:root {
    --bg-color: #0b0c10;
    --card-bg: #14161d;
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover: rgba(255, 255, 255, 0.14);
    --text-main: #f5f6fa;
    --text-muted: #8c90a4;
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --green: #10b981;
    --yellow: #f59e0b;
    --red: #ef4444;
    --blue: #3b82f6;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    line-height: 1.5;
}

/* 登录界面 */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: radial-gradient(circle at top, #1e1b4b 0%, #0b0c10 70%);
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 36px 32px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.login-header {
    text-align: center;
    margin-bottom: 24px;
}

.logo-circle {
    width: 48px;
    height: 48px;
    background: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 12px;
}

.login-header h2 {
    font-size: 20px;
    font-weight: 700;
}

.login-header p {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.login-footer {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 18px;
}

/* 顶部导航 */
.navbar {
    height: 64px;
    background: rgba(20, 22, 29, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 15px;
}

.logo-badge {
    background: var(--primary);
    color: #fff;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 11px;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    gap: 6px;
    align-items: center;
}

.nav-item {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.nav-item:hover, .nav-item.active {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
}

.nav-item.btn-logout {
    color: var(--red);
    margin-left: 8px;
}

/* 主容器 */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 通用卡片与 Banner */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 22px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 12px;
}

.card-header h2 {
    font-size: 18px;
    font-weight: 700;
}

.dashboard-banner {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.15) 0%, rgba(20, 22, 29, 0.9) 100%);
    border: 1px solid rgba(79, 70, 229, 0.3);
    border-radius: 14px;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 22px;
    flex-wrap: wrap;
    gap: 16px;
}

.dashboard-banner h2 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.dashboard-banner p {
    font-size: 13px;
    color: var(--text-muted);
}

/* 指标卡片网格 */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 16px;
}

.metric-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 20px;
    transition: transform 0.2s, border-color 0.2s;
}

.metric-card:hover {
    border-color: var(--card-hover);
    transform: translateY(-2px);
}

.metric-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-muted);
}

.metric-value {
    font-size: 32px;
    font-weight: 800;
    margin: 8px 0 4px;
    letter-spacing: -0.5px;
}

.metric-desc {
    font-size: 11px;
    color: var(--text-muted);
}

/* 表单组件 */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 10px 14px;
    color: #fff;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

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

.btn-primary {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 9px 14px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

/* 导入界面特别样式 */
.import-format-box {
    background: rgba(79, 70, 229, 0.08);
    border: 1px dashed rgba(79, 70, 229, 0.35);
    border-radius: 10px;
    padding: 14px 18px;
    font-size: 12px;
    line-height: 1.8;
    color: #c7d2fe;
    margin-bottom: 16px;
}

.import-format-box code {
    background: rgba(0, 0, 0, 0.4);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    color: #fff;
}

.import-textarea {
    width: 100%;
    height: 280px;
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 14px;
    color: #e5e7eb;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.6;
    outline: none;
    resize: vertical;
}

.import-textarea:focus {
    border-color: var(--primary);
}

.import-result-card {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 10px;
    padding: 18px;
    margin-top: 18px;
}

.result-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 12px;
}

.res-item {
    background: rgba(0, 0, 0, 0.35);
    padding: 10px 14px;
    border-radius: 8px;
}

.res-item .lbl {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
}

.res-item b {
    font-size: 20px;
}

/* 筛选与搜索条 */
.filter-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

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

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

.data-table th {
    background: rgba(0, 0, 0, 0.3);
    padding: 12px 14px;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--card-border);
    white-space: nowrap;
}

.data-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--card-border);
    color: var(--text-main);
    word-break: break-all;
}

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

/* 状态徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}

.badge-green {
    background: rgba(16, 185, 129, 0.15);
    color: var(--green);
}

.badge-yellow {
    background: rgba(245, 158, 11, 0.15);
    color: var(--yellow);
}

/* 业务流程展示 */
.logic-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    overflow-x: auto;
    padding: 12px 0;
}

.flow-step {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 12px 16px;
    flex: 1;
    min-width: 180px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.step-badge {
    width: 28px;
    height: 28px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    flex-shrink: 0;
}

.step-text {
    font-size: 12px;
}

.flow-arrow {
    color: var(--text-muted);
    font-size: 18px;
}

/* 分页 */
.pagination-bar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

/* 工具样式 */
.text-green { color: var(--green); }
.text-yellow { color: var(--yellow); }
.text-red { color: var(--red); }
.text-blue { color: var(--blue); }
.text-center { text-align: center; }
.muted { color: var(--text-muted); font-size: 12px; }

/* 移动端响应适配 */
@media (max-width: 768px) {
    .navbar {
        padding: 0 16px;
    }
    .brand-title {
        display: none;
    }
    .nav-menu {
        overflow-x: auto;
        max-width: 75%;
    }
    .metrics-grid {
        grid-template-columns: 1fr 1fr;
    }
    .filter-bar {
        flex-direction: column;
    }
    .logic-flow {
        flex-direction: column;
        align-items: stretch;
    }
    .flow-arrow {
        text-align: center;
        transform: rotate(90deg);
        margin: -4px 0;
    }
}