.page-volumetric-advection-field {
    --va-accent: #78f6e7;
    --va-lime: #a8ffbf;
    --va-amber: #ffd98a;
    --va-blue: #79b9ff;
    --va-coral: #ff9a87;
    --va-dim: #6b8b85;
    --va-canvas: #030708;
}

.page-volumetric-advection-field .lab-hero {
    margin-bottom: clamp(1rem, 2vw, 1.6rem);
}

.page-volumetric-advection-field .lab-hero h1 {
    max-width: 25ch;
    font-size: clamp(2.05rem, 4.2vw, 3.5rem);
    line-height: 1;
}

.page-volumetric-advection-field .lab-status-panel span {
    max-width: 24ch;
    overflow-wrap: anywhere;
}

.volumetric-app,
.volumetric-app *,
.volumetric-lower-grid,
.volumetric-lower-grid * {
    box-sizing: border-box;
}

.volumetric-app {
    display: grid;
    gap: clamp(1rem, 2vw, 1.6rem);
    width: min(var(--max), calc(100% - 32px));
    max-width: 1180px;
    min-width: 0;
    margin-inline: auto;
    overflow-x: clip;
}

.volumetric-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.85fr);
    gap: clamp(1rem, 2vw, 1.5rem);
    align-items: start;
    min-width: 0;
}

.volumetric-stage,
.volumetric-controls {
    min-width: 0;
    padding: clamp(0.85rem, 2vw, 1.25rem);
}

.volumetric-stage {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 18% 18%, rgba(120, 246, 231, 0.1), transparent 31%),
        radial-gradient(circle at 82% 76%, rgba(255, 217, 138, 0.08), transparent 34%);
}

.volumetric-stage__head,
.volumetric-controls .control-heading,
.volumetric-control-group .section-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.volumetric-stage__head h2,
.volumetric-controls .control-heading h2,
.volumetric-notes h2 {
    margin: 0.2rem 0 0;
    color: var(--text);
    line-height: 1.18;
}

.volumetric-stage__head h2 {
    font-size: clamp(1.25rem, 2.4vw, 1.8rem);
}

.volumetric-stage__head p:not(.eyebrow) {
    max-width: 68ch;
    margin: 0.55rem 0 0;
    color: var(--muted);
    line-height: 1.55;
}

.volumetric-state {
    flex: 0 0 auto;
    min-width: 8rem;
    padding: 0.52rem 0.68rem;
    border: 1px solid var(--line-strong);
    color: var(--va-accent);
    background: rgba(120, 246, 231, 0.055);
    font-size: 0.74rem;
    letter-spacing: 0.1em;
    text-align: center;
    overflow-wrap: anywhere;
}

.volumetric-state[data-state="running"] {
    border-color: rgba(168, 255, 191, 0.66);
    color: var(--va-lime);
    box-shadow: 0 0 24px rgba(168, 255, 191, 0.14);
}

.volumetric-state[data-state="paused"] {
    border-color: rgba(255, 217, 138, 0.66);
    color: var(--va-amber);
}

.volumetric-state[data-state="model-error"] {
    border-color: rgba(255, 141, 154, 0.72);
    color: var(--va-coral);
    background: rgba(255, 141, 154, 0.08);
}

.volumetric-canvas-frame {
    width: 100%;
    height: clamp(430px, 42vw, 560px);
    margin-top: 1rem;
    overflow: hidden;
    border: 1px solid rgba(120, 246, 231, 0.24);
    background: var(--va-canvas);
}

#volumetricCanvas {
    display: block;
    width: 100%;
    height: 100%;
    max-width: 100%;
    outline: none;
    background: var(--va-canvas);
    touch-action: none;
}

#volumetricCanvas:focus-visible {
    box-shadow: inset 0 0 0 2px var(--va-accent), 0 0 0 2px rgba(120, 246, 231, 0.26);
}

.volumetric-canvas-help,
.volumetric-control-help {
    color: var(--va-dim);
    line-height: 1.5;
}

.volumetric-canvas-help {
    margin: 0.62rem 0 0;
    font-size: 0.76rem;
}

.volumetric-live {
    min-height: 2.5rem;
    margin: 0.75rem 0 0;
    padding: 0.62rem 0.75rem;
    border-left: 2px solid var(--va-accent);
    color: var(--muted);
    background: rgba(120, 246, 231, 0.045);
    font-size: 0.78rem;
    line-height: 1.45;
}

.volumetric-metrics,
.volumetric-readouts {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.58rem;
    margin: 0.85rem 0 0;
}

.volumetric-metrics div,
.volumetric-readouts div {
    min-width: 0;
    padding: 0.7rem;
    border: 1px solid var(--line);
    background: rgba(3, 8, 9, 0.58);
}

.volumetric-metrics dt,
.volumetric-readouts dt {
    color: var(--va-dim);
    font-size: 0.66rem;
    letter-spacing: 0.06em;
    line-height: 1.35;
    text-transform: uppercase;
}

.volumetric-metrics dd,
.volumetric-readouts dd {
    margin: 0.32rem 0 0;
    color: var(--text);
    font: 500 clamp(0.8rem, 1.65vw, 1rem)/1.25 ui-monospace, SFMono-Regular, Consolas, monospace;
    overflow-wrap: anywhere;
}

.volumetric-controls {
    position: sticky;
    top: 82px;
    display: grid;
    gap: 1rem;
    max-height: calc(100vh - 94px);
    overflow-y: auto;
    overscroll-behavior-y: contain;
    scrollbar-gutter: stable;
}

.volumetric-controls .control-heading h2 {
    font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.volumetric-controls h3 {
    margin: 0;
    color: var(--text);
    font-size: 0.78rem;
    letter-spacing: 0.09em;
}

.volumetric-control-group,
.volumetric-range-stack,
.volumetric-preset-stack,
.volumetric-lens-stack,
.volumetric-shortcut-note {
    min-width: 0;
    padding: 0.85rem;
    border: 1px solid var(--line);
    background: rgba(3, 8, 9, 0.45);
}

.volumetric-control-group,
.volumetric-range-stack,
.volumetric-preset-stack,
.volumetric-lens-stack {
    display: grid;
    gap: 0.65rem;
}

.volumetric-controls .section-heading span,
.volumetric-controls .control-readout,
.volumetric-controls output {
    min-width: 0;
    color: var(--va-lime);
    font: 500 0.72rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
    letter-spacing: 0.08em;
    text-align: right;
    overflow-wrap: anywhere;
}

.volumetric-action-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.55rem;
}

.volumetric-app button {
    min-width: 0;
    min-height: 44px;
    padding: 0.58rem 0.7rem;
    border: 1px solid var(--line-strong);
    border-radius: 0;
    color: var(--text);
    background: rgba(120, 246, 231, 0.055);
    font: inherit;
    line-height: 1.25;
    cursor: pointer;
    overflow-wrap: anywhere;
    touch-action: manipulation;
}

.volumetric-app button:hover,
.volumetric-app button:focus-visible {
    border-color: var(--va-accent);
    outline: none;
    box-shadow: 0 0 0 2px rgba(120, 246, 231, 0.18);
}

.volumetric-app button:disabled,
.volumetric-app input:disabled {
    cursor: not-allowed;
    opacity: 0.58;
}

.volumetric-app .primary-control {
    border-color: rgba(120, 246, 231, 0.58);
    color: var(--va-accent);
    background: rgba(120, 246, 231, 0.1);
}

.volumetric-app .is-active {
    border-color: rgba(168, 255, 191, 0.78);
    color: var(--va-lime);
    background: rgba(168, 255, 191, 0.1);
}

.volumetric-range-stack {
    gap: 0.78rem;
}

.volumetric-range-stack label {
    display: grid;
    gap: 0.42rem;
    color: var(--muted);
    font-size: 0.78rem;
}

.volumetric-range-stack label > span {
    display: flex;
    justify-content: space-between;
    gap: 0.8rem;
    overflow-wrap: anywhere;
}

.volumetric-range-stack output {
    white-space: nowrap;
}

.volumetric-range-stack input[type="range"] {
    width: 100%;
    min-height: 44px;
    accent-color: var(--va-accent);
}

.volumetric-range-stack input[type="range"]:focus-visible {
    outline: 2px solid var(--va-accent);
    outline-offset: 3px;
}

.volumetric-control-help {
    margin: 0;
    font-size: 0.74rem;
}

.volumetric-source-status {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    color: var(--muted);
    font: 500 0.72rem/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.volumetric-source-status strong {
    color: var(--va-amber);
    overflow-wrap: anywhere;
    text-align: right;
}

.volumetric-preset-row,
.volumetric-lens-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.45rem;
}

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

.volumetric-shortcut-note p {
    margin: 0.62rem 0 0;
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.6;
}

.volumetric-shortcut-note kbd {
    display: inline-block;
    min-width: 1.5em;
    padding: 0.08rem 0.32rem;
    border: 1px solid var(--line-strong);
    color: var(--va-accent);
    background: rgba(120, 246, 231, 0.06);
    font: inherit;
    text-align: center;
}

.volumetric-readouts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 0;
}

.volumetric-notes {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(0.8rem, 1.8vw, 1.2rem);
}

.volumetric-notes article,
.volumetric-lower-grid > * {
    min-width: 0;
    padding: clamp(0.9rem, 2vw, 1.2rem);
}

.volumetric-notes h2 {
    font-size: clamp(1rem, 1.8vw, 1.24rem);
}

.volumetric-notes p,
.volumetric-notes li {
    color: var(--muted);
    line-height: 1.62;
}

.volumetric-notes ul {
    margin: 0.65rem 0 0;
    padding-left: 1.15rem;
}

.volumetric-notes strong {
    color: var(--text);
}

.volumetric-notes code {
    color: var(--va-lime);
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    overflow-wrap: anywhere;
}

.volumetric-formula-card code {
    color: var(--va-accent);
}

.volumetric-lower-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
    gap: clamp(0.8rem, 1.8vw, 1.2rem);
    width: min(var(--max), calc(100% - 32px));
    max-width: 1180px;
    min-width: 0;
    margin: clamp(1rem, 2vw, 1.6rem) auto 0;
}

.page-volumetric-advection-field .related-lab-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.volumetric-fallback {
    display: none;
    margin-top: 1rem;
    padding: 1rem;
    border: 1px solid rgba(255, 154, 135, 0.56);
    color: var(--va-coral);
    background: rgba(255, 154, 135, 0.08);
}

.volumetric-fallback:not([hidden]) {
    display: block;
}

.page-volumetric-advection-field .observation-policy,
.page-volumetric-advection-field .related-labs {
    height: 100%;
}

@media (max-width: 900px) {
    .volumetric-layout {
        grid-template-columns: 1fr;
    }

    .volumetric-controls {
        position: static;
        max-height: none;
        overflow-y: visible;
        overscroll-behavior-y: auto;
        scrollbar-gutter: auto;
    }

    .volumetric-notes {
        grid-template-columns: 1fr 1fr;
    }

    .volumetric-notes .volumetric-formula-card {
        grid-column: 1 / -1;
    }
}

@media (max-width: 620px) {
    .volumetric-app,
    .volumetric-lower-grid {
        width: min(100% - 22px, 1180px);
    }

    .page-volumetric-advection-field .lab-hero {
        gap: 0.7rem;
        padding: 0.85rem 0 0.7rem;
    }

    .page-volumetric-advection-field .lab-hero h1 {
        font-size: clamp(1.6rem, 8.8vw, 2.3rem);
        overflow-wrap: anywhere;
    }

    .volumetric-stage,
    .volumetric-controls {
        padding: 0.78rem;
    }

    .volumetric-stage__head,
    .volumetric-controls .control-heading {
        display: grid;
    }

    .volumetric-state {
        width: 100%;
        min-width: 0;
        text-align: left;
    }

    .volumetric-canvas-frame {
        height: clamp(500px, 142vw, 610px);
        margin-top: 0.75rem;
    }

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

    .volumetric-notes,
    .volumetric-lower-grid {
        grid-template-columns: 1fr;
    }

    .volumetric-notes .volumetric-formula-card {
        grid-column: auto;
    }

    .page-volumetric-advection-field .related-lab-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 420px) {
    .volumetric-action-grid,
    .volumetric-preset-row,
    .volumetric-lens-row {
        grid-template-columns: 1fr;
    }

    .volumetric-metrics,
    .volumetric-readouts {
        gap: 0.45rem;
    }

    .volumetric-metrics div,
    .volumetric-readouts div {
        padding: 0.58rem;
    }

    .volumetric-range-stack label > span {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.2rem;
    }

    .volumetric-range-stack output {
        white-space: normal;
    }
}

@media (prefers-reduced-motion: reduce) {
    .volumetric-app,
    .volumetric-app * {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
    }
}