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

:root {
    --bg-color: #0d0d12;
    --panel-bg: #16161f;
    --panel-bg-light: #1e1e2b;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --border-color: #2a2a3a;
    --accent-purple: #a855f7;
    --accent-purple-hover: #9333ea;
    --success-color: #22c55e;
    --info-color: #3b82f6;
    --danger-color: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* 登录页 */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-box {
    width: 100%;
    max-width: 400px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.login-box h1 {
    font-size: 24px;
    margin-bottom: 8px;
    text-align: center;
}

.login-subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 32px;
}

.login-input-group {
    margin-bottom: 20px;
}

.login-input-group input {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
}

.login-submit-btn {
    width: 100%;
    padding: 14px;
    font-size: 15px;
}

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

.btn-primary {
    background: var(--accent-purple);
    color: #fff;
}

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

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    color: var(--text-primary);
    border-color: var(--accent-purple);
}

.btn-block {
    width: 100%;
    padding: 12px;
}

/* 后台布局 */
.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 32px;
}

.admin-header h1 {
    font-size: 20px;
    font-weight: 600;
}

.admin-nav {
    display: flex;
    gap: 8px;
}

.nav-item {
    padding: 8px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
}

.nav-item:hover {
    color: var(--text-primary);
    background: var(--panel-bg-light);
}

.nav-item.active {
    color: #fff;
    background: var(--accent-purple);
}

.admin-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.stat-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
}

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

.text-info {
    color: var(--info-color);
}

.text-purple {
    color: var(--accent-purple);
}

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

/* 面板 */
.panel {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.panel-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header .panel-title {
    margin: 0;
    padding: 0;
    border: none;
}

.panel-total {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 表单 */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    background: var(--panel-bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-purple);
}

.form-group input::placeholder {
    color: #5a5a6a;
}

.form-help {
    color: #6a6a7a;
    font-size: 12px;
    margin-top: 6px;
}

.form-actions {
    margin-top: 24px;
}

/* 测试解析 */
.test-box {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.test-box input {
    flex: 1;
    background: var(--panel-bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

.test-box input:focus {
    border-color: var(--accent-purple);
}

.test-result {
    background: var(--panel-bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
}

.test-result pre {
    color: var(--text-secondary);
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
}

.test-video-box {
    margin-top: 16px;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    display: none;
}

.test-video-box video {
    width: 100%;
    max-height: 420px;
    display: block;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.data-table td {
    color: var(--text-primary);
}

.data-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.status-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.status-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success-color);
}

.status-fail {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
}

.text-center {
    text-align: center;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--panel-bg-light);
    border: 1px solid var(--border-color);
    text-decoration: none;
    cursor: pointer;
}

.pagination a:hover,
.pagination span.active {
    color: #fff;
    background: var(--accent-purple);
    border-color: var(--accent-purple);
}

.pagination span.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 响应式 */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .test-box {
        flex-direction: column;
    }

    .admin-container {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}