.container-10 { 
            background: rgba(143, 142, 133, 0.5);
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 8px 32px rgba(0,0,0,0.5);
            text-align: center;
            border: 2px solid #542525;
            z-index: 15;
        }
        
        .countdown-txt {
            font-family: "moul"; 
            color: rgb(247, 253, 247); 
            text-shadow: 1px 1px rgb(142, 140, 129);
            text-align: center;
        }
        .countdown-txt2 {
            color: white;
        }
        
        .event-date { font-family: "siemreap";
            font-size: 1.2em;
            margin-bottom: 30px;
            opacity: 0.9;
            color: aliceblue;
        }
        
        .countdown {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin: 30px 0;
            width: 100%;
        }
        
        .time-unit {
            background: rgba(176, 109, 109, 0.4);
            padding: 10px 5px;
            border-radius: 10px;
            min-width: 5vw;
        }
        
        .time-value {
            font-weight: bold;
            color: rgb(26, 26, 105);
            font-family: 'Courier New', monospace;
        }
        
        .time-label {
            color: antiquewhite;
            font-family: "siemreap";
            font-size: 0.9em;
            opacity: 0.8;
            margin-top: 5px;
        }
        
        .message { font-family: "siemreap";
            color: aliceblue;
            margin-top: 20px;
            padding: 10px;
            border-radius: 8px;
            background: rgba(176, 109, 109, 0.4);
            font-size: 1.1em;
        }
        
/* 📊 TABLET - 575px ឡើងទៅ */
@media (min-width: 575px) {
        .container-10{
            width: 565px;
            margin-top: 40px;
            margin-left: 5px;
            margin-right:5px; 
        }
        .countdown-txt {
            font-size: 30px;
        }
        .countdown-txt2 {
            font-size: 25px;
        }
         .time-value {
            font-size: 90px;
        }
        .time-label {
            font-size: 30px;
        }
        .event-date{
            font-size: 30px;
        }
    }
        
/* 📱 PHONE - ទូរស័ព្ទតូចៗ (រហូតដល់ 574px) */
@media (max-width: 574px) {
        .container-10{
            width: 97%;
            margin-top: 40px;
            margin-left: 5px;
            margin-right: 15px; 
            margin-bottom: 40px;
        }
        .countdown-txt {
            font-size: 20px;
        }
        .countdown-txt2 {
            font-size: 15px;
        }
         .time-value {
            font-size: 50px;
        }
        .time-label {
            font-size: 20px;
        }
    }