/*
 * HPC-AC canonical UI foundation.
 * This file is deliberately small, stable and loaded after legacy styles.
 * New pages should consume these tokens instead of adding page-local overrides.
 */
:root {
    --ui-primary: var(--app-primary, #147fa9);
    --ui-primary-strong: var(--app-primary-dark, #0d6588);
    --ui-accent: var(--app-accent, #f59e0b);
    --ui-success: #17803d;
    --ui-warning: #a15c00;
    --ui-danger: #b42318;
    --ui-info: #166b91;
    --ui-bg: var(--app-body-bg, #f4f7fa);
    --ui-surface: #ffffff;
    --ui-surface-muted: #f7fafc;
    --ui-surface-subtle: #fbfdfe;
    --ui-text: #172b3f;
    --ui-text-muted: #60758a;
    --ui-border: #d7e2eb;
    --ui-border-strong: #bfd0de;
    --ui-focus: rgba(20, 127, 169, .18);
    --ui-shadow-xs: 0 1px 2px rgba(15, 35, 55, .04);
    --ui-shadow-sm: 0 5px 18px rgba(15, 35, 55, .06);
    --ui-shadow-md: 0 16px 38px rgba(15, 35, 55, .12);
    --ui-sidebar-width: 252px;
    --ui-topbar-height: 64px;
    --ui-content-max: 1720px;
    --ui-content-pad: clamp(14px, 1.7vw, 24px);
    --ui-section-gap: 16px;
    --ui-control-height: 40px;
    --ui-radius-control: 9px;
    --ui-radius-card: 11px;
    --ui-radius-modal: 13px;
    --ui-radius-pill: 999px;
    --ui-font-size: 14px;
    --ui-font-small: 12px;
    --ui-page-title: clamp(1.35rem, 1.8vw, 1.7rem);
    --ui-section-title: 1.05rem;
    --ui-line-height: 1.48;

    /* Legacy shell compatibility: keep layout geometry driven by one token set. */
    --sidebar-width: var(--ui-sidebar-width);
    --topbar-height: var(--ui-topbar-height);
}

[data-hpc-ui-contract="1"] {
    color: var(--ui-text);
    font-size: var(--ui-font-size);
    line-height: var(--ui-line-height);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

[data-hpc-ui-contract="1"],
[data-hpc-ui-contract="1"] * {
    box-sizing: border-box;
}

[data-hpc-ui-contract="1"] :where(button, input, select, textarea) {
    font: inherit;
}

[data-hpc-ui-contract="1"] :where(h1, h2, h3, h4, h5, h6, p, ul, ol, dl) {
    min-width: 0;
}

[data-hpc-ui-contract="1"] :where(h1, h2, h3, h4, h5, h6) {
    color: var(--ui-text);
    letter-spacing: -.015em;
    overflow-wrap: normal;
    text-wrap: balance;
    word-break: normal;
}

[data-hpc-ui-contract="1"] :where(p, li, dd, dt, td, .ui-copy, .ui-description) {
    overflow-wrap: break-word;
    word-break: normal;
}

[data-hpc-ui-contract="1"] :where(
    button, [role="button"], label, th, .hpc-sidebar-link, .hpc-sidebar-section-title,
    .as-btn, .btn, .hpc-button, .hpc-ui-badge, .badge, [role="tab"], .as-tab,
    .hpc-combobox-value, .hpc-combobox-option-label
) {
    hyphens: none;
    overflow-wrap: normal;
    word-break: normal;
}

[data-hpc-ui-contract="1"] :where(code, pre, .text-token-wrap, [data-ai-output], [data-technical-value]) {
    overflow-wrap: anywhere;
    word-break: break-word;
}

[data-hpc-ui-contract="1"] :where(:focus-visible) {
    outline: 3px solid var(--ui-focus);
    outline-offset: 2px;
}

[data-hpc-ui-contract="1"] .hpc-app-main {
    min-width: 0;
}

[data-hpc-ui-contract="1"] .hpc-main-content {
    background: var(--ui-bg);
}

[data-hpc-ui-contract="1"] .hpc-page-container {
    width: min(100%, var(--ui-content-max));
    max-width: var(--ui-content-max);
    margin-inline: auto;
    padding: var(--ui-content-pad);
}

[data-hpc-ui-contract="1"] .hpc-page-container > :where(div, section, article, form) {
    min-width: 0;
}

[data-hpc-ui-contract="1"] .hpc-page-container > :first-child {
    margin-top: 0;
}

[data-hpc-ui-contract="1"] .hpc-page-container :where(.ac-page, .space-y-4, .space-y-5, .space-y-6) {
    min-width: 0;
}

[data-hpc-ui-contract="1"] .hpc-page-container h1 {
    font-size: var(--ui-page-title);
    line-height: 1.2;
}

[data-hpc-ui-contract="1"] .hpc-page-container h2 {
    font-size: var(--ui-section-title);
    line-height: 1.3;
}

[data-hpc-ui-contract="1"] .hpc-page-container :where(.ac-title, .hpc-core-title, .page-title) {
    font-size: var(--ui-page-title) !important;
    line-height: 1.2 !important;
    letter-spacing: -.02em !important;
}

[data-hpc-ui-contract="1"] .hpc-page-container :where(.ac-subtitle, .hpc-page-subtitle, .page-description) {
    max-width: 78rem;
    color: var(--ui-text-muted);
    font-size: .9rem;
    line-height: 1.48;
}

[data-hpc-ui-contract="1"] .hpc-topbar {
    min-height: var(--ui-topbar-height);
}

[data-hpc-ui-contract="1"] .hpc-topbar-title h1 {
    max-width: min(40vw, 42rem);
    margin: 0;
    font-size: .95rem !important;
    font-weight: 760;
    letter-spacing: 0 !important;
    line-height: 1.25;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

[data-hpc-ui-contract="1"] .hpc-topbar-title p {
    margin: 0 0 .08rem;
    color: var(--ui-text-muted);
    font-size: .7rem;
    font-weight: 720;
    letter-spacing: .035em;
    text-transform: uppercase;
}

[data-hpc-ui-contract="1"] .hpc-sidebar {
    width: var(--ui-sidebar-width);
}

[data-hpc-ui-contract="1"] .hpc-sidebar :where(a, button, span, strong, small) {
    text-align: left;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-link {
    display: grid !important;
    grid-template-columns: 20px minmax(0, 1fr) 16px;
    align-items: center;
    justify-content: stretch !important;
    gap: .65rem;
    min-height: 38px;
    padding-block: .52rem;
    padding-inline: .72rem;
    border-radius: 8px !important;
    line-height: 1.28;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-link > span:not(.hpc-sidebar-dot) {
    display: -webkit-box;
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
    text-align: left;
    white-space: normal;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-link:not(.hpc-sidebar-toggle) .hpc-sidebar-chevron {
    display: none;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-link:not(.hpc-sidebar-toggle)::after {
    content: "";
    width: 1px;
    height: 1px;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-section-title {
    margin-inline: .72rem;
    font-size: .68rem;
    letter-spacing: .055em;
    line-height: 1.25;
    text-align: left;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-children {
    margin-left: .6rem;
    padding-left: .55rem;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-link.depth-1 {
    padding-left: .65rem;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-link.depth-2 {
    padding-left: .85rem;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-brand-text {
    min-width: 0;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-brand-text :where(p, span) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (max-width: 1100px) {
    :root { --ui-content-pad: 16px; }

    [data-hpc-ui-contract="1"] .hpc-topbar-title h1 {
        max-width: min(34vw, 28rem);
    }
}

@media (max-width: 760px) {
    :root { --ui-content-pad: 12px; }

    [data-hpc-ui-contract="1"] .hpc-topbar-title p { display: none; }
    [data-hpc-ui-contract="1"] .hpc-topbar-title h1 { max-width: 44vw; font-size: .88rem !important; }
    [data-hpc-ui-contract="1"] .hpc-page-container h1 { font-size: 1.3rem; }
}

/* Shell compaction and navigation readability. */
[data-hpc-ui-contract="1"] .hpc-sidebar-brand {
    min-height: 78px;
    gap: .7rem;
    padding: .75rem;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-logo {
    width: 44px;
    height: 44px;
    border-radius: 10px;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-brand-text p {
    font-size: .82rem;
    letter-spacing: 0;
    line-height: 1.2;
    text-transform: none;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-brand-text span {
    margin-top: .2rem;
    font-size: .64rem;
    letter-spacing: .04em;
    line-height: 1.25;
    text-transform: none;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-nav {
    padding: .72rem .58rem 1rem;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-section {
    margin-bottom: .72rem;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-link {
    color: var(--app-sidebar-text, #d9eef7);
    font-size: .79rem;
    font-weight: 720;
    letter-spacing: 0 !important;
    text-transform: none !important;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-link.is-child {
    font-size: .76rem;
}

[data-hpc-ui-contract="1"] .hpc-sidebar-section-title {
    padding: .32rem .08rem .42rem;
    font-weight: 780;
    text-transform: uppercase;
}

[data-hpc-ui-contract="1"] .hpc-main-content {
    padding: 0;
}

[data-hpc-ui-contract="1"] .hpc-app-footer {
    padding: .65rem var(--ui-content-pad);
}

/* Workspace navigation: a compact horizontal level above the contextual sidebar. */
[data-hpc-ui-contract="1"] .hpc-workspace-bar {
    position: sticky;
    top: var(--ui-topbar-height);
    z-index: 44;
    min-width: 0;
    border-bottom: 1px solid var(--ui-border);
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(14px);
}

[data-hpc-ui-contract="1"] .hpc-workspace-bar-inner {
    display: flex;
    align-items: center;
    gap: .3rem;
    min-height: 44px;
    max-width: none;
    overflow-x: auto;
    overflow-y: hidden;
    padding: .35rem var(--ui-content-pad);
    border: 0;
    border-radius: 0;
    background: transparent;
    scrollbar-width: thin;
}

[data-hpc-ui-contract="1"] .hpc-workspace-button {
    flex: 0 0 auto;
    min-height: 34px;
    border: 1px solid transparent;
    border-radius: 8px !important;
    background: transparent;
    color: var(--ui-text-muted);
    padding: .42rem .72rem;
    font-size: .76rem;
    font-weight: 780;
    line-height: 1.2;
    text-align: left;
    white-space: nowrap;
}

[data-hpc-ui-contract="1"] .hpc-workspace-button:hover {
    border-color: var(--ui-border);
    background: var(--ui-surface-muted);
    color: var(--ui-text);
}

[data-hpc-ui-contract="1"] .hpc-workspace-button.is-active,
[data-hpc-ui-contract="1"] .hpc-workspace-button[aria-selected="true"] {
    border-color: #a9d2e2;
    background: #eaf6fb;
    color: var(--ui-primary-strong);
    box-shadow: var(--ui-shadow-xs);
}

[data-hpc-ui-contract="1"] [data-hpc-workspace-panel][hidden] {
    display: none !important;
}

@media (max-width: 760px) {
    [data-hpc-ui-contract="1"] .hpc-workspace-bar {
        top: var(--ui-topbar-height);
    }

    [data-hpc-ui-contract="1"] .hpc-workspace-bar-inner {
        min-height: 42px;
        padding-inline: 10px;
    }
}

/* Authenticated shell three-row hierarchy: primary controls, grouped menus, breadcrumbs. */
[data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row {
    width: 100%;
    min-width: 0;
}
[data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row--primary {
    position: relative;
    z-index: 3;
}
[data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row--workspace {
    position: static;
    top: auto;
    z-index: 2;
    border-top: 1px solid rgba(216, 230, 240, .72);
    border-bottom: 1px solid var(--ui-border);
    background: rgba(255, 255, 255, .97);
}
[data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row--workspace .hpc-workspace-bar-inner {
    min-height: 42px;
    padding-block: .3rem;
}
[data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row--breadcrumbs {
    position: relative;
    z-index: 1;
    border-top: 0;
    border-bottom: 0;
    background: rgba(248, 251, 253, .92);
}
@media (max-width: 760px) {
    [data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row--workspace {
        position: static;
        top: auto;
    }
    [data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row--workspace .hpc-workspace-bar-inner {
        min-height: 40px;
    }
    [data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row--breadcrumbs {
        overflow-x: auto;
        overflow-y: hidden;
        padding-block: .38rem .48rem;
        scrollbar-width: thin;
    }
    [data-hpc-ui-contract="1"] .hpc-topbar > .hpc-shell-row--breadcrumbs ol {
        width: max-content;
        min-width: 100%;
        flex-wrap: nowrap;
    }
}