/* HRConnect public handbook — shared public content primitives only. */
.public-handbook-os {
    --handbook-surface: var(--color-surface-primary, var(--hrc-neutral-0, #fff));
    --handbook-surface-soft: var(--color-surface-secondary, var(--hrc-neutral-50, #f8fafc));
    --handbook-text: var(--color-text-primary, var(--hrc-neutral-900, #0f172a));
    --handbook-muted: var(--color-text-secondary, var(--hrc-neutral-600, #475569));
    --handbook-border: var(--color-border-default, var(--hrc-neutral-200, #e2e8f0));
    --handbook-primary: var(--color-action-primary, var(--hrc-brand-600, #2563eb));
    --handbook-primary-soft: var(--color-surface-info-subtle, var(--hrc-brand-50, #eff6ff));
    --handbook-radius: var(--radius-xl, 20px);
    --handbook-radius-sm: var(--radius-lg, 14px);
    --handbook-shadow: var(--shadow-card, 0 16px 40px rgba(15, 23, 42, .08));
}

.public-handbook-os main.hrc-page-container {
    display: grid;
    gap: var(--space-6, 24px);
}

.public-handbook-os .handbook-hero {
    position: relative;
    isolation: isolate;
    border-radius: var(--handbook-radius);
    background:
        radial-gradient(circle at 92% 8%, color-mix(in srgb, var(--handbook-primary) 11%, transparent) 0 18%, transparent 19%),
        linear-gradient(135deg, var(--handbook-surface) 0 56%, var(--handbook-primary-soft) 100%);
}

.public-handbook-os .handbook-hero > div:first-child {
    display: flex;
    min-width: 0;
    flex-direction: column;
    justify-content: center;
}

.public-handbook-os .handbook-hero .ai-news-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-content: center;
}

.public-handbook-os .handbook-search {
    width: min(680px, 100%);
    margin-top: var(--space-5, 20px);
}

.public-handbook-os .handbook-search > label {
    display: block;
    margin-bottom: var(--space-2, 8px);
    color: var(--handbook-text);
    font-size: var(--font-size-sm, 14px);
    font-weight: 700;
}

.public-handbook-os .handbook-search > div {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-2, 8px);
    padding: var(--space-1, 4px);
    border: 1px solid var(--handbook-border);
    border-radius: var(--handbook-radius-sm);
    background: var(--handbook-surface);
    box-shadow: var(--shadow-sm, 0 5px 16px rgba(15, 23, 42, .05));
}

.public-handbook-os .handbook-search input {
    min-width: 0;
    min-height: 44px;
    border: 0;
    border-radius: calc(var(--handbook-radius-sm) - 4px);
    padding: 0 var(--space-4, 16px);
    outline: 0;
    background: transparent;
    color: var(--handbook-text);
    font: inherit;
}

.public-handbook-os .handbook-search button,
.public-handbook-os .handbook-primary-link,
.public-handbook-os .handbook-not-found > a {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: calc(var(--handbook-radius-sm) - 3px);
    padding: 0 var(--space-5, 20px);
    background: var(--hrc-action-primary);
    color: var(--hrc-action-on-primary);
    font: inherit;
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
}

.public-handbook-os .handbook-primary-link:focus-visible,
.public-handbook-os .handbook-not-found > a:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--handbook-primary) 25%, transparent);
    outline-offset: 3px;
}

.public-handbook-os .handbook-search input:focus-visible,
.public-handbook-os .handbook-search:focus-within {
    border-color: var(--handbook-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--handbook-primary) 16%, transparent);
}

.public-handbook-os .handbook-library,
.public-handbook-os .handbook-video-section {
    padding: var(--space-6, 24px);
}

.public-handbook-os .handbook-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4, 16px);
    margin-top: var(--space-5, 20px);
}

.public-handbook-os .handbook-card {
    min-width: 0;
    border: 1px solid var(--handbook-border);
    border-radius: var(--handbook-radius-sm);
    overflow: hidden;
    background: var(--handbook-surface);
    box-shadow: var(--shadow-sm, 0 8px 22px rgba(15, 23, 42, .05));
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.public-handbook-os .handbook-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--handbook-primary) 32%, var(--handbook-border));
    box-shadow: var(--handbook-shadow);
}

.public-handbook-os .handbook-card-link {
    display: flex;
    height: 100%;
    min-height: 100%;
    flex-direction: column;
    gap: var(--space-3, 12px);
    padding: var(--space-4, 16px);
    color: inherit;
    text-decoration: none;
}

.public-handbook-os .handbook-card-link:focus-visible {
    border-radius: var(--handbook-radius-sm);
    outline: 3px solid color-mix(in srgb, var(--handbook-primary) 25%, transparent);
    outline-offset: -3px;
}

.public-handbook-os .handbook-card img,
.public-handbook-os .handbook-card-visual {
    display: flex;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: calc(var(--handbook-radius-sm) - 3px);
    overflow: hidden;
}

.public-handbook-os .handbook-card img {
    object-fit: cover;
}

.public-handbook-os .handbook-card-visual {
    align-items: flex-end;
    justify-content: space-between;
    padding: var(--space-4, 16px);
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--handbook-primary) 8%, var(--handbook-surface)) 0%, var(--handbook-primary-soft) 100%);
    color: var(--handbook-primary);
}

.public-handbook-os .handbook-card-visual b {
    font-size: clamp(34px, 5vw, 54px);
    line-height: 1;
}

.public-handbook-os .handbook-card-visual small {
    color: var(--handbook-muted);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.public-handbook-os .handbook-category {
    align-self: flex-start;
    display: inline-flex;
    min-height: 28px;
    align-items: center;
    border: 1px solid color-mix(in srgb, var(--handbook-primary) 18%, var(--handbook-border));
    border-radius: 999px;
    padding: 0 var(--space-3, 12px);
    background: var(--handbook-primary-soft);
    color: var(--handbook-primary);
    font-size: 12px;
    font-weight: 800;
}

.public-handbook-os .handbook-card h3 {
    margin: 0;
    color: var(--handbook-text);
    font-size: clamp(18px, 1.5vw, 22px);
    line-height: 1.3;
}

.public-handbook-os .handbook-card p {
    margin: 0;
    color: var(--handbook-muted);
    line-height: 1.6;
}

.public-handbook-os .handbook-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3, 12px);
    margin-top: auto;
    padding-top: var(--space-3, 12px);
    border-top: 1px solid var(--handbook-border);
    color: var(--handbook-muted);
    font-size: 13px;
}

.public-handbook-os .handbook-card-meta strong {
    color: var(--handbook-primary);
}

.public-handbook-os .handbook-breadcrumb {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: var(--space-2, 8px);
    color: var(--handbook-muted);
    font-size: 14px;
}

.public-handbook-os .handbook-breadcrumb a {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
    min-height: var(--hrc-touch-target);
    color: var(--handbook-primary);
    font-weight: var(--hrc-weight-semibold);
    text-decoration: none;
}

.public-handbook-os .handbook-breadcrumb a:focus-visible {
    outline: var(--hrc-focus-width) solid var(--hrc-color-focus);
    outline-offset: var(--hrc-focus-offset);
    border-radius: var(--hrc-radius-sm);
}

.public-handbook-os .handbook-breadcrumb span[aria-current="page"] {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.public-handbook-os .handbook-detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
    gap: var(--space-6, 24px);
    align-items: start;
}

.public-handbook-os .handbook-detail {
    --hrc-public-heading-measure: 100%;
    min-width: 0;
    border: 1px solid var(--handbook-border);
    border-radius: var(--handbook-radius);
    overflow: hidden;
    background: var(--handbook-surface);
    box-shadow: var(--handbook-shadow);
}

.public-handbook-os .handbook-detail-header,
.public-handbook-os .handbook-content,
.public-handbook-os .handbook-notice {
    padding: var(--hrc-space-6);
}

.public-handbook-os .handbook-detail-header {
    padding-bottom: var(--space-6, 24px);
    background: linear-gradient(135deg, var(--handbook-surface) 0 58%, var(--handbook-primary-soft) 100%);
}

.public-handbook-os .handbook-detail h1 {
    max-width: 860px;
    margin: var(--space-4, 16px) 0;
    color: var(--handbook-text);
    font-size: clamp(32px, 5vw, 56px);
    line-height: 1.1;
    letter-spacing: -.03em;
}

.public-handbook-os .handbook-lead {
    max-width: 780px;
    margin: 0;
    color: var(--handbook-muted);
    font-size: clamp(17px, 2vw, 20px);
    line-height: 1.65;
}

.public-handbook-os .handbook-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 8px) var(--space-5, 20px);
    margin-top: var(--space-5, 20px);
    color: var(--handbook-muted);
    font-size: var(--hrc-text-sm);
    font-weight: var(--hrc-weight-medium);
}

.public-handbook-os .handbook-cover {
    display: block;
    width: calc(100% - var(--hrc-space-6) - var(--hrc-space-6));
    height: auto;
    max-height: 520px;
    margin: 0 auto;
    border-radius: var(--handbook-radius-sm);
    object-fit: contain;
}

.public-handbook-os .handbook-content {
    max-width: 820px;
    margin: 0 auto;
    color: var(--handbook-text);
}

.public-handbook-os .handbook-content h2 {
    margin: var(--hrc-space-6) 0 var(--hrc-space-3);
    font-size: var(--hrc-text-xl);
    font-weight: var(--hrc-weight-semibold);
    line-height: var(--hrc-leading-normal);
}

.public-handbook-os .handbook-content h3 {
    margin: var(--hrc-space-5) 0 var(--hrc-space-2);
    font-size: var(--hrc-text-lg);
    font-weight: var(--hrc-weight-semibold);
    line-height: var(--hrc-leading-normal);
}

/* The reader container already supplies edge spacing; do not double it. */
.public-handbook-os .handbook-content > :first-child {
    margin-top: 0;
}

.public-handbook-os .handbook-content > :last-child {
    margin-bottom: 0;
}

.public-handbook-os .handbook-content p,
.public-handbook-os .handbook-content li {
    color: var(--handbook-muted);
    font-size: var(--hrc-text-lg);
    line-height: var(--hrc-leading-relaxed);
}

.public-handbook-os .handbook-content ul {
    display: grid;
    gap: var(--space-2, 8px);
    margin: var(--space-3, 12px) 0;
    padding-left: 1.35em;
}

.public-handbook-os .handbook-notice {
    border-top: 1px solid var(--handbook-border);
    background: var(--handbook-primary-soft);
}

.public-handbook-os .handbook-notice p {
    margin: var(--space-2, 8px) 0 0;
    color: var(--handbook-muted);
    line-height: 1.6;
}

.public-handbook-os .handbook-detail-aside {
    position: sticky;
    top: 88px;
}

.public-handbook-os .handbook-aside-card {
    display: grid;
    gap: var(--space-3, 12px);
    border: 1px solid var(--handbook-border);
    border-radius: var(--handbook-radius);
    padding: var(--space-5, 20px);
    background: var(--handbook-surface);
    box-shadow: var(--shadow-sm, 0 10px 28px rgba(15, 23, 42, .06));
}

.public-handbook-os .handbook-aside-card h2 {
    margin: 0;
    font-size: 24px;
}

.public-handbook-os .handbook-aside-card > a:not(.handbook-primary-link) {
    display: grid;
    gap: var(--space-1, 4px);
    min-height: 44px;
    border-top: 1px solid var(--handbook-border);
    padding: var(--space-3, 12px) 0;
    color: var(--handbook-text);
    text-decoration: none;
}

.public-handbook-os .handbook-aside-card > a span {
    color: var(--handbook-muted);
    font-size: 13px;
}

.public-handbook-os .handbook-primary-link {
    margin-top: var(--space-2, 8px);
}

.public-handbook-os .handbook-not-found {
    display: grid;
    min-height: 420px;
    place-items: center;
    align-content: center;
    gap: var(--space-3, 12px);
    padding: var(--space-8, 32px);
    text-align: center;
}

.public-handbook-os .handbook-not-found h1,
.public-handbook-os .handbook-not-found p {
    margin: 0;
}

html[data-theme="dark"] .public-handbook-os,
.public-handbook-os.is-dark,
.public-handbook-os[data-theme="dark"] {
    --handbook-surface: var(--color-surface-primary, var(--hrc-neutral-900, #0f172a));
    --handbook-surface-soft: var(--color-surface-secondary, var(--hrc-neutral-800, #1e293b));
    --handbook-text: var(--color-text-primary, var(--hrc-neutral-50, #f8fafc));
    --handbook-muted: var(--color-text-secondary, var(--hrc-neutral-300, #cbd5e1));
    --handbook-border: var(--color-border-default, var(--hrc-neutral-700, #334155));
    --handbook-primary: var(--hrc-brand-300, #93c5fd);
    --handbook-primary-soft: color-mix(in srgb, var(--hrc-brand-600, #2563eb) 18%, var(--handbook-surface));
}

@media (max-width: 1024px) {
    .public-handbook-os .handbook-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .public-handbook-os .handbook-detail-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .public-handbook-os .handbook-detail-aside {
        position: static;
    }
}

@media (max-width: 768px) {
    .public-handbook-os .handbook-hero .ai-news-stats {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .public-handbook-os .handbook-library,
    .public-handbook-os .handbook-video-section {
        padding: var(--space-4, 16px);
    }
}

@media (max-width: 640px) {
    .public-handbook-os main.hrc-page-container {
        gap: var(--space-4, 16px);
    }

    .public-handbook-os .handbook-grid {
        grid-template-columns: 1fr;
    }

    .public-handbook-os .handbook-search > div {
        grid-template-columns: 1fr;
    }

    .public-handbook-os .handbook-search button {
        width: 100%;
    }

    .public-handbook-os .handbook-card-link {
        padding: var(--space-3, 12px);
    }

    .public-handbook-os .handbook-card-meta {
        align-items: flex-start;
        flex-direction: column;
    }

    .public-handbook-os .handbook-breadcrumb span[aria-current="page"] {
        display: none;
    }

    .public-handbook-os .handbook-detail-header,
    .public-handbook-os .handbook-content,
    .public-handbook-os .handbook-notice {
        padding: var(--hrc-space-5);
    }

    .public-handbook-os .handbook-cover {
        width: calc(100% - var(--hrc-space-5) - var(--hrc-space-5));
    }

    .public-handbook-os .handbook-detail h1 {
        font-size: clamp(30px, 10vw, 40px);
    }

    .public-handbook-os .handbook-content p,
    .public-handbook-os .handbook-content li {
        font-size: var(--hrc-text-lg);
    }
}

@media (max-width: 390px) {
    .public-handbook-os .tcv-header {
        padding-inline: var(--space-2, 8px);
    }

    .public-handbook-os .tcv-nav[data-public-navigation] {
        width: 100% !important;
        margin-inline: 0 !important;
        padding-inline: 0 !important;
        gap: var(--space-2, 8px) !important;
    }

}

@media (prefers-reduced-motion: reduce) {
    .public-handbook-os .handbook-card,
    .public-handbook-os .handbook-search button {
        transition: none;
    }
}