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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: #ffffff;
}

.header {
    background-color: #1a1a1a;
    padding: 12px 24px;
}

.logo {
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
}

.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.bulb-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bulb {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.bulb-glow {
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 230, 150, 0.4) 0%, rgba(255, 220, 100, 0.2) 40%, transparent 70%);
    border-radius: 50%;
    top: -60px;
    animation: pulse 3s ease-in-out infinite;
}

.bulb-body {
    width: 100px;
    height: 120px;
    background: linear-gradient(135deg, #fffacd 0%, #ffeb3b 50%, #ffd700 100%);
    border-radius: 50% 50% 50% 50% / 55% 55% 45% 45%;
    position: relative;
    box-shadow: 
        inset -10px -10px 30px rgba(0, 0, 0, 0.1),
        inset 10px 10px 30px rgba(255, 255, 255, 0.5),
        0 20px 60px rgba(255, 220, 100, 0.4);
    animation: bulbGlow 3s ease-in-out infinite;
}

.filament {
    position: absolute;
    width: 8px;
    height: 50px;
    background: linear-gradient(to bottom, #ff8c00 0%, #ff4500 100%);
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    animation: filamentGlow 3s ease-in-out infinite;
}

.filament::before,
.filament::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid #ff8c00;
    border-radius: 50%;
    top: 10px;
}

.filament::before {
    left: -14px;
    transform: rotate(-45deg);
}

.filament::after {
    right: -14px;
    transform: rotate(45deg);
}

.bulb-base {
    width: 35px;
    height: 25px;
    background: linear-gradient(90deg, #666 0%, #999 50%, #666 100%);
    border-radius: 0 0 5px 5px;
    position: relative;
}

.bulb-base::before {
    content: '';
    position: absolute;
    width: 45px;
    height: 10px;
    background: linear-gradient(90deg, #555 0%, #888 50%, #555 100%);
    top: -5px;
    left: -5px;
    border-radius: 3px;
}

.bulb-base::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 8px;
    background: #333;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.footer {
    background-color: #1a1a1a;
    padding: 10px;
    text-align: center;
}

.copyright {
    color: #666666;
    font-size: 12px;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
    }
}

@keyframes bulbGlow {
    0%, 100% {
        box-shadow: 
            inset -10px -10px 30px rgba(0, 0, 0, 0.1),
            inset 10px 10px 30px rgba(255, 255, 255, 0.5),
            0 20px 60px rgba(255, 220, 100, 0.4);
    }
    50% {
        box-shadow: 
            inset -10px -10px 30px rgba(0, 0, 0, 0.1),
            inset 10px 10px 30px rgba(255, 255, 255, 0.5),
            0 30px 80px rgba(255, 220, 100, 0.6);
    }
}

@keyframes filamentGlow {
    0%, 100% {
        opacity: 0.8;
    }
    50% {
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .bulb-body {
        width: 70px;
        height: 85px;
    }
    
    .bulb-glow {
        width: 140px;
        height: 140px;
        top: -40px;
    }
    
    .header {
        padding: 10px 16px;
    }
    
    .logo {
        font-size: 14px;
    }
}