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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    overflow: hidden;
}

.container {
    text-align: center;
    padding: 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    border: 1px solid rgba(255, 255, 255, 0.18);
    max-width: 900px;
    width: 90%;
}

h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInDown 1s ease-in-out;
}

.target-date {
    font-size: 1.5rem;
    margin-bottom: 40px;
    opacity: 0.9;
    animation: fadeIn 1.5s ease-in-out;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.time-unit {
    background: rgba(255, 255, 255, 0.2);
    padding: 30px 25px;
    border-radius: 15px;
    min-width: 140px;
    backdrop-filter: blur(5px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: fadeInUp 1s ease-in-out;
}

.time-unit:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.time-value {
    font-size: 4rem;
    font-weight: bold;
    display: block;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1;
}

.time-label {
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 10px;
    opacity: 0.9;
}

.message {
    font-size: 1.3rem;
    margin-top: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    animation: pulse 2s infinite;
}

.expired {
    font-size: 2.5rem;
    color: #ffd700;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .target-date {
        font-size: 1.2rem;
    }
    
    .countdown {
        gap: 15px;
    }
    
    .time-unit {
        min-width: 100px;
        padding: 20px 15px;
    }
    
    .time-value {
        font-size: 2.5rem;
    }
    
    .time-label {
        font-size: 0.9rem;
    }
    
    .message {
        font-size: 1rem;
    }
}