* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

    #desktop-only-element {
        display: none;
    }

    @media (min-width: 992px) {
        #desktop-only-element {
            display: block;
        }
    }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 2rem;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    color: white;
}

.controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.status {
    background: rgba(255, 255, 255, 0.95);
    padding: 1rem 2rem;
    border-radius: 12px;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    display: inline-block;
    width: 100%;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    display: block;
}

.status.hidden {
    display: none;
}

.status.win-status {
    background: #10b981;
    color: white;
}

.status.lose-status {
    background: #ef4444;
    color: white;
}

.status.retry-status {
    background: #3b82f6;
    color: white;
    animation: pulse 1s infinite;
}

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

.doors {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto 2rem;
}

.door {
    background: #5c4033;
    border: 4px solid #3d2817;
    border-radius: 12px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.door:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.door.selected {
    border-color: #fbbf24;
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.5);
}

.door.open {
    background: #f5e6d3;
    border-color: #fbbf24;
}

.door-content {
    font-size: 4rem;
    font-weight: bold;
    color: rgba(255, 255, 255, 0.3);
}

.door.open .door-content {
    font-size: 5rem;
}

.actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.actions.hidden {
    display: none;
}

.btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-switch {
    background: #3b82f6;
    color: white;
}

.btn-stay {
    background: white;
    color: #333;
    border: 2px solid #3b82f6;
}

.btn-primary {
    background: #fbbf24;
    color: #333;
}

.btn-toggle-on {
    background: #10b981;
    color: white;
}

.btn-toggle-off {
    background: #6b7280;
    color: white;
}

.btn-reset {
    background: #ef4444;
    color: white;
}

.stats {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.stats h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 1rem;
}

.stat-box h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.switch-stats h3 {
    color: #3b82f6;
}

.stay-stats h3 {
    color: #ef4444;
}

.stat-detail {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    transition: width 0.5s ease;
}

.switch-fill {
    background: #3b82f6;
}

.stay-fill {
    background: #ef4444;
}

.stat-percent {
    font-size: 1.5rem;
    font-weight: bold;
}

.switch-stats .stat-percent {
    color: #3b82f6;
}

.stay-stats .stat-percent {
    color: #ef4444;
}

.retry-count {
    text-align: center;
    padding: 1rem;
    border-top: 1px solid #e5e7eb;
    font-size: 1rem;
    color: #666;
}

.retry-count span {
    color: #3b82f6;
    font-weight: bold;
}

.stats-note {
    text-align: center;
    font-size: 0.9rem;
    color: #666;
    font-style: italic;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .doors {
        gap: 1rem;
    }
    
    .door {
        height: 200px;
    }
    
    .actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}