/* =====================================================
   Modern PC Sales Layout - CSS Variables & Reset
   ===================================================== */

:root {
  /* Color Palette */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #8b5cf6;
  --accent-color: #ec4899;
  
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  --border-color: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

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

body {
  font-family: var(--font-family);
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* =====================================================
   Hero Section
   ===================================================== */

.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="60" height="60" xmlns="http://www.w3.org/2000/svg"><path d="M0 0h60v60H0z" fill="none"/><path d="M30 0v60M0 30h60" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></svg>');
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
  font-weight: 400;
}

.reddit-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid rgba(255, 255, 255, 0.3);
  transition: border-color var(--transition-base);
}

.reddit-link:hover {
  border-bottom-color: var(--text-primary);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-xl);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  display: block;
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.9;
  margin-top: var(--spacing-sm);
}

/* =====================================================
   Filters Section
   ===================================================== */

.filters-section {
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.filters-header {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  align-items: center;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 300px;
  position: relative;
  display: flex;
  align-items: center;
}

.search-box i {
  position: absolute;
  left: var(--spacing-lg);
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg) var(--spacing-md) 3rem;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.view-toggle {
  display: flex;
  gap: var(--spacing-sm);
  background: var(--bg-card);
  padding: var(--spacing-xs);
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
}

.view-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  font-size: 1.1rem;
}

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

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

.filters-container {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

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

.filter-title {
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.filter-title i {
  color: var(--primary-color);
}

.clear-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition-base);
  font-size: 0.875rem;
}

.clear-btn:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.filter-chip {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.filter-chip:hover {
  border-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.filter-chip.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

.chip-count {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.125rem 0.5rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.filter-chip.active .chip-count {
  background: rgba(255, 255, 255, 0.2);
}

/* =====================================================
   Sales Grid
   ===================================================== */

.sales-section {
  padding: var(--spacing-lg) 0 var(--spacing-2xl);
}

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

.sales-grid.list-view {
  grid-template-columns: 1fr;
}

.sale-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.sale-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.sale-card.hidden {
  display: none;
}

.sale-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.sale-time {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-muted);
  font-size: 0.875rem;
}

.sale-category {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.sale-category i {
  font-size: 0.875rem;
  opacity: 0.9;
}

.sale-category:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.sale-category:hover i {
  opacity: 1;
  animation: bounce 0.6s ease;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.sale-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  flex: 1;
}

.sale-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-light);
}

.price-symbol {
  font-size: 1.5rem;
  opacity: 0.8;
}

.sale-price.no-price {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.sale-title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
}

.product-link {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  justify-content: space-between;
}

.product-link .title-text {
  flex: 1;
}

.product-link .external-icon {
  font-size: 0.875rem;
  color: var(--text-muted);
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition-base);
  flex-shrink: 0;
}

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

.product-link:hover .external-icon {
  opacity: 1;
  transform: translateX(0);
  color: var(--primary-light);
}

.sale-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: auto;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.author-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

/* List View Adjustments */
.sales-grid.list-view .sale-card {
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-md);
}

.sales-grid.list-view .sale-card-header {
  min-width: 180px;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.sales-grid.list-view .sale-card-body {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.sales-grid.list-view .sale-price {
  min-width: 100px;
  text-align: center;
  font-size: 1.5rem;
}

.sales-grid.list-view .sale-title {
  flex: 1;
  min-width: 200px;
}

.sales-grid.list-view .sale-meta {
  border: none;
  padding: 0;
  min-width: 150px;
  justify-content: flex-end;
  margin: 0;
}

.sales-grid.list-view .product-link .external-icon {
  opacity: 0.5;
}

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

.footer {
  background: var(--bg-secondary);
  border-top: 2px solid var(--border-color);
  padding: var(--spacing-2xl) 0;
  margin-top: auto;
}

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

.footer-left {
  flex: 1;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.footer-logo i {
  color: var(--primary-color);
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-right {
  text-align: right;
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-divider {
  margin: 0 var(--spacing-sm);
  opacity: 0.5;
}

.footer-link {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

/* =====================================================
   Responsive Design
   ===================================================== */

@media screen and (max-width: 1024px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-stats {
    gap: var(--spacing-xl);
  }
  
  .stat-number {
    font-size: 2rem;
  }
}

@media screen and (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .hero-icon {
    font-size: 3rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .filters-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-box {
    min-width: 100%;
  }
  
  .view-toggle {
    justify-content: center;
  }
  
  .filter-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }
  
  .clear-btn {
    width: 100%;
  }
  
  .sales-grid {
    grid-template-columns: 1fr;
  }
  
  .sales-grid.list-view .sale-card {
    flex-direction: column;
  }
  
  .sales-grid.list-view .sale-card-header {
    min-width: 100%;
  }
  
  .sales-grid.list-view .sale-card-body {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .sales-grid.list-view .sale-title {
    min-width: 100%;
  }
  
  .sales-grid.list-view .sale-meta {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-md);
    width: 100%;
    justify-content: flex-start;
  }
  
  .product-link .external-icon {
    opacity: 0.5 !important;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-right {
    text-align: center;
  }
}

@media screen and (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }
  
  .stat-number {
    font-size: 1.75rem;
  }
  
  .filters-container {
    padding: var(--spacing-lg);
  }
  
  .sale-card {
    padding: var(--spacing-lg);
  }
  
  .sale-price {
    font-size: 1.5rem;
  }
}

/* =====================================================
   Animations & Utilities
   ===================================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.sale-card {
  animation: fadeIn 0.5s ease-out;
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection */
::selection {
  background: var(--primary-color);
  color: white;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}