/* ==========================================
   CHESS APP SPECIFIC STYLES
   Import general styles first: <link rel="stylesheet" href="/styles/base.css?v=<?= filemtime('styles/base.css'); ?>">
   Then import this file: <link rel="stylesheet" href="/styles/styles.css?v=<?= filemtime('styles/styles.css'); ?>">
   
   This file uses variables and classes from styles.css
   ========================================== */

:root {
  /* Layout Dimensions */
  --topbar-height: 60px;
  --sidebar-width: 80px;
}


/* ==========================================
   TOPBAR NAVIGATION
   Uses: var(--color-primary), var(--space-*), var(--shadow-md)
   ========================================== */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  background-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  z-index: 9999;
}

.topbar-content {
  max-width: 100%;
  height: 100%;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-img {
  width: 50px !important;
  height: 50px !important;
  max-width: 50px !important;
  max-height: 50px !important;
  object-fit: contain !important;
  vertical-align: middle !important;
  margin-right: 8px !important;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-item a {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  color: rgba(255, 255, 255, 0.9);
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-item a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.nav-item a.active {
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}


/* ==========================================
   SIDEBAR
   Uses: var(--bg-primary), var(--color-gray-*), var(--radius-*)
   ========================================== */

.sidebar {
  position: fixed;
  top: var(--topbar-height);
  right: 0;
  bottom: 0;
  width: var(--sidebar-width);
  height: auto;
  max-height: calc(100vh - var(--topbar-height));
  background-color: var(--bg-primary);
  border-left: 1px solid var(--color-gray-200);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-lg) 0;
  gap: 0;
  z-index: var(--z-sticky);
  overflow-y: auto;
}

.sidebar-icons {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  overflow-y: auto;
}

.sidebar-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.sidebar-icon:hover {
  background-color: var(--bg-secondary);
  color: var(--color-primary);
}

.sidebar-icon svg {
  width: 24px;
  height: 24px;
}

.profile-pic {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 2px solid var(--color-gray-200);
  transition: var(--transition-fast);
  object-fit: cover;
  flex-shrink: 0;
  margin-top: auto
}

.profile-pic:hover {
  border-color: var(--color-primary);
  transform: scale(1.05);
}


/* ==========================================
   MAIN CONTENT LAYOUT
   ========================================== */

.main-content {
  margin-top: var(--topbar-height);
  margin-right: var(--sidebar-width);
  padding: var(--space-2xl);
  min-height: calc(100vh - var(--topbar-height));
}


/* ==========================================
   WELCOME SECTION
   Uses: var(--color-primary), var(--color-secondary), var(--shadow-lg)
   ========================================== */

.welcome-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  color: var(--color-white);
  box-shadow: var(--shadow-lg);
}

.welcome-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.welcome-subtitle {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2xl);
  opacity: 0.95;
  color: var(--color-white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.stat-card {
  background-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: var(--transition-base);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-card:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.stat-number {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-xs);
  color: var(--color-white);
}

.stat-label {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.9;
  color: var(--color-white);
}

/* ==========================================
   STATS GRID - CAROUSEL FOR MOBILE
   ========================================== */

/* Tablet carousel styles - 2 cards per view */
@media (max-width: 1024px) {
  .stats-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    gap: var(--space-md);
    padding-bottom: var(--space-sm);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    /* Firefox */
  }

  .stats-grid::-webkit-scrollbar {
    display: none;
    /* Chrome, Safari, Edge */
  }

  .stat-card {
    flex: 0 0 calc(50% - var(--space-md) / 2);
    scroll-snap-align: start;
    min-width: calc(50% - var(--space-md) / 2);
  }
}

/* Mobile carousel styles - 1 card per view */
@media (max-width: 768px) {
  .stat-card {
    flex: 0 0 calc(100% - var(--space-xl));
    scroll-snap-align: center;
    min-width: calc(100% - var(--space-xl));
  }
}

@media (max-width: 480px) {
  .stats-grid {
    gap: var(--space-sm);
  }

  .stat-card {
    flex: 0 0 calc(100% - var(--space-lg));
    min-width: calc(100% - var(--space-lg));
  }
}

/* ==========================================
   MATCHES SECTION
   Uses: .card styles extended from base.css
   ========================================== */

/* ==========================================
   MATCHES SECTION - LIST VIEW
   Replace the existing .matches-section styles with these
   ========================================== */

.matches-section {
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-xl);
  color: var(--text-primary);
}

/* List Layout (replaces grid) */
.matches-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

  50% {
    transform: scale(1.02);
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3);
  }
}

/* Match Card as List Item */
.match-card {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--color-gray-200);
  border-left: 4px solid transparent;
  padding: var(--space-lg) var(--space-xl);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.match-card:last-child {
  border-bottom: none;
}

/* Highlight when it's user's turn */
.match-card.user-turn {
  border-left-color: var(--color-primary);
  background-color: rgba(249, 115, 22, 0.02);
}

.match-card:hover {
  background-color: var(--bg-secondary);
  border-left-color: var(--color-primary);
}

.match-card.user-turn:hover {
  background-color: rgba(249, 115, 22, 0.05);
}

/* Match Header - Now inline with content */
.match-header {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex: 1;
  min-width: 0;
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.match-players {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 200px;
}

.match-players .game-id {
  color: var(--color-primary);
  font-weight: var(--font-bold);
}

/* Badge Container - Allows multiple badges */
.match-badges {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Match Status Badge */
.match-status {
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  white-space: nowrap;
}

.status-active {
  background-color: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.status-waiting {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.status-finished {
  background-color: var(--color-gray-200);
  color: var(--text-secondary);
}

/* Additional Badge Styles (for future use) */
.badge-online {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid var(--color-success);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  white-space: nowrap;
}

.badge-vip {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  color: var(--color-white);
  border: 1px solid #f59e0b;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  white-space: nowrap;
}

.badge-tournament {
  background-color: rgba(8, 145, 178, 0.1);
  color: var(--color-secondary);
  border: 1px solid var(--color-secondary);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  white-space: nowrap;
}

/* Match Info - Now horizontal */
.match-info {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-left: auto;
}

.match-info span {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  white-space: nowrap;
}

.match-info .time-info {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  min-width: 100px;
}

.match-info .last-move-info {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  min-width: 120px;
}

.your-turn {
  color: var(--color-primary) !important;
  font-weight: var(--font-semibold);
}

/* No Matches State */
.no-matches {
  padding: var(--space-3xl) var(--space-lg);
}

.no-matches p {
  margin-bottom: var(--space-md);
}

.no-matches a {
  color: var(--color-primary);
  font-weight: var(--font-semibold);
}

.no-matches a:hover {
  color: var(--color-primary-dark);
}

/* ==========================================
   RESPONSIVE DESIGN FOR MATCHES
   ========================================== */

@media (max-width: 1024px) {
  .match-card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .match-header {
    width: 100%;
    flex-wrap: wrap;
  }

  .match-info {
    width: 100%;
    margin-left: 0;
    gap: var(--space-md);
  }
}

@media (max-width: 768px) {
  .match-card {
    padding: var(--space-md);
  }

  .match-card.user-turn:hover {
    background-color: rgba(249, 115, 22, 0.05);
  }

  .match-players {
    min-width: auto;
    font-size: var(--text-base);
  }

  .match-badges {
    width: 100%;
  }

  .match-info {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .match-info .time-info,
  .match-info .last-move-info {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .matches-section {
    padding: var(--space-lg);
  }

  .section-title {
    font-size: var(--text-2xl);
  }

  .match-status,
  .badge-online,
  .badge-vip {
    font-size: 10px;
    padding: 4px 8px;
  }
}


/* ==========================================
   PROFILE POPUP
   Uses: var(--shadow-2xl), var(--z-popover)
   ========================================== */

.profile-popup {
  position: fixed;
  bottom: var(--space-xl);
  right: calc(var(--sidebar-width) + var(--space-xl));
  width: 320px;
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  padding: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-base);
  z-index: var(--z-popover);
  border: 1px solid var(--color-gray-200);
}

.profile-popup.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.profile-header {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
  transition: all 0.3s;
}

.profile-header:hover {
  background: var(--bg-secondary);
  border-radius: 10px;
}

.profile-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-primary);
  object-fit: cover;
}

.profile-details h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.profile-details p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: 0;
}

.profile-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

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

.profile-stat span:first-child {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.profile-stat span:last-child {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

/* Extends .btn from base.css */
.logout-btn {
  width: 100%;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-error);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: var(--transition-fast);
}

.logout-btn:hover {
  background-color: #dc2626;
  box-shadow: var(--shadow-md);
}


/* ==========================================
   CHALLENGE PAGE - PLAYER LIST
   ========================================== */

.player-list {
  display: flex;
  flex-direction: column;
}

.player-list-item {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
  transition: var(--transition-fast);
}

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

.player-list-item:hover {
  background-color: var(--bg-secondary);
}

/* Override card hover effects for challenge page */
.card:hover {
  transform: none;
}

.player-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--color-gray-200);
}

.player-stats {
  display: flex;
  gap: var(--space-md);
  font-size: var(--text-sm);
  align-items: center;
}

.stat-win {
  color: var(--color-success);
  font-weight: var(--font-medium);
}

.stat-loss {
  color: var(--color-error);
  font-weight: var(--font-medium);
}

.stat-draw {
  color: var(--color-warning);
  font-weight: var(--font-medium);
}

.stat-info {
  color: var(--text-secondary);
}

.btn-challenge {
  white-space: nowrap;
}

.flex-grow-1 {
  flex: 1;
}

.recommended-section {
  border: 2px solid var(--color-warning);
}

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

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


/* ==========================================
   EMPTY STATE
   ========================================== */

.empty-state {
  text-align: center;
  padding: var(--space-4xl) var(--space-lg);
  color: var(--text-secondary);
}

.empty-state svg {
  margin: 0 auto var(--space-lg);
  opacity: 0.5;
}

.empty-state h4 {
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
}

.empty-state p {
  margin: 0;
}


/* ==========================================
   MODAL
   ========================================== */

.modal-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: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

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

.modal {
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.9);
  transition: var(--transition-base);
  overflow-y: auto;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--text-3xl);
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-xl);
  overflow-y: auto;
}

.modal-footer {
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--color-gray-200);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
}


/* ==========================================
   TIME CONTROL SECTIONS
   ========================================== */

.time-control-section {
  background-color: var(--bg-secondary);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
}

.time-control-section:last-child {
  margin-bottom: 0;
}

.time-control-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.radio-card {
  display: block;
  position: relative;
  cursor: pointer;
  margin-bottom: var(--space-sm);
}

.radio-card input[type="radio"] {
  position: absolute;
  opacity: 0;
}

.radio-card-content {
  display: flex;
  flex-direction: column;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--bg-primary);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.radio-card-content strong {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

.radio-card-content span {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.radio-card:hover .radio-card-content {
  border-color: var(--color-primary);
  background-color: rgba(249, 115, 22, 0.05);
}

.radio-card input[type="radio"]:checked+.radio-card-content {
  border-color: var(--color-primary);
  background-color: rgba(249, 115, 22, 0.1);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}


/* ==========================================
   SEARCH FORM
   ========================================== */

.search-form .form-group {
  margin-bottom: 0;
}

/* ==========================================
   SEARCH AND FILTER SECTION
   ========================================== */

.search-container {
  position: relative;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.search-input-wrapper .form-input {
  flex: 1;
  padding-right: 3rem;
}

.filter-toggle-icon {
  position: absolute;
  right: var(--space-md);
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  pointer-events: none;
}

.search-input-wrapper .form-input:focus~.filter-toggle-icon,
.filter-section.active~.search-input-wrapper .filter-toggle-icon {
  color: var(--color-primary);
  transform: rotate(180deg);
}

.filter-section {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all var(--transition-base);
  margin-top: 0;
}

.filter-section.active {
  max-height: 500px;
  opacity: 1;
  margin-top: var(--space-md);
}


/* ==========================================
   RESPONSIVE DESIGN
   Uses responsive breakpoints
   ========================================== */

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .matches-grid {
    grid-template-columns: 1fr;
  }

  .search-form .grid {
    grid-template-columns: 1fr;
  }

  .time-control-section .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .topbar-content {
    padding: 0 var(--space-md);
  }

  .nav-menu {
    gap: 0;
  }

  .nav-item a {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
  }

  .sidebar {
    width: 60px;
    bottom: 0;
    height: auto;
    max-height: calc(100vh - var(--topbar-height));
  }

  .main-content {
    margin-right: 60px;
    padding: var(--space-lg);
  }

  .welcome-section {
    padding: var(--space-lg);
  }

  .welcome-title {
    font-size: var(--text-3xl);
  }

  .welcome-subtitle {
    font-size: var(--text-lg);
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .stat-card {
    padding: var(--space-md);
  }

  .stat-number {
    font-size: var(--text-3xl);
  }

  .profile-popup {
    right: calc(60px + var(--space-md));
    width: 280px;
  }

  .player-list-item {
    padding: var(--space-md);
  }

  .player-stats {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .modal {
    width: 95%;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: var(--text-lg);
  }

  /* Only hide when NOT open */
  .nav-menu:not(.open) {
    display: none;
  }

  /* Force display when open */
  .nav-menu.open {
    display: flex !important;
  }

  .sidebar {
    width: 50px;
    bottom: 0;
    height: auto;
    max-height: calc(100vh - var(--topbar-height));
  }

  .main-content {
    margin-right: 50px;
    padding: var(--space-md);
  }

  .profile-popup {
    right: var(--space-md);
    bottom: var(--space-md);
    width: calc(100vw - var(--space-2xl));
  }
}

/* ==========================================
   NOTIFICATION CENTER STYLES
   ========================================== */

/* Notification Badge on Sidebar Icon */
.notification-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  background-color: #0891b2;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: var(--font-bold);
  color: var(--color-white);
  border: 2px solid var(--bg-primary);
  animation: pulse 2s infinite;
  z-index: 10;
}

.notification-badge.highlighted {
  background-color: #f59e0b;
}

/* Notification Center Container */
.notification-center {
  position: fixed;
  top: var(--topbar-height);
  right: var(--sidebar-width);
  width: 420px;
  max-height: calc(100vh - var(--topbar-height) - var(--space-xl));
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl) 0 0 var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  opacity: 0;
  visibility: hidden;
  transform: translateX(100%);
  transition: all var(--transition-base);
  z-index: 9998;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-gray-200);
  border-right: none;
}

.notification-center.active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

/* Notification Header */
.notification-header {
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 2px solid var(--color-gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--radius-xl) 0 0 0;
}

.notification-header h3 {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-white);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.notification-close {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  color: var(--color-white);
}

.notification-close:hover {
  background: rgba(255, 255, 255, 0.3);
}

.notification-close svg {
  width: 20px;
  height: 20px;
}

/* Notification List */
.notification-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
}

.notification-list::-webkit-scrollbar {
  width: 8px;
}

.notification-list::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.notification-list::-webkit-scrollbar-thumb {
  background: var(--color-gray-400);
  border-radius: var(--radius-md);
}

.notification-list::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-500);
}

/* Individual Notification Item */
.notification-item {
  background-color: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.notification-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(-4px);
}

.notification-item.unread {
  background-color: rgba(8, 145, 178, 0.05);
  border-left: 4px solid var(--color-secondary);
}

.notification-item.highlighted {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.1) 0%, rgba(234, 88, 12, 0.05) 100%);
  border: 2px solid var(--color-primary);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.notification-item.with-redirect {
  border: 1px solid var(--color-secondary);
  border-left: 4px solid var(--color-secondary);
}

.notification-item.with-redirect.unread {
  border-left: 4px solid var(--color-secondary);
}

.notification-item.highlighted.with-redirect {
  border: 2px solid var(--color-primary);
}

/* Notification Content */
.notification-content {
  display: flex;
  gap: var(--space-md);
}

.notification-main {
  flex: 1;
  min-width: 0;
}

.notification-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.notification-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-sm);
}

.notification-time {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.notification-time svg {
  width: 12px;
  height: 12px;
}

/* Notification Elements */
.notification-element {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  white-space: nowrap;
  min-width: 60px;
}

.element-rating-positive {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.element-rating-negative {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.element-rating {
  background-color: rgba(249, 115, 22, 0.1);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

/* Notification Button */
.notification-button {
  margin-top: var(--space-sm);
  width: 100%;
}

.notification-button button {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  cursor: pointer;
  transition: var(--transition-fast);
}

.notification-button button:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

/* Context Menu */
.notification-context-menu {
  position: fixed;
  background-color: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-xs);
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.95);
  transition: all var(--transition-fast);
}

.notification-context-menu.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.context-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.context-menu-item:hover {
  background-color: var(--bg-secondary);
}

.context-menu-item.danger:hover {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

.context-menu-item svg {
  width: 16px;
  height: 16px;
}

/* Empty State */
.notification-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-4xl) var(--space-lg);
  text-align: center;
  color: var(--text-tertiary);
}

.notification-empty svg {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-lg);
  opacity: 0.5;
}

.notification-empty h4 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.notification-empty p {
  font-size: var(--text-sm);
  margin: 0;
}

/* Tutorial Overlay */
.tutorial-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 10001;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

.tutorial-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  max-width: 500px;
  width: 90%;
  padding: var(--space-2xl);
  z-index: 10002;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.tutorial-overlay.active .tutorial-popup {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.tutorial-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  color: var(--color-primary);
}

.tutorial-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.tutorial-content {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.tutorial-steps {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.tutorial-step {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.tutorial-step:last-child {
  margin-bottom: 0;
}

.tutorial-step-icon {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.tutorial-step-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.tutorial-actions {
  display: flex;
  gap: var(--space-md);
}

.tutorial-actions button {
  flex: 1;
  padding: var(--space-md);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.tutorial-btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.tutorial-btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.tutorial-btn-secondary:hover {
  background-color: var(--color-gray-300);
}

/* Responsive Design */
@media (max-width: 768px) {
  .notification-center {
    right: 60px;
    width: calc(100vw - 60px - var(--space-xl));
  }
}

@media (max-width: 480px) {
  .notification-center {
    right: 0;
    width: 100vw;
    border-radius: 0;
    max-height: calc(100vh - var(--topbar-height));
  }

  .notification-header {
    border-radius: 0;
  }

  .tutorial-popup {
    width: 95%;
    padding: var(--space-xl);
  }
}