.navbar{display:flex;justify-content:space-between;align-items:center;background-color:#b1d8d5;padding:10px 20px;box-shadow:0 4px 8px #0000001a;position:relative}.navbar-logo img{height:80px}.navbar-links{display:flex;gap:20px}.navbar-links a{text-decoration:none;color:#030303;font-size:18px;font-weight:500;padding:8px 12px;border-radius:5px;transition:background .3s ease,color .3s ease}.navbar-links a:hover{background-color:#1abc9c;color:#fff}.hamburger{display:none;font-size:28px;cursor:pointer}@media (max-width: 768px){.navbar{flex-direction:column;align-items:center;padding:10px}.hamburger{display:block;position:absolute;top:15px;right:20px}.navbar-links{display:none;flex-direction:column;gap:10px;margin-top:10px;width:100%;text-align:center}.navbar-links.open{display:flex}.navbar-links a{padding:10px;width:100%}}.container{text-align:center;background-color:#f4f4f4;padding:30px;border-radius:10px;width:90%;max-width:400px;margin:50px auto;box-shadow:0 0 10px #0000001a}h2{color:#333;margin-bottom:20px}input,select{width:100%;padding:12px;margin:10px 0;border:1px solid #ddd;border-radius:5px;font-size:16px;box-sizing:border-box;background-color:#fff;cursor:pointer}button{width:100%;padding:12px;background-color:#007bff;border:none;color:#fff;font-size:16px;cursor:pointer;margin-top:10px;border-radius:5px}button:hover{background-color:#0056b3}.qr-container{margin-top:20px;padding:10px;background-color:#fff;display:inline-block;border-radius:5px;box-shadow:0 0 5px #0003}.download-btn{margin-top:10px;padding:10px 15px;font-size:14px;background-color:#007bff;color:#fff;border:none;cursor:pointer;border-radius:5px}.download-btn:hover{background-color:#0056b3}@media (max-width: 600px){.container{width:95%;padding:20px}input,button{font-size:14px;padding:10px}.download-btn{font-size:12px;padding:8px 12px}}.container{text-align:center;background-color:#f8f9fa;padding:30px;border-radius:10px;width:90%;max-width:400px;margin:50px auto;box-shadow:0 0 10px #0000001a}h2{color:#222;margin-bottom:20px;font-size:22px}input{width:100%;padding:12px;margin:10px 0;border:1px solid #ddd;border-radius:5px;font-size:16px}button{width:100%;padding:12px;background-color:#28a745;border:none;color:#fff;font-size:16px;cursor:pointer;margin-top:10px;border-radius:5px;transition:background .3s ease-in-out}button:hover{background-color:#218838}#reader{margin-top:20px;display:flex;justify-content:center;align-items:center;width:100%;max-width:400px;background:#fff;border-radius:10px;padding:10px;box-shadow:0 2px 5px #0000001a}.message-modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.message-content{background:#fff;padding:20px;border-radius:10px;text-align:center;max-width:300px;box-shadow:0 0 10px #0000004d;animation:fadeIn .3s ease-in-out}.message-content p{margin-bottom:10px;font-size:16px;font-weight:700;color:#222}.message-content button{padding:10px 15px;background:#28a745;border:none;color:#fff;cursor:pointer;border-radius:5px;font-size:14px;transition:background .3s ease-in-out}.message-content button:hover{background:#218838}@keyframes fadeIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@media (max-width: 600px){.container{width:95%;padding:20px}h2{font-size:20px}button{font-size:14px;padding:10px}}@media (max-width: 400px){.container{width:100%;margin:20px auto;padding:15px}h2{font-size:18px}input{font-size:14px}button{font-size:14px;padding:10px}#reader{width:100%}.message-content{max-width:90%;padding:15px}.message-content p{font-size:14px}.message-content button{font-size:13px;padding:8px 12px}}.attendance-container{display:flex;flex-wrap:wrap;justify-content:space-between;padding:20px;gap:15px}.attendance-section{flex:1;min-width:300px;padding:15px;border-radius:8px;box-shadow:0 4px 8px #0000001a;background-color:#f9f9f9}.present{border-left:5px solid green}.absent{border-left:5px solid red}h2{text-align:center;margin-bottom:10px}table{width:100%;border-collapse:collapse;overflow-x:auto}th,td{padding:10px;border:1px solid #ddd;text-align:left;color:#000}th{background-color:#f1f1f1;color:#000}@media (max-width: 768px){.attendance-container{flex-direction:column;align-items:center}.attendance-section{width:100%;min-width:unset}table{display:block;overflow-x:auto;white-space:nowrap}}.totalcontainer{max-width:1000px;margin:auto;padding:20px;text-align:center;width:90%}.total{max-width:400px;font-size:1.5rem;font-weight:700;margin:20px auto auto;padding:15px;color:tomato;text-align:center;background-color:#050505;border-radius:10px;box-shadow:0 0 10px #0000001a}table{width:100%;border-collapse:collapse;margin-top:20px}th,td{padding:12px;border:1px solid #ddd;text-align:left;font-size:16px}th{background-color:#3b3602;color:#fff;font-size:18px}.error{color:red;font-weight:700}@media (max-width: 768px){.total{width:90%;font-size:1.3rem;padding:10px}table{display:block;overflow-x:auto;white-space:nowrap}th,td{font-size:14px;padding:10px}}@media (max-width: 480px){.total{width:100%;font-size:1.2rem;padding:8px}th,td{font-size:13px;padding:8px}}