* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.user-info {
    display: flex;
    gap: 10px;
    align-items: center;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #45a049;
}

button.danger {
    background: #f44336;
}

button.danger:hover {
    background: #da190b;
}

.main-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.search-section {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.search-section input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.form-container {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.form-container input {
    width: 100%;
    padding: 10px;
    margin: 5px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.server-list {
    display: grid;
    gap: 15px;
}

.server-card {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #4CAF50;
}

.server-card.offline {
    border-left-color: #f44336;
}

.server-info h3 {
    margin-bottom: 10px;
    color: #333;
}

.server-meta {
    display: flex;
    gap: 15px;
    font-size: 14px;
    color: #666;
}

.login-form {
    max-width: 400px;
    margin: 100px auto;
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.login-form input {
    width: 100%;
    padding: 12px;
    margin: 8px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.admin-sections {
    display: grid;
    gap: 20px;
}

.admin-section {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.ip-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
}

.ip-controls input {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.ip-lists {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 15px;
}

.ip-list {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    max-height: 300px;
    overflow-y: auto;
}

.ip-item {
    padding: 8px;
    margin: 5px 0;
    background: white;
    border-radius: 3px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}