/* ============================================
   Fluxibly Games - Common Styles
   Brand: Tech Blue (#1a73e8), Light Gray
   Font: Inter, system sans-serif
   ============================================ */

/* CSS Custom Properties */
:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --primary-light: #e8f0fe;
  --primary-hover: #1765cc;
  --secondary: #5f6368;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --text-light: #80868b;
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f1f3f4;
  --border: #dadce0;
  --border-light: #e8eaed;
  --success: #34a853;
  --warning: #fbbc04;
  --danger: #ea4335;
  --hot: #ea4335;
  --new: #34a853;
  --gold: #f9a825;
  --silver: #90a4ae;
  --bronze: #8d6e63;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.08);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.12);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.16);
  --shadow-xl: 0 8px 32px rgba(0,0,0,0.2);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --header-height: 64px;
  --max-width: 1280px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  color: var(--text-primary);
  background: var(--bg-secondary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
  font-size: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Loading Screen
   ============================================ */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.loading-spinner .spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--primary-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-spinner span {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.logo-icon svg {
  width: 100%;
  height: 100%;
}

.logo span {
  white-space: nowrap;
}

/* Search */
.search-box {
  position: relative;
  flex: 1;
  max-width: 480px;
}

.search-box input {
  width: 100%;
  height: 40px;
  padding: 0 40px 0 16px;
  border: 2px solid var(--border);
  border-radius: 20px;
  background: var(--bg-secondary);
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}

.search-box input:focus {
  border-color: var(--primary);
  background: var(--bg-primary);
}

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

.search-btn {
  position: absolute;
  right: 4px;
  top: 4px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

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

.search-suggestions {
  position: absolute;
  top: 48px;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 360px;
  overflow-y: auto;
  display: none;
  z-index: 100;
}

.search-suggestions.active {
  display: block;
}

.search-suggestion-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background var(--transition);
}

.search-suggestion-item:hover {
  background: var(--primary-light);
}

.search-suggestion-item img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.search-suggestion-info {
  flex: 1;
  min-width: 0;
}

.search-suggestion-info .title {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-suggestion-info .cat {
  font-size: 12px;
  color: var(--text-light);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--primary-light);
  color: var(--primary);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.fav-btn {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition);
  font-size: 18px;
}

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

.fav-count {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--text-primary);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 999;
  padding: 20px;
  overflow-y: auto;
}

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

.mobile-menu a {
  display: block;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--primary);
}

.mobile-menu-actions {
  margin-top: 20px;
  display: flex;
  gap: 12px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--text-primary);
  color: #fff;
  padding: 48px 0 24px;
  margin-top: 60px;
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand .logo-icon {
  border-radius: var(--radius-sm);
}

.footer-brand p {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-advantages {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-advantages span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.1);
  padding: 4px 10px;
  border-radius: 20px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  padding: 4px 0;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 0;
  margin-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
  color: rgba(255,255,255,0.8);
}

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition), background var(--transition);
  z-index: 900;
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-hover);
}

/* ============================================
   Shared Components
   ============================================ */

/* Section Header */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-header h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
}

.section-header a {
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Game Card */
.game-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  position: relative;
}

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

.game-card .card-thumb {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.game-card .card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.game-card:hover .card-thumb img {
  transform: scale(1.05);
}

.game-card .card-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: #fff;
  z-index: 2;
}

.card-badge.hot {
  background: var(--hot);
}

.card-badge.new {
  background: var(--new);
}

.game-card .card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  transition: opacity var(--transition);
}

.game-card:hover .card-overlay {
  opacity: 1;
}

.card-overlay-btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: transform var(--transition);
}

.card-overlay-btn.play {
  background: var(--primary);
  color: #fff;
}

.card-overlay-btn.fav {
  background: rgba(255,255,255,0.2);
  color: #fff;
  backdrop-filter: blur(4px);
}

.card-overlay-btn:hover {
  transform: scale(1.05);
}

.game-card .card-body {
  padding: 12px;
}

.game-card .card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.game-card .card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-light);
}

.game-card .card-rating {
  display: flex;
  align-items: center;
  gap: 3px;
  color: var(--warning);
}

.game-card .card-rating span {
  color: var(--text-secondary);
  font-weight: 600;
}

.game-card .card-tags {
  display: flex;
  gap: 4px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.card-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 500;
}

/* Stars Rating */
.stars {
  display: inline-flex;
  gap: 2px;
  font-size: 14px;
  color: var(--border);
}

.stars .filled {
  color: var(--warning);
}

.stars .half {
  position: relative;
  color: var(--border);
}

/* Category Card */
.category-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.category-card .cat-icon {
  font-size: 36px;
  margin-bottom: 10px;
}

.category-card .cat-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.category-card .cat-count {
  font-size: 12px;
  color: var(--text-light);
}

/* Tags */
.tag-filter {
  display: inline-flex;
  white-space: nowrap;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--bg-primary);
  cursor: pointer;
  transition: all var(--transition);
}

.tag-filter:hover,
.tag-filter.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
}

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

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

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

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

.btn-lg {
  padding: 14px 36px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 12px;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 32px;
  flex-wrap: nowrap;
  overflow: hidden;
}

.pagination button {
  min-width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  transition: all var(--transition);
  padding: 0 4px;
  flex-shrink: 0;
}

.pagination button.pagination-ellipsis {
  pointer-events: none;
  border: none;
  background: none;
  min-width: 24px;
  color: var(--text-light);
}

.pagination button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.pagination button.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Page header / breadcrumb */
.page-header {
  padding: 32px 0 24px;
  margin-top: var(--header-height);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb .sep {
  color: var(--border);
}

/* Stat badge */
.stat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.stat-badge svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  .header-inner {
    gap: 12px;
  }

  .logo span {
    display: none;
  }

  .search-box {
    max-width: none;
  }

  .section-header h2 {
    font-size: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }

  .header-inner {
    padding: 0 12px;
  }
}

/* ============================================
   Utility
   ============================================ */
.text-center { text-align: center; }
.text-primary { color: var(--primary) !important; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.hidden { display: none !important; }

/* Game grid shared */
.game-grid {
  display: grid;
  gap: 20px;
}

.game-grid.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.game-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.game-grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 1024px) {
  .game-grid.cols-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .game-grid.cols-4,
  .game-grid.cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .game-grid.cols-4,
  .game-grid.cols-3,
  .game-grid.cols-2 {
    grid-template-columns: 1fr;
  }
}

/* Sidebar layout */
.page-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.sidebar-section {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.sidebar-section h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

@media (max-width: 1024px) {
  .page-with-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text-primary);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}