/* ── Documentation Reference Hub ── */
.dh-page {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

.dh-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.dh-header-text {
    flex: 1;
}

.dh-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 4px;
    letter-spacing: -0.02em;
}

.dh-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.dh-search-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-secondary, #0f1117);
    border: 1px solid var(--border-color, #1e2030);
    border-radius: 10px;
    padding: 10px 16px;
    margin-bottom: 20px;
    transition: border-color 0.2s;
}

.dh-search-bar:focus-within {
    border-color: var(--accent-blue, #6c8aff);
    box-shadow: 0 0 0 3px rgba(108, 138, 255, 0.1);
}

.dh-search-bar svg {
    color: var(--text-muted, #4e5263);
    flex-shrink: 0;
}

.dh-search-input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
}

.dh-search-input::placeholder {
    color: var(--text-muted, #4e5263);
}

/* Stats row / category chips */
.dh-stats-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.dh-stat-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color, #1e2030);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
}

.dh-stat-chip:hover {
    background: color-mix(in srgb, var(--chip-color, #6c8aff) 10%, transparent);
    border-color: color-mix(in srgb, var(--chip-color, #6c8aff) 30%, transparent);
    color: var(--chip-color, #6c8aff);
}

.dh-stat-chip svg {
    width: 14px;
    height: 14px;
    color: var(--chip-color, #6c8aff);
}

.dh-stat-count {
    background: rgba(255, 255, 255, 0.06);
    padding: 1px 7px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
}

/* Category sections */
.dh-category {
    margin-bottom: 32px;
}

.dh-category-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color, #1e2030);
}

.dh-category-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: color-mix(in srgb, var(--cat-color, #6c8aff) 12%, transparent);
    color: var(--cat-color, #6c8aff);
    flex-shrink: 0;
}

.dh-category-icon svg {
    width: 16px;
    height: 16px;
}

.dh-category-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
}

.dh-category-count {
    font-size: 0.72rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.04);
    padding: 2px 8px;
    border-radius: 10px;
}

/* Document cards grid */
.dh-doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 12px;
}

.dh-doc-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary, #0f1117);
    border: 1px solid var(--border-color, #1e2030);
    border-radius: 10px;
    padding: 16px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
    cursor: pointer;
}

.dh-doc-card:hover {
    border-color: var(--accent-blue, #6c8aff);
    background: rgba(108, 138, 255, 0.04);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.dh-doc-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.4;
}

.dh-doc-desc {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 10px;
    flex: 1;
}

.dh-doc-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 8px;
}

.dh-doc-tag {
    font-size: 0.62rem;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 4px;
    background: rgba(108, 138, 255, 0.1);
    color: var(--accent-blue, #6c8aff);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.dh-doc-link {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    color: var(--text-muted);
    transition: color 0.2s;
}

.dh-doc-card:hover .dh-doc-link {
    color: var(--accent-blue, #6c8aff);
}

.dh-empty {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ── Guidance Cards ───────────────────────────────────────────────── */
.dh-guidance-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: all 0.2s;
    cursor: pointer;
    overflow: hidden;
}
.dh-guidance-card:hover {
    border-color: rgba(244, 114, 182, 0.35);
    background: rgba(244, 114, 182, 0.03);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
.dh-guidance-open {
    grid-column: 1 / -1;
    border-color: rgba(244, 114, 182, 0.4);
    box-shadow: 0 4px 20px rgba(244, 114, 182, 0.08);
    cursor: default;
    transform: none;
}
.dh-guidance-open:hover {
    background: var(--bg-secondary);
    transform: none;
    box-shadow: 0 4px 20px rgba(244, 114, 182, 0.08);
}
.dh-guidance-header {
    padding: 16px;
    cursor: pointer;
}
.dh-guidance-type-badge {
    font-size: 0.62rem;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}
.dh-guidance-type-policy-procedure {
    background: rgba(244, 114, 182, 0.12);
    color: #f472b6;
}
.dh-guidance-type-supplemental {
    background: rgba(168, 85, 247, 0.12);
    color: #a855f7;
}
.dh-guidance-type-guidance {
    background: rgba(56, 189, 248, 0.12);
    color: #38bdf8;
}
.dh-guidance-expand-hint {
    margin-top: 4px;
    transition: color 0.15s;
}
.dh-guidance-card:hover .dh-guidance-expand-hint {
    color: #f472b6;
}

/* Guidance body (expanded) */
.dh-guidance-body {
    border-top: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: dh-guidance-slide 0.25s ease;
    cursor: default;
}
@keyframes dh-guidance-slide {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
.dh-guidance-summary {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.65;
    padding: 14px 16px;
    background: rgba(244, 114, 182, 0.04);
    border: 1px solid rgba(244, 114, 182, 0.12);
    border-radius: 8px;
}
.dh-guidance-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.dh-guidance-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.dh-guidance-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}
.dh-guidance-section-title svg {
    color: #f472b6;
    flex-shrink: 0;
}
.dh-guidance-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.dh-guidance-list li {
    font-size: 0.76rem;
    color: var(--text-secondary);
    line-height: 1.5;
    padding-left: 16px;
    position: relative;
}
.dh-guidance-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: rgba(244, 114, 182, 0.4);
}
.dh-guidance-considerations {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.dh-guidance-considerations li {
    font-size: 0.76rem;
    color: var(--text-secondary);
    line-height: 1.55;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-left: 3px solid rgba(244, 114, 182, 0.3);
    border-radius: 6px;
}
.dh-guidance-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}
.dh-guidance-ctrl-chip {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 4px;
    background: rgba(99, 102, 241, 0.1);
    color: #818cf8;
    letter-spacing: 0.02em;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

/* Light theme overrides */
.light-theme .dh-doc-card,
[data-theme="light"] .dh-doc-card {
    background: rgba(255,255,255,0.85);
    border-color: var(--border-color);
}
.light-theme .dh-doc-card:hover,
[data-theme="light"] .dh-doc-card:hover {
    border-color: var(--accent-blue);
    background: rgba(255,255,255,0.95);
}
.light-theme .dh-search-bar,
[data-theme="light"] .dh-search-bar {
    background: rgba(255,255,255,0.85);
    border-color: var(--border-color);
}
.light-theme .dh-stat-chip,
[data-theme="light"] .dh-stat-chip {
    background: rgba(255,255,255,0.6);
    border-color: var(--border-color);
}
.light-theme .dh-guidance-card,
[data-theme="light"] .dh-guidance-card {
    background: rgba(255,255,255,0.85);
    border-color: var(--border-color);
}
.light-theme .dh-guidance-card:hover,
[data-theme="light"] .dh-guidance-card:hover {
    border-color: rgba(244, 114, 182, 0.4);
    background: rgba(255,255,255,0.95);
}
.light-theme .dh-guidance-open,
[data-theme="light"] .dh-guidance-open {
    background: rgba(255,255,255,0.92);
}
.light-theme .dh-guidance-open:hover,
[data-theme="light"] .dh-guidance-open:hover {
    background: rgba(255,255,255,0.92);
}
.light-theme .dh-guidance-summary,
[data-theme="light"] .dh-guidance-summary {
    background: rgba(244, 114, 182, 0.04);
    border-color: rgba(244, 114, 182, 0.15);
}
.light-theme .dh-guidance-considerations li,
[data-theme="light"] .dh-guidance-considerations li {
    background: rgba(0, 0, 0, 0.01);
    border-color: var(--border-color);
    border-left-color: rgba(244, 114, 182, 0.4);
}

@media (max-width: 768px) {
    .dh-page {
        padding: 16px 12px 40px;
    }
    .dh-header {
        flex-direction: column;
        gap: 12px;
    }
    .dh-title {
        font-size: 1.2rem;
    }
    .dh-doc-grid {
        grid-template-columns: 1fr;
    }
    .dh-stats-row {
        gap: 6px;
    }
    .dh-stat-chip {
        font-size: 0.72rem;
        padding: 4px 8px;
    }
    .dh-stat-chip svg {
        display: none;
    }
    .dh-doc-card {
        padding: 12px;
    }
    .dh-category {
        margin-bottom: 24px;
    }
    .dh-guidance-body {
        padding: 14px;
        gap: 16px;
    }
    .dh-guidance-columns {
        grid-template-columns: 1fr;
    }
    .dh-guidance-considerations {
        grid-template-columns: 1fr;
    }
    .dh-guidance-considerations li {
        padding: 8px 10px;
        font-size: 0.74rem;
    }
}

@media (max-width: 480px) {
    .dh-page {
        padding: 12px 8px 32px;
    }
    .dh-title {
        font-size: 1.05rem;
    }
    .dh-subtitle {
        font-size: 0.75rem;
    }
    .dh-search-bar {
        padding: 8px 12px;
    }
    .dh-stat-chip {
        font-size: 0.65rem;
        padding: 3px 6px;
    }
}