/* CSS Variables - Will be dynamically generated by StyleManager */
:root {
  --primary-color: #007cba;
  --secondary-color: #333333;
  --background-color: #ffffff;
  --text-color: #333333;
  --font-family: 'Arial', sans-serif;
  --border-radius: 8px;
  --box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.site-header {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-md) 0;
  box-shadow: var(--box-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.site-logo {
  font-size: 1.5rem;
  font-weight: bold;
  margin: 0;
}

.site-logo a {
  color: white;
  text-decoration: none;
  transition: var(--transition);
}

.site-logo a:hover {
  opacity: 0.8;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  margin: 0;
}

.nav-list a {
  color: white;
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-list a:hover,
.nav-list a.active {
  background: rgba(255, 255, 255, 0.2);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.hamburger {
  width: 20px;
  height: 2px;
  background: white;
  margin: 2px 0;
  transition: var(--transition);
}

/* Search */
.search-container {
  display: flex;
  align-items: center;
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  min-width: 200px;
}

#site-search {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  outline: none;
  font-size: 0.9rem;
}

.search-button {
  background: none;
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  font-size: 1rem;
}

/* Main Content */
.site-main {
  flex: 1;
  padding: var(--spacing-lg) 0;
}

/* Loading and Error States */
.loading-indicator,
.error-message {
  text-align: center;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  margin: var(--spacing-lg) 0;
}

.loading-indicator {
  background: #f8f9fa;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.error-message {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.retry-button {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  cursor: pointer;
  margin-top: var(--spacing-md);
}

/* Content Controls */
.content-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: #f8f9fa;
  border-radius: var(--border-radius);
  flex-wrap: wrap;
}

.filter-controls,
.sort-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.filter-controls label,
.sort-controls label {
  font-weight: 500;
  white-space: nowrap;
}

.feed-filter,
.sort-order {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  background: white;
}

.view-controls {
  display: flex;
  gap: var(--spacing-xs);
  margin-left: auto;
}

.view-button {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid #ddd;
  background: white;
  cursor: pointer;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.view-button.active,
.view-button:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Activity Stream */
.activity-stream {
  margin-bottom: var(--spacing-lg);
}

.activity-stream.grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-lg);
}

.activity-stream.list-view {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* Activity Items */
.activity-item {
  background: white;
  border: 1px solid #e9ecef;
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.activity-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.activity-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.activity-actor {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
}

.actor-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #e9ecef;
}

.actor-info h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--text-color);
}

.actor-info p {
  margin: 0;
  font-size: 0.875rem;
  color: #6c757d;
}

.activity-time {
  font-size: 0.875rem;
  color: #6c757d;
  white-space: nowrap;
}

/* Activity Content */
.activity-content {
  margin-bottom: var(--spacing-md);
}

.activity-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-color);
  line-height: 1.3;
}

.activity-summary {
  color: #6c757d;
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.activity-object {
  margin-bottom: var(--spacing-md);
}

/* Media Attachments */
.activity-attachments {
  margin-bottom: var(--spacing-md);
}

.media-attachment {
  margin-bottom: var(--spacing-sm);
}

.media-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  max-height: 300px;
  object-fit: cover;
}

.media-audio,
.media-video {
  width: 100%;
  border-radius: var(--border-radius);
}

.media-caption {
  font-size: 0.875rem;
  color: #6c757d;
  margin-top: var(--spacing-sm);
  font-style: italic;
}

/* Tags */
.activity-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tag {
  background: #e9ecef;
  border-radius: 12px;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
}

.tag-link {
  color: var(--text-color);
  text-decoration: none;
}

.tag:hover {
  background: var(--primary-color);
}

.tag:hover .tag-link {
  color: white;
}

/* Activity Footer */
.activity-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-md);
  border-top: 1px solid #e9ecef;
  font-size: 0.875rem;
}

.activity-meta {
  display: flex;
  gap: var(--spacing-md);
  color: #6c757d;
}

.activity-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.share-button,
.external-link {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid #ddd;
  background: white;
  color: var(--text-color);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
}

.share-button:hover,
.external-link:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.pagination-button {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 1px solid #ddd;
  background: white;
  color: var(--text-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
}

.pagination-button:hover:not(:disabled) {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.pagination-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.page-info {
  font-weight: 500;
  color: #6c757d;
}

/* Footer */
.site-footer {
  background: #f8f9fa;
  border-top: 1px solid #e9ecef;
  padding: var(--spacing-lg) 0;
  margin-top: auto;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-info,
.footer-links,
.footer-meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links {
  flex-direction: row;
}

.footer-links a {
  color: var(--primary-color);
  text-decoration: none;
  padding: var(--spacing-xs) var(--spacing-sm);
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-info p,
.footer-meta p {
  margin: 0;
  font-size: 0.875rem;
  color: #6c757d;
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[aria-hidden="true"] {
  display: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-content {
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }
  
  .main-nav {
    order: 3;
    width: 100%;
  }
  
  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
  }
  
  .nav-list.show {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .search-container {
    min-width: auto;
    flex: 1;
  }
  
  .content-controls {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }
  
  .view-controls {
    margin-left: 0;
    align-self: center;
  }
  
  .activity-stream.grid-view {
    grid-template-columns: 1fr;
  }
  
  .activity-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .activity-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links {
    flex-direction: column;
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .activity-stream.grid-view {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .activity-stream.grid-view {
    grid-template-columns: repeat(3, 1fr);
  }
}