:root {
    --ink: #1f2937;
    --muted: #6b7280;
    --bg: #f7f9fc;
    --panel: #fff;
    --chip: #e8f1fb;
    --chip-border: #cfe2f7;
    --accent: #2f6db5;
    --danger: #c0392b;
    --divider: #e5e7eb;
    --tab-bg: #eef2f7;
    --good: #2bc233;

    --chip-text: #0d3c73;
    --chip-neg-bg: #ecfdf5;
    --chip-neg-border: #34d399;
    --chip-neg-text: #065f46;
    --chip-critical-bg: #fee2e2;
    --chip-critical-border: #dc2626;
    --chip-critical-text: #b91c1c;
    --panel-header-text: #27496d;
    --subhead-border: #98b9e9;
    --cb-text: #334;
    --cb-bg: rgb(246, 250, 255, 0.2);
    --subhead: #39639c;

    /* Sticky stack heights */
    --appbar-h: 38px;
    /* app bar height */
    --tier1-h: 36px;
    /* top tabs row */
    --tier2-h: 36px;
    /* second tabs row */
}



/* lightweight defaults in case styles.css is minimal */
body {
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    margin: 0;
}

header.appbar {
    --brand-icon-size: calc(var(--appbar-h) - 10px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    background: #f8f9fb;
}

header.appbar h1 {
    font-size: 18px;
    margin: 0;
}

.site-title {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.site-title__icon {
    width: auto;
    height: var(--brand-icon-size, 28px);
    max-height: 100%;
    aspect-ratio: 1 / 1;
    flex: 0 0 auto;
    border-radius: 0.35em;
    object-fit: contain;
}

main {
    max-width: 900px;
    margin: 28px auto;
    padding: 0 16px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

.card {
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: 12px;
    padding: 16px;
    background: white;
}

.card h2 {
    margin: 0 0 8px;
    font-size: 16px;
}

.card p {
    margin: 0 0 12px;
    color: #555;
    font-size: 14px;
}

.home-welcome {
    margin-bottom: 18px;
}

.home-welcome-title {
    margin: 0 0 10px;
    font-size: 18px;
}

.home-welcome-copy {
    margin: 0;
    color: #444;
}

.home-link {
    font-size: 90%;
    background-color: transparent;
    padding: 3px 8px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--ink);
}

.home-link--with-icon {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.home-link__icon {
    width: auto;
    height: var(--brand-icon-size, 28px);
    max-height: 100%;
    aspect-ratio: 1 / 1;
    flex: 0 0 auto;
    border-radius: 0.35em;
    object-fit: contain;
}

.noscript-empty {
    max-width: 680px;
    margin: 16px auto;
}

.card a.button {
    display: inline-block;
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

footer {
    color: #777;
    font-size: 12px;
    text-align: center;
    padding: 28px 0;
}


/* Navigation Dropdown */
#float-nav-container {
    position: relative;
    display: inline-block;
    font-size: 14px;
}

#float-nav-button-container>span {
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    background: var(--chip);
    border: 1px solid var(--chip-border);
    color: var(--chip-text);
    transition: background .2s ease;
}

#float-nav-button-container>span:hover {
    background: color-mix(in oklab, var(--chip) 85%, var(--accent));
    color: var(--ink);
}


.nav_category {
    padding: 8px 16px;
    cursor: pointer;
    font-weight: 500;
    color: var(--ink);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav_category:hover {
    background: var(--tab-bg);
}

.nav_category.has-children>.nav_submenu {
    display: none;
    padding-left: 12px;
}


.nav_submenu a.nav_link_tab,
.nav_submenu label.nav_link_tab,
.nav_submenu span.nav_link_tab {
    display: block;
    padding: 10px 14px;
    font-size: 0.95rem;
    color: #333;
    text-decoration: none;
    border-radius: 6px;
    min-width: 160px;
    /* readable target width */
    width: max-content;
    /* grow to content */
    transition: background .2s ease, color .2s ease;
}

.nav_submenu a.nav_link_tab:hover,
.nav_submenu label.nav_link_tab:hover,
.nav_submenu span.nav_link_tab:hover {
    background: var(--chip);
    color: var(--ink);
}

/* --- Nav polish: accessibility, affordances, motion --- */

/* Focus handling */
#float-nav-button-container>span:focus-visible,
.nav_category:focus-visible,
.nav_submenu a.nav_link_tab:focus-visible,
.nav_submenu label.nav_link_tab:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 8px;
}

/* Caret affordance for categories */
.nav_category.has-children>span::after {
    content: "▸";
    /* simple caret */
    margin-left: 10px;
    font-size: 12px;
    color: var(--muted);
    transition: transform .18s ease, color .18s ease;
}

.nav_category.has-children:hover>span::after {
    transform: rotate(90deg);
    color: var(--ink);
}

/* Dropdown subtle motion & layering */
.nav_dropdown_container {
    transform-origin: top right;
    opacity: 0;
    transform: translateY(4px) scale(0.98);
    transition: opacity .16s ease, transform .16s ease;
}

#float-nav-button-container:hover .nav_dropdown_container,
#float-nav-button-container:focus-within .nav_dropdown_container,
.nav_dropdown_container:hover {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Submenu reveal with smoothness */
.nav_category.has-children>.nav_submenu {
    transition: opacity .16s ease, transform .16s ease;
    transform-origin: top left;
    opacity: 0;
    transform: translateY(2px);
}

.nav_category:hover>.nav_submenu,
.nav_category:focus-within>.nav_submenu {
    opacity: 1;
    transform: translateY(0);
}

/* Submenu panel visuals */
.nav_submenu {
    border-left: 1px dashed var(--chip-border);
    margin-left: 8px;
    padding-left: 8px;
}

/* Item hit targets */
.nav_submenu a.nav_link_tab,
.nav_submenu label.nav_link_tab,
.nav_submenu span.nav_link_tab {
    border-radius: 6px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    .nav_dropdown_container,
    .nav_category.has-children>.nav_submenu {
        transition: none !important;
        transform: none !important;
    }
}

/* Mobile tweaks */
@media (max-width: 768px) {
    #float-nav-container {
        font-size: 15px;
    }

    #float-nav-button-container>span {
        padding: 10px 14px;
    }

    .nav_dropdown_container {
        min-width: 260px;
    }
}


/* Settings side-panel: polished, theme-aware, accessible */
.settings-panel {
    position: fixed;
    inset: 0;
    /* cover the whole viewport so we can add an overlay */
    z-index: 1000;
    pointer-events: none;
    visibility: hidden;
    /* disabled until open */
}

/* Dimmed overlay */
.settings-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity .25s ease;
}

/* The sliding sheet */
.settings-panel-content {
    position: absolute;
    top: 0;
    right: 0;
    width: min(360px, 92vw);
    height: 100%;
    background: var(--panel, #fff);
    color: var(--ink, #0e1116);
    border-left: 1px solid var(--chip-border, #e2e8f0);
    box-shadow: -16px 0 48px rgba(0, 0, 0, .2);
    padding: 20px 18px 24px;
    transform: translateX(100%);
    transition: transform .28s ease;
}

/* Open state enables interactions, shows overlay, and slides in sheet */
.settings-panel.open {
    pointer-events: auto;
    visibility: visible;
}

.settings-panel.open::before {
    opacity: 1;
}

.settings-panel.open .settings-panel-content {
    transform: translateX(0);
}

/* Close button */
.close-settings {
    background: none;
    border: 1px solid transparent;
    font-size: 22px;
    line-height: 1;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: inline-grid;
    place-items: center;
    cursor: pointer;
    color: var(--muted, #667085);
    transition: background .2s ease, border-color .2s ease, color .2s ease;
    float: right;
}

.close-settings:hover {
    background: var(--chip, #f5f7fb);
    color: var(--ink, #0e1116);
}

.close-settings:focus-visible {
    outline: 2px solid var(--accent, #3b82f6);
    outline-offset: 2px;
}

/* Headings & layout */
.settings-panel-content h2 {
    margin: 0 0 6px;
    font-size: 18px;
}

.settings-panel-content h3 {
    margin: 18px 0 8px;
    font-size: 14px;
    color: var(--muted, #667085);
    text-transform: uppercase;
    letter-spacing: .04em;
}

/* Radio group */
.settings-panel-content label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 6px 0;
    cursor: pointer;
}

.settings-panel-content input[type="radio"] {
    accent-color: var(--accent, #3b82f6);
}

/* Motion preferences */
@media (prefers-reduced-motion: reduce) {

    .settings-panel::before,
    .settings-panel-content {
        transition: none !important;
    }
}