body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    margin: 0;
}

nav {
    width: 100%;
    background-color: #333;
    overflow: hidden;
}

nav a {
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
}

nav a:hover {
    background-color: #ddd;
    color: black;
}

nav a.active {
    background-color: #4CAF50;
    color: white;
}

.register-link {
    float: right;
}

.auth-btn {
    float: right;
    background: none;
    border: none;
    color: white;
    padding: 14px 16px;
    font-size: 17px;
    cursor: pointer;
}

.auth-btn:hover {
    background-color: #ddd;
    color: black;
}

.protected {
    display: none;
}

.container {
    max-width: 600px;
    width: 100%;
    padding: 20px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    background-color: #f9f9f9;
    margin-top: 20px;
    margin-bottom: 20px;
}


.form-group {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.form-group label {
    flex: 1;
    margin-right: 10px;
}

.form-group input, .form-group select {
    flex: 2;
    padding: 8px;
    margin-right: 10px;
    box-sizing: border-box;
}

input[type="submit"], input[type="button"] {
    width: 100%;
    padding: 10px;
    cursor: pointer;
    font-size: 16px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 8px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

.navigation {
        width: 100%;
}

/* Chat Styles */
.chat-container {
    display: flex;
    width: 100%;
    max-width: 1000px;
    margin-top: 20px;
}

.chat-list {
    width: 30%;
    border-right: 1px solid #ddd;
    max-height: 80vh;
    overflow-y: auto;
}

.chat-item {
    padding: 10px;
    cursor: pointer;
    border-bottom: 1px solid #eee;
}

.chat-item:hover {
    background-color: #f2f2f2;
}

.chat-item.unread {
    font-weight: bold;
    background-color: #e6f7ff;
}

.chat-item.active {
    background-color: #4CAF50;
    color: white;
}

.chat-item.active:hover {
    background-color: #4CAF50;
}

.chat-main {
    width: 70%;
    display: flex;
    flex-direction: column;
    height: 80vh;
}

.chat-header {
    padding: 10px;
    border-bottom: 1px solid #ddd;
    background-color: #f2f2f2;
}

.messages {
    flex: 1;
    padding: 10px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.message {
    margin: 5px 0;
    padding: 8px 12px;
    border-radius: 8px;
    max-width: 70%;
}

.message.other {
    align-self: flex-start;
    background-color: #e0e0e0;
    text-align: left;
}

.message.me {
    align-self: flex-end;
    background-color: #cfe9ba;
    text-align: right;
}

.message-form {
    display: flex;
    border-top: 1px solid #ddd;
}

.message-form input {
    flex: 1;
    padding: 10px;
    border: none;
    outline: none;
}

.message-form button {
    padding: 10px 20px;
}

#offerHeader input {
    padding: 4px;
}

.offer-row {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.offer-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.offer-actions {
    margin-top: 10px;
    display: flex;
    gap: 5px;
}