sidebar { display: none; }
  .content {
    margin-left: 0;
    padding: 1rem 1rem 3rem; /* ⬇ keep the bottom buffer on small screens */
  }
}

@media (max-width: 480px) {
  .link-grid { grid-template-columns: 1fr; }
}

/* Larger screens get a bit more room at the bottom */
@media (min-width: 1024px) {
  .content { padding-bottom: 5rem; } /* ⬆ bump buffer on desktop */
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  .site-search input[type="search"] { transition: none; }
  .link-grid a { transition: none; }
  .sidebar nav a { transition: none; }
}

/* Hide placeholder when collapsed */
.site-search input[type="search"]::placeholder {
  color: transparent;
  transition: color 0.2s ease;
}

/* Show placeholder when focused or expanded */
.site-search input[type="search"]:focus::placeholder,
.site-search input[type="search"]:not(:placeholder-shown)::placeholder {
  color: #888; /* or whatever color you prefer */
}