/* DatingClaw - Modernized Stylesheet */

/* ==================== CSS Variables ==================== */
:root {
    /* Primary Colors */
    --primary-color: #667eea;
    --primary-hover: #5568d3;
    --primary-light: rgba(102, 126, 234, 0.1);
    --primary-dark: #5a67d8;
    
    /* Secondary Colors */
    --success-color: #10b981;
    --success-light: rgba(16, 185, 129, 0.1);
    --error-color: #ef4444;
    --error-light: rgba(239, 68, 68, 0.1);
    --warning-color: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.1);
    
    /* Neutral Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --bg-primary: #f9fafb;
    --bg-white: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-hover: #e5e7eb;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Font */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
}

/* ==================== Base Styles ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ==================== Header ==================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo {
    font-size: 36px;
    line-height: 1;
}

.brand h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* User Display */
.user-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.user-display:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
}

.user-avatar-mini {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--primary-color);
}

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

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

.user-mbti {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

/* Messages */
.message {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: none;
    animation: slideIn var(--transition-normal);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.error {
    background: var(--error-light);
    color: #991b1b;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.message.info {
    background: var(--primary-light);
    color: #1e40af;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

/* ==================== Auth Section ==================== */
.auth-section {
    max-width: 480px;
    margin: var(--spacing-2xl) auto;
}

.auth-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.auth-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    background: var(--bg-secondary);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-md);
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.auth-tab.active {
    background: var(--bg-white);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.auth-tab:hover:not(.active) {
    color: var(--text-primary);
}

.auth-form {
    animation: fadeIn var(--transition-normal);
}

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

/* ==================== Forms ==================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group input::placeholder {
    color: var(--text-tertiary);
}

/* Avatar Selector */
.avatar-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.avatar-preview {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--border-color);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.avatar-preview:hover {
    border-color: var(--primary-color);
}

.avatar-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-options {
    display: flex;
    gap: var(--spacing-sm);
    flex: 1;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
}

.btn-success:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ==================== Navigation Tabs ==================== */
.tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xl);
    background: var(--bg-white);
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-btn {
    flex: 1;
    min-width: fit-content;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.tab-btn i {
    font-size: 16px;
}

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

.btn-logout:hover {
    background: #dc2626;
}

/* ==================== Tab Content ==================== */
.tab-content {
    display: block;
    animation: fadeIn var(--transition-normal);
}

.tab-header {
    margin-bottom: var(--spacing-xl);
}

.tab-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.tab-header p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* History Subtabs */
.history-subtabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.subtab-btn {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.subtab-btn:hover {
    background: var(--bg-hover);
}

.subtab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-color: var(--primary-color);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

.history-content {
    display: block;
}

.history-content.hidden {
    display: none;
}

/* ==================== Filter Panel ==================== */
.filter-panel {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.filter-panel h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.filter-panel h3 i {
    color: var(--primary-color);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-group label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.filter-group label i {
    color: var(--primary-color);
}

.filter-group select,
.filter-group input[type="text"],
.filter-group input[type="number"] {
    padding: 10px var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    background: var(--bg-white);
    transition: all var(--transition-fast);
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.age-range {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.age-range input {
    flex: 1;
    min-width: 0;
}

.age-range span {
    color: var(--text-tertiary);
    font-weight: 500;
}

.filter-actions {
    grid-column: 1 / -1;
    display: flex;
    justify-content: flex-end;
}

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

/* ==================== Cards ==================== */
.user-list,
.conversation-list,
.result-list,
.post-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.user-card,
.conversation-card,
.result-card,
.friend-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-normal);
}

.user-card:hover,
.conversation-card:hover,
.result-card:hover,
.friend-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--primary-light);
}

/* ==================== User Avatar ==================== */
.user-avatar {
    position: relative;
    flex-shrink: 0;
    cursor: pointer;
}

.user-avatar img {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
}

.user-avatar:hover img {
    border-color: var(--primary-color);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.avatar-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
    border-radius: 50%;
}

.user-avatar:hover .avatar-overlay {
    opacity: 1;
}

.avatar-overlay i {
    color: white;
    font-size: 18px;
}

/* ==================== User Info ==================== */
.user-info {
    flex: 1;
    min-width: 0;
}

.username {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.mbti-type {
    display: inline-block;
    padding: 2px 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.compatibility {
    font-size: var(--font-size-xs);
    color: var(--success-color);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.bio {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ==================== Badges ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.badge-active {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.badge-success {
    background: var(--success-light);
    color: #065f46;
}

.badge-neutral {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

/* Post Badges */
.post-badge-conversation {
    background: #e3f2fd;
    color: #1976d2;
}

.post-badge-experience {
    background: #f3e5f5;
    color: #7b1fa2;
}

.post-badge-question {
    background: #fff3e0;
    color: #f57c00;
}

.post-badge-activity {
    background: #e8f5e9;
    color: #388e3c;
}

.post-badge-offer {
    background: #fce4ec;
    color: #c2185b;
}

.post-badge-general {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

/* ==================== Post Items ==================== */
.post-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.post-item:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-light);
    transform: translateX(4px);
}

.post-item-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 700;
    flex-shrink: 0;
}

.post-item-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.post-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.post-item-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.post-item-username {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.post-item-mbti {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--primary-light);
    color: var(--primary-color);
}

.post-item-time {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.post-item-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.post-item-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
}

.post-item-stats {
    display: flex;
    gap: var(--spacing-md);
}

.post-item-stat {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.post-item-stat i {
    color: var(--primary-color);
    font-size: 11px;
}

.post-item-badge {
    font-size: 10px;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    font-weight: 600;
}

.post-empty {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-tertiary);
}

.post-empty i {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    display: block;
    color: var(--border-color);
}

.post-empty p {
    font-size: var(--font-size-sm);
    margin: var(--spacing-xs) 0;
}

/* ==================== Conversation/Result Cards ==================== */
.conversation-header,
.result-header {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.conversation-header span,
.result-header span {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.conversation-info,
.result-info {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ==================== Modal ==================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn var(--transition-fast);
}

.modal-content {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
}

.modal-large {
    max-width: 700px;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-sm);
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-tertiary);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

/* ==================== User Profile Modal ==================== */
.user-profile-content {
    padding: 0;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.profile-avatar-large {
    flex-shrink: 0;
}

.profile-avatar-large img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--primary-color);
    background: var(--bg-secondary);
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.profile-mbti {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.profile-bio {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: var(--spacing-sm);
}

.profile-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-lg);
}

.detail-section {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.detail-section h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.detail-section h3 i {
    color: var(--primary-color);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.detail-item .item-label {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-item .item-value {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 600;
}

/* Contact Section */
.contact-section {
    background: var(--success-light);
}

.contact-section h3 i {
    color: var(--success-color);
}

.profile-contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-white);
    border-radius: var(--radius-md);
}

.contact-item i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.contact-item .label {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    font-weight: 500;
    min-width: 60px;
}

.contact-item .value {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 500;
}

.locked-info {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--warning-light);
    border-radius: var(--radius-md);
}

.locked-info i {
    font-size: 36px;
    color: var(--warning-color);
    margin-bottom: var(--spacing-sm);
}

.locked-info p {
    font-size: var(--font-size-sm);
    color: #92400e;
    font-weight: 500;
}

.profile-actions {
    display: flex;
    justify-content: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.profile-actions .btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-sm);
    min-width: 140px;
}

/* ==================== Invite Link ==================== */
.invite-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, #f0abfc 0%, #fdba74 100%);
    color: #333;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.invite-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(240, 171, 252, 0.4);
}

/* ==================== Quota Display ==================== */
.quota-display-mini {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.quota-display-mini i {
    color: var(--primary-color);
}

.quota-display-mini span {
    font-weight: 600;
}

/* ==================== Loading & Empty States ==================== */
.loading,
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    gap: var(--spacing-md);
    color: var(--text-tertiary);
}

.loading i,
.loading-state i {
    font-size: 32px;
    color: var(--primary-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    gap: var(--spacing-md);
    color: var(--text-tertiary);
}

.error-state i {
    font-size: 48px;
    color: var(--error-color);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

/* ==================== Test Info ==================== */
.test-info {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--warning-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: #92400e;
}

.test-info p {
    margin: var(--spacing-xs) 0;
}

/* ==================== Progress Bar ==================== */
.progress-container {
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color));
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
}

.progress-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
}

/* ==================== Conversation Messages ==================== */
.conversation-messages {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.message {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.message.agent_initiator {
    background: var(--primary-light);
    margin-right: 15%;
}

.message.agent_target {
    background: var(--success-light);
    margin-left: 15%;
}

.message-role {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-xs);
}

.message-content {
    color: var(--text-primary);
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .header-right {
        width: 100%;
        justify-content: center;
    }
    
    .tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .tabs::-webkit-scrollbar {
        display: none;
    }
    
    .tab-btn {
        flex: 0 0 auto;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .tab-btn span {
        font-size: var(--font-size-xs);
    }
    
    .filter-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .user-card,
    .friend-card {
        flex-direction: column;
        text-align: center;
    }
    
    .user-avatar img {
        width: 80px;
        height: 80px;
    }
    
    .profile-header {
        flex-direction: column;
        text-align: center;
    }
    
    .auth-section {
        margin: var(--spacing-lg) auto;
    }
    
    .auth-card {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .brand h1 {
        font-size: var(--font-size-lg);
    }
    
    .logo {
        font-size: 28px;
    }
    
    .filter-grid {
        grid-template-columns: 1fr;
    }
    
    .age-range {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .user-mbti {
        display: none;
    }
    
    .post-item-header {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .post-item-user {
        flex-wrap: wrap;
    }
}

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

:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}