/* ============================================================
   Step Details Modal — v3 atom-aware step inspector.
   Layered on top of the shared .modal-overlay / .modal-content
   shell in components.css. Only styles the new step-modal sections;
   surface tokens (bg, border, shadow) come from the existing modal
   classes — we don't override them here.
   ============================================================ */

/* Layout (column shell, scrollable body, pinned footer, circular close
   button) is provided by the shared `modal-overlay--paneled` variant in
   components.css. This file only adds step-details-specific section
   styling on top. */

/* Header pieces */
.step-details-modal__title-block {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
    flex: 1 1 auto;
    min-width: 0;
}

.step-details-modal__title {
    margin: 0;
}

.step-details-modal__step-id {
    color: var(--text-muted);
}

.step-details-modal__header-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Status flag chips (needs-detail, loop role, etc.) */
.step-details-modal__flag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 2px 8px;
    border-radius: var(--border-radius-pill);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.step-details-modal__flag--loop {
    background: var(--fractal-chip-loop-bg);
    color: var(--fractal-chip-loop-text);
}

.step-details-modal__flag--detail {
    background: var(--fractal-chip-nested-bg);
    color: var(--fractal-chip-nested-text);
}

.step-details-modal__flag--nested {
    background: var(--fractal-chip-nested-bg);
    color: var(--fractal-chip-nested-text);
}

/* Body sections */
.step-details-modal__sections {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.step-details-modal__section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.step-details-modal__section-header {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin: 0;
}

.step-details-modal__section-count {
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
}

.step-details-modal__section-help {
    color: var(--text-muted);
    margin: 0;
}

/* Read-only display for a non-editable text value */
.step-details-modal__value {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color-light);
    border-radius: var(--border-radius-sm);
    background: var(--bg-base);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    word-break: break-word;
}

.step-details-modal__value--mono {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

/* Citation block (source / source_ref / code_ref) */
.step-details-modal__citation {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.step-details-modal__citation-row {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.step-details-modal__citation-label {
    flex-shrink: 0;
}

/* Atom-ref rows (collapsed-by-default, expandable on click) */
.step-details-modal__atom-list {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.step-details-modal__atom {
    border: 1px solid var(--border-color-light);
    border-radius: var(--border-radius-sm);
    background: var(--bg-base);
    overflow: hidden;
}

.step-details-modal__atom-summary {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    list-style: none;
}

.step-details-modal__atom-summary::-webkit-details-marker {
    display: none;
}

.step-details-modal__atom-summary::marker {
    display: none;
    content: "";
}

.step-details-modal__atom-summary:hover {
    background: var(--bg-raised-hover);
}

.step-details-modal__atom-pill {
    display: inline-block;
    padding: 1px 6px;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    align-self: center;
    flex-shrink: 0;
    background: var(--bg-lower);
    color: var(--text-secondary);
}

.step-details-modal__atom-pill--snippet {
    background: rgba(107, 114, 128, 0.12);
    color: var(--text-secondary);
}

.step-details-modal__atom-pill--insight {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.step-details-modal__atom-pill--constraint {
    background: rgba(107, 114, 128, 0.12);
    color: var(--text-secondary);
}

.step-details-modal__atom-pill--condition,
.step-details-modal__atom-pill--trigger {
    background: rgba(59, 130, 246, 0.12);
    color: var(--color-info, #3b82f6);
}

.step-details-modal__atom-pill--guard {
    background: rgba(245, 158, 11, 0.12);
    color: var(--color-warning, #f59e0b);
}

.step-details-modal__atom-pill--obligation {
    background: rgba(239, 68, 68, 0.12);
    color: var(--color-error, #ef4444);
}

.step-details-modal__atom-pill--prohibition {
    background: rgba(139, 92, 246, 0.12);
    color: #8b5cf6;
}

.step-details-modal__atom-pill--unresolved {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.step-details-modal__atom-text {
    color: var(--text-primary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.step-details-modal__atom[open] .step-details-modal__atom-text {
    display: block;
    -webkit-line-clamp: unset;
    overflow: visible;
}

.step-details-modal__atom-chevron {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    align-self: center;
    transition: transform 0.15s ease;
}

.step-details-modal__atom[open] .step-details-modal__atom-chevron {
    transform: rotate(90deg);
}

.step-details-modal__atom-detail {
    padding: 0 0.75rem 0.625rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    border-top: var(--border-content-default);
    padding-top: 0.5rem;
    margin-top: -1px;
}

.step-details-modal__atom-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.step-details-modal__atom-meta-item {
    display: inline-flex;
    align-items: baseline;
    gap: 0.25rem;
    padding: 1px 6px;
    border-radius: var(--border-radius-sm);
    background: var(--bg-lower);
    color: var(--text-secondary);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
}

.step-details-modal__atom-key {
    color: var(--text-muted);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
}