body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    text-align: center;
    padding: 20px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.countdown {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.time-unit {
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: 10px;
    min-width: 120px;
    backdrop-filter: blur(10px);
}

.number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.label {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

@media (max-width: 600px) {
    .countdown {
        gap: 1rem;
    }
    
    .time-unit {
        min-width: 100px;
        padding: 0.8rem;
    }

    .number {
        font-size: 2rem;
    }

    .label {
        font-size: 0.8rem;
    }
}