/* Minimal custom styles for Geography OpenCourseWare */

:root {
  --primary-blue: #1565C0;
  --primary-green: #2E7D32;
  --dark-gray: #333333;
}

body {
  color: #333 !important;
}

/* DARK HEADER/NAVBAR */
.navbar {
  background-color: var(--dark-gray) !important;
  border-bottom: 2px solid var(--primary-green) !important;
}

.navbar-title, .navbar .nav-link {
  color: white !important;
}

.navbar .nav-link:hover {
  color: var(--primary-green) !important;
}

/* TABSET STYLING */
.nav-tabs .nav-link {
  color: var(--primary-blue) !important;
}

.nav-tabs .nav-link.active {
  color: var(--primary-green) !important;
  border-bottom: 2px solid var(--primary-green) !important;
}

/* BRAND COLORS */
h1.title {
  color: var(--primary-blue);
  font-weight: 800;
}

h2, h3 {
  color: var(--primary-blue);
  border-bottom: none !important;
}

a {
  color: var(--primary-blue);
  text-decoration: none !important;
}

a:hover {
  color: var(--primary-green);
  text-decoration: none !important;
}

ul {
  padding-left: 1.5rem;
}

ul li {
  margin-bottom: 0.5rem;
}

/* REMOVE CALLOUT BORDERS */
.callout {
  border-left: none !important;
  border-radius: 8px !important;
  border: 1px solid #eee !important;
}

.callout-header {
  border-bottom: 1px solid #eee !important;
}

/* TOC & SIDEBAR STYLING */
.toc-title, .sidebar-title {
  color: var(--primary-blue) !important;
  font-weight: 700 !important;
}

nav[role="doc-toc"] ul li > a,
.sidebar-link {
  color: #555 !important; /* Improved contrast for inactive */
  border-left: none !important;
}

nav[role="doc-toc"] ul li > a.active,
.sidebar-navigation .active > .sidebar-link,
.toc-actions a:hover {
  color: var(--primary-green) !important;
  border-left: none !important;
  font-weight: 600 !important;
}

.quarto-secondary-nav {
  border-bottom: 1px solid #eee !important;
}

/* GLOBAL ICON REMOVAL (Refined) */
.bi:not(.nav-footer .bi):not(.navbar .bi):not(.code-copy-button .bi):not(.quarto-code-copy-button .bi), 
.callout-icon-container,
.nav-link:after,
.sidebar-link:after,
.dropdown-toggle:after {
  display: none !important;
}

.callout {
  padding: 1rem !important;
}

/* FOOTER STYLING */
.nav-footer {
  border-top: 1px solid #eee;
  padding-top: 2rem !important;
  margin-top: 4rem !important;
  background-color: transparent !important;
}

.nav-footer-left,
.nav-footer-center,
.nav-footer-right {
  color: #777 !important;
  font-size: 0.9rem !important;
}

.nav-footer-center {
  text-align: center !important;
}

.nav-footer a {
  color: #777 !important;
  transition: all 0.2s ease;
}

.nav-footer a:hover {
  color: var(--primary-green) !important;
}

.nav-footer .bi,
.navbar .bi,
.code-copy-button .bi,
.quarto-code-copy-button .bi {
  display: inline-block !important; /* Ensure icons for footer, navbar, and copy buttons are visible */
}

/* Ensure code block container is positioned for the copy button */
div.sourceCode {
  position: relative !important;
}

.code-copy-button,
.quarto-code-copy-button {
  position: absolute !important;
  top: 6px !important;
  right: 6px !important;
  background: rgba(0, 0, 0, 0.45) !important;
  backdrop-filter: blur(6px) !important;
  -webkit-backdrop-filter: blur(6px) !important;
  color: rgba(255, 255, 255, 0.9) !important;
  border-radius: 6px !important;
  opacity: 0.7 !important;
  visibility: visible !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
  padding: 6px !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  font-size: 0.82rem !important;
  cursor: pointer !important;
  z-index: 10 !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15) !important;
}

.code-copy-button::after,
.quarto-code-copy-button::after {
  content: none !important;
}

.code-copy-button:hover,
.quarto-code-copy-button:hover {
  opacity: 1 !important;
  background: var(--primary-blue) !important;
  color: white !important;
  transform: scale(1.08);
  box-shadow: 0 3px 10px rgba(21, 101, 192, 0.35) !important;
  border-color: rgba(255, 255, 255, 0.2) !important;
}

.code-copy-button:active,
.quarto-code-copy-button:active {
  transform: scale(0.95);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2) !important;
}

.navbar .bi-youtube {
  font-size: 1.2rem;
  transition: color 0.2s ease;
}

.navbar .bi-youtube:hover {
  color: #FF0000 !important; /* YouTube Red on hover */
}

.navbar-logo {
  height: 30px !important;
  margin-right: 10px;
}

/* BREADCRUMB STYLING (Active Course Name) */
.quarto-breadcrumb {
  margin-bottom: 2rem;
  font-size: 1.1rem !important;
  font-weight: 600;
}

.breadcrumb-item a {
  color: var(--primary-blue) !important;
}

.breadcrumb-item.active {
  color: var(--primary-green) !important;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: ">" !important;
  color: #777 !important;
}

/* SUBJECT GRID LAYOUT (Homepage Cards) */
.subject-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 2rem;
  background: #dce4f0;
  border-radius: 12px;
  margin: 2rem 0;
}

.subject-card {
  background: transparent;
  border: 2px solid var(--primary-blue);
  border-radius: 10px;
  padding: 0.85rem 1.2rem;
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.subject-card a {
  color: var(--primary-blue) !important;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none !important;
  display: block;
  width: 100%;
}

.subject-card:hover {
  background: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(21, 101, 192, 0.3);
}

.subject-card:hover a {
  color: #fff !important;
}

@media (max-width: 768px) {
  .subject-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 1rem;
  }
}

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