/**
 * User Profile CSS (Unified)
 *
 * Merged from user-profile.css and user-profile-polished.css.
 * Styles for user profile pages with:
 * - Profile header with reputation and level badges
 * - Activity feed styling
 * - Contribution cards and tabs
 * - Badge display
 * - Settings forms
 * - Responsive design
 */

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */

.user-profile,
.user-profile-page {
    --profile-bg: rgba(17, 24, 39, 0.5);
    --profile-card-bg: rgba(31, 41, 55, 0.6);
    --profile-border: rgba(255, 255, 255, 0.08);
    --profile-text: #e5e7eb;
    --profile-text-muted: #9ca3af;
    --profile-accent: #8b7fff;
    --profile-accent-light: rgba(139, 127, 255, 0.1);

    /* Level tier colors */
    --tier-bronze: #cd7f32;
    --tier-bronze-bg: rgba(205, 127, 50, 0.2);
    --tier-silver: #c0c0c0;
    --tier-silver-bg: rgba(192, 192, 192, 0.12);
    --tier-gold: #ffd700;
    --tier-gold-bg: rgba(255, 215, 0, 0.12);
    --tier-platinum: #e5e4e2;
    --tier-platinum-bg: rgba(229, 228, 226, 0.15);

    /* Status colors */
    --status-success: #22c55e;
    --status-warning: #fbbf24;
    --status-error: #ef4444;
    --status-info: #3b82f6;
}

/* ==========================================================================
   Base Layout
   ========================================================================== */

.user-profile-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.user-profile {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.user-profile--loading,
.user-profile--error {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

/* Loading State */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--profile-text-muted);
}

.loading-spinner .spinner {
    width: 48px;
    height: 48px;
    animation: rotate 1s linear infinite;
}

.loading-spinner .spinner circle {
    stroke-dasharray: 80;
    stroke-dashoffset: 60;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

@keyframes rotate {
    100% { transform: rotate(360deg); }
}

@keyframes dash {
    0%, 100% { stroke-dashoffset: 60; }
    50% { stroke-dashoffset: 20; }
}

/* Error State */
.error-message {
    text-align: center;
    padding: 3rem;
}

.error-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.error-message h2 {
    color: var(--profile-text);
    margin: 0 0 0.5rem;
}

.error-message p {
    color: var(--profile-text-muted);
    margin: 0 0 1.5rem;
}

/* ==========================================================================
   Profile Header (legacy .profile-header selectors)
   ========================================================================== */

.profile-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 2rem;
    padding: 2rem;
    background: var(--color-surface, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 16px;
    margin-bottom: 2rem;
}

.profile-avatar-section {
    position: relative;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--color-primary, #6366f1);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
    object-fit: cover;
}

.profile-avatar-placeholder {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    border: 4px solid var(--color-primary);
}

.reputation-level-badge {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.85rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    white-space: nowrap;
}

.reputation-level-badge .level-icon {
    font-size: 1rem;
}

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

.profile-name {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary, #fff);
    margin: 0 0 0.5rem;
}

.profile-bio {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: 0.75rem;
    max-width: 500px;
}

.profile-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
}

.profile-meta-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.profile-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.profile-header-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-self: flex-start;
}

.btn-edit-profile,
.btn-block-user,
.btn-follow-user {
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-edit-profile {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-text-primary);
}

.btn-edit-profile:hover {
    background: rgba(255, 255, 255, 0.05);
}

.btn-follow-user {
    background: var(--color-primary, #6366f1);
    border: none;
    color: white;
}

.btn-follow-user:hover {
    opacity: 0.9;
}

.btn-block-user {
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.btn-block-user:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* ==========================================================================
   Profile Header (polished .user-profile__header selectors)
   ========================================================================== */

.user-profile__header {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    background: var(--profile-card-bg);
    border: 1px solid var(--profile-border);
    border-radius: 20px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.user-profile__avatar-section {
    flex-shrink: 0;
}

.user-profile__avatar {
    position: relative;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--profile-accent);
    box-shadow: 0 4px 20px rgba(139, 127, 255, 0.3);
}

.user-profile__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-initial {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--profile-accent), #a78bff);
}

.verified-badge,
.mod-badge {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.verified-badge {
    background: var(--status-success);
    color: white;
}

.mod-badge {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

/* User Info */
.user-profile__info {
    flex: 1;
}

.user-profile__name {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--profile-text);
    margin: 0 0 0.5rem;
}

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

.level-name {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
}

.level-name.tier-bronze {
    background: var(--tier-bronze-bg);
    color: var(--tier-bronze);
}

.level-name.tier-silver {
    background: var(--tier-silver-bg);
    color: var(--tier-silver);
}

.level-name.tier-gold {
    background: var(--tier-gold-bg);
    color: var(--tier-gold);
}

.level-name.tier-platinum {
    background: var(--tier-platinum-bg);
    color: var(--tier-platinum);
}

.level-points {
    font-size: 0.875rem;
    color: var(--profile-text-muted);
}

.user-profile__bio {
    font-size: 0.9375rem;
    color: var(--profile-text);
    line-height: 1.6;
    margin: 0 0 1rem;
}

.user-profile__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    color: var(--profile-text-muted);
    font-size: 0.875rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.user-profile__actions {
    margin-top: 1rem;
    display: flex;
    gap: 0.5rem;
}

/* ==========================================================================
   Reputation Section
   ========================================================================== */

.reputation-section {
    padding: 1.5rem 2rem;
    background: var(--color-surface, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 16px;
    margin-bottom: 2rem;
}

.reputation-section .section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 1.5rem;
}

.reputation-display {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.reputation-score-display {
    text-align: center;
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
}

.reputation-score-display .score-value {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.reputation-score-display .score-label {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.reputation-progress {
    flex: 1;
}

.reputation-progress .progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
}

.reputation-progress .current-level {
    color: var(--color-text-primary);
    font-weight: 500;
}

.reputation-progress .next-level {
    color: var(--color-text-tertiary);
}

.reputation-progress .progress-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.reputation-progress .progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.reputation-progress .progress-label {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    margin-top: 0.35rem;
}

.reputation-breakdown {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.breakdown-item {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
}

.breakdown-item .item-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.breakdown-item .item-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.breakdown-item .item-label {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   Stats Section (legacy)
   ========================================================================== */

.stats-section {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    padding: 1.5rem;
    background: var(--color-surface, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 12px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 0.25rem;
}

/* ==========================================================================
   Stats Section (polished)
   ========================================================================== */

.user-profile__stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.user-profile__stats .stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.25rem 1rem;
    background: var(--profile-card-bg);
    border: 1px solid var(--profile-border);
    border-radius: 14px;
    text-align: center;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.user-profile__stats .stat-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.15);
}

.user-profile__stats .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--profile-text);
    line-height: 1;
    margin-bottom: 0.375rem;
}

.user-profile__stats .stat-label {
    font-size: 0.75rem;
    color: var(--profile-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   Badges Section (legacy)
   ========================================================================== */

.badges-section {
    padding: 1.5rem 2rem;
    background: var(--color-surface, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 16px;
    margin-bottom: 2rem;
}

/* ==========================================================================
   Badges Section (polished)
   ========================================================================== */

.user-profile__badges {
    background: var(--profile-card-bg);
    border: 1px solid var(--profile-border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--profile-text);
    margin: 0 0 1.25rem;
}

#profile-badges-container {
    min-height: 60px;
}

/* Badge Grid (polished version) */
.badges-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    border-radius: 10px;
    font-size: 0.8125rem;
    font-weight: 500;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.badge-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.badge-item.tier-bronze {
    background: var(--tier-bronze-bg);
    color: var(--tier-bronze);
    border: 1px solid rgba(205, 127, 50, 0.3);
}

.badge-item.tier-silver {
    background: var(--tier-silver-bg);
    color: var(--tier-silver);
    border: 1px solid rgba(192, 192, 192, 0.3);
}

.badge-item.tier-gold {
    background: var(--tier-gold-bg);
    color: var(--tier-gold);
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.badge-item.tier-platinum {
    background: var(--tier-platinum-bg);
    color: var(--tier-platinum);
    border: 1px solid rgba(229, 228, 226, 0.3);
}

.badge-item__icon {
    width: 20px;
    height: 20px;
}

.badge-item__icon svg {
    width: 100%;
    height: 100%;
}

/* Badge Cards (legacy) */
.badge-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    transition: all 0.2s ease;
}

.badge-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.badge-card.pinned {
    border-color: var(--color-primary, #6366f1);
    background: rgba(99, 102, 241, 0.05);
}

.badge-icon-wrapper {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-size: 1.25rem;
}

.badge-icon-wrapper.bronze { background: rgba(205, 127, 50, 0.2); }
.badge-icon-wrapper.silver { background: rgba(192, 192, 192, 0.2); }
.badge-icon-wrapper.gold { background: rgba(255, 215, 0, 0.2); }
.badge-icon-wrapper.platinum { background: rgba(229, 228, 226, 0.2); }
.badge-icon-wrapper.legendary { background: rgba(155, 89, 182, 0.2); }

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

.badge-name {
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.badge-description {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    margin-top: 0.15rem;
}

.badge-pin-btn {
    padding: 0.35rem;
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.badge-card:hover .badge-pin-btn {
    opacity: 1;
}

.badge-card.pinned .badge-pin-btn {
    opacity: 1;
    color: var(--color-primary);
}

/* ==========================================================================
   Contribution Tabs (legacy)
   ========================================================================== */

.contribution-tabs {
    margin-bottom: 2rem;
}

.contribution-tabs .tabs-nav {
    display: flex;
    gap: 0.25rem;
    padding: 0.25rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    margin-bottom: 1.5rem;
}

.contribution-tabs .tab-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.contribution-tabs .tab-btn:hover {
    color: var(--color-text-primary);
}

.contribution-tabs .tab-btn.active {
    background: var(--color-primary, #6366f1);
    color: white;
}

.contribution-tabs .tab-btn .tab-count {
    margin-left: 0.35rem;
    padding: 0.1rem 0.4rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    font-size: 0.75rem;
}

.contribution-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.contribution-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--color-surface, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 12px;
    transition: border-color 0.2s ease;
}

.contribution-item:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.contribution-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    font-size: 1.25rem;
}

.contribution-info {
    flex: 1;
}

.contribution-title {
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.contribution-meta {
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
}

.contribution-votes {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.contribution-votes.positive { color: #22c55e; }
.contribution-votes.negative { color: #ef4444; }

/* ==========================================================================
   Activity Tabs Section (polished)
   ========================================================================== */

.user-profile__activity {
    background: var(--profile-card-bg);
    border: 1px solid var(--profile-border);
    border-radius: 16px;
    overflow: hidden;
}

.activity-tabs {
    display: flex;
    gap: 0.25rem;
    padding: 0.375rem;
    background: rgba(0, 0, 0, 0.2);
}

.activity-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--profile-text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.activity-tab:hover {
    color: var(--profile-text);
    background: rgba(255, 255, 255, 0.05);
}

.activity-tab.active {
    color: white;
    background: var(--profile-accent);
}

.tab-count {
    font-size: 0.6875rem;
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
}

.activity-tab.active .tab-count {
    background: rgba(255, 255, 255, 0.2);
}

/* Activity Content */
.activity-content {
    padding: 1.5rem;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    transition: background-color 0.2s ease;
}

.activity-item:hover {
    background: rgba(255, 255, 255, 0.04);
}

.activity-item__icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--profile-accent-light);
    color: var(--profile-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.activity-item__icon svg {
    width: 20px;
    height: 20px;
}

.activity-item__content {
    flex: 1;
    min-width: 0;
}

.activity-item__title {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--profile-text);
    margin: 0 0 0.25rem;
}

.activity-item__excerpt {
    font-size: 0.8125rem;
    color: var(--profile-text-muted);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.activity-item__meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--profile-text-muted);
}

.activity-item__time {
    font-size: 0.75rem;
    color: var(--profile-text-muted);
    flex-shrink: 0;
}

/* ==========================================================================
   Activity Heatmap (legacy)
   ========================================================================== */

.activity-heatmap {
    padding: 1.5rem;
    background: var(--color-surface, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 16px;
}

.heatmap-grid {
    display: grid;
    grid-template-columns: repeat(52, 1fr);
    gap: 3px;
}

.heatmap-cell {
    aspect-ratio: 1;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.05);
}

.heatmap-cell.level-1 { background: rgba(99, 102, 241, 0.2); }
.heatmap-cell.level-2 { background: rgba(99, 102, 241, 0.4); }
.heatmap-cell.level-3 { background: rgba(99, 102, 241, 0.6); }
.heatmap-cell.level-4 { background: rgba(99, 102, 241, 0.8); }

/* ==========================================================================
   Empty State
   ========================================================================== */

.empty-activity {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--profile-text-muted);
}

.empty-activity svg {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-activity h3 {
    font-size: 1rem;
    color: var(--profile-text);
    margin: 0 0 0.5rem;
}

.empty-activity p {
    font-size: 0.875rem;
    margin: 0;
}

/* ==========================================================================
   Load More
   ========================================================================== */

.load-more {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
}

.load-more-btn {
    padding: 0.625rem 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--profile-border);
    border-radius: 8px;
    color: var(--profile-text-muted);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.load-more-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--profile-text);
}

/* ==========================================================================
   Entity Cards in Activity
   ========================================================================== */

.entity-activity-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--profile-border);
    border-radius: 12px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

.entity-activity-card:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateX(4px);
}

.entity-activity-card__icon {
    font-size: 1.75rem;
    flex-shrink: 0;
}

.entity-activity-card__content {
    flex: 1;
    min-width: 0;
}

.entity-activity-card__name {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--profile-text);
    margin: 0 0 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.entity-activity-card__meta {
    font-size: 0.75rem;
    color: var(--profile-text-muted);
    text-transform: capitalize;
}

.entity-activity-card__status {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.entity-activity-card__status--pending {
    background: rgba(251, 191, 36, 0.15);
    color: var(--status-warning);
}

.entity-activity-card__status--approved {
    background: rgba(34, 197, 94, 0.15);
    color: var(--status-success);
}

.entity-activity-card__status--rejected {
    background: rgba(239, 68, 68, 0.15);
    color: var(--status-error);
}

/* ==========================================================================
   Note Cards in Activity
   ========================================================================== */

.note-activity-card {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    transition: background-color 0.2s ease;
}

.note-activity-card:hover {
    background: rgba(255, 255, 255, 0.04);
}

.note-activity-card__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.note-activity-card__entity-link {
    color: var(--profile-accent);
    text-decoration: none;
    font-weight: 500;
}

.note-activity-card__entity-link:hover {
    text-decoration: underline;
}

.note-activity-card__time {
    font-size: 0.75rem;
    color: var(--profile-text-muted);
    margin-left: auto;
}

.note-activity-card__content {
    font-size: 0.875rem;
    color: var(--profile-text);
    line-height: 1.6;
}

.note-activity-card__actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.note-activity-card__action {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--profile-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s ease;
}

.note-activity-card__action:hover {
    color: var(--profile-accent);
}

/* ==========================================================================
   Perspective Cards in Activity
   ========================================================================== */

.perspective-activity-card {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--profile-accent);
    border-radius: 0 12px 12px 0;
}

.perspective-activity-card__theme {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--profile-accent);
    margin-bottom: 0.5rem;
}

.perspective-activity-card__content {
    font-size: 0.875rem;
    color: var(--profile-text);
    line-height: 1.6;
    font-style: italic;
}

.perspective-activity-card__meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--profile-text-muted);
}

/* ==========================================================================
   Buttons (polished)
   ========================================================================== */

.user-profile .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.user-profile .btn-primary {
    background: var(--profile-accent);
    border: none;
    color: white;
}

.user-profile .btn-primary:hover {
    background: #7a6bea;
}

.user-profile .btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--profile-border);
    color: var(--profile-text);
}

.user-profile .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.user-profile .btn-block-user {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--status-error);
}

.user-profile .btn-block-user:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--status-error);
}

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

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

@media (max-width: 768px) {
    .user-profile-page {
        padding: 1rem;
    }

    .user-profile {
        padding: 1rem;
    }

    /* Legacy profile header responsive */
    .profile-header {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1.5rem;
    }

    .profile-avatar-section {
        display: flex;
        justify-content: center;
    }

    .profile-info {
        align-items: center;
    }

    .profile-meta {
        flex-wrap: wrap;
        justify-content: center;
    }

    .profile-badges {
        justify-content: center;
    }

    .profile-header-actions {
        flex-direction: row;
        width: 100%;
    }

    .profile-header-actions button {
        flex: 1;
    }

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

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

    .contribution-tabs .tabs-nav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .contribution-tabs .tab-btn {
        white-space: nowrap;
        flex: 0 0 auto;
    }

    /* Polished profile header responsive */
    .user-profile__header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 1.5rem;
    }

    .user-profile__info {
        width: 100%;
    }

    .user-profile__level {
        justify-content: center;
    }

    .user-profile__meta {
        justify-content: center;
    }

    .user-profile__actions {
        justify-content: center;
    }

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

    .activity-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .activity-tab {
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .profile-avatar {
        width: 100px;
        height: 100px;
    }

    .profile-avatar-placeholder {
        width: 100px;
        height: 100px;
        font-size: 2.5rem;
    }

    .profile-name {
        font-size: 1.5rem;
    }

    .badges-grid {
        flex-direction: column;
    }

    .user-profile__stats {
        grid-template-columns: 1fr;
    }

    .activity-content {
        padding: 1rem;
    }
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.user-profile .btn:focus-visible,
.activity-tab:focus-visible {
    outline: 2px solid var(--profile-accent);
    outline-offset: 2px;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .user-profile {
        background: white;
        color: black;
    }

    .user-profile__actions,
    .activity-tabs,
    .btn {
        display: none;
    }
}