/*
 * 面板样式。深色为主（运维面板长时间盯着看，深色更省眼），同时提供浅色。
 *
 * 配色取自经过校验的调色板：两个数据系列（入站蓝 / 出站橙）在深浅两种模式下
 * 都满足色盲可辨识度和对比度要求，状态色与系列色刻意区分开，
 * 且状态永远配文字标签，不靠颜色单独表意。
 */

:root {
    color-scheme: dark;

    --plane: #0d0d0d;
    --surface-1: #1a1a19;
    --surface-2: #212120;
    --surface-hover: #2a2a28;

    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;

    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);

    /* 数据系列 */
    --series-rx: #3987e5;
    --series-tx: #d95926;

    /* 状态 */
    --good: #0ca30c;
    --warning: #fab219;
    --serious: #ec835a;
    --critical: #d03b3b;

    --radius: 10px;
    --radius-sm: 6px;
    --font: system-ui, -apple-system, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

:root[data-theme="light"] {
    color-scheme: light;

    --plane: #f9f9f7;
    --surface-1: #fcfcfb;
    --surface-2: #f2f2ef;
    --surface-hover: #eaeae6;

    --text-primary: #0b0b0b;
    --text-secondary: #52514e;
    --text-muted: #898781;

    --grid: #e1e0d9;
    --axis: #c3c2b7;
    --border: rgba(11, 11, 11, 0.1);

    --series-rx: #2a78d6;
    --series-tx: #eb6834;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font);
    background: var(--plane);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--series-rx);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* --- 布局 --- */

.app {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 208px;
    flex-shrink: 0;
    background: var(--surface-1);
    border-right: 1px solid var(--border);
    padding: 18px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.brand {
    font-size: 15px;
    font-weight: 650;
    padding: 4px 10px 16px;
    letter-spacing: 0.2px;
}

.brand small {
    display: block;
    font-weight: 400;
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13.5px;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
}

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

.nav-item.active {
    background: var(--surface-hover);
    color: var(--text-primary);
    font-weight: 600;
}

.nav-spacer {
    flex: 1;
}

.main {
    flex: 1;
    padding: 22px 26px 60px;
    min-width: 0;
}

.page-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.page-head h1 {
    margin: 0;
    font-size: 20px;
    font-weight: 650;
}

.page-head p {
    margin: 4px 0 0;
    color: var(--text-muted);
    font-size: 13px;
}

/* --- 卡片 --- */

.card {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
}

.card + .card {
    margin-top: 16px;
}

.card-title {
    font-size: 14px;
    font-weight: 620;
    margin: 0 0 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.grid {
    display: grid;
    gap: 14px;
}

.grid-stats {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.grid-nodes {
    grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
}

/* --- 统计磁贴 --- */

.stat {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.stat-value {
    font-size: 25px;
    font-weight: 600;
    line-height: 1.15;
}

.stat-value.compact {
    font-size: 19px;
    line-height: 1.3;
}

.stat-sub {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* --- 节点卡片 --- */

.node-card {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 15px 16px;
    display: flex;
    flex-direction: column;
    gap: 11px;
}

.node-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
}

.node-name {
    font-weight: 620;
    font-size: 15px;
    cursor: pointer;
}

.node-name:hover {
    color: var(--series-rx);
}

.node-meta {
    font-size: 12px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.node-rates {
    display: flex;
    gap: 16px;
    font-size: 12.5px;
    font-variant-numeric: tabular-nums;
    color: var(--text-secondary);
}

/* --- 状态徽标：颜色 + 文字，不靠颜色单独表意 --- */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 20px;
    background: var(--surface-2);
    color: var(--text-secondary);
    white-space: nowrap;
    font-weight: 500;
}

.badge .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    flex-shrink: 0;
}

.badge.good {
    color: var(--good);
}

.badge.warning {
    color: var(--warning);
}

.badge.serious {
    color: var(--serious);
}

.badge.critical {
    color: var(--critical);
}

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

/* --- 配额进度条 --- */

.meter {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.meter-head {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

.meter-track {
    height: 7px;
    background: var(--surface-2);
    border-radius: 4px;
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    border-radius: 4px;
    background: var(--series-rx);
    transition: width 0.35s ease;
}

.meter-fill.warning {
    background: var(--warning);
}

.meter-fill.critical {
    background: var(--critical);
}

/* --- 图例 --- */

.legend {
    display: flex;
    gap: 16px;
    font-size: 12.5px;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-swatch {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    flex-shrink: 0;
}

/* --- 图表 --- */

.chart-wrap {
    position: relative;
}

.chart-wrap svg {
    display: block;
    width: 100%;
    overflow: visible;
}

.chart-tooltip {
    position: absolute;
    pointer-events: none;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    font-size: 12px;
    box-shadow: 0 6px 22px rgba(0, 0, 0, 0.35);
    z-index: 5;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.chart-tooltip .tt-time {
    color: var(--text-muted);
    margin-bottom: 5px;
}

.chart-tooltip .tt-row {
    display: flex;
    align-items: center;
    gap: 7px;
    justify-content: space-between;
}

.chart-tooltip .tt-row span:last-child {
    font-weight: 600;
    margin-left: 12px;
}

.chart-empty {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* --- 表单 --- */

label {
    display: block;
    font-size: 12.5px;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

input[type="text"],
input[type="password"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 7px 10px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 13.5px;
}

textarea {
    min-height: 88px;
    resize: vertical;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 12.5px;
}

input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--series-rx);
    outline-offset: -1px;
}

input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--series-rx);
    vertical-align: -2px;
    margin-right: 6px;
}

.field {
    margin-bottom: 13px;
}

.field-hint {
    font-size: 11.5px;
    color: var(--text-muted);
    margin-top: 4px;
    line-height: 1.45;
}

.field-row {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.checkbox-label {
    display: flex;
    align-items: center;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
    margin-bottom: 0;
}

fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
    margin: 0 0 14px;
}

legend {
    font-size: 12.5px;
    color: var(--text-secondary);
    padding: 0 6px;
}

/* --- 按钮 --- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 13px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 13px;
    font-family: inherit;
    white-space: nowrap;
}

.btn:hover:not(:disabled) {
    background: var(--surface-hover);
}

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

.btn.primary {
    background: var(--series-rx);
    border-color: var(--series-rx);
    color: #fff;
}

.btn.primary:hover:not(:disabled) {
    filter: brightness(1.1);
}

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

.btn.danger:hover:not(:disabled) {
    background: rgba(208, 59, 59, 0.12);
}

.btn.small {
    padding: 4px 9px;
    font-size: 12px;
}

.btn-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* --- 表格 --- */

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

th {
    text-align: left;
    font-weight: 560;
    color: var(--text-muted);
    font-size: 12px;
    padding: 7px 10px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

tbody tr:hover {
    background: var(--surface-2);
}

td.num,
th.num {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.table-scroll {
    overflow-x: auto;
}

/* --- 弹窗 --- */

.modal-mask {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 16px;
    overflow-y: auto;
    z-index: 100;
}

.modal {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 680px;
    padding: 20px 22px;
}

.modal h2 {
    margin: 0 0 16px;
    font-size: 17px;
    font-weight: 620;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

/* --- 提示条 --- */

.toast-wrap {
    position: fixed;
    right: 18px;
    bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 200;
    max-width: 400px;
}

.toast {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-left: 3px solid var(--series-rx);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 13px;
    box-shadow: 0 8px 26px rgba(0, 0, 0, 0.4);
}

.toast.error {
    border-left-color: var(--critical);
}

.toast.success {
    border-left-color: var(--good);
}

.notice {
    padding: 10px 13px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: var(--surface-2);
    border-left: 3px solid var(--warning);
    margin-bottom: 14px;
    line-height: 1.5;
}

.notice.error {
    border-left-color: var(--critical);
}

/* --- 登录页 --- */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-box {
    width: 100%;
    max-width: 340px;
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
}

.login-box h1 {
    margin: 0 0 4px;
    font-size: 19px;
}

.login-box p {
    margin: 0 0 20px;
    color: var(--text-muted);
    font-size: 12.5px;
}

/* --- 杂项 --- */

.mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 12.5px;
    word-break: break-all;
}

.code-block {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 12px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.6;
}

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

.tabular {
    font-variant-numeric: tabular-nums;
}

.empty {
    padding: 34px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

.spinner {
    display: inline-block;
    width: 13px;
    height: 13px;
    border: 2px solid var(--text-muted);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.seg {
    display: inline-flex;
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    padding: 2px;
    gap: 2px;
}

.seg button {
    border: none;
    background: none;
    color: var(--text-secondary);
    padding: 4px 11px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12.5px;
    font-family: inherit;
}

.seg button.active {
    background: var(--surface-hover);
    color: var(--text-primary);
    font-weight: 560;
}

@media (max-width: 760px) {
    .app {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        flex-direction: row;
        overflow-x: auto;
        padding: 10px;
    }

    .brand,
    .nav-spacer {
        display: none;
    }

    .main {
        padding: 16px 14px 40px;
    }
}