/* ---------- Chart runtime ---------- */
.chart { position: relative; width: 100%; height: var(--chart-h); min-width: 0; }
.chart svg { display: block; overflow: visible; }
.chart text { font-family: var(--ns-font-sans); font-size: 11px; }
.chart .c-mono { font-family: var(--ns-font-mono); }
.c-grid { stroke: var(--ns-line); stroke-dasharray: 2 3; }
.c-base { stroke: var(--ns-line-strong); }
.c-tick { fill: var(--ns-muted); }
.chart .c-val { fill: var(--ns-text); font-size: 10px; }
.chart .c-note { fill: var(--ns-muted); font-size: 10px; }
.c-note--data { fill: var(--ns-data); }
.chart .c-note--warn { fill: var(--ns-warn); font-size: 9px; }
.c-note--maint { fill: var(--ns-maint); }
.c-line { fill: none; stroke-width: 2; stroke-linejoin: round; }
.c-hover { fill: var(--ns-hover); opacity: 0; }
.c-hover.is-on { opacity: 1; }
.c-cursor { stroke: var(--ns-muted); opacity: 0; }
.c-cursor.is-on { opacity: 1; }
.c-dot { stroke: var(--ns-surface); stroke-width: 2; opacity: 0; }
.c-dot.is-on { opacity: 1; }
.chart--history { cursor: grab; touch-action: pan-y; }
.chart--history.is-dragging { cursor: grabbing; }

/* series (identical in both themes) */
.s1 { fill: var(--ns-series-1); }
.s2 { fill: var(--ns-series-2); }
.s3 { fill: var(--ns-series-3); }
.s4 { fill: var(--ns-series-4); }
.sn { fill: var(--ns-series-neutral); }
.s-warn { fill: var(--ns-warn); }
.s-danger { fill: var(--ns-danger); }
.s1-stroke { stroke: var(--ns-series-1); }
.s2-stroke { stroke: var(--ns-series-2); }
.s1-area { fill: var(--ns-series-1); fill-opacity: .10; }
.s2-area { fill: var(--ns-series-2); fill-opacity: .10; }
.ev-ok { fill: var(--ns-ok-line); }
.ev-warn { fill: var(--ns-warn-line); }
.ev-danger { fill: var(--ns-danger-line); }
.c-hatch-bg { fill: var(--ns-maint-soft); }
.c-hatch-line { stroke: var(--ns-maint-line); stroke-width: 1.5; }

/* waterfall */
.wf-total { fill: var(--ns-text-2); }
.wf-exp { fill: var(--ns-maint); }
.wf-in { fill: var(--ns-ok); }
.wf-out { fill: var(--ns-danger); }
.wf-nc { fill: none; stroke: var(--ns-data); stroke-dasharray: 4 3; }
.is-incomplete { fill-opacity: .45; stroke: var(--ns-warn); stroke-dasharray: 3 2; }

/* tank history */
.h-band { fill: var(--ns-fluid-oil); fill-opacity: .16; }
.h-line { stroke: #B7832A; }
.h-dot { fill: #B7832A; }
.h-invalid { stroke: var(--ns-data); stroke-width: 2; }
.h-refill { stroke: var(--ns-ok); stroke-dasharray: 3 3; }
.h-refill-dot { fill: var(--ns-ok); stroke: var(--ns-surface); stroke-width: 2; }
.h-refill-tag { fill: var(--ns-ok-soft); }
.chart .h-refill-text { fill: var(--ns-ok); font-size: 10px; font-weight: var(--ns-fw-medium); }
.h-rate { fill: var(--ns-series-1); fill-opacity: .7; }
.chart .h-rate-text { fill: var(--ns-series-1); font-size: 10px; }
.ref-cap { stroke: var(--ns-text-2); }
.ref-opmax { stroke: var(--ns-muted); stroke-dasharray: 6 3; }
.ref-target { stroke: var(--ns-ok); stroke-dasharray: 6 3; }
.ref-safety { stroke: var(--ns-warn); stroke-dasharray: 6 3; }
.ref-min { stroke: var(--ns-danger); stroke-dasharray: 6 3; }
.chart .ref-cap-text { fill: var(--ns-text-2); font-size: 10px; }
.chart .ref-opmax-text { fill: var(--ns-muted); font-size: 10px; }
.chart .ref-target-text { fill: var(--ns-ok); font-size: 10px; }
.chart .ref-safety-text { fill: var(--ns-warn); font-size: 10px; }
.chart .ref-min-text { fill: var(--ns-danger); font-size: 10px; }
.ms-valid { fill: var(--ns-ok-line); }
.ms-recovering { fill: var(--ns-warn-line); }
.ms-maint { fill: var(--ns-maint-line); }
.ms-invalid { fill: var(--ns-data-line); }

/* ---------- Legends ---------- */
.legend { display: flex; flex-wrap: wrap; align-items: center; gap: var(--ns-space-2) 14px; font-size: 11px; color: var(--ns-text-2); }
.legend__item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.legend__sw { display: inline-block; width: 8px; height: 8px; border-radius: 2px; background: var(--sw, var(--ns-series-neutral)); flex-shrink: 0; }
.legend__sw--s1 { background: var(--ns-series-1); }
.legend__sw--s2 { background: var(--ns-series-2); }
.legend__sw--sn { background: var(--ns-series-neutral); }
.legend__sw--warn { background: var(--ns-warn); }
.legend__sw--danger { background: var(--ns-danger); }
.legend__sw--ok { background: var(--ns-ok); }
.legend__sw--total { background: var(--ns-text-2); }
.legend__sw--ev-ok { width: 14px; height: 6px; background: var(--ns-ok-line); }
.legend__sw--ev-warn { width: 14px; height: 6px; background: var(--ns-warn-line); }
.legend__sw--ev-danger { width: 14px; height: 6px; background: var(--ns-danger-line); }
.legend__sw--ev-none { width: 12px; height: 10px; background: transparent; border: 1px solid var(--ns-line); }
.legend__sw--incomplete { width: 10px; height: 8px; background: transparent; border: 1px dashed var(--ns-warn); }
.legend__sw--line { width: 14px; height: 2px; border-radius: 0; background: #B7832A; }
.legend__sw--band { width: 14px; height: 8px; border-radius: 0; background: rgba(213, 162, 61, .25); }
.legend__sw--policy { width: 14px; height: 0; border-radius: 0; background: transparent; border-top: 1px dashed var(--ns-danger); }
.legend__sw--maint { width: 14px; height: 8px; border-radius: 0; background: var(--ns-maint-soft); border: 1px solid var(--ns-maint-line); }
.legend__sw--refill { width: 0; height: 10px; border-radius: 0; background: transparent; border-left: 1px dashed var(--ns-ok); }
.legend__sw--capacity { width: 10px; height: 8px; background: var(--ns-surface-2); border: 1px solid var(--ns-line-strong); }
.legend__sw--ms { width: 14px; height: 6px; border-radius: 0; }

/* ---------- HTML bar rows (comparisons, rankings) ---------- */
.hbars { display: flex; flex-direction: column; gap: 2px; }
.hbar { display: grid; grid-template-columns: minmax(96px, 180px) minmax(0, 1fr) minmax(84px, max-content); gap: 10px; align-items: center; min-height: 26px; }
.hbar--flag { grid-template-columns: minmax(96px, 170px) minmax(0, 1fr) minmax(84px, max-content) 10px; }
.hbar__label { font-size: 12px; color: var(--ns-text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hbar__track { position: relative; height: 10px; background: var(--ns-surface-2); }
.hbar__cap { position: absolute; inset: 0 auto 0 0; width: var(--cap); border: 1px solid var(--ns-line-strong); background: var(--ns-surface-2); }
.hbar__fill { position: absolute; inset: 0 auto 0 0; width: var(--w); background: var(--bar, var(--ns-series-1)); border-radius: 0 2px 2px 0; }
.hbar__cap + .hbar__fill { inset: 2px auto 2px 0; }
.hbar__value { font-family: var(--ns-font-mono); font-size: 12px; text-align: right; white-space: nowrap; }
.hbar__flag { width: 6px; height: 6px; border-radius: 3px; background: var(--ns-warn); }

.meter { display: inline-flex; flex-direction: column; align-items: flex-end; gap: 3px; }
.meter__track { position: relative; width: 100%; max-width: 120px; min-width: 72px; height: 4px; background: var(--ns-line); }
.meter__fill { position: absolute; inset: 0 auto 0 0; width: var(--w); background: var(--bar, var(--ns-primary)); }
.meter small { font-family: var(--ns-font-mono); font-size: 10px; color: var(--ns-muted); }
.meter--left { align-items: flex-start; }

.evidence-grid { display: flex; flex-direction: column; gap: 10px; }
.evidence-grid__row { display: grid; grid-template-columns: minmax(140px, 220px) minmax(0, 1fr); gap: 10px; align-items: center; }
.evidence-grid__cells { display: flex; gap: 2px; }
.evidence-grid__cell { flex: 1; height: 18px; border: 1px solid var(--ns-line); background: transparent; }
.evidence-grid__cell.is-ok { background: var(--ns-ok-line); }
.evidence-grid__cell.is-warn { background: var(--ns-warn-line); }
.evidence-grid__cell.is-danger { background: var(--ns-danger-line); }
.evidence-grid__axis { display: flex; justify-content: space-between; font-size: 11px; color: var(--ns-muted); }

.seg-bar { display: flex; height: 10px; border-radius: 2px; overflow: hidden; }
.seg-bar span { flex: var(--f); }

/* ---------- Tank mimic (TankAssetVisual) ---------- */
.mimic { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: var(--ns-space-6); border-radius: var(--ns-r-md); background: var(--ns-mimic-plate); }
.mimic--lg { --mimic-h: 360px; }
.mimic--md { --mimic-h: 240px; }
.mimic--sm { --mimic-h: 120px; padding: var(--ns-space-4); }
.mimic__scale { height: var(--mimic-h); width: auto; aspect-ratio: 46 / 170; }
.mimic__scale text { font-family: var(--ns-font-mono); font-size: 5.5px; fill: #66778A; }
.mimic__scale line { stroke: #98A5B4; }
.mimic__vessel { height: var(--mimic-h); width: auto; max-width: 100%; }
.mimic__vessel--vertical { aspect-ratio: 840 / 1200; }
.mimic__vessel--horizontal { aspect-ratio: 1254 / 760; }
.mimic__vessel--ibc { aspect-ratio: 930 / 1180; }
.mimic__liquid { mix-blend-mode: multiply; }

/* ---------- Operational map ---------- */
.map { display: flex; flex-direction: column; height: 100%; min-height: 0; background: var(--ns-surface); }
.map__head { display: flex; align-items: center; justify-content: space-between; gap: var(--ns-space-5); height: 44px; padding: 0 var(--ns-space-5); border-bottom: 1px solid var(--ns-line); color: var(--ns-muted); flex-shrink: 0; }
.map__titles { display: flex; flex-direction: column; min-width: 0; line-height: 1.2; }
.map__titles b { font-size: 12px; font-weight: var(--ns-fw-semibold); color: var(--ns-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.map__titles span { font-size: 11px; color: var(--ns-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.map__viewport { position: relative; flex: 1; min-height: 240px; overflow: hidden; background: var(--ns-map-ground); cursor: grab; touch-action: none; user-select: none; }
.map__viewport.is-dragging { cursor: grabbing; }
.map__tiles { position: absolute; inset: 0; filter: var(--ns-map-tile-filter); }
.map__tile { position: absolute; left: 0; top: 0; width: 256px; height: 256px; pointer-events: none; }
.map__markers { position: absolute; inset: 0; }
.map-pin { position: absolute; left: 0; top: 0; width: 0; height: 0; padding: 0; border: 0; background: transparent; }
.map-pin__glyph { position: absolute; left: -11px; top: -26px; }
.map-pin__glyph path { stroke: #FFFFFF; stroke-width: 2; }
.map-pin__glyph circle { fill: #FFFFFF; }
.map-pin--critical path { fill: var(--ns-danger); }
.map-pin--unknown path { fill: var(--ns-data); }
.map-pin--warning path { fill: var(--ns-warn); }
.map-pin--maintenance path { fill: var(--ns-maint); }
.map-pin--ok path { fill: var(--ns-ok); }
.map-pin--sm .map-pin__glyph { transform: scale(.8); transform-origin: 11px 26px; }
.map-pin:hover .map-pin__glyph, .map-pin:focus-visible .map-pin__glyph { transform: scale(1.2); transform-origin: 11px 26px; }
.map-pin__label { position: absolute; left: 12px; top: -22px; font-size: 11px; font-weight: var(--ns-fw-medium); color: var(--ns-text-2); white-space: nowrap; }
.map-dot { display: inline-block; width: 8px; height: 8px; border-radius: 4px; }
.map-dot--critical { background: var(--ns-danger); }
.map-dot--unknown { background: var(--ns-data); }
.map-dot--warning { background: var(--ns-warn); }
.map-dot--maintenance { background: var(--ns-maint); }
.map-dot--ok { background: var(--ns-ok); }
.map__hud, .map__legend { position: absolute; display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px var(--ns-space-4); padding: 5px 9px; border: 1px solid var(--ns-line); border-radius: var(--ns-r-sm); background: var(--ns-float-bg); }
.map__hud { top: 10px; left: 10px; max-width: calc(100% - 64px); }
.map__hud b { font-size: 12px; font-weight: var(--ns-fw-semibold); }
.map__hud span { font-size: 11px; color: var(--ns-muted); }
.map__legend { left: 10px; bottom: 10px; max-width: calc(100% - 20px); gap: var(--ns-space-2) var(--ns-space-5); }
.map__controls { position: absolute; top: 10px; right: 10px; display: flex; flex-direction: column; border: 1px solid var(--ns-line); border-radius: var(--ns-r-sm); background: var(--ns-surface); overflow: hidden; }
.map__controls button { width: 28px; height: 28px; border: 0; background: var(--ns-surface); font-family: var(--ns-font-mono); font-size: 14px; color: var(--ns-text-2); }
.map__controls button + button { border-top: 1px solid var(--ns-line); }
.map__controls button:hover { background: var(--ns-hover); }
.map__notice { position: absolute; right: 10px; bottom: 30px; padding: 4px 8px; border: 1px solid var(--ns-warn-line); border-radius: var(--ns-r-xs); background: var(--ns-warn-soft); font-size: 11px; }
.map__attr { position: absolute; right: 0; bottom: 0; padding: 2px 6px; background: var(--ns-float-bg); font-size: 10px; color: var(--ns-muted); }
.map--compact .map__legend { display: none; }

/* ---------- Circuit topology (v1) ---------- */
.topo { --topo-gap: 28px; --topo-line: var(--ns-faint); display: flex; align-items: center; padding: var(--ns-space-4) var(--ns-space-6) var(--ns-space-4) var(--ns-space-8); min-width: max-content; }
.topo__main { position: relative; padding-right: var(--topo-gap); }
.topo__main::after { content: ""; position: absolute; right: 0; top: 50%; width: var(--topo-gap); border-top: 1.5px solid var(--topo-line); }
.topo__branches { display: flex; flex-direction: column; }
.topo__branch { position: relative; display: flex; align-items: center; min-height: 120px; padding-left: var(--topo-gap); }
.topo__branch::before { content: ""; position: absolute; left: 0; top: 50%; width: var(--topo-gap); border-top: 1.5px solid var(--topo-line); }
.topo__branch::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; border-left: 1.5px solid var(--topo-line); }
.topo__branch:first-child::after { top: 50%; }
.topo__branch:last-child::after { bottom: 50%; }
.topo__branch:only-child::after { display: none; }
.topo__link { width: 36px; border-top: 1.5px solid var(--topo-line); flex-shrink: 0; }
.topo__equipment { display: flex; flex-direction: column; gap: var(--ns-space-4); }
.topo--compact .topo__branch { min-height: 76px; }
.topo__note { display: flex; align-items: center; gap: 6px; padding: 0 var(--ns-space-6) 14px; font-size: 11px; color: var(--ns-muted); }
.topo__note-line { width: 14px; border-top: 1.5px dashed var(--topo-line, var(--ns-faint)); }

.topo-card { display: flex; align-items: center; gap: var(--ns-space-5); width: 288px; padding: 10px var(--ns-space-5); border: 1px solid var(--ns-line); border-radius: var(--ns-r-md); background: var(--ns-surface); text-align: left; }
.topo-card:hover { border-color: var(--ns-line-strong); background: var(--ns-surface-2); }
.topo-card.is-repl { border-color: var(--ns-warn-line); }
.topo-card__copy { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.topo-card__name { display: flex; align-items: center; gap: 6px; min-width: 0; font-size: 12px; font-weight: var(--ns-fw-semibold); }
.topo-card__value { font-family: var(--ns-font-mono); font-size: 12px; }
.topo-card__value.is-muted { color: var(--ns-muted); }
.topo-card__sub { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; color: var(--ns-muted); }
.topo-card__sub.tone-warn { color: var(--ns-warn); }
.topo-card__sub.tone-data { color: var(--ns-data); }

.topo-vessel { position: relative; display: block; flex-shrink: 0; width: 30px; height: 44px; border: 1.5px solid var(--ns-faint); border-radius: 5px; background: var(--ns-surface-2); overflow: hidden; }
.topo-vessel.is-main { width: 38px; height: 56px; }
.topo-vessel--horizontal { width: 44px; height: 28px; border-radius: 14px; }
.topo-vessel--ibc { border-radius: 3px; }
.topo-vessel__fill { position: absolute; inset: auto 0 0 0; height: var(--topo-level); background: var(--topo-fluid); opacity: .82; }
.topo-vessel.is-maint .topo-vessel__fill { background: var(--ns-maint); }
.topo-vessel.is-nodata { background: repeating-linear-gradient(45deg, var(--ns-data-soft), var(--ns-data-soft) 3px, var(--ns-surface-2) 3px, var(--ns-surface-2) 6px); border-color: var(--ns-data-line); }

.topo-eq { display: flex; align-items: center; gap: 10px; width: 200px; min-height: 44px; padding: 0 10px; border: 1px solid var(--ns-line); border-radius: var(--ns-r-md); background: var(--ns-surface-2); }
.topo-eq__copy { display: flex; flex-direction: column; line-height: 1.2; }
.topo-eq__copy b { font-size: 12px; font-weight: var(--ns-fw-medium); }
.topo-eq__copy small { font-size: 11px; color: var(--ns-muted); }
.topo-eq__glyph { fill: var(--ns-surface-2); stroke: var(--ns-faint); }
.topo-eq__glyph path:first-of-type { fill: none; }
.topo-eq--empty { border-style: dashed; border-color: var(--ns-line-strong); background: transparent; }
.topo-eq--empty b { color: var(--ns-muted); }
.topo-eq--empty small { color: var(--ns-faint); }

.topo-vessel--standalone { width: 28px; height: 44px; }