:root {
    --bg: #f3f6f4;
    --panel: #ffffff;
    --panel-soft: #eef5f1;
    --text: #17211c;
    --muted: #66736c;
    --border: #d7e1dc;
    --accent: #097969;
    --accent-strong: #075f53;
    --ok: #168a4a;
    --warning: #b97300;
    --critical: #b42318;
    --offline: #b42318;
    --offline-neutral: #7d8790;
    --shadow: 0 18px 45px rgba(22, 40, 32, 0.10);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
}

.dashboard-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0;
}

.dashboard-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 22px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--accent-strong);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 0;
    font-size: clamp(2rem, 5vw, 3.4rem);
    line-height: 1.02;
}

.header-status {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 42px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    color: var(--accent-strong);
    font-size: 0.85rem;
    font-weight: 800;
    white-space: nowrap;
    box-shadow: 0 8px 20px rgba(22, 40, 32, 0.06);
}

.pulse-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--warning);
}

.pulse-dot.online {
    background: var(--ok);
}

.pulse-dot.offline {
    background: var(--offline-neutral);
}

.pulse-dot.warning {
    background: var(--warning);
}

.pulse-dot.critical {
    background: var(--critical);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.metric-card,
.system-panel,
.trends-panel {
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: var(--shadow);
}

.metric-card {
    min-height: 210px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.metric-card.offline {
    border-color: rgba(125, 135, 144, 0.45);
}

.metric-card.normal {
    border-color: rgba(22, 138, 74, 0.45);
}

.metric-card.warning {
    border-color: rgba(185, 115, 0, 0.5);
}

.metric-card.critical {
    border-color: rgba(180, 35, 24, 0.55);
}

.metric-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.metric-label {
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 700;
}

.metric-state {
    min-width: 74px;
    padding: 5px 8px;
    border-radius: 8px;
    background: var(--panel-soft);
    color: var(--warning);
    font-size: 0.72rem;
    font-weight: 800;
    text-align: center;
}

.metric-state.online {
    color: var(--ok);
}

.metric-state.normal {
    color: var(--ok);
}

.metric-state.warning {
    color: var(--warning);
}

.metric-state.critical {
    color: var(--critical);
}

.metric-state.offline {
    color: var(--offline-neutral);
}

.metric-reading {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin: 26px 0 18px;
    min-width: 0;
}

.metric-reading span:first-child {
    overflow-wrap: anywhere;
}

.metric-reading span:first-child {
    font-size: clamp(2.35rem, 6vw, 4.3rem);
    font-weight: 800;
    line-height: 0.95;
}

.metric-unit {
    color: var(--muted);
    font-size: 1rem;
    font-weight: 700;
}

.metric-source {
    margin: 0;
    color: var(--muted);
    font-size: 0.82rem;
}

.system-panel,
.alarm-panel,
.trends-panel {
    margin-top: 18px;
    padding: 20px;
}

.alarm-panel {
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: var(--shadow);
}

.panel-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.panel-heading h2 {
    margin-bottom: 0;
    font-size: 1.2rem;
}

.panel-heading p {
    margin-bottom: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.status-item {
    min-height: 78px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fbfdfc;
}

.status-label {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
}

.status-item strong {
    font-size: 1.02rem;
}

.sensor-health {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    padding: 0;
    margin: 16px 0 0;
    list-style: none;
}

.sensor-health li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px;
    border-radius: 8px;
    background: var(--panel-soft);
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 700;
}

.sensor-health .online {
    color: var(--ok);
}

.sensor-health .offline {
    color: var(--offline-neutral);
}

.sensor-health .warning {
    color: var(--warning);
}

.sensor-health .critical {
    color: var(--critical);
}

.alarm-list {
    display: grid;
    gap: 10px;
    padding: 0;
    margin: 16px 0 0;
    list-style: none;
}

.alarm-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 12px 14px;
    border-radius: 8px;
    background: var(--panel-soft);
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.alarm-list li.warning {
    border-left: 4px solid var(--warning);
}

.alarm-list li.critical {
    border-left: 4px solid var(--critical);
}

.alarm-list li.offline {
    border-left: 4px solid var(--offline-neutral);
}

.alarm-empty {
    justify-content: center;
    text-align: center;
}

.risk-normal {
    color: var(--ok);
}

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

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

.risk-offline {
    color: var(--offline-neutral);
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.chart-card {
    min-width: 0;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fbfdfc;
}

.chart-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.chart-heading h3 {
    margin: 0;
    font-size: 1rem;
}

.chart-heading span {
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
}

.chart-frame {
    position: relative;
    min-height: 260px;
}

.chart-frame canvas {
    width: 100%;
    min-height: 260px;
}

.chart-empty {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    margin: 0;
    border: 1px dashed var(--border);
    border-radius: 8px;
    background: var(--panel-soft);
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 700;
    text-align: center;
}

.chart-frame.empty canvas {
    display: none;
}

.chart-frame.empty .chart-empty {
    display: flex;
}

@media (max-width: 980px) {
    .metrics-grid,
    .status-grid,
    .sensor-health {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .dashboard-shell {
        width: min(100% - 24px, 1180px);
        padding: 18px 0;
    }

    .dashboard-header,
    .panel-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .header-status {
        width: 100%;
        justify-content: center;
    }

    .metrics-grid,
    .status-grid,
    .sensor-health,
    .charts-grid {
        grid-template-columns: 1fr;
    }

    .metric-card {
        min-height: 178px;
    }

    .chart-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .chart-heading span {
        white-space: normal;
    }
}

.chart-filters {
    display: flex;
    gap: 10px;
    margin: 18px 0;
    flex-wrap: wrap;
}

.chart-filter {
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    cursor: pointer;
    font-weight: 700;
}

.chart-filter.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}