/* surfaces-classrooms.css — Classrooms directory card actions, classroom create view, shared roster
   Extracted from surfaces.css per P5.3 refactor 2026-05-24 */

/* ── Classrooms directory view card actions ── */
.classrooms-directory-view .classrooms-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.classrooms-directory-view .classrooms-card-footer {
    border-top: 1px solid color-mix(in srgb, var(--outline-variant) 12%, transparent);
    margin-top: var(--space-4);
    padding-top: var(--space-3);
}

.classrooms-directory-view .classrooms-card-actions-label {
    margin: 0 0 var(--space-2);
    color: var(--on-surface-variant);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.classrooms-directory-view .classrooms-card-action-btn {
    flex: 1 1 auto;
    min-height: 38px;
    padding: 0 var(--space-3);
}

.classrooms-directory-view .classrooms-card-action-btn--danger {
    border-color: color-mix(in srgb, var(--error) 45%, var(--outline-variant));
    color: var(--error);
}

.classrooms-directory-view .classrooms-card-action-btn--danger:hover {
    background: color-mix(in srgb, var(--error) 16%, transparent);
    color: var(--error);
}

/* ── Shared classroom roster (used by both detail and create views) ── */
.classroom-roster-list {
    width: 100%;
    max-height: 220px;
    overflow: auto;
    border: var(--ghost-border);
    border-radius: var(--radius-md);
    background: var(--surface-container-lowest);
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.classroom-roster-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--on-surface);
    font-size: var(--text-sm);
}

.classroom-roster-checkbox {
    width: 16px;
    height: 16px;
}

/* ── Create classroom card ── */
.classroom-create-view .classroom-create-card {
    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);
    max-width: 920px;
    margin: 0 auto;
}

.classroom-create-view .classroom-create-card-header {
    margin: 0 0 var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid color-mix(in srgb, var(--outline-variant) 16%, transparent);
    color: var(--on-surface);
    font-family: var(--font-headline);
    font-size: var(--text-h3);
    font-weight: var(--weight-bold);
}

.classroom-create-view .classroom-create-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
}

.classroom-create-view .form-field {
    position: relative;
    display: flex;
    flex-direction: column;
}

.classroom-create-view .form-field-label {
    position: absolute;
    left: var(--space-3);
    top: 25%;
    transform: translateY(-50%);
    font-size: var(--text-sm);
    color: var(--on-surface-variant);
    pointer-events: none;
    transition: top 0.15s ease, font-size 0.15s ease, color 0.15s ease;
}

/* Float label up when input is focused or filled */
.classroom-create-view .students-directory-search-input:not(:placeholder-shown) ~ .form-field-label,
.classroom-create-view .students-directory-search-input:focus ~ .form-field-label {
    top: 0;
    font-size: 10px;
    color: var(--primary, #3b6fd4);
    background: var(--surface-container-lowest);
    padding: 0 4px;
}

.classroom-create-view .form-field-required {
    color: var(--error, #b91c1c);
}

.classroom-create-view .classroom-create-name-field {
    grid-column: 1 / -1;
}

.classroom-create-view .form-field-counter {
    align-self: flex-end;
    margin-top: var(--space-1);
    font-size: 10px;
    color: var(--on-surface-variant);
    line-height: 1;
}

.classroom-create-view .form-field-counter--warn {
    color: var(--warning, #d97706);
}

.classroom-create-view .form-field-counter--over {
    color: var(--error, #b91c1c);
}

.classroom-create-view .form-field-error {
    display: none;
    margin-top: var(--space-1);
    font-size: 11px;
    color: var(--error, #b91c1c);
    line-height: 1.3;
}

.classroom-create-view .form-field-error:not(:empty) {
    display: block;
}

.students-directory-search-input--error {
    border-color: var(--error, #b91c1c) !important;
    outline-color: var(--error, #b91c1c);
}

.classroom-create-view .classroom-create-roster-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

/* Prevent display:flex from overriding the [hidden] attribute */
.classroom-create-view .classroom-create-roster-panel[hidden],
.classroom-create-view .classroom-create-selected-summary[hidden] {
    display: none;
}

.classroom-create-view .classroom-create-roster-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
}

.classroom-create-view .form-field-label-static {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--on-surface);
}

.classroom-create-view .classroom-create-roster-count {
    font-size: 11px;
    color: var(--outline);
}

.classroom-create-view .classroom-create-roster-count-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.classroom-create-view .classroom-create-tutor-clear {
    font-size: 11px;
    color: var(--primary, #3b6fd4);
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    text-decoration: underline;
}

.classroom-create-view .classroom-create-tutor-panel .classroom-roster-item--selected {
    background: color-mix(in srgb, var(--primary, #3b6fd4) 10%, transparent);
    border-radius: var(--radius-sm);
}

.classroom-create-view .classroom-roster-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.classroom-create-tutor-badge {
    font-size: 10px;
    color: var(--outline);
    margin-left: var(--space-2);
}

.classroom-create-view .form-field-legend {
    grid-column: 1 / -1;
    font-size: 11px;
    margin: 0;
}

.classroom-create-view .classroom-create-footer {
    grid-column: 1 / -1;
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

.classroom-create-view .classroom-create-footer .students-directory-add-btn {
    flex: 1;
}

.classroom-create-view .classroom-create-footer .secondary-btn {
    min-height: 46px;
    padding-left: var(--space-5);
    padding-right: var(--space-5);
}

.classroom-create-view .classroom-create-selected-summary {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: color-mix(in srgb, var(--primary, #3b6fd4) 6%, transparent);
    border-radius: var(--radius-md);
    border: 1px solid color-mix(in srgb, var(--primary, #3b6fd4) 15%, transparent);
}

.classroom-create-view .classroom-create-summary-label {
    font-size: var(--text-xs);
    color: var(--on-surface-variant);
    font-weight: var(--weight-medium);
    flex: 0 0 auto;
    white-space: nowrap;
}

.classroom-create-view .classroom-create-summary-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px var(--space-2);
    background: var(--surface-container-lowest);
    border: 1px solid color-mix(in srgb, var(--primary, #3b6fd4) 25%, transparent);
    border-radius: 99px;
    font-size: var(--text-xs);
}

.classroom-create-view .classroom-create-summary-chip-name {
    color: var(--on-surface);
    font-weight: var(--weight-medium);
}

.classroom-create-view .classroom-create-summary-chip-level {
    color: var(--on-surface-variant);
}

.classroom-create-view .classroom-create-summary-chip-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    border: none;
    background: none;
    padding: 0;
    cursor: pointer;
    color: var(--on-surface-variant);
    font-size: 12px;
    line-height: 1;
    border-radius: 99px;
}

.classroom-create-view .classroom-create-summary-chip-remove:hover {
    background: color-mix(in srgb, var(--error, #b91c1c) 12%, transparent);
    color: var(--error, #b91c1c);
}

.classroom-create-view .classroom-create-status {
    font-size: var(--text-sm);
    color: var(--on-surface-variant);
    min-height: 1.5em;
    margin-top: var(--space-2);
    text-align: center;
}

.classroom-create-view .classroom-create-status--success {
    color: var(--primary, #3b6fd4);
    font-weight: var(--weight-semibold);
}

/* ── Create-view roster item overrides ── */
.classroom-create-view .classroom-roster-item {
    justify-content: space-between;
    padding: var(--space-1) 0;
}

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

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

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

.classroom-create-view .students-directory-search-input {
    width: 100%;
}

/* ── Classroom toast notification ── */
.classroom-toast {
    position: fixed;
    right: 20px;
    bottom: 24px;
    padding: 10px 16px;
    border-radius: var(--radius-md, 8px);
    background: #111827;
    color: #ffffff;
    font-size: 13px;
    box-shadow: var(--shadow-md);
    z-index: var(--z-toast, 80);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
}

.classroom-toast.is-visible {
    opacity: 1;
    transform: translateY(0);
}

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

    .classroom-create-view .classroom-create-name-field,
    .classroom-create-view .classroom-create-roster-panel,
    .classroom-create-view .classroom-create-selected-summary,
    .classroom-create-view .classroom-create-footer,
    .classroom-create-view .form-field-legend {
        grid-column: 1 / -1;
    }
}