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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    width: 100%;
    text-align: center;
}

h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 1.8em;
    font-weight: 600;
}

.light-container {
    margin: 40px 0;
}

.bulb-wrapper {
    position: relative;
    display: inline-block;
}

.bulb {
    font-size: 100px;
    transition: all 0.2s ease;
    filter: grayscale(100%);
    position: relative;
    display: inline-block;
}

.bulb.on {
    filter: grayscale(0%);
}

.bulb-glow {
    display: none;
}

.status-text {
    font-size: 1.2em;
    font-weight: 500;
    margin-top: 20px;
    color: #666;
    transition: color 0.2s ease;
}

.status-text.on {
    color: #333;
}

.controls {
    margin: 30px 0;
}

.btn {
    padding: 12px 24px;
    font-size: 1em;
    border: 1px solid #ddd;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
    margin: 8px;
    background: white;
    color: #333;
}

.btn:hover {
    background: #f8f8f8;
    border-color: #bbb;
}

.btn:active {
    background: #e8e8e8;
}

.btn-toggle {
    background: #333;
    color: white;
    border-color: #333;
    width: 100%;
    font-size: 1em;
}

.btn-toggle:hover {
    background: #555;
    border-color: #555;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.btn-on {
    background: white;
    color: #333;
    flex: 1;
}

.btn-on:hover {
    background: #f8f8f8;
}

.btn-off {
    background: white;
    color: #333;
    flex: 1;
}

.btn-off:hover {
    background: #f8f8f8;
}

.info-panel {
    background: #fafafa;
    border-radius: 5px;
    padding: 15px;
    margin-top: 25px;
    border: 1px solid #e0e0e0;
}

.info-panel h3 {
    color: #555;
    margin-bottom: 10px;
    font-size: 1em;
    font-weight: 600;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.info-item span:first-child {
    color: #666;
    font-weight: 400;
}

.status-badge {
    padding: 4px 12px;
    border-radius: 3px;
    font-weight: 500;
    font-size: 0.85em;
}

.status-badge.on {
    background: #333;
    color: white;
}

.status-badge.off {
    background: #e0e0e0;
    color: #666;
}

@media (max-width: 480px) {
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 1.5em;
    }
    
    .bulb {
        font-size: 80px;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    .btn-on, .btn-off {
        width: 100%;
    }
}