/* ============================================
   US Vehicle Trends - Modern Clean Design
   Gray theme with clean typography
   ============================================ */

/* CSS Variables */
:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-accent: #10b981;

  /* Gray palette */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

/* Import Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ============================================
   Base Typography
   ============================================ */

body {
  font-family: var(--font-sans);
  color: var(--gray-800);
  line-height: 1.6;
  background-color: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}

p {
  color: var(--gray-600);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary-hover);
}

/* ============================================
   Main Content Area
   ============================================ */

.main-container,
#quarto-content {
  background-color: var(--gray-50);
}

/* Page title styling */
.title {
  font-weight: 700;
  color: var(--gray-900);
  border-bottom: 1px solid var(--gray-200);
}

/* ============================================
   Sidebar Navigation
   ============================================ */

#quarto-sidebar,
.sidebar {
  background-color: var(--gray-100) !important;
  border-right: 1px solid var(--gray-200);
}

.sidebar-title,
#quarto-sidebar .sidebar-title {
  color: var(--gray-900) !important;
  font-weight: 600;
  border-bottom: 1px solid var(--gray-200);
}

.sidebar-navigation .sidebar-item {
  margin-top: 10px;
  margin-bottom: 10px;
}

.sidebar-navigation .sidebar-item .sidebar-item-text,
.sidebar-navigation a {
  color: var(--gray-600) !important;
  font-weight: 500;
  transition: color 0.15s ease;
}

.sidebar-navigation .sidebar-item:hover .sidebar-item-text,
.sidebar-navigation a:hover {
  color: var(--color-primary) !important;
  background-color: transparent !important;
}

.sidebar-navigation .sidebar-item.active .sidebar-item-text,
.sidebar-navigation a.active,
.sidebar-navigation .sidebar-item-container > .active,
.sidebar-navigation .sidebar-item-container > .active .sidebar-item-text {
  color: var(--color-primary) !important;
  font-weight: 600;
  background-color: transparent !important;
}

/* Sidebar logo - remove hover highlight */
.sidebar-logo-link,
.sidebar-logo-link:hover,
.sidebar-logo-link a,
.sidebar-logo-link a:hover {
  background-color: transparent !important;
}

/* Sidebar icons */
.sidebar-item i,
.sidebar .bi {
  color: var(--gray-500);
}

.sidebar-item:hover i,
.sidebar-item.active i {
  color: var(--color-primary);
}

/* ============================================
   Panel Tabset (Charts/Data tabs)
   ============================================ */

.panel-tabset {
  background-color: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.panel-tabset .nav-tabs {
  background-color: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
}

.panel-tabset .nav-tabs .nav-link {
  color: var(--gray-600);
  font-weight: 500;
  border: none;
  background-color: transparent;
  transition: all 0.15s ease;
}

.panel-tabset .nav-tabs .nav-link:hover {
  color: var(--gray-900);
  background-color: var(--gray-200);
}

.panel-tabset .nav-tabs .nav-link.active {
  color: var(--gray-900);
  background-color: white;
  border-bottom: 2px solid var(--color-primary);
}

/* ============================================
   Tables (reactable & standard)
   ============================================ */

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background-color: var(--gray-100);
  border-bottom: 2px solid var(--gray-200);
}

thead th {
  color: var(--gray-700);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-align: left;
}

tbody tr {
  border-bottom: 1px solid var(--gray-100);
}

tbody tr:hover {
  background-color: var(--gray-50);
}

tbody td {
  color: var(--gray-700);
}

/* Reactable specific */
.reactable {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.rt-thead {
  background-color: var(--gray-100) !important;
}

.rt-th {
  font-weight: 600 !important;
  color: var(--gray-700) !important;
  border-bottom: 2px solid var(--gray-200) !important;
}

.rt-tr-group:hover {
  background-color: var(--gray-50) !important;
}

.rt-search {
  border: 1px solid var(--gray-300) !important;
  border-radius: var(--radius-md) !important;
}

.rt-search:focus {
  border-color: var(--color-primary) !important;
  outline: none !important;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2) !important;
}

/* Pagination */
.rt-pagination {
  border-top: 1px solid var(--gray-200);
  background-color: var(--gray-50);
}

.rt-pagination button {
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background-color: white;
  color: var(--gray-700);
  transition: all 0.15s ease;
}

.rt-pagination button:hover:not(:disabled) {
  background-color: var(--gray-100);
  border-color: var(--gray-400);
}

.rt-pagination select {
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background-color: white;
}

/* ============================================
   Buttons
   ============================================ */

.btn,
.btn-slides,
.btn-notes {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-slides {
  background-color: var(--color-primary);
  color: white;
}

.btn-slides:hover {
  background-color: var(--color-primary-hover);
  color: white;
}

.btn-notes {
  background-color: var(--gray-800);
  color: white;
}

.btn-notes:hover {
  background-color: var(--gray-900);
  color: white;
}

/* Download link styling */
a[href*="download"],
a[href$=".csv"] {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--gray-100);
  color: var(--gray-700);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.15s ease;
}

a[href*="download"]:hover,
a[href$=".csv"]:hover {
  background-color: var(--gray-200);
  color: var(--gray-900);
}

/* ============================================
   Blockquotes & Callouts
   ============================================ */

blockquote {
  background-color: var(--gray-100);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--gray-700);
}

blockquote h3 {
  margin-top: 0;
  color: var(--gray-900);
}

/* ============================================
   Iframes (Posit embeds)
   ============================================ */

iframe {
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  background-color: white;
}

/* ============================================
   Footer
   ============================================ */

.page-footer {
  background-color: var(--gray-100);
  border-top: 1px solid var(--gray-200);
  color: var(--gray-600);
}

.page-footer a {
  color: var(--gray-600);
}

.page-footer a:hover {
  color: var(--gray-900);
}

/* ============================================
   TOC (Table of Contents)
   ============================================ */

#quarto-sidebar-glass-pane {
  display: none;
}

#TOC a,
.toc a,
#TOC .nav-link,
.toc-actions a {
  color: var(--gray-600) !important;
  transition: all 0.15s ease;
}

#TOC a:hover,
.toc a:hover,
#TOC .nav-link:hover {
  color: var(--gray-900) !important;
}

#TOC a.active,
.toc a.active,
#TOC .nav-link.active,
.sidebar-navigation .nav-link.active {
  color: var(--gray-900) !important;
  background-color: transparent !important;
}

/* Override any green/teal accent colors in TOC */
.nav-link.active .nav-link-text,
#toc-title {
  color: var(--gray-700) !important;
}

/* ============================================
   Utility Classes
   ============================================ */

.class-buttons {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Center utility */
center {
  display: flex;
  flex-direction: column;
  align-items: center;
}