:root {
    --bg: #f4f0e6;
    --panel: #fffdf7;
    --line: #e5dcc9;
    --text: #24312f;
    --muted: #6f756d;
    --brand: #2f9f92;
    --brand-strong: #1d8378;
    --warning: #cf7045;
    --shadow: 0 16px 38px rgba(68, 53, 29, 0.1);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text);
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background:
        radial-gradient(circle at 12% 8%, rgba(47, 159, 146, 0.08), transparent 26%),
        radial-gradient(circle at 88% 3%, rgba(212, 134, 77, 0.08), transparent 24%),
        repeating-linear-gradient(0deg, rgba(47, 159, 146, 0.06) 0, rgba(47, 159, 146, 0.06) 1px, transparent 1px, transparent 30px),
        repeating-linear-gradient(90deg, rgba(47, 159, 146, 0.06) 0, rgba(47, 159, 146, 0.06) 1px, transparent 1px, transparent 30px),
        var(--bg);
    min-height: 100vh;
}

.monitor-page {
    max-width: 1240px;
    margin: 0 auto;
    padding: clamp(14px, 2vw, 22px);
}

.panel-shell {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.topbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    align-items: start;
    gap: clamp(12px, 1.6vw, 18px);
    padding: clamp(12px, 1.8vw, 18px);
    position: relative;
}

.topbar::before {
    content: "";
    position: absolute;
    left: 16px;
    top: 14px;
    bottom: 14px;
    width: 4px;
    border-radius: 999px;
    background: linear-gradient(180deg, #40afa3, #2a8d82);
    opacity: 0.65;
}

.title-group h1 {
    margin: 0 0 4px 0;
    padding-left: 14px;
    font-size: clamp(30px, 3.4vw, 40px);
    line-height: 1.12;
    letter-spacing: 0.01em;
}

.title-group p {
    margin: 0;
    padding-left: 14px;
    color: var(--muted);
    line-height: 1.5;
    font-size: 15px;
}

.title-note {
    margin-top: 10px;
    margin-left: 14px;
    display: inline-flex;
    align-items: center;
    border: 1px solid #d6cab6;
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
    color: #746f63;
    background: #faf5ec;
}

.auth-card {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 11px;
    background: linear-gradient(165deg, #fffefb 0%, #f7f3ea 100%);
    align-self: start;
}

.auth-btn {
    width: 100%;
    border: 0;
    border-radius: 12px;
    padding: 10px 14px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #42afa3, #248b80);
    cursor: pointer;
}

.auth-btn:hover {
    filter: brightness(1.03);
}

.auth-hint {
    margin: 7px 0;
    min-height: 20px;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.45;
}

.auth-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.mode-tag {
    display: inline-flex;
    align-items: center;
    padding: 5px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    background: #8c8376;
}

.mode-tag.live {
    background: var(--brand-strong);
}

.last-updated {
    color: var(--muted);
    font-size: 12px;
}

.control-bar {
    margin-top: 12px;
    padding: 9px 10px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.time-group {
    display: inline-flex;
    background: #f0ebdf;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 3px;
}

.chip {
    border: 0;
    background: transparent;
    color: var(--muted);
    border-radius: 9px;
    padding: 8px 12px;
    font-weight: 600;
    cursor: pointer;
}

.chip.is-active {
    background: #fff;
    color: var(--brand-strong);
    box-shadow: 0 8px 18px rgba(45, 112, 104, 0.15);
}

.refresh-btn {
    border: 0;
    border-radius: 11px;
    padding: 9px 14px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #42b1a4, #2b8f84);
    cursor: pointer;
}

.auto-check {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #faf6ed;
    color: var(--muted);
    font-size: 13px;
}

.error-text {
    min-height: 22px;
    margin: 8px 4px 0;
    color: #be5f3a;
    font-weight: 700;
    font-size: 13px;
}

.kpi-grid {
    margin-top: 8px;
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.kpi-card {
    padding: 14px;
}

.kpi-card h2 {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
}

.kpi-value {
    margin: 8px 0 4px;
    font-size: clamp(30px, 3.4vw, 38px);
    line-height: 1;
    font-weight: 800;
    color: var(--brand-strong);
}

.kpi-value.warning {
    color: var(--warning);
}

.kpi-card small {
    color: #878175;
    font-size: 12px;
}

.workspace-grid {
    margin-top: 12px;
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 1fr);
}

.trend-panel,
.node-panel {
    padding: 14px;
}

.panel-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.panel-head h2 {
    margin: 0;
    font-size: 21px;
}

.panel-head p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 12px;
}

.trend-stats {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 5px;
    font-size: 12px;
    color: var(--muted);
}

#trendChart {
    width: 100%;
    height: 330px;
    border-radius: 12px;
    border: 1px solid #e9dfce;
    background: linear-gradient(180deg, #fffefb 0%, #f8f3e8 100%);
}

.legend-row {
    margin-top: 8px;
    display: flex;
    gap: 16px;
    color: var(--muted);
    font-size: 12px;
}

.legend-dot {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    margin-right: 6px;
}

.legend-dot.cpu {
    background: #31af9f;
}

.legend-dot.memory {
    background: #d37a45;
}

.node-list {
    display: grid;
    gap: 10px;
    max-height: 620px;
    overflow: auto;
    padding-right: 2px;
}

.node-item {
    border: 1px solid #eadfce;
    border-radius: 14px;
    padding: 11px;
    background: #fff;
}

.node-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.node-name {
    margin: 0;
    font-size: 17px;
}

.node-meta {
    margin: 6px 0 0;
    font-size: 12px;
    color: var(--muted);
}

.node-status {
    border-radius: 999px;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
}

.node-status.online { background: #2ea77d; }
.node-status.warning { background: #d6834d; }
.node-status.offline { background: #8c8578; }

.meter-row {
    display: grid;
    grid-template-columns: 44px 1fr auto;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    font-size: 12px;
}

.meter {
    height: 8px;
    border-radius: 999px;
    background: #efe4d2;
    overflow: hidden;
}

.meter-fill {
    width: 0;
    height: 100%;
    border-radius: inherit;
    transition: width 0.35s ease;
}

.meter-fill.cpu { background: linear-gradient(90deg, #6fd9cd, #2ea293); }
.meter-fill.memory { background: linear-gradient(90deg, #f1af85, #d27b47); }
.meter-fill.disk { background: linear-gradient(90deg, #91b5d5, #5f7d9f); }

@media (max-width: 1080px) {
    .topbar {
        grid-template-columns: 1fr;
        gap: 10px;
        padding-left: 14px;
    }

    .topbar::before {
        display: none;
    }

    .title-group h1,
    .title-group p {
        padding-left: 0;
    }

    .title-note {
        margin-left: 0;
    }

    .kpi-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .workspace-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 680px) {
    .monitor-page {
        padding: 12px;
    }

    .topbar,
    .trend-panel,
    .node-panel,
    .kpi-card {
        padding: 12px;
    }

    .title-group h1 {
        font-size: 27px;
    }

    .control-bar {
        padding: 9px;
    }

    .time-group {
        width: 100%;
        justify-content: space-between;
    }

    .chip {
        flex: 1;
    }

    #trendChart {
        height: 280px;
    }
}