/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700&display=swap');

/* Root Variables */
:root {
  /* Light Mode Colors - Default Blue Theme */
  --primary-color: #0A68FF;
  --primary-hover: #0856CC;
  --secondary-color: #FF9900;
  --secondary-hover: #E6890B;
  --accent-color: #50E3C2;
  --text-primary: #212529;
  --text-secondary: #6C757D;
  --background: #F8F9FA;
  --surface: #FFFFFF;
  --border: #E9ECEF;
  --success: #28A745;
  --error: #DC3545;
  --warning: #FFC107;
  --info: #17A2B8;
  
  /* Chat Colors */
  --chat-sent: #0A68FF;
  --chat-received: #E9ECEF;
  --chat-online: #28A745;
  --chat-offline: #6C757D;
  
  /* Notification Colors */
  --notification-badge: #DC3545;
  --notification-unread: #FFF3CD;
  
  /* Auction Colors */
  --auction-active: #FF6B35;
  --auction-ending: #E74C3C;
  --auction-ended: #95A5A6;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition: 0.3s ease-in-out;
}

/* Green Theme Variables */
[data-theme="green"] {
  --primary-color: #28A745;
  --primary-hover: #1E7E34;
  --secondary-color: #20C997;
  --secondary-hover: #1AA085;
  --accent-color: #6F42C1;
}

/* Orange Theme Variables */
[data-theme="orange"] {
  --primary-color: #FD7E14;
  --primary-hover: #E8690B;
  --secondary-color: #FFC107;
  --secondary-hover: #E0A800;
  --accent-color: #6610F2;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --primary-color: #409CFF;
  --text-primary: #F1F3F5;
  --text-secondary: #ADB5BD;
  --background: #121212;
  --surface: #1E1E1E;
  --border: #343A40;
  --chat-received: #343A40;
  --notification-unread: #495057;
}

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

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

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  transition: var(--transition);
}

/* Arabic Font */
[lang="ar"], [lang="ar"] * {
  font-family: 'Cairo', sans-serif !important;
}

/* RTL Support */
[dir="rtl"] {
  text-align: right;
}

[dir="rtl"] .text-left {
  text-align: right !important;
}

[dir="rtl"] .text-right {
  text-align: left !important;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Typography */
.h1, h1 { font-size: 2.25rem; font-weight: 700; line-height: 1.4; }
.h2, h2 { font-size: 1.75rem; font-weight: 600; line-height: 1.4; }
.h3, h3 { font-size: 1.375rem; font-weight: 600; line-height: 1.5; }
.h4, h4 { font-size: 1.125rem; font-weight: 500; line-height: 1.5; }
.text-sm { font-size: 0.875rem; }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  min-height: 3rem;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background-color: var(--secondary-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  min-height: 2.5rem;
}

/* Header */
.header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--primary-color);
}

[dir="rtl"] .nav-link.active::after {
  right: 0;
  left: 0;
}

/* Search Bar */
.search-bar {
  display: flex;
  background-color: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  max-width: 600px;
  margin: 0 auto;
}

.search-input {
  flex: 1;
  padding: 1rem 1.5rem;
  border: none;
  outline: none;
  font-size: 1rem;
  background-color: transparent;
  color: var(--text-primary);
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.search-btn {
  padding: 1rem 1.5rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, rgba(10, 104, 255, 0.9), rgba(255, 153, 0, 0.9)),
              url('../images/hero-bg.jpg') center/cover no-repeat;
  color: white;
  text-align: center;
  padding: var(--spacing-xl) 0;
  margin-bottom: var(--spacing-xl);
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

/* Cards */
.card {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.card-text {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.card-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-sm);
}

/* Featured Badge */
.featured-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background-color: var(--secondary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  z-index: 10;
}

[dir="rtl"] .featured-badge {
  right: auto;
  left: var(--spacing-sm);
}

/* Categories Grid */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.category-card {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  color: var(--primary-color);
}

.category-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-sm);
  border-radius: 50%;
  background-color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

/* Ads Grid */
.ads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.ad-card {
  position: relative;
}

/* Form Styles */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  background-color: var(--surface);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(10, 104, 255, 0.1);
}

.form-control::placeholder {
  color: var(--text-secondary);
}

/* Filters */
.filters {
  background-color: var(--surface);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: var(--spacing-md);
}

.filter-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  align-items: end;
}

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

.page-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

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

/* Footer */
.footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.footer-link {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: var(--spacing-xs);
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--primary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
}

/* Utilities */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.hidden { display: none; }
.show { display: block; }

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: var(--transition);
  color: var(--text-primary);
}

.theme-toggle:hover {
  background-color: var(--border);
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  background-color: var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.lang-btn {
  padding: 0.5rem 1rem;
  border: none;
  background-color: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  font-weight: 500;
}

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

/* Mobile Navigation */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--surface);
  z-index: 2000;
  padding: var(--spacing-md);
}

.mobile-menu.active {
  display: block;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

.mobile-menu-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

.mobile-nav-menu {
  list-style: none;
}

.mobile-nav-menu li {
  margin-bottom: var(--spacing-sm);
}

.mobile-nav-link {
  display: block;
  padding: var(--spacing-sm);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background-color: var(--primary-color);
  color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .search-bar {
    flex-direction: column;
  }
  
  .search-btn {
    padding: 0.75rem;
  }
  
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ads-grid {
    grid-template-columns: 1fr;
  }
  
  .filter-row {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding: 0 var(--spacing-xs);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
  
  .hero {
    padding: var(--spacing-lg) 0;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .card-body {
    padding: var(--spacing-sm);
  }
}

/* ==========================================================================
   ADVANCED FEATURES STYLES
   ========================================================================== */

/* Notifications System */
.notification-center {
  position: relative;
}

.notification-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background-color: var(--notification-badge);
  color: white;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  animation: pulse 2s infinite;
}

[dir="rtl"] .notification-badge {
  right: auto;
  left: -8px;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.notification-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  width: 350px;
  max-height: 400px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  overflow: hidden;
  display: none;
}

[dir="rtl"] .notification-dropdown {
  right: auto;
  left: 0;
}

.notification-dropdown.active {
  display: block;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.notification-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.notification-item:hover {
  background-color: var(--background);
}

.notification-item.unread {
  background-color: var(--notification-unread);
  border-left: 4px solid var(--primary-color);
}

[dir="rtl"] .notification-item.unread {
  border-left: none;
  border-right: 4px solid var(--primary-color);
}

.notification-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: white;
  flex-shrink: 0;
}

.notification-icon.message { background-color: var(--info); }
.notification-icon.auction { background-color: var(--auction-active); }
.notification-icon.security { background-color: var(--error); }
.notification-icon.system { background-color: var(--success); }

.notification-content {
  flex: 1;
}

.notification-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  font-size: 0.9rem;
}

.notification-text {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.4;
}

.notification-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* Chat System */
.chat-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  height: calc(100vh - 200px);
  margin: var(--spacing-lg) 0;
}

.chat-sidebar {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.chat-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  background-color: var(--background);
}

.chat-search {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

.conversation-list {
  flex: 1;
  overflow-y: auto;
}

.conversation-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}

.conversation-item:hover,
.conversation-item.active {
  background-color: var(--background);
}

.conversation-item.unread {
  background-color: var(--notification-unread);
}

.conversation-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.conversation-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.online-indicator {
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--surface);
}

[dir="rtl"] .online-indicator {
  right: auto;
  left: 2px;
}

.online-indicator.online { background-color: var(--chat-online); }
.online-indicator.offline { background-color: var(--chat-offline); }

.conversation-details {
  flex: 1;
  min-width: 0;
}

.conversation-name {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  font-size: 0.9rem;
}

.conversation-preview {
  color: var(--text-secondary);
  font-size: 0.875rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conversation-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
  align-self: flex-start;
}

.conversation-unread {
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

/* Chat Window */
.chat-window {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-window-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  background-color: var(--background);
}

.chat-user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  position: relative;
}

.chat-user-info h3 {
  margin: 0;
  font-size: 1rem;
}

.chat-user-status {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.chat-actions {
  margin-left: auto;
  display: flex;
  gap: var(--spacing-sm);
}

[dir="rtl"] .chat-actions {
  margin-left: 0;
  margin-right: auto;
}

.chat-messages {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.message-bubble {
  max-width: 70%;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  position: relative;
  word-wrap: break-word;
}

.message-bubble.sent {
  align-self: flex-end;
  background-color: var(--chat-sent);
  color: white;
  margin-left: auto;
}

[dir="rtl"] .message-bubble.sent {
  margin-left: 0;
  margin-right: auto;
}

.message-bubble.received {
  align-self: flex-start;
  background-color: var(--chat-received);
  color: var(--text-primary);
}

.message-time {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-top: var(--spacing-xs);
}

.message-status {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-top: var(--spacing-xs);
}

.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--chat-received);
  border-radius: var(--radius-lg);
  max-width: 70%;
  align-self: flex-start;
  font-style: italic;
  color: var(--text-secondary);
}

.typing-dots {
  display: flex;
  gap: 2px;
}

.typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--text-secondary);
  animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
  0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

.chat-input-area {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border);
  background-color: var(--background);
}

.chat-input-container {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-sm);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm);
}

.chat-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  resize: none;
  min-height: 20px;
  max-height: 100px;
  font-family: inherit;
  font-size: 0.9rem;
  line-height: 1.4;
}

.chat-attachment-btn,
.chat-send-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
}

.chat-attachment-btn:hover {
  background-color: var(--border);
}

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

.chat-send-btn:hover {
  background-color: var(--primary-hover);
}

.chat-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Analytics Dashboard */
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.analytics-card {
  background-color: var(--surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}

.analytics-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.analytics-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  margin: 0 auto var(--spacing-md);
}

.analytics-icon.views { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.analytics-icon.ads { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.analytics-icon.revenue { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.analytics-icon.auctions { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }

.analytics-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.analytics-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.analytics-change {
  margin-top: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 600;
}

.analytics-change.positive { color: var(--success); }
.analytics-change.negative { color: var(--error); }

.chart-container {
  background-color: var(--surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: var(--spacing-lg);
}

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

.chart-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.chart-filters {
  display: flex;
  gap: var(--spacing-sm);
}

.chart-filter-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
}

.chart-filter-btn.active,
.chart-filter-btn:hover {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Auction System */
.auction-timer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, var(--auction-active), var(--auction-ending));
  color: white;
  border-radius: var(--radius-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.timer-block {
  text-align: center;
  background-color: rgba(255, 255, 255, 0.2);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  min-width: 50px;
}

.timer-number {
  font-size: 1.5rem;
  font-weight: 700;
}

.timer-label {
  font-size: 0.75rem;
  opacity: 0.8;
}

.auction-ended .auction-timer {
  background: linear-gradient(135deg, var(--auction-ended), #7f8c8d);
}

.current-bid {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--background);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.bid-amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--auction-active);
  margin-bottom: var(--spacing-xs);
}

.bid-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.bid-form {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.bid-input {
  flex: 1;
  padding: var(--spacing-md);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  font-weight: 600;
}

.bid-input:focus {
  border-color: var(--auction-active);
  outline: none;
}

.bid-submit {
  background-color: var(--auction-active);
  color: white;
  border: none;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.bid-submit:hover {
  background-color: var(--auction-ending);
  transform: translateY(-2px);
}

.bid-history {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.bid-history-header {
  padding: var(--spacing-md);
  background-color: var(--background);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

.bid-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

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

.bidder-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.bidder-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
}

.bid-amount-small {
  font-weight: 600;
  color: var(--auction-active);
}

.bid-time {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Bulk Ads Management */
.bulk-actions-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background-color: var(--background);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--border);
}

.bulk-select {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.ads-table-container {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

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

.ads-table th,
.ads-table td {
  padding: var(--spacing-md);
  text-align: right;
  border-bottom: 1px solid var(--border);
}

[dir="ltr"] .ads-table th,
[dir="ltr"] .ads-table td {
  text-align: left;
}

.ads-table th {
  background-color: var(--background);
  font-weight: 600;
  color: var(--text-primary);
}

.ads-table tr:hover {
  background-color: var(--background);
}

.ad-thumbnail {
  width: 60px;
  height: 45px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.status-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.status-badge.active { background-color: var(--success); color: white; }
.status-badge.pending { background-color: var(--warning); color: white; }
.status-badge.expired { background-color: var(--error); color: white; }

/* Security Center */
.security-dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.security-card {
  background-color: var(--surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  text-align: center;
}

.security-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  margin: 0 auto var(--spacing-md);
}

.security-icon.shield { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.security-icon.warning { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.security-icon.verified { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }

.security-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.security-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.alert-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--background);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--error);
  margin-bottom: var(--spacing-sm);
}

[dir="rtl"] .alert-item {
  border-left: none;
  border-right: 4px solid var(--error);
}

.alert-icon {
  color: var(--error);
  font-size: 1.2rem;
  margin-top: 2px;
}

.alert-content h4 {
  margin: 0 0 var(--spacing-xs) 0;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.alert-content p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.alert-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* Theme Editor */
.theme-editor-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.theme-controls {
  background-color: var(--surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.theme-preview {
  background-color: var(--surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  position: sticky;
  top: var(--spacing-lg);
}

.color-picker-group {
  margin-bottom: var(--spacing-lg);
}

.color-picker-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.color-picker {
  width: 50px;
  height: 40px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  outline: none;
}

.preset-themes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.preset-theme {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  border: 2px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.preset-theme.active {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(10, 104, 255, 0.2);
}

.preset-theme::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    var(--primary-color) 0%, 
    var(--secondary-color) 50%, 
    var(--accent-color) 100%);
}

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

/* Enhanced Media Gallery */
.media-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
}

.media-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.media-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.media-item img,
.media-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.3), rgba(0,0,0,0.7));
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.media-item:hover .media-overlay {
  opacity: 1;
}

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

.media-action {
  background-color: white;
  color: var(--text-primary);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-action:hover {
  background-color: var(--primary-color);
  color: white;
}

.video-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

/* Lightbox Styles */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}

.lightbox-media {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius-md);
}

.lightbox-close {
  position: absolute;
  top: -50px;
  right: 0;
  background: none;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.lightbox-nav:hover {
  background-color: rgba(255, 255, 255, 0.3);
}

.lightbox-prev {
  left: -70px;
}

.lightbox-next {
  right: -70px;
}

/* Enhanced Responsive Design */
@media (max-width: 1024px) {
  .chat-layout {
    grid-template-columns: 1fr;
    height: auto;
  }
  
  .chat-sidebar {
    order: 2;
    height: 300px;
  }
  
  .chat-window {
    order: 1;
    height: 500px;
  }
  
  .theme-editor-layout {
    grid-template-columns: 1fr;
  }
  
  .theme-preview {
    position: static;
  }
  
  .analytics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .notification-dropdown {
    width: 300px;
    right: -50px;
  }
  
  [dir="rtl"] .notification-dropdown {
    right: auto;
    left: -50px;
  }
  
  .analytics-grid {
    grid-template-columns: 1fr;
  }
  
  .chart-filters {
    flex-direction: column;
  }
  
  .auction-timer {
    gap: var(--spacing-xs);
  }
  
  .timer-block {
    min-width: 40px;
    padding: var(--spacing-xs);
  }
  
  .timer-number {
    font-size: 1.2rem;
  }
  
  .bid-form {
    flex-direction: column;
  }
  
  .bulk-actions-bar {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: stretch;
  }
  
  .ads-table-container {
    overflow-x: auto;
  }
  
  .security-dashboard {
    grid-template-columns: 1fr;
  }
  
  .media-gallery {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .lightbox-nav {
    display: none;
  }
}

@media (max-width: 480px) {
  .chat-sidebar {
    height: 250px;
  }
  
  .chat-window {
    height: 400px;
  }
  
  .preset-themes {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .media-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Print Styles */
@media print {
  .notification-dropdown,
  .chat-window,
  .theme-editor-layout,
  .lightbox-overlay {
    display: none !important;
  }
}