/* surfaces-classroom-detail.css — Classroom detail view, roster overrides, dirty bar, description, toast
   Extracted from surfaces.css per P5.3 refactor 2026-05-24 */

/* ── Classroom detail view shell ── */
.classroom-detail-view .classroom-detail-shell {
    max-width: 1180px;
    margin: 0 auto;
    gap: var(--space-8);
}

.classroom-detail-view .classroom-detail-header {
    align-items: center;
}

.classroom-detail-view .classroom-detail-heading-wrap {
    min-width: 0;
}

.classroom-detail-view .students-directory-title {
    color: var(--primary);
    font-size: clamp(30px, 3vw, 36px);
    font-weight: var(--weight-extrabold);
}

.classroom-detail-view .students-directory-subtitle {
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    color: var(--on-surface-variant);
}

.classroom-detail-view .classroom-detail-hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.classroom-detail-view .classroom-detail-hero-card {
    min-height: 120px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.classroom-detail-view .classroom-detail-hero-card--tutor {
    background: var(--surface-container-lowest);
}

.classroom-detail-view .classroom-detail-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-bottom: var(--space-2);
}

.classroom-detail-view .classroom-breadcrumb-link {
    background: none;
    border: none;
    padding: 0;
    font-size: 13px;
    color: var(--primary);
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.classroom-detail-view .classroom-breadcrumb-sep {
    font-size: 13px;
    color: var(--on-surface-variant);
}

.classroom-detail-view .classroom-breadcrumb-current {
    font-size: 13px;
    color: var(--on-surface-variant);
}

.classroom-detail-view .classroom-detail-id-subtitle {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.classroom-detail-view .classroom-id-copy-btn {
    background: none;
    border: none;
    padding: 0 2px;
    font-size: 13px;
    color: var(--on-surface-variant);
    cursor: pointer;
    line-height: 1;
}

.classroom-detail-view .classroom-id-copy-btn:hover {
    color: var(--primary);
}

.classroom-detail-view .classroom-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: var(--space-8);
    align-items: start;
}

.classroom-detail-view .classroom-detail-summary,
.classroom-detail-view .classroom-detail-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    background: var(--surface-container-lowest);
    border: var(--ghost-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--space-8);
}

.classroom-detail-view .classroom-detail-summary {
    justify-content: flex-start;
    min-height: 320px;
    background: linear-gradient(165deg, var(--surface-container-low) 0%, var(--surface-container-lowest) 70%);
}

.classroom-detail-view .classroom-summary-title {
    margin: 0;
    color: var(--on-surface);
    font-family: var(--font-headline);
    font-size: var(--text-h2);
    font-weight: var(--weight-bold);
}

.classroom-detail-view .classroom-detail-summary-text {
    color: var(--on-surface);
    font-size: var(--text-body);
    line-height: 1.6;
    max-width: 50ch;
}

.classroom-detail-view .classroom-summary-meta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    margin-top: var(--space-2);
}

.classroom-detail-view .classroom-summary-meta-card {
    border: 1px solid color-mix(in srgb, var(--outline-variant) 18%, transparent);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--surface-container-lowest) 78%, var(--surface-container-low));
    padding: var(--space-3);
}

.classroom-detail-view .classroom-summary-meta-label {
    margin: 0;
    color: var(--outline);
    font-size: 10px;
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
}

.classroom-detail-view .classroom-summary-meta-value {
    margin: var(--space-2) 0 0;
    color: var(--on-surface);
    font-weight: var(--weight-bold);
    font-size: var(--text-sm);
}

.classroom-detail-view .classroom-detail-actions {
    gap: var(--space-5);
}

.classroom-detail-view .classroom-manage-status {
    margin: 0;
    font-size: var(--text-sm);
}

.classroom-detail-view .classroom-action-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding-top: var(--space-5);
    border-top: 1px solid color-mix(in srgb, var(--outline-variant) 16%, transparent);
}

.classroom-detail-view .classroom-action-section:first-of-type {
    border-top: none;
    padding-top: 0;
}

.classroom-detail-view .classroom-action-label {
    color: var(--outline);
    font-weight: var(--weight-bold);
    font-size: 11px;
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
}

.classroom-detail-view .students-directory-search-input {
    min-height: 46px;
    border-radius: 12px;
    background: var(--surface-container-low);
    width: 100%;
}

.classroom-detail-view .classroom-roster-list {
    max-height: 280px;
    background: color-mix(in srgb, var(--surface-container-low) 32%, transparent);
    border-radius: var(--radius-lg);
    padding: var(--space-2);
}

.classroom-detail-view .classroom-roster-item {
    justify-content: space-between;
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    background: var(--surface-container-lowest);
    border: 1px solid color-mix(in srgb, var(--outline-variant) 18%, transparent);
}

.classroom-detail-view .classroom-roster-identity {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.classroom-detail-view .classroom-roster-student-name {
    color: var(--on-surface);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    line-height: 1.2;
}

.classroom-detail-view .classroom-roster-student-level {
    color: var(--on-surface-variant);
    font-size: 10px;
    font-weight: var(--weight-medium);
    line-height: 1.2;
}

.classroom-detail-view .classroom-roster-checkbox {
    flex: 0 0 auto;
}

.classroom-detail-view .classroom-roster-item:hover {
    background: var(--surface-container-low);
}

.classroom-detail-view .classroom-roster-checkbox:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.classroom-detail-view .classroom-roster-item:focus-within {
    background: var(--surface-container-low);
    border-radius: var(--radius-sm);
}

.classroom-detail-view .classroom-rename-row {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.classroom-detail-view .classroom-rename-row .students-directory-search-input {
    flex: 1;
}

.classroom-detail-view .classroom-rename-save-btn {
    flex-shrink: 0;
    white-space: nowrap;
}

.classroom-detail-view .classroom-roster-toggle-btn {
    appearance: none;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: var(--outline);
    font-weight: var(--weight-bold);
    font-size: 11px;
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    text-align: left;
}

.classroom-detail-view .classroom-roster-toggle-btn:hover {
    color: var(--primary);
}

.classroom-detail-view .classroom-roster-collapsible[hidden] {
    display: none;
}

.classroom-detail-view .classroom-roster-collapsible {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.classroom-detail-view .classroom-enrolled-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.classroom-detail-view .classroom-enrolled-chip {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-2);
    background: color-mix(in srgb, var(--surface-container-low) 32%, transparent);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
}

.classroom-detail-view .classroom-enrolled-name {
    color: var(--on-surface);
    font-weight: var(--weight-medium);
    flex: 1;
}

.classroom-detail-view .classroom-enrolled-level {
    color: var(--on-surface-variant);
    font-size: var(--text-xs);
    padding: 1px var(--space-2);
    background: color-mix(in srgb, var(--outline-variant) 20%, transparent);
    border-radius: 99px;
    white-space: nowrap;
}

.classroom-detail-view .classroom-lifecycle-divider {
    border: none;
    border-top: 1px solid var(--outline-variant);
    margin: var(--space-4) 0;
}

.classroom-detail-view .classroom-danger-label {
    color: var(--error, #b91c1c);
    margin-bottom: var(--space-2);
}

.classroom-detail-view .classroom-full-width-btn {
    width: 100%;
}

.classroom-detail-view .classroom-lifecycle-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
}

.classroom-detail-view .classroom-force-box {
    background: color-mix(in srgb, var(--error) 10%, var(--surface-container-lowest));
    border: 1px solid color-mix(in srgb, var(--error) 24%, var(--outline-variant));
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.classroom-detail-view .classroom-force-hint {
    margin: 0 0 var(--space-3);
    color: var(--error);
    font-size: var(--text-xs);
    line-height: 1.5;
    font-weight: var(--weight-medium);
}

.classroom-detail-view .classroom-force-controls {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-3);
}

.classroom-detail-view .classroom-force-token-input {
    background: var(--surface-container-lowest);
}

/* ── Detail-shell roster identity overrides ── */
.classroom-detail-shell .classroom-roster-identity {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.classroom-detail-shell .classroom-roster-student-name {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--on-surface);
    line-height: 1.2;
}

.classroom-detail-shell .classroom-roster-student-level {
    font-size: 10px;
    font-weight: var(--weight-medium);
    color: var(--on-surface-variant);
    line-height: 1.2;
}

/* ── Dirty bar (unsaved changes indicator) ── */
.classroom-detail-view .classroom-dirty-bar {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--surface-container);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--on-surface-variant);
    margin-bottom: var(--space-4);
}

.classroom-detail-view .classroom-dirty-bar[hidden] {
    display: none;
}

.classroom-detail-view .classroom-dirty-leave-btn {
    background: none;
    border: none;
    padding: 0;
    font-size: 13px;
    color: var(--error, #b91c1c);
    cursor: pointer;
    text-decoration: underline;
}

.classroom-detail-view .classroom-dirty-stay-btn {
    background: none;
    border: none;
    padding: 0;
    font-size: 13px;
    color: var(--primary);
    cursor: pointer;
    text-decoration: underline;
}

/* ── Inline description editor ── */
.classroom-detail-view .classroom-description-display {
    font-size: 14px;
    color: var(--on-surface);
    cursor: pointer;
    border-radius: var(--radius-sm);
    padding: var(--space-2);
    margin-bottom: var(--space-3);
    border: 1px dashed transparent;
    transition: border-color 0.15s ease;
    min-height: 40px;
}

.classroom-detail-view .classroom-description-display:hover {
    border-color: var(--outline-variant);
}

.classroom-detail-view .classroom-description-placeholder {
    color: var(--on-surface-variant);
    font-style: italic;
}

.classroom-detail-view .classroom-description-textarea {
    width: 100%;
    resize: vertical;
    margin-bottom: var(--space-2);
}

.classroom-detail-view .classroom-description-actions {
    display: flex;
    gap: var(--space-2);
}

/* ── Responsive: detail view breakpoint ── */
@media (max-width: 980px) {
    .classroom-detail-view .classroom-detail-layout {
        grid-template-columns: 1fr;
    }

    .classroom-detail-view .classroom-detail-hero-grid,
    .classroom-detail-view .classroom-detail-stats,
    .classroom-detail-view .classroom-summary-meta-grid,
    .classroom-detail-view .classroom-lifecycle-row,
    .classroom-detail-view .classroom-force-controls {
        grid-template-columns: 1fr;
    }

    .classroom-detail-view .classroom-detail-summary,
    .classroom-detail-view .classroom-detail-actions {
        padding: var(--space-6);
    }
}