*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:Arial,sans-serif;background:#f0f2f5;}
header{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;padding:20px;text-align:center;box-shadow:0 2px 10px rgba(0,0,0,0.1);}
header h1{font-size:28px;margin-bottom:5px;}
header p{font-size:14px;opacity:0.9;}
nav{background:#2c3e50;padding:0;box-shadow:0 2px 5px rgba(0,0,0,0.1);}
nav a{color:#ecf0f1;text-decoration:none;padding:15px 20px;display:inline-block;transition:background 0.3s;}
nav a:hover{background:#34495e;}
main{max-width:1200px;margin:30px auto;padding:0 20px;}
h1{color:#2c3e50;margin-bottom:20px;font-size:24px;}
table{width:100%;border-collapse:collapse;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,0.1);border-radius:8px;overflow:hidden;}
th,td{border:1px solid #ddd;padding:12px;text-align:left;}
th{background:#34495e;color:#fff;font-weight:600;}
tr:nth-child(even){background:#f8f9fa;}
tr:hover{background:#e9ecef;}
form{background:#fff;padding:25px;max-width:500px;box-shadow:0 2px 8px rgba(0,0,0,0.1);border-radius:8px;}
dl{margin:0;}
dt{margin-top:15px;font-weight:600;color:#2c3e50;}
dd{margin:5px 0 0 0;}
input[type=text],input[type=number]{width:100%;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:14px;}
input[type=text]:focus,input[type=number]:focus{outline:none;border-color:#667eea;}
input[type=submit]{background:#667eea;color:#fff;padding:12px 30px;border:none;border-radius:4px;cursor:pointer;font-size:14px;margin-top:15px;transition:background 0.3s;}
input[type=submit]:hover{background:#5568d3;}
a{color:#667eea;text-decoration:none;}
a:hover{text-decoration:underline;}
.msg{padding:10px;margin:15px 0;border-radius:4px;background:#d4edda;color:#155724;border:1px solid #c3e6cb;}


footer{
    background: #667eea;
    text-align:center;
    padding: 0;
    width: 100%;
    font-size: 14px;
    position: absolute;
    bottom: 0;
}