/* Form Challenge Styles - Modern UI with Neon Orange Theme */

:root {
  /* Light Mode Colors */
  --primary-orange: #FF6B35;
  --neon-orange: #FF4500;
  --neon-orange-glow: 0 0 20px rgba(255, 69, 0, 0.5);
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --text-primary: #1A1A1A;
  --text-secondary: #6C757D;
  --border-color: #E0E0E0;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  
  /* Status Colors */
  --success-color: #28A745;
  --warning-color: #FFC107;
  --danger-color: #DC3545;
  --info-color: #17A2B8;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg-primary: #0A0A0A;
  --bg-secondary: #1A1A1A;
  --text-primary: #FFFFFF;
  --text-secondary: #B0B0B0;
  --border-color: #333333;
  --shadow-sm: 0 2px 4px rgba(255, 69, 0, 0.2);
  --shadow-md: 0 4px 8px rgba(255, 69, 0, 0.3);
  --shadow-lg: 0 8px 16px rgba(255, 69, 0, 0.4);
}

/* Form Challenge Card */
.form-challenge-card {
  background: var(--bg-primary);
  border: 2px solid transparent;
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.form-challenge-card:hover {
  border-color: var(--neon-orange);
  box-shadow: var(--neon-orange-glow), var(--shadow-md);
  transform: translateY(-2px);
}

.form-challenge-card.active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--neon-orange), var(--primary-orange));
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Challenge Header */
.form-challenge-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.challenge-type-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--neon-orange);
  color: white;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
}

.status-badge {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-info { background: var(--info-color); color: white; }
.badge-success { background: var(--success-color); color: white; }
.badge-secondary { background: var(--text-secondary); color: white; }
.badge-danger { background: var(--danger-color); color: white; }

/* Challenge Body */
.challenge-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-family: 'Poppins', sans-serif;
}

.challenge-description {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.target-exercise {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-radius: 8px;
  margin-bottom: 16px;
  color: var(--neon-orange);
  font-weight: 600;
}

/* Challenge Meta */
.challenge-meta {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
}

.meta-item i {
  color: var(--neon-orange);
}

/* Difficulty Stars */
.meta-item .fa-star {
  font-size: 12px;
  margin: 0 1px;
}

.fa-star.filled {
  color: var(--neon-orange);
}

.fa-star.empty {
  color: var(--border-color);
}

/* Scoring Criteria */
.scoring-criteria {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.scoring-criteria h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.criteria-list {
  display: grid;
  gap: 8px;
}

.criteria-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.criteria-weight {
  font-weight: 700;
  color: var(--neon-orange);
}

/* User Progress */
.user-progress {
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
  border: 1px solid var(--neon-orange);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.progress-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 16px;
  text-align: center;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--neon-orange);
}

.stat-value.positive {
  color: var(--success-color);
}

.stat-value.negative {
  color: var(--danger-color);
}

/* Challenge Prizes */
.challenge-prizes {
  margin-bottom: 16px;
}

.prize-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.prize-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-secondary);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.prize-item.rank-1 {
  border: 2px solid #FFD700;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), var(--bg-secondary));
}

.prize-item.rank-1:hover {
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

.prize-rank {
  font-size: 18px;
  font-weight: 700;
  color: var(--neon-orange);
}

/* Challenge Footer */
.form-challenge-footer {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Inter', sans-serif;
}

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

.btn-primary:hover {
  background: var(--primary-orange);
  box-shadow: var(--neon-orange-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--neon-orange);
  color: var(--neon-orange);
}

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

.btn-success:hover {
  background: #22883a;
  transform: translateY(-1px);
}

/* Form Score Display */
.form-score-display {
  background: var(--bg-primary);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-md);
}

/* Overall Score Section */
.overall-score-container {
  display: flex;
  gap: 32px;
  align-items: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.score-circle {
  position: relative;
  width: 200px;
  height: 200px;
}

.score-circle svg {
  transform: rotate(-90deg);
}

.score-bg {
  fill: none;
  stroke: var(--border-color);
  stroke-width: 10;
}

.score-progress {
  fill: none;
  stroke: var(--neon-orange);
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 1.5s ease-out;
  filter: drop-shadow(0 0 10px var(--neon-orange));
}

.score-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.score-number {
  display: block;
  font-size: 48px;
  font-weight: 800;
  color: var(--neon-orange);
  font-family: 'Poppins', sans-serif;
}

.score-label {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

/* Grade Badge */
.grade-badge {
  padding: 16px 32px;
  border-radius: 12px;
  text-align: center;
  background: var(--bg-secondary);
  border: 2px solid;
}

.grade-badge.grade-a\+,
.grade-badge.grade-a {
  border-color: var(--success-color);
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.1), var(--bg-secondary));
}

.grade-badge.grade-b\+,
.grade-badge.grade-b {
  border-color: var(--neon-orange);
  background: linear-gradient(135deg, rgba(255, 69, 0, 0.1), var(--bg-secondary));
}

.grade-badge.grade-c\+,
.grade-badge.grade-c {
  border-color: var(--warning-color);
  background: linear-gradient(135deg, rgba(255, 193, 7, 0.1), var(--bg-secondary));
}

.grade-letter {
  display: block;
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 4px;
  font-family: 'Poppins', sans-serif;
}

/* Score Trend */
.score-trend {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 600;
}

.score-trend.up {
  background: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
}

.score-trend.down {
  background: rgba(220, 53, 69, 0.1);
  color: var(--danger-color);
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.metric-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 20px;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

.metric-card:hover {
  border-color: var(--neon-orange);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.metric-card.excellent {
  border-color: var(--success-color);
}

.metric-card.good {
  border-color: var(--neon-orange);
}

.metric-card.fair {
  border-color: var(--warning-color);
}

.metric-card.poor {
  border-color: var(--danger-color);
}

.metric-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.metric-header i {
  font-size: 24px;
  color: var(--neon-orange);
}

.metric-score {
  display: flex;
  align-items: center;
  gap: 12px;
}

.score-bar {
  flex: 1;
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}

.score-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--neon-orange), var(--primary-orange));
  border-radius: 4px;
  width: 0;
  transition: width 1s ease-out;
}

.score-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 50px;
  text-align: right;
}

/* Rep Analysis Chart */
.rep-analysis-chart {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 20px;
}

.rep-analysis-chart h4 {
  margin-bottom: 16px;
  color: var(--text-primary);
}

#repAnalysisChart {
  width: 100%;
  height: 200px;
}

/* Form Issues */
.form-issues {
  margin-bottom: 32px;
}

.no-issues {
  text-align: center;
  padding: 40px;
  color: var(--success-color);
}

.no-issues i {
  font-size: 48px;
  margin-bottom: 16px;
  display: block;
}

.issues-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.issue-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 16px;
  border-left: 4px solid;
  transition: all 0.3s ease;
}

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

.issue-card.severity-minor {
  border-color: var(--info-color);
}

.issue-card.severity-moderate {
  border-color: var(--warning-color);
}

.issue-card.severity-major {
  border-color: var(--danger-color);
}

.issue-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.issue-title {
  flex: 1;
  font-weight: 600;
  color: var(--text-primary);
}

.issue-frequency {
  font-size: 14px;
  color: var(--text-secondary);
}

.issue-correction {
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.affected-reps {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Improvement Suggestions */
.improvement-suggestions {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
}

.strengths {
  margin-bottom: 24px;
}

.strengths h4,
.focus-areas h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.strengths ul {
  list-style: none;
  padding: 0;
}

.strengths li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  color: var(--text-secondary);
}

.strengths li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success-color);
  font-weight: bold;
}

.focus-cards {
  display: grid;
  gap: 16px;
}

.focus-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 16px;
  border-left: 4px solid;
}

.focus-card.priority-high {
  border-color: var(--danger-color);
}

.focus-card.priority-medium {
  border-color: var(--warning-color);
}

.focus-card.priority-low {
  border-color: var(--info-color);
}

.area-name {
  font-weight: 600;
  color: var(--text-primary);
  display: block;
  margin-bottom: 8px;
}

.area-suggestion {
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.priority-badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 600;
}

.priority-badge:is(.focus-card.priority-high *) {
  background: rgba(220, 53, 69, 0.1);
  color: var(--danger-color);
}

.priority-badge:is(.focus-card.priority-medium *) {
  background: rgba(255, 193, 7, 0.1);
  color: var(--warning-color);
}

.priority-badge:is(.focus-card.priority-low *) {
  background: rgba(23, 162, 184, 0.1);
  color: var(--info-color);
}

/* Challenge Score Section */
.challenge-score-section {
  background: linear-gradient(135deg, var(--neon-orange), var(--primary-orange));
  color: white;
  border-radius: 16px;
  padding: 24px;
  margin-top: 32px;
}

.challenge-score-section h3 {
  color: white;
  margin-bottom: 20px;
}

.challenge-score-details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.score-component {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.component-label {
  font-weight: 500;
}

.component-value {
  font-size: 24px;
  font-weight: 700;
}

.component-value.highlight {
  font-size: 32px;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.bonus-breakdown {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 16px;
}

.bonus-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.bonus-item i {
  width: 20px;
  text-align: center;
}

.bonus-value {
  margin-left: auto;
  font-weight: 700;
}

.ranking-info {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 16px;
  font-weight: 600;
}

.percentile {
  margin-left: auto;
  opacity: 0.9;
}

/* Form Leaderboard Modal */
.form-leaderboard-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.form-leaderboard-modal.closing {
  animation: fadeOut 0.3s ease-out;
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

.modal-content {
  background: var(--bg-primary);
  border-radius: 16px;
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-family: 'Poppins', sans-serif;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 8px;
  border-radius: 8px;
}

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

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* Leaderboard Controls */
.leaderboard-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.btn-refresh {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-refresh:hover:not(:disabled) {
  border-color: var(--neon-orange);
  color: var(--neon-orange);
}

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

.auto-refresh-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
}

.auto-refresh-indicator .fa-circle {
  font-size: 8px;
  color: var(--text-secondary);
}

.auto-refresh-indicator .fa-circle.active {
  color: var(--success-color);
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* User Summary */
.user-summary {
  background: linear-gradient(135deg, var(--neon-orange), var(--primary-orange));
  color: white;
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}

.user-summary h3 {
  color: white;
  margin-bottom: 16px;
}

.summary-content {
  display: flex;
  align-items: center;
  gap: 32px;
}

.rank-display {
  text-align: center;
}

.rank-number {
  display: block;
  font-size: 48px;
  font-weight: 800;
  font-family: 'Poppins', sans-serif;
}

.rank-suffix {
  display: block;
  font-size: 14px;
  opacity: 0.9;
}

.user-stats {
  display: flex;
  gap: 24px;
}

.user-stats .stat {
  text-align: center;
}

.user-stats .stat-value {
  color: white;
}

/* Leaderboard Header */
.leaderboard-header {
  display: grid;
  grid-template-columns: 60px 1fr 120px 150px 100px;
  gap: 16px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: 8px;
  margin-bottom: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 14px;
  text-transform: uppercase;
}

/* Leaderboard List */
.leaderboard-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.empty-leaderboard {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
  font-size: 16px;
}

/* Leaderboard Entry */
.leaderboard-entry {
  display: grid;
  grid-template-columns: 60px 1fr 120px 150px 100px;
  gap: 16px;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 8px;
  align-items: center;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

.leaderboard-entry:hover {
  transform: translateX(4px);
  border-color: var(--neon-orange);
  box-shadow: var(--shadow-md);
}

.leaderboard-entry.current-user {
  border-color: var(--neon-orange);
  background: linear-gradient(135deg, rgba(255, 69, 0, 0.1), var(--bg-secondary));
}

.leaderboard-entry.gold {
  border-color: #FFD700;
}

.leaderboard-entry.silver {
  border-color: #C0C0C0;
}

.leaderboard-entry.bronze {
  border-color: #CD7F32;
}

.entry-rank {
  display: flex;
  align-items: center;
  gap: 8px;
}

.fa-medal.gold {
  color: #FFD700;
  font-size: 20px;
}

.fa-medal.silver {
  color: #C0C0C0;
  font-size: 20px;
}

.fa-medal.bronze {
  color: #CD7F32;
  font-size: 20px;
}

.rank-number {
  font-weight: 700;
  color: var(--text-primary);
}

.entry-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-color);
}

.user-name {
  font-weight: 600;
  color: var(--text-primary);
}

.you-badge {
  padding: 2px 8px;
  background: var(--neon-orange);
  color: white;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.entry-score {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.entry-stats {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.entry-trend {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
}

.entry-trend .positive {
  color: var(--success-color);
  font-weight: 600;
}

.entry-trend .negative {
  color: var(--danger-color);
  font-weight: 600;
}

.entry-trend .neutral {
  color: var(--text-secondary);
}

/* Leaderboard Legend */
.leaderboard-legend {
  margin-top: 32px;
  padding: 20px;
  background: var(--bg-secondary);
  border-radius: 12px;
}

.leaderboard-legend h4 {
  margin-bottom: 16px;
  color: var(--text-primary);
}

.legend-items {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

/* Loading States */
.leaderboard-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-top-color: var(--neon-orange);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Error State */
.leaderboard-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
}

.leaderboard-error i {
  font-size: 48px;
  color: var(--danger-color);
  margin-bottom: 16px;
}

.btn-retry {
  margin-top: 16px;
  padding: 8px 24px;
  background: var(--neon-orange);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

/* Animations */
.form-leaderboard.updating .leaderboard-entry {
  animation: shimmer 0.5s ease-out;
}

@keyframes shimmer {
  0% { opacity: 0.7; }
  50% { opacity: 1; }
  100% { opacity: 0.7; }
}

/* Real-time Notifications */
.join-notification,
.leader-change-notification {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-primary);
  border: 2px solid var(--neon-orange);
  border-radius: 12px;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateX(400px);
  opacity: 0;
  transition: all 0.4s ease-out;
  z-index: 100;
  box-shadow: var(--shadow-md), 0 0 20px rgba(255, 69, 0, 0.3);
}

.join-notification.show,
.leader-change-notification.show {
  transform: translateX(0);
  opacity: 1;
}

.join-notification i {
  color: var(--neon-orange);
  font-size: 20px;
}

.leader-change-notification {
  background: linear-gradient(135deg, var(--neon-orange), var(--primary-orange));
  color: white;
  border: none;
}

.leader-change-notification i {
  color: #FFD700;
  font-size: 24px;
  filter: drop-shadow(0 0 5px rgba(255, 215, 0, 0.5));
}

/* WebSocket Status Indicator */
.auto-refresh-indicator .fa-circle.active {
  color: var(--success-color);
  animation: pulse 2s ease-in-out infinite;
  filter: drop-shadow(0 0 5px var(--success-color));
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .overall-score-container {
    flex-direction: column;
    text-align: center;
  }
  
  .challenge-meta {
    justify-content: center;
  }
  
  .form-challenge-footer {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .leaderboard-header,
  .leaderboard-entry {
    grid-template-columns: 50px 1fr 80px;
  }
  
  .header-stats,
  .header-trend,
  .entry-stats,
  .entry-trend {
    display: none;
  }
  
  .modal-content {
    width: 95%;
    max-height: 95vh;
  }
  
  .summary-content {
    flex-direction: column;
    text-align: center;
  }
  
  .user-stats {
    justify-content: center;
  }
}