* {
    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;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #fff;
}

.container {
    width: 100%;
    max-width: 1200px;
}

.main-time {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 60px 40px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.time-display {
    font-size: 96px;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.date-display {
    font-size: 32px;
    margin-bottom: 10px;
    opacity: 0.9;
}

.week-display {
    font-size: 24px;
    opacity: 0.8;
    margin-bottom: 20px;
}

.timezone-display {
    font-size: 18px;
    opacity: 0.7;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    display: inline-block;
}

.sync-info {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.sync-status {
    font-size: 20px;
    line-height: 1.6;
}

.sync-fast {
    color: #ffd700;
}

.sync-slow {
    color: #ff6b6b;
}

.sync-perfect {
    color: #51cf66;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.info-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    opacity: 0.8;
}

.info-card .value {
    font-size: 28px;
    font-weight: 600;
}

.world-times {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.world-times h2 {
    font-size: 28px;
    margin-bottom: 25px;
    text-align: center;
}

.world-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.world-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.world-item .city {
    font-size: 18px;
    margin-bottom: 10px;
    opacity: 0.9;
}

.world-item .time {
    font-size: 32px;
    font-weight: 600;
}

.world-item .date {
    font-size: 14px;
    opacity: 0.7;
    margin-top: 5px;
}

@media (max-width: 768px) {
    .time-display {
        font-size: 56px;
    }
    .date-display {
        font-size: 24px;
    }
    .main-time {
        padding: 40px 20px;
    }
}