:root {
    --primary-color: #4285f4;
    --secondary-color: #34a853;
    --danger-color: #ea4335;
    --warning-color: #fbbc05;
    --text-color: #333;
    --bg-color: #f5f5f5;
    --card-bg: #fff;
    --border-color: #ddd;
    --input-bg: #fff;
    --table-header-bg: #f1f1f1;
    --table-row-even: #f9f9f9;
}

[data-theme="dark"] {
    --primary-color: #8ab4f8;
    --secondary-color: #81c995;
    --danger-color: #f28b82;
    --warning-color: #fde293;
    --text-color: #e8eaed;
    --bg-color: #202124;
    --card-bg: #292a2d;
    --border-color: #5f6368;
    --input-bg: #303134;
    --table-header-bg: #3c4043;
    --table-row-even: #2d2e30;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    padding: 20px;
}

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

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.header-actions {
    display: flex;
    gap: 10px;
}

h1, h2, h3, h4 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.btn {
    padding: 8px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
}

.btn:hover {
    opacity: 0.9;
}

.btn-primary {
    background-color: var(--primary-color);
}

.btn-danger {
    background-color: var(--danger-color);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    font-size: 16px;
    color: #777;
}

.stat-card p {
    font-size: 24px;
    font-weight: bold;
}

.sites-container {
    margin-bottom: 40px;
}

.add-site-form {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

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

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

input[type="text"],
input[type="url"],
input[type="number"],
select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--input-bg);
    color: var(--text-color);
}

.form-checkbox-group {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.form-checkbox-group label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.site-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.site-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.site-card.status-up {
    border-left: 4px solid var(--secondary-color);
}

.site-card.status-down {
    border-left: 4px solid var(--danger-color);
}

.site-card.status-unknown {
    border-left: 4px solid var(--warning-color);
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.site-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.status-up .status-indicator {
    background-color: var(--secondary-color);
}

.status-down .status-indicator {
    background-color: var(--danger-color);
}

.status-unknown .status-indicator {
    background-color: var(--warning-color);
}

.site-details {
    padding: 15px;
}

.site-details p {
    margin-bottom: 8px;
}

.status-text {
    font-weight: 500;
}

.status-up .status-text {
    color: var(--secondary-color);
}

.status-down .status-text {
    color: var(--danger-color);
}

.site-history {
    padding: 15px;
    border-top: 1px solid var(--border-color);
}

.status-timeline {
    display: flex;
    gap: 5px;
}

.status-event {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

.status-event.status-up {
    background-color: var(--secondary-color);
}

.status-event.status-down {
    background-color: var(--danger-color);
}

.incidents {
    margin-top: 40px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--table-header-bg);
    font-weight: 500;
}

tr:nth-child(even) {
    background-color: var(--table-row-even);
}

tr.status-up {
    border-left: 4px solid var(--secondary-color);
}

tr.status-down {
    border-left: 4px solid var(--danger-color);
}

@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .stats {
        grid-template-columns: 1fr 1fr;
    }
    
    table {
        display: block;
        overflow-x: auto;
    }
}

@media (max-width: 480px) {
    .stats {
        grid-template-columns: 1fr;
    }
    
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
}

/* 在原有样式基础上添加以下内容 */

.btn-check {
    background-color: var(--warning-color);
    color: #333;
}

.fa-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.status-unknown {
    border-left: 4px solid var(--warning-color);
}

.status-unknown .status-indicator {
    background-color: var(--warning-color);
}

.status-unknown .status-text {
    color: var(--warning-color);
}