/* 全局样式 */
:root {
    --primary: #1677ff;
    --primary-hover: #4096ff;
    --success: #52c41a;
    --warning: #faad14;
    --error: #ff4d4f;
    --bg-dark: #0d1117;
    --bg-card: #161b22;
    --bg-surface: #21262d;
    --border: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --radius: 12px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

#app {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px 16px;
}

/* 头部 */
.header {
    margin-bottom: 24px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
}

.logo h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.badge {
    background: var(--primary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.time {
    color: var(--text-secondary);
    font-size: 13px;
}

/* 卡片 */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.card-header h2 {
    font-size: 15px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

/* 状态徽章 */
.status-badge {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    background: var(--bg-surface);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.status-badge.running {
    background: rgba(22, 119, 255, 0.1);
    color: var(--primary);
    border-color: var(--primary);
    animation: pulse 1.5s infinite;
}

.status-badge.success {
    background: rgba(82, 196, 26, 0.1);
    color: var(--success);
    border-color: var(--success);
}

.status-badge.error {
    background: rgba(255, 77, 79, 0.1);
    color: var(--error);
    border-color: var(--error);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* 输入组 */
.input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.input-group input {
    flex: 1;
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: var(--primary);
}

.input-group input::placeholder {
    color: var(--text-muted);
}

/* 快速选择标签 */
.quick-targets {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.quick-targets .label {
    color: var(--text-secondary);
    font-size: 13px;
}

.tag {
    padding: 4px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(22, 119, 255, 0.05);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

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

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-success:hover {
    background: #73d13d;
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: 4px 12px;
    font-size: 12px;
    background: var(--bg-surface);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
}

/* 进度条 */
.progress-section .card {
    padding: 16px 20px;
}

.progress-bar {
    height: 4px;
    background: var(--bg-surface);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-hover));
    border-radius: 2px;
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 信息网格 */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-item label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-item span {
    font-size: 14px;
    color: var(--text-primary);
    word-break: break-all;
}

/* DNS 摘要 */
.dns-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

/* 连通性摘要 */
.connect-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

/* MTR 信息 */
.mtr-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

/* 表格 */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    text-align: left;
    padding: 10px 12px;
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover td {
    background: rgba(22, 119, 255, 0.03);
}

/* 丢包率高亮 */
.loss-ok { color: var(--success); }
.loss-warn { color: var(--warning); }
.loss-error { color: var(--error); }

/* 下载测速 */
.download-result {
    display: flex;
    align-items: center;
    gap: 40px;
}

.speed-display {
    text-align: center;
    min-width: 140px;
}

.speed-value {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
}

.speed-unit {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.download-details {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

/* 响应头 */
.response-headers {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.response-headers h4 {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.response-headers pre {
    background: var(--bg-surface);
    padding: 12px;
    border-radius: 8px;
    font-size: 12px;
    line-height: 1.6;
    overflow-x: auto;
    color: var(--text-secondary);
}

/* 操作栏 */
.action-bar {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* 报告内容 */
.report-content {
    background: var(--bg-surface);
    padding: 16px;
    border-radius: 8px;
    font-size: 12px;
    line-height: 1.8;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 500px;
    overflow-y: auto;
    color: var(--text-secondary);
}

/* 批量域名检测 */
.batch-test-section {
    margin-bottom: 20px;
}

.batch-test-section:last-of-type {
    margin-bottom: 16px;
}

.batch-group-title {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.batch-test-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 8px;
}

.batch-test-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bg-surface);
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: border-color 0.2s;
}

.batch-test-item.testing {
    border-color: var(--primary);
    animation: pulse 1.5s infinite;
}

.batch-test-item.normal {
    border-color: var(--success);
}

.batch-test-item.slow {
    border-color: var(--warning);
}

.batch-test-item.error {
    border-color: var(--error);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.batch-domain-name {
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 500;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.batch-test-result {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    white-space: nowrap;
}

.batch-latency {
    color: var(--text-secondary);
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.batch-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.batch-status-dot.normal {
    background: var(--success);
}

.batch-status-dot.slow {
    background: var(--warning);
}

.batch-status-dot.error {
    background: var(--error);
}

.batch-status-dot.testing {
    background: var(--primary);
    animation: pulse 1s infinite;
}

.batch-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.text-success {
    color: var(--success) !important;
}

.text-error {
    color: var(--error) !important;
}

/* 响应式 */
@media (max-width: 768px) {
    #app {
        padding: 12px;
    }

    .info-grid,
    .dns-summary,
    .connect-summary,
    .mtr-info {
        grid-template-columns: repeat(2, 1fr);
    }

    .download-result {
        flex-direction: column;
        gap: 20px;
        align-items: stretch;
        text-align: center;
    }

    .download-details {
        grid-template-columns: 1fr 1fr;
    }

    .input-group {
        flex-direction: column;
    }

    .action-bar {
        flex-direction: column;
    }

    .data-table {
        font-size: 12px;
    }

    .data-table th,
    .data-table td {
        padding: 6px 8px;
    }
}

@media (max-width: 480px) {
    .info-grid,
    .dns-summary,
    .connect-summary,
    .mtr-info {
        grid-template-columns: 1fr;
    }

    .download-details {
        grid-template-columns: 1fr;
    }
}

/* Toast 通知 */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    background: var(--success);
    color: white;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    z-index: 9999;
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.5s forwards;
    box-shadow: 0 4px 12px rgba(82, 196, 26, 0.3);
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}