body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 80px;
    z-index: 100;
}

main {
    margin-top: 80px;
}

h1 {
    color: #333;
}

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

th,
td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

td.number {
    text-align: right;
}

th {
    background-color: #f2f2f2;
}

.api-category {
    margin: 20px 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.api-category h2 {
    color: #333;
}

.api-card {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 15px;
    margin: 10px;
    width: 300px;
    display: inline-block;
    vertical-align: top;
}

.api-card h3 {
    margin-top: 0;
    color: #444;
}

.filter {
    margin-bottom: 20px;
}

.server-list {
    margin: 20px;
    padding: 0;
    list-style: none;
}

.server-item {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    padding: 10px;
    background: #f5f5f5;
    border-radius: 4px;
}

.server-index {
    margin-right: 10px;
    font-weight: bold;
}

.server-name {
    flex: 1;
}

.rename-input {
    margin-right: 10px;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.btn {
    padding: 5px 10px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.btn:hover {
    background: #45a049;
}

.btn:disabled {
    background: #cccccc;
    cursor: not-allowed;
    opacity: 0.6;
}

.renamed-server {
    background-color: #ffdddd;
    color: #cc0000;
    font-weight: bold;
}

.server-new {
    background-color: #e6f7ff;
    color: #ff8000;
}

.server-recommend {
    background-color: #f6ffed;
    color: #52c41a;
}

.server-hot {
    background-color: #fff7e6;
    color: #fb0e0e;
}

.server-smooth {
    background-color: #f6ffed;
    color: #52c41a;
}

.server-maintenance {
    background-color: #999;
    color: white;
}

/* Navigation Bar Styles */
.navbar {
    background-color: #333;
    overflow: hidden;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.navbar a {
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

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

/* Login Page Styles */
.login-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-container h1 {
    text-align: center;
    color: #333;
    margin-bottom: 1.5rem;
}

.login-container input {
    width: 100%;
    padding: 0.75rem;
    margin: 0.5rem 0;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.login-container button {
    width: 100%;
    padding: 1rem;
    margin: 1rem 0;
    font-size: 1rem;
    text-align: center;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

/* .login-container button:hover {
    background-color: #45a049;
} */

/* Sendmail Page Styles */
.sendmail-form {
    margin: 20px;
}

.sendmail-form .form-group {
    margin-bottom: 15px;
}

.sendmail-form label {
    display: inline-block;
    width: 100px;
}

.sendmail-form input,
.sendmail-form textarea {
    width: 300px;
    padding: 5px;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    display: none;
    z-index: 1000;
}

.spinner {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 2s linear infinite;
    margin: 20% auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}