/* ------------------- ОБЩИЕ СТИЛИ ------------------- */
body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    margin: 0;
    padding: 0;
}

a {
    color: #0077cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ------------------- ШАПКА ------------------- */
header {
    background-color: #0077cc;
    color: #fff;
    padding: 15px 0;
    text-align: center;
    font-size: 24px;
    font-weight: bold;
}

/* ------------------- НАВИГАЦИЯ ------------------- */
nav {
    background-color: #e2e2e2;
    padding: 10px 0;
    text-align: center;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline-block;
    margin: 0 15px;
}

nav ul li a {
    font-weight: bold;
    color: #0077cc;
}

/* ------------------- ОСНОВНОЙ КОНТЕНТ ------------------- */
main {
    padding: 20px;
}

/* ------------------- ТАБЛИЦЫ ------------------- */
table {
    width: 90%;
    margin: 20px auto;
    border-collapse: collapse;
    background-color: #fff;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

table th, table td {
    border: 1px solid #ccc;
    padding: 8px 12px;
    text-align: center;
}

table th {
    background-color: #0077cc;
    color: #fff;
}

/* ------------------- ФОРМЫ ------------------- */
form dl {
    width: 300px;
    margin: 20px auto;
}

form dt {
    margin-top: 10px;
    font-weight: bold;
}

form dd input {
    width: 100%;
    padding: 5px;
    margin-top: 5px;
    box-sizing: border-box;
}

input[type="submit"] {
    margin-top: 15px;
    padding: 8px 15px;
    background-color: #0077cc;
    color: #fff;
    border: none;
    cursor: pointer;
    font-weight: bold;
}

input[type="submit"]:hover {
    background-color: #005fa3;
}

/* ------------------- ПОДВАЛ ------------------- */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 12px 0;
    margin-top: 20px;
    font-size: 14px;
}