/* ===== CSS VARIABLES ===== */
:root {
    /* Colors - Professional & Elegant */
    --primary-navy: #1a2332;
    --secondary-gold: #f4a261;
    --success-green: #2a9d8f;
    --background-gray: #f8f9fa;
    --text-charcoal: #2d3436;
    --white: #ffffff;
    --light-gray: #e9ecef;
    --border-light: #dee2e6;
    --shadow-sm: 0 2px 4px rgba(26, 35, 50, 0.08);
    --shadow-md: 0 4px 8px rgba(26, 35, 50, 0.12);
    --shadow-lg: 0 8px 16px rgba(26, 35, 50, 0.16);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --transition: all 0.2s ease-in-out;
    
    /* Server Bingo Colors */
    --bingo-gold: #ffd700;
    --bingo-orange: #e67e22;
    --bingo-navy: #2c3e50;
    --bingo-green: #27ae60;
    --bingo-red: #e74c3c;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-gray);
    color: var(--text-charcoal);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== LAYOUT ===== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* ===== HEADER ===== */
.header {
    background: var(--primary-navy);
    color: var(--white);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: left;
}

.logo-main {
    display: block;
    line-height: 1.2;
}

.logo-sub {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 400;
    opacity: 0.8;
    margin-top: -2px;
}

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

.username {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===== AUTHENTICATION SECTION ===== */
.auth-section {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) 0;
}

.auth-container {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    width: 100%;
    max-width: 400px;
}

.auth-tabs {
    display: flex;
    margin-bottom: var(--spacing-xl);
    background: var(--light-gray);
    border-radius: var(--border-radius);
    padding: 4px;
}

.auth-tab {
    flex: 1;
    background: none;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: calc(var(--border-radius) - 4px);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-charcoal);
    cursor: pointer;
    transition: var(--transition);
}

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

.welcome-text {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.welcome-text h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

.welcome-text p {
    color: var(--text-charcoal);
    opacity: 0.7;
    font-size: var(--font-size-sm);
}

.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--primary-navy);
    font-size: var(--font-size-sm);
}

.input-group input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: var(--transition);
    background: var(--white);
}

.input-group input:focus {
    outline: none;
    border-color: var(--secondary-gold);
    box-shadow: 0 0 0 3px rgba(244, 162, 97, 0.1);
}

.input-group small {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-charcoal);
    opacity: 0.6;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    min-height: 48px; /* Touch-friendly */
}

.btn-primary {
    background: var(--primary-navy);
    color: var(--white);
    width: 100%;
}

.btn-primary:hover {
    background: #243242;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

/* ===== TAB NAVIGATION ===== */
.tab-nav {
    background: var(--white);
    border-bottom: 1px solid var(--border-light);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 80px;
    z-index: 90;
}

.tab-buttons {
    display: flex;
    overflow-x: auto;
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-xs);
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.tab-buttons::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 72px;
    padding: var(--spacing-sm);
    background: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-charcoal);
    font-size: var(--font-size-xs);
    white-space: nowrap;
}

.tab-btn:hover {
    background: var(--light-gray);
}

.tab-btn.active {
    background: var(--primary-navy);
    color: var(--white);
}

.tab-btn.logout-btn {
    margin-left: auto;
    color: #dc3545;
}

.tab-btn.logout-btn:hover {
    background: #f8d7da;
}

.tab-icon {
    font-size: var(--font-size-lg);
    margin-bottom: 2px;
}

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

/* ===== TAB CONTENT ===== */
.tab-content {
    flex: 1;
    padding: var(--spacing-lg) 0;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.game-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.game-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

.game-header p {
    color: var(--text-charcoal);
    opacity: 0.7;
    font-size: var(--font-size-base);
}

/* ===== PROFILE TAB ===== */
.profile-header {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.profile-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-lg);
}

.profile-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.avatar {
    width: 60px;
    height: 60px;
    background: var(--secondary-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.profile-details h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

.join-date {
    color: var(--text-charcoal);
    opacity: 0.7;
    font-size: var(--font-size-sm);
}

.stats-overview {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.stats-overview h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-lg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    background: var(--light-gray);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-charcoal);
    opacity: 0.7;
}

.game-stats {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.game-stats h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-lg);
}

/* ===== GAME CONTENT ===== */
.game-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    min-height: 400px;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--text-charcoal);
    opacity: 0.7;
    font-size: var(--font-size-base);
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    top: 100px;
    right: var(--spacing-md);
    z-index: 1000;
    max-width: 300px;
}

.toast {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--success-green);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
}

.toast.show {
    transform: translateX(0);
}

.toast.error {
    border-left-color: #dc3545;
}

.toast.warning {
    border-left-color: var(--secondary-gold);
}

/* ===== LOADING OVERLAY ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 35, 50, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    color: var(--white);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 767px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .auth-container {
        padding: var(--spacing-lg);
        margin: var(--spacing-md);
    }
    
    .profile-info {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .logo {
        font-size: var(--font-size-lg);
    }
    
    .tab-content {
        padding: var(--spacing-md) 0;
    }
    
    .game-content {
        padding: var(--spacing-lg);
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }
.visible { display: block !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-xs) !important; }
.mt-2 { margin-top: var(--spacing-sm) !important; }
.mt-3 { margin-top: var(--spacing-md) !important; }
.mt-4 { margin-top: var(--spacing-lg) !important; }

/* ===== CONNECTIONS GAME STYLES ===== */
.connections-game {
    max-width: 600px;
    margin: 0 auto;
}

.game-header-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--border-radius);
}

.user-level {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.level-badge {
    background: var(--primary-navy);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.theme-strength {
    font-size: var(--font-size-xs);
    color: var(--text-charcoal);
    opacity: 0.7;
}

.puzzle-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
}

.puzzle-source, .difficulty-mix {
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.puzzle-source {
    color: var(--secondary-gold);
    margin-bottom: var(--spacing-xs);
}

.difficulty-mix {
    color: var(--text-charcoal);
    opacity: 0.7;
}

.game-status {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

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

.mistake-dots {
    display: flex;
    gap: var(--spacing-xs);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-light);
    transition: var(--transition);
}

.dot.active {
    background: var(--primary-navy);
}

.game-timer {
    font-weight: 600;
    color: var(--primary-navy);
}

.word-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.word-item {
    background: var(--light-gray);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    text-align: center;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
}

.word-item:hover {
    background: var(--border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.word-item.selected {
    background: var(--secondary-gold);
    color: var(--white);
    border-color: var(--secondary-gold);
}

.word-item.correct {
    background: var(--success-green);
    color: var(--white);
    cursor: not-allowed;
}

.game-controls {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.game-controls .btn {
    flex: 1;
    min-width: 100px;
}

.hint-system {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.btn-accent {
    background: var(--secondary-gold);
    color: var(--white);
    border: none;
    transition: var(--transition);
}

.btn-accent:hover {
    background: #e29449;
    transform: translateY(-1px);
}

.hint-display {
    background: var(--white);
    border: 2px solid var(--secondary-gold);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
    position: relative;
    box-shadow: var(--shadow-lg);
}

.hint-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--primary-navy);
}

.hint-text {
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-charcoal);
}

.hint-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--text-charcoal);
    opacity: 0.7;
}

.hint-close:hover {
    opacity: 1;
}

.found-groups {
    margin-bottom: var(--spacing-xl);
}

.found-group {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--success-green);
}

.found-group.difficulty-easy {
    border-left-color: #4CAF50;
}

.found-group.difficulty-medium {
    border-left-color: #FF9800;
}

.found-group.difficulty-hard {
    border-left-color: #F44336;
}

.found-group.difficulty-tricky {
    border-left-color: #9C27B0;
}

.group-words {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.group-word {
    background: var(--light-gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.group-info {
    text-align: center;
}

.group-category {
    font-weight: 700;
    color: var(--primary-navy);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
}

.group-meta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    align-items: center;
}

.theme-tag, .difficulty-tag {
    font-size: var(--font-size-xs);
    padding: 2px var(--spacing-xs);
    border-radius: 12px;
    font-weight: 500;
}

.theme-tag {
    background: rgba(244, 162, 97, 0.2);
    color: var(--secondary-gold);
}

.difficulty-tag {
    background: rgba(26, 35, 50, 0.1);
    color: var(--primary-navy);
}

.game-over-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 35, 50, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.game-over-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    max-width: 800px;
    width: 95%;
    max-height: 80vh;
    overflow-y: auto;
    text-align: center;
}

.game-over-content h3 {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--border-radius);
}

.stat-number {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-charcoal);
    opacity: 0.7;
}

.ai-insights {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.ai-insights h4 {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.insight-item {
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.game-over-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.stats-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 35, 50, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
}

.stats-modal-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.stats-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--light-gray);
}

.close-modal {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--text-charcoal);
    opacity: 0.7;
}

.close-modal:hover {
    opacity: 1;
}

.stats-section {
    margin-bottom: var(--spacing-xl);
}

.stats-section h4 {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-md);
}

.theme-progress {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.theme-name {
    min-width: 120px;
    font-weight: 500;
    font-size: var(--font-size-sm);
}

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

.progress-fill {
    height: 100%;
    background: var(--success-green);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.theme-score {
    min-width: 40px;
    text-align: right;
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--primary-navy);
}

.recommendations {
    list-style: none;
    padding: 0;
}

.recommendations li {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: var(--spacing-xl);
}

.recommendations li:before {
    content: "🎯";
    position: absolute;
    left: var(--spacing-md);
    top: var(--spacing-md);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.overview-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.overview-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

.overview-label {
    font-size: var(--font-size-sm);
    color: var(--text-charcoal);
    opacity: 0.7;
}

.strength-weakness {
    margin-top: var(--spacing-lg);
}

.strength-weakness h5 {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.theme-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.strength-tag, .weakness-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.strength-tag {
    background: rgba(42, 157, 143, 0.2);
    color: var(--success-green);
    border: 1px solid rgba(42, 157, 143, 0.3);
}

.weakness-tag {
    background: rgba(244, 162, 97, 0.2);
    color: var(--secondary-gold);
    border: 1px solid rgba(244, 162, 97, 0.3);
}

.theme-games {
    font-size: var(--font-size-xs);
    color: var(--text-charcoal);
    opacity: 0.6;
    margin-left: var(--spacing-xs);
}

.trends-info {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.trends-info p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-charcoal);
}

.trends-info p:last-child {
    margin-bottom: 0;
}

.loading {
    text-align: center;
    padding: var(--spacing-xl);
    font-style: italic;
    color: var(--text-charcoal);
    opacity: 0.7;
}

.test-controls {
    text-align: center;
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: rgba(244, 162, 97, 0.1);
    border-radius: var(--border-radius);
    border: 1px dashed var(--secondary-gold);
}

.btn-test {
    background: var(--secondary-gold);
    color: var(--white);
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: var(--spacing-sm);
}

.btn-test:hover {
    background: #e29449;
    transform: translateY(-1px);
}

.btn-test:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.test-note {
    display: block;
    color: var(--text-charcoal);
    opacity: 0.7;
    font-style: italic;
    margin-top: var(--spacing-xs);
}

/* Difficulty Control Styles */
.difficulty-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

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

.difficulty-selector label {
    font-weight: 500;
    color: var(--primary-navy);
    white-space: nowrap;
}

.difficulty-selector select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius);
    background: var(--white);
    font-size: var(--font-size-sm);
    color: var(--text-charcoal);
    min-width: 120px;
    cursor: pointer;
    transition: var(--transition);
}

.difficulty-selector select:focus {
    outline: none;
    border-color: var(--secondary-gold);
    box-shadow: 0 0 0 2px rgba(244, 162, 97, 0.2);
}

.difficulty-selector select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ai-adaptive-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-light);
    transition: var(--transition);
    border-radius: 12px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--white);
    transition: var(--transition);
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--secondary-gold);
}

input:checked + .toggle-slider:before {
    transform: translateX(26px);
}

.toggle-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-charcoal);
    white-space: nowrap;
}

.ai-adaptive-info {
    background: rgba(244, 162, 97, 0.1);
    border: 1px solid rgba(244, 162, 97, 0.3);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    margin-left: auto;
}

.performance-summary {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-charcoal);
}

.performance-summary strong {
    color: var(--primary-navy);
}

/* Connections Game Mobile Responsive Styles */
@media (max-width: 767px) {
    .word-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-xs);
    }
    
    .word-item {
        padding: var(--spacing-sm);
        min-height: 50px;
        font-size: var(--font-size-xs);
    }
    
    .game-controls .btn {
        min-width: 80px;
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .game-header-info {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .user-level, .puzzle-info {
        align-items: center;
    }
    
    .puzzle-info {
        text-align: center;
    }
    
    .game-status {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .overview-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .theme-bar {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }
    
    .theme-name {
        min-width: auto;
    }
    
    .game-over-actions {
        flex-direction: column;
    }
    
    .theme-tags {
        justify-content: center;
    }
    
    .difficulty-control {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .difficulty-selector {
        justify-content: space-between;
    }
    
    .ai-adaptive-toggle {
        justify-content: space-between;
    }
    
    .ai-adaptive-info {
        margin-left: 0;
    }
    
    .performance-summary {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

/* ===== SERVER BINGO STYLES ===== */

/* Intro Sequence */
.server-bingo-intro {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    text-align: center;
}

.intro-image-container {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.intro-image {
    max-width: min(90vw, 500px);
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    transition: all 1s ease-in-out;
}

.intro-image:hover {
    transform: scale(1.02);
}

.particle-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--bingo-gold);
    border-radius: 50%;
    animation: particleFloat 2s ease-out forwards;
    box-shadow: 0 0 6px var(--bingo-gold);
}

@keyframes particleFloat {
    0% {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
    100% {
        opacity: 0;
        transform: scale(0.5) translate(var(--end-x, 100px), var(--end-y, -100px));
    }
}

.pick-card-container {
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.pick-card-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    background: linear-gradient(135deg, var(--bingo-gold), var(--bingo-orange));
    color: var(--white);
    border: none;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.pick-card-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.pick-card-btn:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: var(--font-size-xl);
}

.btn-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: var(--spacing-xs) 0;
}

.btn-subtext {
    font-size: var(--font-size-sm);
    font-weight: 400;
    opacity: 0.9;
    font-style: italic;
}

/* Game Controls */
.game-controls {
    margin-top: var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.control-btn {
    background: var(--bingo-navy);
    color: var(--white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-btn:hover {
    background: var(--bingo-blue);
    transform: translateY(-1px);
}

/* Card Selection */
.card-selection-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
    min-height: 60vh;
    justify-content: center;
}

.card-selection-header {
    text-align: center;
}

.card-selection-header h3 {
    color: var(--bingo-navy);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.card-selection-header p {
    color: var(--text-charcoal);
    font-size: var(--font-size-lg);
}

.card-carousel {
    width: 100%;
    max-width: 600px;
    height: 200px;
    overflow: hidden;
    position: relative;
    border-radius: var(--border-radius-lg);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.card-track {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    height: 100%;
}

@keyframes cardSlide {
    0% {
        transform: translateX(0);
    }
    85% {
        transform: translateX(-85%);
    }
    100% {
        transform: translateX(-80%);
    }
}

.bingo-card-back {
    min-width: 120px;
    height: 160px;
    background: linear-gradient(135deg, var(--bingo-navy), var(--bingo-gold));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    position: relative;
    box-shadow: var(--shadow-md);
}

.card-back-design {
    text-align: center;
    padding: var(--spacing-sm);
}

.card-back-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255, 255, 255, 0.1) 10px,
        rgba(255, 255, 255, 0.1) 20px
    );
    border-radius: var(--border-radius);
}

.card-back-logo {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
}

.card-back-text {
    font-size: var(--font-size-xs);
    font-weight: 700;
    line-height: 1.2;
}

.selection-status {
    color: var(--bingo-navy);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.selection-particle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--bingo-gold);
    border-radius: 50%;
    animation: selectionParticleFloat 1.5s ease-out forwards;
    box-shadow: 0 0 8px var(--bingo-gold);
    z-index: 10;
}

@keyframes selectionParticleFloat {
    0% {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
    100% {
        opacity: 0;
        transform: scale(0.3) translate(var(--end-x, 100px), var(--end-y, -100px));
    }
}

/* Full-Size Card Flip */
.fullsize-card-reveal {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    min-height: calc(100vh - 120px);
    padding: 0;
    margin: 0;
}

.card-reveal-header {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.card-reveal-header h3 {
    color: var(--bingo-navy);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
}

.card-reveal-header p {
    color: var(--text-charcoal);
    font-size: var(--font-size-base);
}

.fullsize-card-container {
    width: 100vw;
    height: 100%;
    flex: 1;
    perspective: 1000px;
    padding: 0 2px;
    box-sizing: border-box;
}

.fullsize-card-flip {
    position: relative;
    width: 100%;
    min-height: 380px;
    max-height: calc(100vh - 200px);
    transition: transform 1.2s ease-in-out;
    transform-style: preserve-3d;
}

.fullsize-card-flip.flipped {
    transform: rotateY(180deg);
}

.card-front-fullsize {
    width: 100%;
    height: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    transform: none;
    backface-visibility: visible;
}

.card-back-fullsize {
    background: linear-gradient(135deg, var(--bingo-navy), var(--bingo-gold));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.card-front-fullsize {
    background: var(--white);
    transform: rotateY(180deg);
    padding: var(--spacing-xs);
    overflow: hidden;
}

/* Bingo Grid */
.bingo-grid {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 0;
    box-shadow: var(--shadow-md);
    max-width: 100%;
    margin: 0;
    width: 100%;
    height: auto;
    max-height: calc(100vh - 120px);
    display: flex;
    flex-direction: column;
}

.bingo-header {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
    margin: 0;
}

.bingo-letter {
    background: var(--bingo-navy);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-lg);
    border-radius: var(--border-radius);
}

.bingo-body {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: 0;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
}

.bingo-square {
    aspect-ratio: 1;
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius);
    cursor: pointer;
    position: relative;
    background: transparent;
    min-height: 70px;
    perspective: 1000px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.bingo-square:hover {
    border-color: var(--bingo-gold);
    transform: scale(1.02);
}

.square-flip {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s ease-in-out;
    transform-style: preserve-3d;
}

.square-flip.flipped {
    transform: rotateY(180deg);
}

.square-front,
.square-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4px;
}

.square-front {
    background: var(--white);
    color: var(--text-charcoal);
}

.square-back {
    background: linear-gradient(135deg, var(--bingo-green), #229954);
    color: var(--white);
    transform: rotateY(180deg);
    position: relative;
}

.bingo-square.free .square-front {
    background: linear-gradient(135deg, var(--bingo-gold), var(--bingo-orange));
    color: var(--white);
}

.bingo-square.free .square-back {
    background: linear-gradient(135deg, var(--bingo-gold), var(--bingo-orange));
}

.square-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.2;
    word-break: break-word;
    hyphens: auto;
}

.square-joke {
    font-size: var(--font-size-sm);
    font-weight: 700;
    line-height: 1.2;
    word-break: break-word;
    hyphens: auto;
    font-style: italic;
}

.mark-indicator {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--bingo-green);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Game Stats */
.game-stats {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-xs);
    padding: var(--spacing-xs);
    background: var(--background-gray);
    border-radius: var(--border-radius);
}

.stat {
    text-align: center;
    color: var(--text-charcoal);
    font-weight: 600;
}

/* Game Play Container */
.game-play-container {
    display: flex;
    flex-direction: column;
    max-width: 100%;
    margin: 0;
    padding: 0;
    min-height: calc(100vh - 140px);
    width: 100vw;
}

.game-header {
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--light-gray);
}

.game-header h3 {
    margin: 0;
    color: var(--bingo-navy);
}

.game-header p {
    margin: var(--spacing-xs) 0 0 0;
    color: var(--text-charcoal);
}

.game-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2px;
}

.game-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    padding: var(--spacing-sm);
    background: var(--light-gray);
}

.game-header-section {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.game-header-section h2 {
    color: var(--bingo-navy);
    margin-bottom: var(--spacing-sm);
}

.game-header-section p {
    color: var(--text-charcoal);
    margin-bottom: var(--spacing-xs);
}

.game-controls {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* Achievement Popup */
/* Particle Animations */
@keyframes particleBurst {
    0% {
        transform: scale(0) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: scale(1.5) rotate(180deg);
        opacity: 0.8;
    }
    100% {
        transform: scale(0) rotate(360deg);
        opacity: 0;
    }
}

.transition-particle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: radial-gradient(circle, gold, orange);
    border-radius: 50%;
    box-shadow: 0 0 10px gold;
}

.achievement-area {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    pointer-events: none;
}

.achievement-popup {
    background: linear-gradient(135deg, var(--bingo-gold), var(--bingo-orange));
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    animation: achievementSlide 0.5s ease-out;
    margin-bottom: var(--spacing-sm);
}

@keyframes achievementSlide {
    0% {
        transform: translateX(100%);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

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

.achievement-icon {
    font-size: var(--font-size-xl);
}

.achievement-text {
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .bingo-square {
        min-height: 70px;
    }
    
    .square-text {
        font-size: var(--font-size-sm);
        padding: 2px;
    }
    
    .square-joke {
        font-size: var(--font-size-sm);
        padding: 2px;
    }
    
    .game-play-container {
        padding: 0;
    }
    
    .mark-indicator {
        width: 18px;
        height: 18px;
        font-size: 11px;
    }
    
    .fullsize-card-reveal {
        padding: 0;
        gap: var(--spacing-xs);
    }
    
    .card-reveal-header h3 {
        font-size: var(--font-size-xl);
        margin: var(--spacing-xs) 0;
    }
    
    .fullsize-card-container {
        width: 100vw;
        padding: 0 2px;
    }
    
    .bingo-letter {
        font-size: var(--font-size-base);
        padding: var(--spacing-xs);
    }
    
    .intro-image {
        max-width: min(95vw, 400px);
    }
    
    .card-flip {
        width: 280px;
        height: 350px;
    }
    
    .achievement-area {
        right: 10px;
        top: 10px;
        left: 10px;
    }
    
    .achievement-popup {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .bingo-square {
        min-height: 65px;
    }
    
    .square-text {
        font-size: var(--font-size-xs);
        padding: 1px;
    }
    
    .square-joke {
        font-size: var(--font-size-xs);
        padding: 1px;
    }
    
    .game-play-container {
        padding: 0;
    }
    
    .bingo-grid {
        padding: 0;
    }
    
    .mark-indicator {
        width: 16px;
        height: 16px;
        font-size: 10px;
    }
    
    .fullsize-card-reveal {
        padding: 0;
        gap: var(--spacing-xs);
    }
    
    .card-reveal-header h3 {
        font-size: var(--font-size-lg);
        margin: 2px 0;
    }
    
    .card-reveal-header p {
        font-size: var(--font-size-sm);
        margin: 2px 0;
    }
    
    .fullsize-card-container {
        width: 100vw;
        padding: 0 1px;
    }
    
    .fullsize-card-flip {
        min-height: 320px;
        max-height: calc(100vh - 160px);
    }
    
    .bingo-body {
        max-height: calc(100vh - 220px);
    }
    
    .card-actions {
        flex-direction: column;
        align-items: center;
    }
}

/* ===== COLLECTIBLE BADGES SYSTEM ===== */
.collectible-badges-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 12px;
    border: 1px solid var(--border-light);
}

.badges-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.badges-header h3 {
    color: var(--primary-navy);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin: 0 0 var(--spacing-sm) 0;
}

.badges-subtitle {
    color: var(--text-charcoal);
    font-size: var(--font-size-sm);
    margin: 0;
    opacity: 0.8;
}

.badges-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: 400px;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.collectible-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--secondary-gold);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.collectible-badge:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.badge-image-container {
    position: relative;
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--light-gray);
    box-shadow: var(--shadow-sm);
}

.badge-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.collectible-badge:hover .badge-image {
    transform: scale(1.05);
}

.badge-shine {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.3) 50%, transparent 70%);
    transform: rotate(45deg);
    animation: shine 3s ease-in-out infinite;
}

@keyframes shine {
    0%, 100% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

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

.badge-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-navy);
    margin: 0 0 var(--spacing-xs) 0;
    font-style: italic;
}

.badge-description {
    font-size: var(--font-size-base);
    color: var(--text-charcoal);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.4;
}

.badge-timestamp {
    font-size: var(--font-size-xs);
    color: var(--secondary-gold);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Badge Earned Notification */
.badge-earned-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    background: linear-gradient(135deg, var(--success-green) 0%, #26a085 100%);
    color: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    opacity: 1;
    transform: translateY(0);
    transition: all 0.5s ease;
    animation: slideInBounce 0.5s ease-out;
}

@keyframes slideInBounce {
    0% {
        opacity: 0;
        transform: translateX(100%) scale(0.8);
    }
    60% {
        opacity: 1;
        transform: translateX(-10px) scale(1.05);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

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

.notification-icon {
    font-size: var(--font-size-xl);
    animation: pulse 1s ease-in-out infinite alternate;
}

@keyframes pulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.2); }
}

.notification-text {
    font-weight: 600;
    font-size: var(--font-size-base);
}

.notification-subtitle {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    font-style: italic;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .collectible-badge {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .badge-image-container {
        width: 100px;
        height: 100px;
    }
    
    .badges-container {
        max-height: 300px;
    }
    
    .badge-earned-notification {
        top: 10px;
        right: 10px;
        left: 10px;
        transform: translateY(-100%);
    }
    
    .badge-earned-notification.show {
        transform: translateY(0);
    }
}

/* Empty state */
.badges-container:empty::after {
    content: "No badges collected yet. Start marking off your server experiences to earn collectible badges!";
    display: block;
    text-align: center;
    color: var(--text-charcoal);
    opacity: 0.6;
    font-style: italic;
    padding: var(--spacing-lg);
    border: 2px dashed var(--border-light);
    border-radius: 8px;
    background: var(--light-gray);
}