/* Base styles and CSS variables */
:root {
  /* Light mode colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-accent: #f1f5f9;
  --color-bg-highlight: #e0f2fe;
  --color-bg-danger: #fee2e2;
  
  --color-text-primary: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-text-accent: #3b82f6;
  --color-text-danger: #ef4444;
  
  --color-border: #e2e8f0;
  --color-shadow: rgba(0, 0, 0, 0.05);
  
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-light: #dbeafe;
  
  --color-danger: #ef4444;
  --color-danger-hover: #dc2626;
  
  /* Shared variables */
  --header-height: 64px;
  --sidebar-width: 240px;
  --border-radius: 6px;
}

.dark-mode, html.dark-mode {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-accent: #334155;
  --color-bg-highlight: #1e3a8a;
  --color-bg-danger: #7f1d1d;
  
  --color-text-primary: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-text-accent: #60a5fa;
  --color-text-danger: #f87171;
  
  --color-border: #334155;
  --color-shadow: rgba(0, 0, 0, 0.3);
  
  --color-primary: #60a5fa;
  --color-primary-hover: #93c5fd;
  --color-primary-light: #1e3a8a;
  
  --color-danger: #f87171;
  --color-danger-hover: #ef4444;
}

/* Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.html {
    scroll-behavior: smooth;
}

body, html {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  height: 100%;
  line-height: 1.5;
}

.hidden {
  display: none !important;
}

/* Admin Layout */
.admin-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.admin-header {
  height: var(--header-height);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.5rem;
  height: 100%;
  max-width: 1600px;
  margin: 0 auto;
}

.admin-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.logo-icon {
  height: 28px;
  width: 28px;
  color: var(--color-primary);
}

.admin-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.admin-main {
  display: flex;
  flex: 1;
}

.admin-sidebar {
  width: var(--sidebar-width);
  background-color: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
  overflow-y: auto;
}

.admin-content {
  flex: 1;
  padding: 1.5rem;
  max-width: calc(100% - var(--sidebar-width));
}

/* Admin Navigation */
.admin-nav {
  padding: 1.5rem 0;
}

.admin-nav-list {
  list-style: none;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}

.admin-nav-item.active {
  background-color: var(--color-primary-light);
  color: var(--color-text-accent);
}

.admin-nav-item:hover:not(.active) {
  background-color: var(--color-bg-accent);
  color: var(--color-text-primary);
}

/* Admin Tabs */
.admin-tab {
  display: none;
}

.admin-tab.active {
  display: block;
}

.admin-tab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.admin-tab-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

/* Buttons */
.admin-btn {
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.admin-btn:hover {
  background-color: var(--color-bg-accent);
  color: var(--color-text-primary);
}

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

.admin-btn.primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.admin-btn.danger {
  background-color: var(--color-danger);
  border-color: var(--color-danger);
  color: white;
}

.admin-btn.danger:hover {
  background-color: var(--color-danger-hover);
  border-color: var(--color-danger-hover);
}

.admin-btn.small {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.625rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: 0.875rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.help-text {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

/* Section List */
.section-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.section-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.section-card-header {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
}

.section-card-content {
  padding: 1rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  max-height: 100px;
  overflow: hidden;
  position: relative;
}

.section-card-content::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--color-bg-secondary));
}

.section-card-footer {
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* Navigation Group List */
.nav-group-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

.nav-group-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.nav-group-header {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-group-items {
  padding: 0.5rem 0;
}

.nav-item {
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
}

.nav-item:last-child {
  border-bottom: none;
}

.nav-item-title {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.nav-item-actions {
  display: flex;
  gap: 0.5rem;
}

.nav-group-footer {
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* TOC List */
.toc-list {
  max-width: 600px;
}

.toc-item {
  padding: 0.75rem 1rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  margin-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.toc-item-info {
  display: flex;
  flex-direction: column;
}

.toc-item-title {
  font-weight: 500;
}

.toc-item-details {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.toc-item-actions {
  display: flex;
  gap: 0.5rem;
}

/* Logout button */
.admin-logout {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 100;
}
.admin-logout .admin-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
}

/* Dialog / Modal */
.dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.dialog-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.dialog-content {
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius);
  width: 90%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.dialog-header {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dialog-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.dialog-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
}

.dialog-close:hover {
  color: var(--color-text-primary);
}

.dialog-body {
  padding: 1.5rem;
}

.dialog-footer {
  padding-top: 1rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Settings */
.settings-container {
  max-width: 800px;
}

.settings-group {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
}

.settings-group h3 {
  font-size: 1.125rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

/* Nav Items */
.nav-item-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

.nav-item-row input {
  flex: 1;
}

.remove-btn {
  background: none;
  border: none;
  color: var(--color-text-danger);
  cursor: pointer;
  padding: 0.25rem;
}

.remove-btn:hover {
  color: var(--color-danger);
}

/* Responsive Adjustments */
@media (max-width: 992px) {
  .admin-sidebar {
    width: 200px;
  }
  
  .admin-content {
    max-width: calc(100% - 200px);
  }
}

@media (max-width: 768px) {
  .admin-sidebar {
    position: fixed;
    left: -100%;
    transition: left 0.3s ease;
    z-index: 90;
  }
  
  .admin-sidebar.open {
    left: 0;
  }
  
  .admin-content {
    max-width: 100%;
  }
  
  .section-list, .nav-group-list {
    grid-template-columns: 1fr;
  }
}

/* Utility classes */
.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.text-danger {
  color: var(--color-text-danger);
}