/* ===================================
   PROFILE PAGE STYLES
   Comprehensive user profile page - ENHANCED
   =================================== */

/* Modern Color Palette */
:root {
  --profile-gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --profile-gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --profile-gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --profile-gradient-info: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  --profile-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --profile-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --profile-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
  --profile-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* Profile Hero Section */
.profile-hero {
  margin-bottom: 2rem;
  background: linear-gradient(135deg, #c7d2fe 0%, #ddd6fe 100%);
  color: #4338ca;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
  border: 2px solid rgba(139, 92, 246, 0.3);
  border-radius: 20px;
}

.profile-hero-content {
  padding: 3rem 2rem;
}

.achievements-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  color: #5b21b6;
  text-decoration: none;
  transition: all 0.2s ease;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
}

.achievements-back:hover {
  color: #4338ca;
  background: white;
  transform: translateX(-2px);
}

/* Profile Header */
.profile-header {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.profile-avatar-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.profile-avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid rgba(255, 255, 255, 0.95);
  box-shadow: 
    0 8px 24px rgba(0, 0, 0, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.profile-avatar:hover {
  transform: scale(1.05);
  box-shadow: 
    0 12px 32px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.2);
}

.profile-avatar-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.profile-info {
  flex: 1;
  min-width: 250px;
}

.profile-username-display {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.profile-username-display h1 {
  margin: 0;
  font-size: 2.25rem;
  font-weight: 800;
  color: #5b21b6;
  letter-spacing: -0.02em;
}

.profile-username-edit {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.profile-username-input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border, #d1d5db);
  border-radius: 6px;
  font-size: 1rem;
}

.profile-email {
  color: #5b21b6;
  margin: 0.5rem 0;
  font-size: 1.125rem;
  font-weight: 500;
}

.profile-member-since {
  color: #5b21b6;
  font-size: 0.9375rem;
  margin: 0.5rem 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 20px;
  box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
}

/* Profile Stats Section */
.profile-stats-section {
  margin-bottom: 2rem;
  padding: 2.5rem;
  background: linear-gradient(135deg, rgba(199, 210, 254, 0.3) 0%, rgba(221, 214, 254, 0.3) 100%);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
  border-radius: 20px;
  border: 2px solid rgba(139, 92, 246, 0.2);
  position: relative;
}

.profile-stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--profile-gradient-primary);
  border-radius: 16px 16px 0 0;
}

.profile-stats-section h2 {
  margin-top: 0;
  margin-bottom: 2rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: #5b21b6;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.profile-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  background: linear-gradient(135deg, #c7d2fe 0%, #ddd6fe 100%);
  border-radius: 20px;
  border: 2px solid rgba(139, 92, 246, 0.3);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  min-height: 140px;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.4) 0%, transparent 70%);
  opacity: 1;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.25);
  border-color: rgba(139, 92, 246, 0.5);
  background: linear-gradient(135deg, #b4c0ff 0%, #d4c5f9 100%);
}

.stat-card:hover::before {
  opacity: 0.5;
}

.stat-icon {
  font-size: 3rem;
  line-height: 1;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
  position: relative;
  z-index: 1;
  margin-bottom: 0.5rem;
}

.stat-content {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  flex: 1;
  position: relative;
  z-index: 1;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  color: #5b21b6;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: capitalize;
}

/* XP Progress Bar */
.profile-xp-progress {
  padding: 2rem;
  background: linear-gradient(135deg, #c7d2fe 0%, #ddd6fe 100%);
  border-radius: 20px;
  border: 2px solid rgba(139, 92, 246, 0.3);
  color: #4f46e5;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
  position: relative;
  overflow: hidden;
}

.profile-xp-progress::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.1); opacity: 0.5; }
}

.xp-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  position: relative;
  z-index: 1;
}

.xp-progress-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: #5b21b6;
}

.xp-progress-header span {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #5b21b6;
  background: rgba(255, 255, 255, 0.8);
  padding: 0.375rem 0.875rem;
  border-radius: 20px;
  box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
}

.progress-bar-container {
  width: 100%;
  height: 16px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: inset 0 1px 3px rgba(99, 102, 241, 0.2);
  position: relative;
  z-index: 1;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #4f46e5 0%, #7c3aed 50%, #a855f7 100%);
  border-radius: 8px;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.5);
  position: relative;
  overflow: hidden;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 100%
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Settings Section - ENHANCED */
.profile-settings-section {
  margin-bottom: 2rem;
  padding: 2.5rem;
  background: linear-gradient(135deg, rgba(199, 210, 254, 0.3) 0%, rgba(221, 214, 254, 0.3) 100%);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
  border-radius: 20px;
  border: 2px solid rgba(139, 92, 246, 0.2);
  position: relative;
}

.profile-settings-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--profile-gradient-success);
  border-radius: 16px 16px 0 0;
}

.profile-settings-section h2 {
  margin-top: 0;
  margin-bottom: 2rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: #5b21b6;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.settings-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Setting Item - Improved Layout */
.setting-item {
  padding: 2rem;
  background: linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
  border-radius: 16px;
  border: 2px solid #e5e7eb;
  transition: all 0.3s ease;
  position: relative;
}

.setting-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--profile-gradient-info);
  border-radius: 16px 16px 0 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.setting-item:hover::before {
  opacity: 1;
}

.setting-item:hover {
  border-color: rgba(59, 130, 246, 0.3);
  background: white;
  box-shadow: var(--profile-shadow-md);
}

/* Danger variant */
.setting-item-danger {
  border-color: rgba(239, 68, 68, 0.2);
}

.setting-item-danger::before {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.setting-item-danger:hover {
  border-color: rgba(239, 68, 68, 0.4);
  background: #fef2f2;
}

/* Setting Info Layout */
.setting-info {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  width: 100%;
}

.setting-icon {
  font-size: 2.5rem;
  line-height: 1;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
  border-radius: 16px;
  flex-shrink: 0;
}

.setting-item-danger .setting-icon {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(220, 38, 38, 0.1) 100%);
}

.setting-info > div {
  flex: 1;
}

.setting-info h3 {
  margin: 0 0 0.75rem 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: #111827;
  letter-spacing: -0.01em;
}

.setting-description {
  margin: 0 0 1.25rem 0;
  font-size: 0.9375rem;
  color: #6b7280;
  line-height: 1.6;
}

/* Setting Display (view mode) */
.setting-display {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.setting-value {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: #374151;
  padding: 0.5rem 1rem;
  background: #f3f4f6;
  border-radius: 8px;
  border: 2px solid #e5e7eb;
}

/* Setting Edit Form */
.setting-edit-form {
  margin-top: 1rem;
  padding: 1.5rem;
  background: #f9fafb;
  border-radius: 12px;
  border: 2px solid #e5e7eb;
}

.setting-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-family: inherit;
  transition: all 0.2s ease;
  margin-bottom: 0.75rem;
  background: white;
}

.setting-input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.setting-input:last-of-type {
  margin-bottom: 1rem;
}

.setting-edit-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Setting Help Text */
.setting-help {
  margin: 0.75rem 0 0 0;
  font-size: 0.8125rem;
  color: #9ca3af;
  font-style: italic;
}

.setting-help.warning {
  color: #dc2626;
  font-weight: 600;
  font-style: normal;
}

/* Setting Loading State */
.setting-loading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: #6b7280;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid #e5e7eb;
  border-top-color: #3b82f6;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Button Text Variant */
.btn-text {
  background: transparent;
  border: none;
  color: #3b82f6;
  padding: 0.375rem 0.75rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-text:hover {
  background: rgba(59, 130, 246, 0.1);
  transform: none;
  box-shadow: none;
}

/* Activity Section */
.profile-activity-section {
  margin-bottom: 2rem;
  padding: 2.5rem;
  background: linear-gradient(135deg, rgba(199, 210, 254, 0.3) 0%, rgba(221, 214, 254, 0.3) 100%);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
  border-radius: 20px;
  border: 2px solid rgba(139, 92, 246, 0.2);
  position: relative;
}

.profile-activity-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--profile-gradient-info);
  border-radius: 16px 16px 0 0;
}

.profile-activity-section h2 {
  margin-top: 0;
  margin-bottom: 2rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: #5b21b6;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.activity-subsection {
  margin-bottom: 3rem;
}

.activity-subsection:last-child {
  margin-bottom: 0;
}

.activity-subsection h3 {
  margin-top: 0;
  margin-bottom: 1.5rem;
  font-size: 1.375rem;
  font-weight: 700;
  color: #7c3aed;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid #e5e7eb;
}

/* Photos Grid */
.photos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.photo-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.08) 0%, rgba(168, 85, 247, 0.08) 100%);
  aspect-ratio: 1;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid rgba(139, 92, 246, 0.15);
}

.photo-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.3);
}

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

.photo-card:hover img {
  transform: scale(1.1);
}

.photo-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  padding: 1rem;
}

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

.photo-card-overlay .btn {
  background: white;
  color: #1f2937;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.photo-card-overlay .btn:hover {
  background: #f3f4f6;
  transform: translateY(-2px);
}

/* Comments List */
.comments-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.comment-card {
  padding: 1.75rem;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.06) 0%, rgba(168, 85, 247, 0.06) 100%);
  border-radius: 16px;
  border: 2px solid rgba(139, 92, 246, 0.15);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.comment-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #8b5cf6 0%, #a78bfa 100%);
  border-radius: 16px 16px 0 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.comment-card:hover {
  transform: translateX(4px);
  border-color: rgba(139, 92, 246, 0.3);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.15);
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
}

.comment-card:hover::before {
  opacity: 1;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: 1rem;
}

.comment-poi-id {
  font-weight: 700;
  color: #8b5cf6;
  font-size: 0.9375rem;
}

.comment-date {
  font-size: 0.875rem;
  color: #a78bfa;
  font-weight: 500;
}

.comment-content {
  margin: 1rem 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: #4b5563;
}

.comment-footer {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #f3f4f6;
  font-size: 0.875rem;
  color: #6b7280;
}

.comment-likes {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  background: rgba(244, 114, 182, 0.1);
  color: #ec4899;
  border-radius: 12px;
}

.comment-edited {
  font-style: italic;
  color: #a78bfa;
  font-size: 0.8125rem;
  font-weight: 500;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: #a78bfa;
  font-style: italic;
  font-size: 1rem;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
  border-radius: 16px;
  border: 2px dashed rgba(139, 92, 246, 0.2);
}

/* Loading States */
#profile-header-loading,
#avatar-upload-loading,
#username-edit-loading,
#user-activity-loading {
  text-align: center;
  padding: 2rem;
  color: var(--color-text-secondary, #666);
}

/* Universal spinner animation */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  min-height: 200px;
}

.loading-spinner .spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid #e5e7eb;
  border-top-color: #3b82f6;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-spinner p {
  margin-top: 1rem;
  color: #6b7280;
  font-size: 0.9375rem;
}

/* Skeleton Loaders */
@keyframes skeleton-loading {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    #f0f0f0 0%,
    #e0e0e0 20%,
    #f0f0f0 40%,
    #f0f0f0 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: 8px;
}

.skeleton-avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
}

.skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
}

.skeleton-text-large {
  height: 2rem;
  margin-bottom: 0.75rem;
}

.skeleton-card {
  height: 140px;
  width: 100%;
}

.skeleton-stat {
  padding: 1.5rem 1rem;
  min-height: 140px;
}

.skeleton-photo {
  aspect-ratio: 1;
  width: 100%;
}

/* Skeleton grid layouts */
.skeleton-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.skeleton-photos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .skeleton-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .skeleton-photos-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 374px) {
  .skeleton-avatar {
    width: 100px;
    height: 100px;
  }
  
  .skeleton-stats-grid {
    grid-template-columns: 1fr;
  }
}

/* Focus Styles for Accessibility */
button:focus-visible,
input:focus-visible,
a:focus-visible,
.header-tab:focus-visible,
.mobile-tabbar-btn:focus-visible {
  outline: 3px solid #3b82f6;
  outline-offset: 2px;
  border-radius: 4px;
}

.btn:focus-visible,
.btn-sm:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-ghost:focus-visible {
  outline: 3px solid #3b82f6;
  outline-offset: 3px;
}

.setting-input:focus-visible,
.profile-username-input:focus-visible {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

/* Skip focus outline on mouse click, but show on keyboard */
button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
  outline: none;
}

/* Button Sizes and Styles */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: rgba(102, 126, 234, 1);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: white;
  border-color: rgba(102, 126, 234, 0.5);
  color: #667eea;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.btn-secondary {
  background: white;
  border: 2px solid #e5e7eb;
  color: #1f2937;
  font-weight: 600;
}

.btn-secondary:hover {
  background: #f9fafb;
  border-color: rgba(102, 126, 234, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-primary {
  background: var(--profile-gradient-primary);
  border: none;
  color: white;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  border: none;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(220, 38, 38, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
  .profile-hero-content {
    padding: 2rem 1.5rem;
  }

  .profile-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .profile-avatar {
    width: 140px;
    height: 140px;
  }

  .profile-username-display {
    justify-content: center;
    flex-direction: column;
  }

  .profile-username-display h1 {
    font-size: 2rem;
  }

  .profile-stats-section,
  .profile-settings-section,
  .profile-activity-section {
    padding: 2rem 1.5rem;
  }

  .profile-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .stat-card {
    padding: 1.25rem 1rem;
    min-height: 130px;
  }

  .stat-icon {
    width: 56px;
    height: 56px;
    font-size: 2.25rem;
  }
  
  .stat-value {
    font-size: 2rem;
  }
  
  .stat-label {
    font-size: 0.8125rem;
  }

  .setting-item {
    padding: 1.5rem;
  }
  
  .setting-info {
    flex-direction: column;
    gap: 1rem;
  }
  
  .setting-icon {
    width: 56px;
    height: 56px;
    font-size: 2rem;
  }

  .photos-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
  }

  .activity-subsection h3 {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .profile-hero-content {
    padding: 1.5rem 1rem;
  }

  .profile-avatar {
    width: 120px;
    height: 120px;
  }

  .profile-username-display h1 {
    font-size: 1.75rem;
  }

  .profile-email {
    font-size: 1rem;
  }

  .profile-stats-section,
  .profile-settings-section,
  .profile-activity-section {
    padding: 1.5rem 1rem;
  }

  .profile-stats-section h2,
  .profile-settings-section h2,
  .profile-activity-section h2 {
    font-size: 1.5rem;
  }

  .profile-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  .stat-card {
    padding: 1rem 0.75rem;
    min-height: 120px;
  }
  
  .stat-icon {
    width: 48px;
    height: 48px;
    font-size: 2rem;
    margin-bottom: 0.375rem;
  }
  
  .stat-value {
    font-size: 1.75rem;
  }
  
  .stat-label {
    font-size: 0.75rem;
  }

  .photos-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  .comment-card {
    padding: 1.25rem;
  }

  .profile-xp-progress {
    padding: 1.5rem;
  }
  
  .setting-item {
    padding: 1.25rem;
  }
  
  .setting-icon {
    width: 48px;
    height: 48px;
    font-size: 2rem;
  }
  
  .setting-info h3 {
    font-size: 1.125rem;
  }
  
  .setting-edit-form {
    padding: 1.25rem;
  }
  
  /* Fix buttons on mobile */
  .btn-sm {
    font-size: 0.8125rem;
    padding: 0.375rem 0.625rem;
  }
  
  .profile-avatar-actions {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .setting-input {
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  .profile-username-input {
    font-size: 16px; /* Prevents zoom on iOS */
  }
}

/* Extra small mobile devices (< 375px) */
@media (max-width: 374px) {
  .profile-hero-content {
    padding: 1.25rem 0.75rem;
  }
  
  .profile-avatar {
    width: 100px;
    height: 100px;
    border-width: 3px;
  }
  
  .profile-username-display h1 {
    font-size: 1.5rem;
  }
  
  .profile-email {
    font-size: 0.875rem;
  }
  
  .profile-member-since {
    font-size: 0.8125rem;
    padding: 0.25rem 0.75rem;
  }
  
  .profile-stats-section,
  .profile-settings-section,
  .profile-activity-section {
    padding: 1.25rem 0.75rem;
    margin-bottom: 1.5rem;
  }
  
  .profile-stats-section h2,
  .profile-settings-section h2,
  .profile-activity-section h2 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
  }
  
  .profile-stats-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .stat-card {
    padding: 0.875rem 0.75rem;
    min-height: 100px;
    flex-direction: row;
    justify-content: flex-start;
    text-align: left;
    gap: 1rem;
  }
  
  .stat-icon {
    width: 56px;
    height: 56px;
    font-size: 2rem;
    margin-bottom: 0;
    flex-shrink: 0;
  }
  
  .stat-content {
    align-items: flex-start;
    text-align: left;
  }
  
  .stat-value {
    font-size: 2rem;
  }
  
  .stat-label {
    font-size: 0.8125rem;
  }
  
  .profile-xp-progress {
    padding: 1.25rem;
  }
  
  .xp-progress-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .xp-progress-header h3 {
    font-size: 1rem;
  }
  
  .xp-progress-header span {
    font-size: 0.8125rem;
  }
  
  .progress-bar-container {
    height: 12px;
  }
  
  .setting-item {
    padding: 1rem;
  }
  
  .setting-icon {
    width: 40px;
    height: 40px;
    font-size: 1.75rem;
  }
  
  .setting-info h3 {
    font-size: 1rem;
  }
  
  .setting-description {
    font-size: 0.875rem;
  }
  
  .setting-edit-form {
    padding: 1rem;
  }
  
  .activity-subsection h3 {
    font-size: 1.125rem;
  }
  
  .photos-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
  
  .comment-card {
    padding: 1rem;
  }
  
  .comment-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
  
  .comment-content {
    font-size: 0.875rem;
  }
  
  .comment-footer {
    font-size: 0.8125rem;
    gap: 0.75rem;
  }
  
  .achievements-back {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
  }
  
  .btn-sm {
    font-size: 0.75rem;
    padding: 0.3rem 0.5rem;
  }
  
  .profile-avatar-actions {
    gap: 0.5rem;
  }
}

/* Dark mode support (if implemented) */
@media (prefers-color-scheme: dark) {
  .profile-avatar {
    border-color: #374151;
  }

  .stat-card,
  .setting-item,
  .comment-card {
    background: #1f2937;
    border-color: #374151;
  }

  .profile-username-display h1,
  .comment-content {
    color: #f9fafb;
  }

  .setting-info h3 {
    color: #f9fafb;
  }
}