/* 主机监控页样式：与 woody-ai.cn 首页同一套「深空蓝」变量，保持视觉一致 */
:root {
    --bg-deep: #081426;
    --bg-mid: #0E2344;
    --bg-light: #133061;
    --accent: #6FB4FF;
    --accent-deep: #2F63C4;
    --text-primary: rgba(235, 244, 255, 0.95);
    --text-secondary: rgba(160, 195, 245, 0.75);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(140, 190, 255, 0.16);
    --ok: #4ADE80;
    --warn: #FFB25E;
    --crit: #FF6B6B;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(ellipse 900px 480px at 20% -10%, rgba(64, 140, 255, 0.14), transparent 60%),
        radial-gradient(ellipse 700px 400px at 85% 8%, rgba(90, 160, 255, 0.08), transparent 55%),
        linear-gradient(180deg, #081426 0%, #0B1D3A 60%, #0E2344 100%);
    color: var(--text-primary);
    min-height: 100vh;
    background-attachment: fixed;
}

/* ===== Header（与首页一致） ===== */
.site-header {
    background:
        radial-gradient(ellipse 620px 180px at 18% -40%, rgba(64, 140, 255, 0.28), transparent 62%),
        linear-gradient(135deg, #081426 0%, #0E2344 55%, #133061 100%);
    padding: 0 40px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    box-shadow: 0 2px 16px rgba(5, 16, 36, 0.45);
}
.site-header::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent 4%, rgba(140, 200, 255, 0.7) 30%, rgba(140, 200, 255, 0.3) 70%, transparent 96%);
}
.site-header::after {
    content: '';
    position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, rgba(56, 118, 217, 0.05), rgba(56, 118, 217, 0.6), rgba(56, 118, 217, 0.05));
}
.brand { display: flex; align-items: center; gap: 16px; text-decoration: none; }
.logo-badge {
    display: flex; align-items: center; justify-content: center;
    width: 50px; height: 50px; border-radius: 14px;
    background: #FFFFFF;
    border: 1.5px solid rgba(255, 255, 255, 0.85);
    box-shadow: 0 0 18px rgba(96, 160, 255, 0.5), 0 2px 8px rgba(5, 16, 36, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    flex-shrink: 0;
}
.logo-badge img { width: 40px; height: 40px; display: block; filter: saturate(1.2); }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text .name { font-size: 19px; font-weight: 600; letter-spacing: 1.5px; color: #FFFFFF; text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3); }
.brand-text .tagline {
    font-size: 10px; letter-spacing: 4.5px; color: #82C0FF; font-weight: 600; margin-top: 2px;
    text-shadow: 0 0 4px rgba(110, 176, 255, 0.85), 0 0 12px rgba(80, 150, 255, 0.5);
}
.header-nav { display: flex; gap: 8px; list-style: none; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
.header-nav::-webkit-scrollbar { display: none; }
.header-nav a {
    color: var(--text-secondary); text-decoration: none; font-size: 14px;
    padding: 8px 16px; border-radius: 8px; transition: color 0.25s, background 0.25s;
    white-space: nowrap; flex-shrink: 0;
}
.header-nav a:hover { color: #FFFFFF; background: rgba(96, 160, 255, 0.14); }
.header-nav a.active { color: #FFFFFF; background: rgba(96, 160, 255, 0.18); }

/* ===== 布局 ===== */
.content { max-width: 1180px; margin: 0 auto; padding: 104px 28px 40px; }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.page-head h1 { font-size: 24px; font-weight: 700; letter-spacing: 1.5px; color: #FFFFFF; }
.page-head .sub { margin-top: 8px; font-size: 12.5px; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.page-head .sub b { color: rgba(235, 244, 255, 0.9); font-weight: 600; }
.page-head .sep { opacity: 0.4; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-secondary); display: inline-block; box-shadow: 0 0 8px currentColor; }
.dot.ok { background: var(--ok); color: var(--ok); }
.dot.warn { background: var(--warn); color: var(--warn); }
.dot.crit { background: var(--crit); color: var(--crit); }

.toolbar { display: flex; align-items: center; gap: 10px; }
.seg { display: flex; border: 1px solid var(--card-border); border-radius: 9px; overflow: hidden; background: rgba(255, 255, 255, 0.04); }
.seg button {
    background: transparent; border: none; color: var(--text-secondary);
    font-size: 13px; padding: 7px 14px; cursor: pointer; font-family: inherit;
    transition: background 0.2s, color 0.2s;
}
.seg button + button { border-left: 1px solid rgba(140, 190, 255, 0.12); }
.seg button:hover { color: #FFFFFF; }
.seg button.active { background: rgba(96, 160, 255, 0.26); color: #FFFFFF; }
.btn {
    background: rgba(96, 160, 255, 0.16); border: 1px solid var(--card-border);
    color: var(--text-primary); font-size: 13px; padding: 7px 16px; border-radius: 9px;
    cursor: pointer; font-family: inherit; transition: background 0.2s, border-color 0.2s;
}
.btn:hover { background: rgba(96, 160, 255, 0.28); border-color: rgba(126, 181, 255, 0.45); }
.btn:disabled { opacity: 0.55; cursor: default; }

.banner {
    border: 1px solid rgba(255, 178, 94, 0.35); background: rgba(255, 178, 94, 0.10);
    color: #FFD9AE; font-size: 13px; padding: 11px 16px; border-radius: 10px; margin-bottom: 16px;
}
.banner.error { border-color: rgba(255, 107, 107, 0.4); background: rgba(255, 107, 107, 0.10); color: #FFC7C7; }

/* ===== KPI ===== */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi-card {
    background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 12px;
    padding: 16px 14px; text-align: center; position: relative; overflow: hidden;
    backdrop-filter: blur(8px);
}
.kpi-card::before {
    content: ''; position: absolute; top: 0; left: 22%; right: 22%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(126, 181, 255, 0.55), transparent);
}
.kpi-card.ok::before { background: linear-gradient(90deg, transparent, rgba(74, 222, 128, 0.65), transparent); }
.kpi-card.warn::before { background: linear-gradient(90deg, transparent, rgba(255, 178, 94, 0.7), transparent); }
.kpi-card.crit::before { background: linear-gradient(90deg, transparent, rgba(255, 107, 107, 0.75), transparent); }
.kpi-card .num { font-size: 22px; font-weight: 700; color: #FFFFFF; letter-spacing: 0.5px; }
.kpi-card.warn .num { color: var(--warn); }
.kpi-card.crit .num { color: var(--crit); }
.kpi-card .label { font-size: 12px; color: var(--text-secondary); margin-top: 5px; }
.kpi-card .note { font-size: 11px; color: rgba(160, 195, 245, 0.5); margin-top: 3px; }

/* ===== 面板 ===== */
.card-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.panel {
    background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 14px;
    padding: 16px 18px 14px; backdrop-filter: blur(8px); margin-bottom: 14px;
}
.card-row .panel { margin-bottom: 0; }
.panel-head {
    font-size: 13px; font-weight: 600; color: rgba(200, 225, 255, 0.9);
    margin-bottom: 12px; display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.panel-head .hint { font-size: 11.5px; font-weight: 400; color: rgba(160, 195, 245, 0.55); }
.chart { position: relative; width: 100%; height: 276px; display: flex; flex-direction: column; }
.chart-body { position: relative; flex: 1; min-height: 0; }
.chart svg { display: block; overflow: visible; }

/* SVG 图表图例 / 悬停读数（chart.js 生成）—— 图例独占一行，不压面板标题 */
.chart-legend {
    display: flex; flex-wrap: wrap; gap: 14px; justify-content: flex-end;
    margin: 0 2px 6px 0; font-size: 11px; color: var(--text-secondary); pointer-events: none;
}
.chart-legend .lg { display: flex; align-items: center; gap: 5px; white-space: nowrap; }
.chart-legend .lg i { width: 12px; height: 3px; border-radius: 2px; display: inline-block; }
.chart-tip {
    position: absolute; pointer-events: none; z-index: 3; min-width: 132px;
    background: rgba(10, 26, 50, 0.94); border: 1px solid rgba(140, 190, 255, 0.25);
    border-radius: 8px; padding: 8px 10px; font-size: 11.5px; color: var(--text-primary);
    box-shadow: 0 6px 18px rgba(3, 12, 28, 0.55);
}
.chart-tip .tip-ts { color: var(--text-secondary); margin-bottom: 5px; }
.chart-tip .tip-row { display: flex; align-items: center; gap: 6px; }
.chart-tip .tip-row i { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0; }
.chart-tip .tip-row span { flex: 1; color: rgba(200, 225, 255, 0.8); }
.chart-tip .tip-row b { font-weight: 600; color: #FFFFFF; }
.chart-empty { display: flex; align-items: center; justify-content: center; height: 100%; color: rgba(160,195,245,0.5); font-size: 13px; }

/* 骨架屏 */
.kpi-grid.skeleton .kpi-card .num { color: rgba(160, 195, 245, 0.3); }
.kpi-grid.skeleton .kpi-card .label { color: rgba(160, 195, 245, 0.45); }

/* ===== 文件系统 ===== */
.fs-list { display: flex; flex-direction: column; gap: 12px; }
.fs-row { display: flex; align-items: center; gap: 14px; }
.fs-mount { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; font-weight: 600; width: 68px; color: #FFFFFF; }
.fs-bar { flex: 1; height: 12px; border-radius: 7px; background: rgba(255, 255, 255, 0.07); overflow: hidden; }
.fs-bar > i { display: block; height: 100%; border-radius: 7px; background: linear-gradient(90deg, #4ADE80, #6FB4FF); transition: width 0.4s; }
.fs-bar.warn > i { background: linear-gradient(90deg, #FFD08A, #FFB25E); }
.fs-bar.crit > i { background: linear-gradient(90deg, #FF9B9B, #FF6B6B); }
.fs-text { font-size: 12px; color: var(--text-secondary); width: 240px; text-align: right; }

/* ===== 告警表 ===== */
.table-wrap { overflow-x: auto; }
.alert-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.alert-table th {
    text-align: left; font-weight: 600; color: rgba(160, 195, 245, 0.65);
    padding: 8px 10px; border-bottom: 1px solid rgba(140, 190, 255, 0.14); white-space: nowrap;
}
.alert-table td { padding: 9px 10px; border-bottom: 1px solid rgba(140, 190, 255, 0.07); color: rgba(225, 238, 255, 0.88); vertical-align: top; }
.alert-table tr:hover td { background: rgba(96, 160, 255, 0.06); }
.tag { display: inline-block; font-size: 11px; padding: 1px 8px; border-radius: 20px; border: 1px solid transparent; }
.tag.crit { color: #FFB0B0; background: rgba(255, 107, 107, 0.14); border-color: rgba(255, 107, 107, 0.35); }
.tag.warn { color: #FFD9AE; background: rgba(255, 178, 94, 0.14); border-color: rgba(255, 178, 94, 0.35); }
.tag.info { color: rgba(200, 225, 255, 0.75); background: rgba(140, 190, 255, 0.10); border-color: rgba(140, 190, 255, 0.22); }
.empty { text-align: center; color: rgba(160, 195, 245, 0.5); font-size: 13px; padding: 22px 0; }

/* ===== Footer ===== */
.site-footer {
    text-align: center; padding: 26px 24px 30px; font-size: 13px;
    color: rgba(130, 160, 210, 0.55); border-top: 1px solid rgba(96, 150, 235, 0.10); margin-top: 20px;
}
.site-footer a { color: rgba(130, 160, 210, 0.7); text-decoration: none; transition: color 0.25s; }
.site-footer a:hover { color: var(--accent); }
.footer-sep { margin: 0 8px; opacity: 0.5; }

/* ===== 响应式 ===== */
@media screen and (max-width: 900px) {
    .card-row { grid-template-columns: 1fr; }
    .fs-text { width: auto; text-align: left; }
    .fs-row { flex-wrap: wrap; }
    .fs-bar { min-width: 120px; }
}
@media screen and (max-width: 768px) {
    .site-header { padding: 0 16px; height: 64px; }
    .logo-badge { width: 40px; height: 40px; border-radius: 11px; }
    .logo-badge img { width: 32px; height: 32px; }
    .brand-text .tagline { display: none; }
    /* 窄屏：header 是 flex，nav 不给 min-width:0 会被挤出去（表现为最后几项被裁切） */
    .site-header nav { min-width: 0; flex: 1; display: flex; justify-content: flex-end; }
    .brand { flex-shrink: 0; }
    .header-nav { gap: 2px; -webkit-overflow-scrolling: touch; }
    .header-nav a { padding: 6px 10px; font-size: 13px; }
    .content { padding: 92px 16px 28px; }
    .page-head { align-items: flex-start; }
    .page-head h1 { font-size: 20px; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .kpi-card .num { font-size: 19px; }
    .chart { height: 220px; }
    .fs-text { width: 100%; }
}

@media screen and (max-width: 520px) {
    /* 极窄屏：藏掉品牌字标，把宽度让给 5 个导航项 */
    .brand-text { display: none; }
    .header-nav a { padding: 6px 8px; font-size: 12.5px; }
}