body{
    font-family: 'Inter', Arial, Helvetica, sans-serif;
    background: linear-gradient(180deg, #FFFAF0, #f0f0f0);
    margin: 0;
    color: #333;
}

header{
    width: 100%;
    text-align: center;
    padding: 30px 20px;
    font-size: 28px;
    font-variant: small-caps;
    background: linear-gradient(135deg, #6bbf59, #5aa0d6);
    color: #fff;
    letter-spacing: 0.08em;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
}

nav{
    margin: 20px 0;
    background-color: #ffffffcc;
    backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

nav ul{
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 20px;
}

nav ul li{
    transition: all 0.3s ease;
}

nav a{
    display: block;
    padding: 12px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    color: #333;
    transition: all 0.3s ease;
}

nav a:hover{
    background: #6bbf59;
    color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

nav ul li:hover{
    background-color: lightgray;
    text-align: center;
    color: #fff;
    opacity: 1;
    visibility: visible;
}
nav ul li:hover .dropdown{
    opacity: 1;
    visibility: visible;
}

main section{
    max-width: 600px;
    background: #fff;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    margin: 40px auto;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

footer{
    text-align: center;
    padding: 20px;
    font-size: 14px;
    color: #666;
    margin-top: 40px;
    border-top: 1px solid #ddd;
}

.knopki{
    text-align: center;
    margin-top: 20px;
}

.knopki .btn{
    display: inline-block;
    padding: 10px 20px;
    border-radius: 25px;
    background: #6bbf59;
    color: #fff;
    font-weight: 600;
    text-decoration: none;
    transition: 0.3s ease;
    margin: 0 10px;
}

.knopki .btn:hover{
    background: #5aa0d6;
}

#message{
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    color: red;
    font-size: 22px;
    text-align: center;
    margin-top: 20px;
}

.sectionnn{
    max-width: 700px;
    margin: 30px auto;
    border: 2px solid #6bbf59;
    border-radius: 20px;
    padding: 20px;
    background: #fff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.07);
    text-align: center;
}