@layer components {
    .casey-foundation-page {
        display: grid;
        gap: var(--casey-space-6);
        container: foundation-page / inline-size;
    }

    .casey-foundation-section {
        display: grid;
        gap: var(--casey-space-4);
        min-width: 0;
        padding: var(--casey-space-6);
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-panel);
        background: var(--casey-surface);
    }

    .casey-foundation-section > header {
        display: grid;
        gap: var(--casey-space-1);
    }

    .casey-foundation-section > header h2,
    .casey-foundation-section > header p {
        margin: 0;
    }

    .casey-foundation-section > header p {
        color: var(--casey-text-secondary);
    }

    .casey-page-heading {
        position: relative;
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: start;
        gap: var(--casey-space-4);
        min-width: 0;
    }

    .casey-name-with-usage,
    .casey-table td:first-child .casey-name-with-usage {
        display: inline-flex;
        align-items: center;
        gap: .45rem;
        min-width: 0;
    }

    .casey-inline-usage {
        color: var(--casey-text-muted);
        font-size: .75rem;
        font-variant-numeric: tabular-nums;
        white-space: nowrap;
    }

    .casey-page-heading.casey-page-heading-has-leading {
        grid-template-columns: auto minmax(0, 1fr) auto;
    }

    .casey-page-heading.casey-page-heading-no-actions {
        grid-template-columns: minmax(0, 1fr);
    }

    .casey-page-heading.casey-page-heading-has-leading.casey-page-heading-no-actions {
        grid-template-columns: auto minmax(0, 1fr);
    }

    .casey-page-heading-main {
        display: grid;
        gap: var(--casey-space-1);
        min-width: 0;
    }

    .casey-page-heading-title,
    .casey-page-heading-purpose {
        margin: 0;
    }

    .casey-page-heading-title-row {
        display: flex;
        min-width: 0;
        align-items: center;
        flex-wrap: wrap;
        gap: var(--casey-space-2);
    }

    .casey-page-heading-title {
        font-size: var(--casey-font-title);
        line-height: var(--casey-line-title);
    }

    .casey-page-heading.casey-admin-page-heading .casey-page-heading-title {
        color: var(--casey-text);
        font-size: 1.875rem;
        font-weight: 600;
        letter-spacing: -.02em;
        line-height: 2.375rem;
    }

    .casey-page-heading-purpose {
        max-width: 72ch;
        color: var(--casey-text-secondary);
    }

    .casey-page-heading-badges,
    .casey-page-heading-meta {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: var(--casey-space-2);
    }

    .casey-page-heading-meta {
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-meta);
    }

    .casey-admin-page-summary {
        display: flex;
        flex-wrap: wrap;
        gap: .3rem .55rem;
        align-items: center;
        color: var(--casey-text-secondary);
        font-size: .8125rem;
        font-weight: 400;
        line-height: 1.25rem;
    }

    .casey-admin-page-summary strong {
        color: var(--casey-text);
        font-weight: 600;
    }

    .casey-admin-page-summary [aria-hidden="true"] {
        color: var(--casey-border-strong);
    }

    .casey-page-heading-actions,
    .casey-action-group {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: flex-end;
        gap: var(--casey-space-2);
    }

    .casey-page-heading-actions {
        align-self: center;
    }

    .casey-page-heading-actions .btn {
        min-height: 2.25rem;
    }

    .casey-refresh-control-group {
        display: grid;
        justify-items: end;
        gap: 0.3rem;
    }

    .casey-refresh-status {
        margin: 0;
        color: var(--casey-text-secondary);
        font-size: 0.75rem;
        line-height: 1;
        text-align: right;
    }

    .casey-summary-line {
        margin: 0;
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-meta);
        font-variant-numeric: tabular-nums;
        line-height: 1.35;
    }

    .casey-summary-line strong {
        color: var(--casey-text);
        font-weight: 650;
    }

    .casey-directory-panel {
        min-width: 0;
        padding: 0;
        overflow: hidden;
    }

    .casey-directory-panel-header {
        display: flex;
        min-height: 3.5rem;
        align-items: center;
        justify-content: space-between;
        gap: var(--casey-space-4);
        padding: 0.65rem 1rem;
        border-bottom: 1px solid var(--casey-border);
    }

    .casey-directory-panel-header h2,
    .casey-directory-panel-header p {
        margin: 0;
    }

    .casey-directory-panel-header h2 {
        font-size: 0.975rem;
        font-weight: 650;
    }

    .casey-directory-panel-header p,
    .casey-directory-result {
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-meta);
    }

    .casey-directory-panel-header p {
        margin-top: 0.12rem;
    }

    .casey-directory-panel-meta {
        display: flex;
        align-items: center;
        gap: var(--casey-space-2);
        white-space: nowrap;
    }

    .casey-directory-grid-frame {
        min-width: 0;
        max-width: 100%;
        border: 1px solid var(--casey-border);
        border-radius: .6rem;
        background: var(--casey-panel-solid);
        overflow-x: auto;
        overflow-y: visible;
    }

    .casey-directory-grid-table {
        width: 100%;
        table-layout: fixed;
        margin: 0;
    }

    .casey-directory-grid-table thead {
        position: sticky;
        z-index: 2;
        top: 0;
    }

    .casey-directory-grid-table th {
        height: var(--casey-table-header-height);
        padding: 0 12px;
        vertical-align: middle;
        background: var(--casey-table-head);
        box-shadow: inset 0 -1px 0 var(--casey-border);
        color: var(--casey-text-secondary);
        font-size: .75rem;
        font-weight: 500;
        line-height: 1rem;
        white-space: nowrap;
    }

    .casey-directory-grid-table td {
        padding: 10px 12px;
        color: var(--casey-text);
        font-size: .8125rem;
        font-weight: 400;
        line-height: 1.25rem;
    }

    .casey-directory-grid-table tbody tr {
        height: var(--casey-table-row-height);
    }

    .casey-directory-grid-table tbody tr:focus-visible {
        position: relative;
        z-index: 1;
        outline: 2px solid var(--casey-focus);
        outline-offset: -2px;
    }

    .casey-data-table-wrap {
        max-width: 100%;
        overflow-x: auto;
    }

    .casey-data-table {
        margin: 0;
    }

    .casey-data-table thead th {
        height: 2.5rem;
        padding: 0.5rem 0.75rem;
        border-bottom-color: var(--casey-border);
        background: var(--casey-table-head);
        color: var(--casey-text-secondary);
        font-size: 0.75rem;
        font-weight: 500;
        letter-spacing: 0;
        text-transform: none;
        white-space: nowrap;
    }

    .casey-data-table tbody tr {
        height: 3.75rem;
    }

    .casey-data-table tbody td {
        padding: 0.55rem 0.75rem;
        border-color: color-mix(in srgb, var(--casey-border) 76%, transparent);
    }

    .casey-data-table tbody tr:hover {
        background: var(--casey-table-hover-bg);
    }

    .casey-empty-compact {
        display: grid;
        min-height: 11.25rem;
        place-content: center;
        gap: 0.35rem;
        padding: 1.5rem;
        text-align: center;
    }

    .casey-empty-compact h3,
    .casey-empty-compact p {
        margin: 0;
    }

    .casey-empty-compact h3 {
        font-size: 1rem;
    }

    .casey-empty-compact p {
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-meta);
    }

    .casey-empty-compact .casey-action-group {
        margin-top: 0.5rem;
        justify-content: center;
    }

    .casey-page-heading-back {
        display: grid;
        width: 2.5rem;
        height: 3.75rem;
        padding: 0;
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-control);
        place-items: center;
        background: var(--casey-surface);
        color: var(--casey-text-secondary);
    }

    .casey-page-heading-back:hover,
    .casey-page-heading-back:focus-visible {
        border-color: var(--casey-teal);
        color: var(--casey-blue);
    }

    .casey-page-heading-back span {
        width: 1rem;
        height: 1rem;
        background: currentColor;
        -webkit-mask: url("/icons/fontawesome/regular/arrow-left.svg") center / contain no-repeat;
        mask: url("/icons/fontawesome/regular/arrow-left.svg") center / contain no-repeat;
    }

    .casey-project-page > .casey-page-heading {
        flex: 0 0 auto;
    }

    .casey-case-layout > .casey-page-heading.casey-case-detail-header {
        grid-area: case-header;
        grid-column: auto;
        gap: var(--casey-space-3);
        margin: 0;
        padding: var(--casey-space-4);
        border: 1px solid var(--casey-border);
        border-bottom: 0;
        border-radius: var(--casey-radius-panel) var(--casey-radius-panel) 0 0;
        background: var(--casey-surface);
    }

    .casey-case-detail-header .casey-page-heading-title {
        font-size: clamp(1.55rem, 2.1vw, 1.9rem);
        line-height: 1.18;
    }

    .casey-case-detail-header .casey-page-heading-main {
        gap: 0.3rem;
    }

    .casey-case-detail-header .casey-page-heading-meta {
        font-size: 0.78rem;
    }

    .casey-case-detail-header .casey-page-heading-actions {
        align-self: start;
    }

    .casey-case-detail-header .casey-case-back-button {
        width: 2rem;
        height: 2rem;
        border-color: transparent;
        background: transparent;
        box-shadow: none;
    }

    @media (max-width: 62rem) {
        .casey-page-heading {
            grid-template-columns: minmax(0, 1fr);
        }

        .casey-page-heading.casey-page-heading-has-leading {
            grid-template-columns: auto minmax(0, 1fr);
        }

        .casey-page-heading-actions {
            grid-column: 1;
            width: 100%;
            justify-content: flex-end;
        }

        .casey-page-heading-actions > .casey-action-group {
            width: 100%;
            justify-content: flex-end;
        }

        .casey-refresh-status {
            display: none;
        }

        .casey-page-heading-has-leading .casey-page-heading-actions {
            grid-column: 2;
        }
    }

    @media (max-width: 45rem) {
        .casey-case-layout > .casey-page-heading.casey-case-detail-header {
            border: 1px solid var(--casey-border);
            border-radius: var(--casey-radius-panel);
        }
    }

    .casey-control {
        min-height: var(--casey-control-height);
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-control);
        background: var(--casey-input-bg);
        color: var(--casey-text);
    }

    .casey-theme-picker {
        position: relative;
        display: inline-flex;
        align-items: center;
    }

    .casey-theme-cycle-button {
        position: relative;
        display: inline-flex;
        width: 2.25rem;
        height: 2.25rem;
        align-items: center;
        justify-content: center;
        padding: 0;
        border: 1px solid transparent;
        border-radius: 8px;
        background: transparent;
        color: var(--casey-text-secondary);
        cursor: pointer;
    }

    .casey-theme-cycle-button:hover {
        background: var(--casey-surface-2);
        color: var(--casey-text);
    }

    .casey-theme-cycle-button:focus-visible {
        outline: 2px solid var(--casey-focus);
        outline-offset: 2px;
    }

    .casey-theme-icon-stage {
        position: absolute;
        inset: 0;
        display: grid;
        place-items: center;
    }

    .casey-theme-cycle-icon {
        position: absolute;
        width: 1.2rem;
        height: 1.2rem;
        opacity: 0;
        transform: rotate(-30deg) scale(0.9);
        transition:
            opacity 80ms ease,
            transform 170ms ease,
            visibility 0s linear 170ms;
        visibility: hidden;
    }

    :root[data-casey-theme-preference="light"] [data-casey-theme-icon="light"],
    :root[data-casey-theme-preference="dark"] [data-casey-theme-icon="dark"],
    :root[data-casey-theme-preference="system"] [data-casey-theme-icon="system"] {
        opacity: 1;
        transform: rotate(0) scale(1);
        transition:
            opacity 90ms ease 65ms,
            transform 170ms ease,
            visibility 0s;
        visibility: visible;
    }

    .casey-theme-tooltip {
        position: absolute;
        z-index: 40;
        top: calc(100% + 0.55rem);
        right: 0;
        width: max-content;
        max-width: min(20rem, calc(100vw - 2rem));
        padding: 0.4rem 0.55rem;
        border: 1px solid var(--casey-border);
        border-radius: 6px;
        background: var(--casey-panel-solid);
        box-shadow: 0 0.7rem 1.8rem rgb(0 0 0 / 18%);
        color: var(--casey-text);
        font-size: var(--casey-font-meta);
        font-weight: 500;
        line-height: 1.35;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-0.15rem);
        transition:
            opacity 100ms ease,
            transform 100ms ease;
    }

    .casey-theme-cycle-button:hover + .casey-theme-tooltip,
    .casey-theme-cycle-button:focus-visible + .casey-theme-tooltip {
        opacity: 1;
        transform: translateY(0);
        transition-delay: 450ms;
    }

    @media (prefers-reduced-motion: reduce) {
        .casey-theme-cycle-icon,
        .casey-theme-tooltip {
            transition: none;
        }
    }

    .casey-token-grid,
    .casey-state-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
        gap: var(--casey-space-3);
    }

    .casey-token-swatch {
        display: grid;
        min-height: 6rem;
        align-content: end;
        gap: var(--casey-space-1);
        padding: var(--casey-space-3);
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-control);
        background: var(--swatch, var(--casey-surface-raised));
        color: var(--swatch-text, var(--casey-text));
    }

    .casey-token-swatch strong,
    .casey-token-swatch span {
        padding: 0.1rem 0.3rem;
        border-radius: 0.25rem;
        background: color-mix(in srgb, var(--casey-surface) 86%, transparent);
        color: var(--casey-text);
        justify-self: start;
    }

    .casey-type-samples {
        display: grid;
        gap: var(--casey-space-4);
    }

    .casey-type-samples > * {
        margin: 0;
    }

    .casey-type-section-heading {
        font-size: var(--casey-font-heading);
        font-weight: 700;
        line-height: var(--casey-line-heading);
    }

    .casey-code-sample {
        max-width: 100%;
        margin: 0;
        padding: var(--casey-space-4);
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-control);
        background: var(--casey-surface-raised);
        color: var(--casey-text);
        white-space: pre-wrap;
    }

    .casey-showcase-tabs {
        display: flex;
        gap: var(--casey-space-1);
        padding-bottom: 1px;
        overflow-x: auto;
        border-bottom: 1px solid var(--casey-border);
    }

    .casey-showcase-tabs [role="tab"] {
        min-height: var(--casey-target-size);
        padding: 0 var(--casey-space-3);
        border: 0;
        border-bottom: 3px solid transparent;
        background: transparent;
        color: var(--casey-text-secondary);
        font-weight: 700;
        white-space: nowrap;
    }

    .casey-showcase-tabs [role="tab"][aria-selected="true"] {
        border-bottom-color: var(--casey-teal);
        color: var(--casey-text);
    }

    .casey-chip-set {
        display: flex;
        flex-wrap: wrap;
        gap: var(--casey-space-2);
    }

    .casey-chip {
        display: inline-flex;
        min-height: 1.75rem;
        align-items: center;
        gap: var(--casey-space-1);
        padding: 0.2rem 0.6rem;
        border: 1px solid color-mix(in srgb, var(--chip-colour, var(--casey-blue)) 48%, var(--casey-border));
        border-radius: 999px;
        background: color-mix(in srgb, var(--chip-colour, var(--casey-blue)) 12%, var(--casey-surface));
        color: var(--casey-text);
        font-size: var(--casey-font-chip);
        font-weight: var(--casey-font-weight-pill);
        line-height: var(--casey-line-chip);
    }

    .casey-chip::before {
        width: 0.5rem;
        height: 0.5rem;
        border-radius: 50%;
        background: var(--chip-colour, var(--casey-blue));
        content: "";
    }

    .casey-chip-success {
        --chip-colour: var(--casey-success);
    }

    .casey-chip-warning {
        --chip-colour: var(--casey-warning);
    }

    .casey-chip-error {
        --chip-colour: var(--casey-error);
    }

    .casey-showcase-table-wrap {
        max-width: 100%;
        overflow: auto;
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-panel);
    }

    .casey-showcase-table {
        width: 100%;
        min-width: 42rem;
        border-collapse: collapse;
    }

    .casey-showcase-table caption {
        padding: var(--casey-space-3);
        color: var(--casey-text-secondary);
        text-align: left;
    }

    .casey-showcase-table th,
    .casey-showcase-table td {
        height: var(--casey-row-height);
        padding: var(--casey-space-2) var(--casey-space-3);
        border-bottom: 1px solid var(--casey-border-soft);
        text-align: left;
        vertical-align: middle;
    }

    .casey-showcase-table th {
        position: sticky;
        top: 0;
        z-index: 1;
        background: var(--casey-surface-raised);
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-meta);
        font-weight: 500;
    }

    .casey-showcase-table tbody tr:hover {
        background: var(--casey-table-hover-bg);
    }

    .casey-showcase-table tbody tr[aria-selected="true"] {
        background: var(--casey-selected-bg);
        box-shadow: inset 3px 0 0 var(--casey-teal);
    }

    .casey-showcase-table tbody tr:focus-visible {
        outline: 3px solid var(--casey-focus);
        outline-offset: -3px;
    }

    .casey-master-detail {
        display: grid;
        grid-template-columns: minmax(15rem, 0.8fr) minmax(20rem, 1.2fr);
        min-height: 22rem;
        overflow: hidden;
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-panel);
        container: master-detail / inline-size;
    }

    .casey-master-list,
    .casey-detail-editor {
        min-width: 0;
        padding: var(--casey-space-4);
    }

    .casey-master-list {
        border-right: 1px solid var(--casey-border);
        background: var(--casey-surface-raised);
    }

    .casey-master-list ul {
        display: grid;
        gap: var(--casey-space-1);
        margin: var(--casey-space-3) 0 0;
        padding: 0;
        list-style: none;
    }

    .casey-master-list button {
        width: 100%;
        min-height: var(--casey-target-size);
        padding: var(--casey-space-2) var(--casey-space-3);
        border: 0;
        border-radius: var(--casey-radius-control);
        background: transparent;
        color: var(--casey-text);
        text-align: left;
    }

    .casey-master-list button[aria-current="true"] {
        background: var(--casey-selected-bg);
        box-shadow: inset 3px 0 0 var(--casey-blue);
        font-weight: 700;
    }

    .casey-detail-editor {
        display: grid;
        align-content: start;
        gap: var(--casey-space-4);
        background: var(--casey-surface);
    }

    .casey-field {
        display: grid;
        gap: var(--casey-space-1);
    }

    .casey-field label {
        font-weight: 700;
    }

    .casey-field input,
    .casey-field textarea {
        min-height: var(--casey-control-height);
        padding: var(--casey-space-2) var(--casey-space-3);
    }

    .casey-field textarea {
        min-height: 7rem;
        resize: vertical;
    }

    .casey-field [aria-invalid="true"] {
        border-color: var(--casey-error);
    }

    .casey-field-error {
        color: var(--casey-error);
        font-size: var(--casey-font-meta);
        font-weight: 700;
    }

    .casey-editor-actions {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: var(--casey-space-3);
        padding-top: var(--casey-space-3);
        border-top: 1px solid var(--casey-border);
    }

    progress {
        width: 100%;
        height: .4rem;
        overflow: hidden;
        appearance: none;
        border: 0;
        border-radius: 999px;
        background: var(--casey-surface-2);
        outline: 1px solid var(--casey-control-border-strong);
        outline-offset: -1px;
    }

    progress::-webkit-progress-bar {
        border-radius: inherit;
        background: var(--casey-surface-2);
    }

    progress::-webkit-progress-value {
        border-radius: inherit;
        background: var(--casey-blue);
    }

    progress::-moz-progress-bar {
        border-radius: inherit;
        background: var(--casey-blue);
    }

    .casey-loading-status {
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-meta);
    }

    .casey-system-state {
        display: grid;
        min-height: 10rem;
        align-content: center;
        justify-items: start;
        gap: var(--casey-space-2);
        padding: var(--casey-space-4);
        border: 1px solid var(--casey-border);
        border-left: 4px solid var(--state-colour, var(--casey-blue));
        border-radius: var(--casey-radius-panel);
        background: var(--casey-surface-raised);
    }

    .casey-system-state h3,
    .casey-system-state p {
        margin: 0;
    }

    .casey-system-state p {
        color: var(--casey-text-secondary);
    }

    .casey-system-state[data-state="success"] {
        --state-colour: var(--casey-success);
    }

    .casey-system-state[data-state="warning"],
    .casey-system-state[data-state="validation"],
    .casey-system-state[data-state="conflict"] {
        --state-colour: var(--casey-warning);
    }

    .casey-system-state[data-state="error"],
    .casey-system-state[data-state="permission"] {
        --state-colour: var(--casey-error);
    }

    .casey-system-state[data-state="loading"] {
        display: block;
        min-height: 34rem;
        padding: var(--casey-space-4);
        border-left-width: 1px;
        background: var(--casey-surface-raised);
    }

    .casey-system-state[data-state="loading"].casey-system-state-compact {
        min-height: 12rem;
    }

    .casey-loading-skeleton-surface {
        min-height: 4.75rem;
        border-radius: var(--casey-radius-panel);
        background: linear-gradient(90deg, var(--casey-card-subtle), var(--casey-panel-bg), var(--casey-card-subtle));
        background-size: 200% 100%;
        animation: casey-loading-skeleton-pulse 1.2s ease-in-out infinite;
        outline: 1px solid var(--casey-control-border-strong);
        outline-offset: -1px;
    }

    .casey-loading-skeleton-rows {
        display: grid;
        gap: .75rem;
        width: min(100%, 74rem);
        margin-inline: auto;
    }

    .casey-loading-skeleton-rows > span {
        display: block;
        height: 2.75rem;
        border-radius: .35rem;
        background: var(--casey-card-subtle);
        box-shadow: inset 0 0 0 1px var(--casey-control-border-strong);
    }

    @keyframes casey-loading-skeleton-pulse {
        to {
            background-position: -200% 0;
        }
    }

    @media (prefers-reduced-motion: reduce) {
        .casey-loading-skeleton-surface {
            animation: none;
        }
    }

    .casey-route-state {
        display: grid;
        width: min(100%, 44rem);
        min-height: min(32rem, calc(100dvh - 9rem));
        align-content: center;
        gap: var(--casey-space-4);
        margin: 0 auto;
        padding: clamp(var(--casey-space-4), 5vw, var(--casey-space-8));
    }

    .casey-route-state-heading {
        display: grid;
        gap: var(--casey-space-1);
    }

    .casey-route-state-eyebrow {
        margin: 0;
        color: var(--casey-blue);
        font-size: var(--casey-font-min);
        font-weight: 750;
        letter-spacing: .065em;
        text-transform: uppercase;
    }

    .casey-route-state-heading h1 {
        margin: 0;
        color: var(--casey-text);
        font-size: clamp(1.5rem, 3vw, 2.15rem);
        letter-spacing: -.035em;
        line-height: 1.15;
    }

    .casey-route-state-reference {
        display: flex;
        flex-wrap: wrap;
        gap: var(--casey-space-2);
        align-items: center;
        margin: 0;
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-meta);
    }

    .casey-route-state-reference code {
        padding: .2rem .4rem;
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-control);
        background: var(--casey-surface-raised);
        color: var(--casey-text);
    }

    .casey-route-state-details {
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-meta);
    }

    .casey-route-state-details summary {
        width: fit-content;
        color: var(--casey-blue);
        cursor: pointer;
        font-weight: 650;
    }

    .casey-route-state-details > div {
        display: grid;
        gap: var(--casey-space-2);
        margin-top: var(--casey-space-3);
        padding: var(--casey-space-3);
        border-left: 2px solid var(--casey-border-strong, var(--casey-border));
    }

    .casey-route-state-details h2,
    .casey-route-state-details p {
        margin: 0;
    }

    .casey-route-state-details h2 {
        color: var(--casey-text);
        font-size: var(--casey-font-body);
    }

    .casey-overflow {
        position: relative;
    }

    .casey-overflow > summary {
        display: inline-grid;
        width: var(--casey-target-size);
        height: var(--casey-target-size);
        place-items: center;
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-control);
        background: var(--casey-surface);
        color: var(--casey-text);
        cursor: pointer;
        font-size: 1.25rem;
        list-style: none;
    }

    .casey-overflow > summary::-webkit-details-marker {
        display: none;
    }

    .casey-overflow-menu {
        position: absolute;
        top: calc(100% + var(--casey-space-1));
        right: 0;
        z-index: 5;
        display: grid;
        width: 13rem;
        padding: var(--casey-space-1);
        border: 1px solid var(--casey-border);
        border-radius: var(--casey-radius-control);
        background: var(--casey-surface-raised);
    }

    .casey-overflow-menu button {
        min-height: var(--casey-button-compact-height);
        padding: var(--casey-button-secondary-padding-block) var(--casey-space-2);
        border: 0;
        border-radius: calc(var(--casey-radius-control) - 0.15rem);
        background: transparent;
        color: var(--casey-text);
        font-weight: 400;
        text-align: left;
    }

    .casey-overflow-menu button:hover {
        background: var(--casey-selected-bg);
    }

    .casey-mention-menu {
        position: fixed;
        z-index: 1100;
        display: grid;
        width: min(20rem, calc(100vw - 1.5rem));
        max-height: min(20rem, calc(100vh - 1.5rem));
        gap: 0.15rem;
        overflow-y: auto;
        overscroll-behavior-y: contain;
        padding: 0.35rem;
        border: 1px solid var(--casey-border);
        border-radius: 0.65rem;
        background: var(--casey-surface-raised);
        box-shadow: 0 0.75rem 2rem rgb(15 32 55 / 18%);
    }

    .casey-mention-menu[hidden] {
        display: none;
    }

    .casey-mention-option {
        display: grid;
        grid-template-columns: 2rem minmax(0, 1fr);
        gap: 0.65rem;
        align-items: center;
        width: 100%;
        min-height: 2.75rem;
        padding: 0.4rem 0.55rem;
        border: 0;
        border-radius: 0.45rem;
        background: transparent;
        color: var(--casey-text);
        text-align: left;
    }

    .casey-mention-option:hover,
    .casey-mention-option[aria-selected="true"] {
        background: var(--casey-selected-bg);
    }

    .casey-mention-avatar {
        display: grid;
        width: 2rem;
        height: 2rem;
        place-items: center;
        border-radius: 50%;
        background: color-mix(in srgb, var(--casey-blue) 14%, var(--casey-surface-raised));
        color: var(--casey-blue);
        font-size: var(--casey-font-min);
        font-weight: 800;
    }

    .casey-mention-copy {
        display: grid;
        min-width: 0;
        line-height: 1.25;
    }

    .casey-mention-copy strong,
    .casey-mention-copy span {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .casey-mention-copy strong {
        font-size: 0.82rem;
    }

    .casey-mention-copy span {
        color: var(--casey-text-secondary);
        font-size: var(--casey-font-min);
    }

    .casey-case-actions-menu {
        position: relative;
        display: inline-flex;
        align-items: center;
    }

    .casey-case-actions-trigger {
        display: grid;
        width: var(--casey-button-compact-height);
        min-width: var(--casey-button-compact-height);
        height: var(--casey-button-compact-height);
        min-height: var(--casey-button-compact-height);
        padding: 0;
        border: 1px solid var(--casey-border);
        border-radius: 0.45rem;
        place-items: center;
        background: var(--casey-panel-solid);
        color: var(--casey-muted);
        cursor: pointer;
    }

    .casey-case-actions-trigger:hover,
    .casey-case-actions-trigger[aria-expanded="true"] {
        border-color: var(--casey-teal);
        color: var(--casey-text);
    }

    .casey-case-actions-trigger:focus-visible {
        border-color: var(--casey-teal);
        outline: 2px solid var(--casey-focus);
        outline-offset: 2px;
        color: var(--casey-text);
    }

    .casey-ellipsis-glyph {
        display: block;
        width: 1.1rem;
        height: 1.1rem;
        background: currentColor;
        -webkit-mask: url("/icons/fontawesome/regular/ellipsis.svg") center / contain no-repeat;
        mask: url("/icons/fontawesome/regular/ellipsis.svg") center / contain no-repeat;
        transform: scale(1.25);
    }

    .casey-case-actions-dismiss {
        position: fixed;
        z-index: 19;
        inset: 0;
        width: 100vw;
        height: 100vh;
        padding: 0;
        border: 0;
        background: transparent;
        cursor: default;
    }

    .casey-case-actions-list {
        position: absolute;
        z-index: 20;
        top: calc(100% + 0.4rem);
        right: 0;
        width: 12rem;
        padding: 0.35rem;
        border: 1px solid var(--casey-border);
        border-radius: 0.55rem;
        background: var(--casey-surface);
        box-shadow: 0 0.7rem 1.8rem rgb(0 0 0 / 22%);
    }

    .casey-case-actions-list button {
        display: flex;
        width: 100%;
        min-height: var(--casey-control-compact-height);
        align-items: center;
        padding: var(--casey-button-secondary-padding-block) 0.7rem;
        border: 0;
        border-radius: 0.35rem;
        background: transparent;
        color: var(--casey-text);
        cursor: pointer;
        font-size: 0.82rem;
        font-weight: 400;
        text-align: left;
        white-space: nowrap;
    }

    .casey-case-actions-list button:hover,
    .casey-case-actions-list button:focus-visible {
        outline: 0;
        background: color-mix(in srgb, var(--casey-teal) 10%, transparent);
    }

    .casey-case-actions-list button:focus-visible {
        box-shadow: inset 0 0 0 2px var(--casey-focus);
    }

    .casey-case-actions-list button:disabled {
        cursor: not-allowed;
        opacity: 0.55;
    }

    @container master-detail (max-width: 42rem) {
        .casey-master-detail {
            grid-template-columns: 1fr;
        }

        .casey-master-list {
            border-right: 0;
            border-bottom: 1px solid var(--casey-border);
        }
    }

    @container foundation-page (min-width: 75rem) {
        .casey-foundation-split {
            display: grid;
            grid-template-columns: minmax(0, 1fr) minmax(22rem, 0.75fr);
            gap: var(--casey-space-6);
        }
    }
}