body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
}
header, footer {
    background-color: #15384b;
    color: #fff;
    padding: 10px;
    text-align: center;
}
.container-aside {
    display: flex;
    flex: 1;
}
aside {
    width: 20%;
    background-color: #15384b;
    padding: 10px;
    color: white;
}
main {
    flex: 1;
    padding: 10px;
}

aside ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
aside h1 {
    width: 100%;
    text-align: center;
}
aside ul li {
    width: 100%;
}
aside ul li a {
    display: block;
    width: 100%;
    padding-top: 12px;
    padding-bottom: 12px;
    text-decoration: none;
    background: #15384b;
    color: #fff;
    text-align: center;
    font-size: 16px;
    font-weight: bold;
    border-radius: 5px;
    transition: background 0.3s, color 0.3s;
}
aside ul li a:hover {
    background: #007bff;
    color: white;
}
.user-info {
    width: 100%;
    text-align: center;
    padding-top: 10px;
    padding-bottom: 50px;
}
.user-info-username {
    padding-top: 15px;
}
.user-info-btn a {
    display: inline-block;
    background-color: #dc3545;
    color: white;
    text-decoration: none;
    margin-top: 20px;
    padding: 7px 14px;
    border-radius: 7px;
    transition: background-color 0.3s ease;
}
.user-info-btn:hover a {
    background-color: #c82333;
}

.form-container {
    width: 50%;
    margin: 20px auto;
    background: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: center;

    display: flex;
    flex-direction: column;
    align-items: center;
}
.form-container h2 {
    margin-bottom: 20px;
    color: #333;
}
.form-container form {
    display: flex;
    flex-direction: column;
    /*gap: 15px;*/
    align-items: center;
    width: 100%;
}
.form-container form div {
    display: flex;
    flex-direction: column;
    width: 80%;
    text-align: left;
}
.form-container label {
    margin-bottom: 5px;
    font-weight: bold;
}
.form-container input {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 5px;
    width: 100%;
}
.btn-submit {
    background: #007bff;
    color: #fff;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
    width: 20%;
    margin-top: 15px;
}
.btn-submit:hover {
    background: #0056b3;
}

.container {
    margin: 10px auto;
    max-width: 100%;
}
.pseudo-table {
    display: flex;
    flex-direction: column;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    width: 100%;
}
.row {
    display: flex;
    width: 100%;
    border-bottom: 1px solid #ddd;
    transition: background-color 0.2s ease;
}
.row.header {
    background-color: #f4f4f4;
    font-weight: bold;
}
.row:last-child {
    border-bottom: none;
}
.row:not(.header):hover {
    background-color: #e8f4ff;
}
.cell {
    flex: 1;
    text-align: center;
    padding: 10px;
    box-sizing: border-box;
    word-wrap: break-word;
    min-width: 0;
}
.btn {
    padding: 5px 10px;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
.btn-danger {
    background-color: #dc3545;
}
.btn-danger:hover {
    background-color: #c82333;
}
.btn-ok {
    background-color: #2aec5b;
}
.btn-ok:hover {
    background-color: #00ff40;
}

.offers-table {
    width: 100%;
    border-collapse: collapse;
}
.offers-table th, .offers-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}
.offers-table th {
    background-color: #f4f4f4;
    font-weight: bold;
}

.messages {
    margin: 20px 0;
    padding: 0;
    list-style: none;
}
.messages li {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid transparent;
    border-radius: 5px;
}
.messages li.success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}
.messages li.error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}
.error-list {
    color: red;
    font-size: 0.9rem;
    list-style: none;
    padding: 0;
}
.form-container select {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 5px;
    width: 100%;
    background-color: #fff;
    font-size: 1rem;
}
.form-container input[type="checkbox"] {
    width: auto;
    margin: 8px 0;
    transform: scale(1.2);
    vertical-align: middle;
}