/* Shared action primitives (MUST-03) */

.tb-button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--tb-space-2);
    min-height: var(--tb-button-height-md);
    padding: 0 var(--tb-space-4);
    border-radius: var(--tb-radius-md);
    border: 1px solid transparent;
    background: var(--tb-color-surface);
    color: var(--tb-color-text);
    font-family: var(--tb-font-family);
    font-size: var(--tb-font-size-sm);
    font-weight: var(--tb-font-weight-semibold);
    line-height: var(--tb-line-height-dense);
    text-decoration: none;
    vertical-align: middle;
    text-align: center;
    cursor: pointer;
    transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease, box-shadow 120ms ease;
}

.tb-button:hover,
.btn:hover {
    text-decoration: none;
}

.tb-button:disabled,
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.tb-button--primary,
.btn-primary {
    background: var(--tb-color-accent);
    border-color: var(--tb-color-accent);
    color: var(--tb-color-white);
    box-shadow: var(--tb-shadow-sm);
}

.tb-button--primary:hover,
.btn-primary:hover {
    background: var(--tb-color-accent-hover);
    border-color: var(--tb-color-accent-hover);
    color: var(--tb-color-white);
}

.tb-button--secondary,
.btn-secondary {
    background: var(--tb-color-surface);
    border-color: var(--tb-color-border);
    color: var(--tb-color-text);
}

.tb-button--secondary:hover,
.btn-secondary:hover {
    background: var(--tb-color-surface-muted);
}

.tb-button--ghost {
    background: transparent;
    border-color: transparent;
    color: var(--tb-color-text);
}

.tb-button--ghost:hover {
    background: var(--tb-color-surface-muted);
}

.btn-outline {
    background: transparent;
    border-color: var(--tb-color-accent);
    color: var(--tb-color-accent);
}

.btn-outline:hover {
    background: var(--tb-color-accent);
    border-color: var(--tb-color-accent);
    color: var(--tb-color-white);
}

.tb-button--danger,
.btn-danger {
    background: var(--tb-color-danger);
    border-color: var(--tb-color-danger);
    color: var(--tb-color-white);
}

.tb-button--danger:hover,
.btn-danger:hover {
    background: var(--tb-color-danger-strong);
    border-color: var(--tb-color-danger-strong);
}

.btn-outline-danger {
    background: transparent;
    border-color: var(--tb-color-danger);
    color: var(--tb-color-danger);
}

.btn-outline-danger:hover {
    background: var(--tb-color-danger);
    color: var(--tb-color-white);
}

.tb-button--sm,
.btn-sm {
    min-height: var(--tb-button-height-sm);
    padding: 0 var(--tb-space-3);
    font-size: var(--tb-font-size-xs);
}

.tb-button--lg {
    min-height: var(--tb-button-height-lg);
    padding: 0 var(--tb-space-5);
    font-size: var(--tb-font-size-md);
}

.btn-min-w {
    min-width: 120px;
}

.btn-inline-icon {
    display: inline-flex;
    align-items: center;
    gap: var(--tb-space-2);
}

.btn-inline-icon svg {
    width: 16px;
    height: 16px;
}

.tb-icon-button,
.btn-icon,
.btn-icon-square,
.btn-icon-round {
    width: var(--tb-touch-target);
    height: var(--tb-touch-target);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--tb-radius-md);
    border: 1px solid transparent;
    background: transparent;
    color: var(--tb-color-text-muted);
    cursor: pointer;
    text-decoration: none;
    transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

.tb-icon-button:hover,
.btn-icon:hover,
.btn-icon-square:hover,
.btn-icon-round:hover {
    background: var(--tb-color-surface-muted);
    color: var(--tb-color-text);
}

.tb-icon-button svg,
.btn-icon svg {
    width: 20px;
    height: 20px;
}

.btn-icon-square {
    background: var(--tb-color-surface);
    border-color: var(--tb-color-border);
}

.btn-icon-square svg,
.btn-icon-round svg {
    width: 18px;
    height: 18px;
}

.btn-icon-round {
    border-radius: var(--tb-radius-round);
}

.tb-icon-button--danger,
.btn-icon-danger,
.btn-danger-icon {
    color: var(--tb-color-danger);
}

.tb-icon-button--danger:hover,
.btn-icon-danger:hover,
.btn-danger-icon:hover {
    background: var(--tb-color-danger-soft);
    color: var(--tb-color-danger-strong);
}

.tb-icon-button.is-active {
    background: transparent;
    color: var(--tb-color-accent);
}

.tb-icon-button.is-active:hover {
    background: var(--tb-color-surface-muted);
    color: var(--tb-color-accent-hover);
}

.tb-icon-button--accent,
.btn-icon.tb-icon-button--accent,
.btn-icon-square.tb-icon-button--accent,
.btn-icon-round.tb-icon-button--accent {
    background: var(--tb-color-accent);
    border-color: var(--tb-color-accent);
    color: var(--tb-color-white);
    box-shadow: var(--tb-shadow-sm);
}

.tb-icon-button--accent:hover,
.btn-icon.tb-icon-button--accent:hover,
.btn-icon-square.tb-icon-button--accent:hover,
.btn-icon-round.tb-icon-button--accent:hover {
    background: var(--tb-color-accent-hover);
    border-color: var(--tb-color-accent-hover);
    color: var(--tb-color-white);
}

.tb-fab,
.fab {
    position: fixed;
    right: 20px;
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    width: var(--tb-fab-size);
    height: var(--tb-fab-size);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: var(--tb-radius-fab);
    background: var(--tb-color-accent);
    color: var(--tb-color-white);
    box-shadow: var(--tb-shadow-md);
    text-decoration: none;
    cursor: pointer;
    z-index: 1000;
    transition: background-color 120ms ease, transform 120ms ease;
}

.tb-fab:hover,
.fab:hover {
    background: var(--tb-color-accent-hover);
    color: var(--tb-color-white);
    transform: scale(1.04);
}

.tb-fab svg,
.fab svg {
    width: 24px;
    height: 24px;
}

.tb-fab--compact {
    width: var(--tb-fab-size-compact);
    height: var(--tb-fab-size-compact);
}

.tb-chip,
.timeline-filter-btn {
    min-height: var(--tb-chip-height);
    padding: 0 var(--tb-space-3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--tb-space-1);
    border-radius: var(--tb-radius-round);
    border: 1px solid var(--tb-color-border);
    background: var(--tb-color-surface);
    color: var(--tb-color-text);
    font-size: var(--tb-font-size-sm);
    font-weight: var(--tb-font-weight-medium);
    line-height: var(--tb-line-height-normal);
    cursor: pointer;
    transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.tb-chip:hover,
.timeline-filter-btn:hover {
    background: var(--tb-color-surface-muted);
}

.tb-chip--active,
.tb-chip[aria-pressed="true"],
.timeline-filter-btn.is-active,
.timeline-filter-btn[aria-pressed="true"] {
    background: var(--tb-color-accent-soft);
    border-color: var(--tb-color-success-border-soft);
    color: var(--tb-color-success-strong);
}

.tb-segmented {
    display: inline-flex;
    align-items: center;
    gap: var(--tb-space-1);
    padding: var(--tb-space-1);
    border-radius: var(--tb-radius-md);
    border: 1px solid var(--tb-color-border);
    background: var(--tb-color-surface-muted);
}

.tb-segmented__item {
    min-height: var(--tb-button-height-sm);
    padding: 0 var(--tb-space-3);
    border-radius: var(--tb-radius-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-sm);
    font-weight: var(--tb-font-weight-medium);
    cursor: pointer;
    transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.tb-segmented__item:hover {
    color: var(--tb-color-text);
}

.tb-segmented__item--active,
.tb-segmented__item[aria-pressed="true"] {
    background: var(--tb-color-surface);
    border-color: var(--tb-color-border);
    color: var(--tb-color-text);
    box-shadow: var(--tb-shadow-sm);
}

.tb-button:focus-visible,
.tb-icon-button:focus-visible,
.tb-fab:focus-visible,
.tb-chip:focus-visible,
.tb-segmented__item:focus-visible,
.btn:focus-visible,
.btn-icon:focus-visible,
.btn-icon-square:focus-visible,
.btn-icon-round:focus-visible,
.fab:focus-visible,
.timeline-filter-btn:focus-visible {
    outline: 2px solid var(--tb-color-focus);
    outline-offset: 2px;
}

/* Alert primitives */
.tb-alert {
    padding: var(--tb-space-4);
    border-radius: var(--tb-radius-md);
    margin-bottom: var(--tb-space-4);
    background-color: var(--tb-color-danger-soft);
    color: var(--tb-color-danger);
    border: 1px solid var(--tb-color-danger-border);
    font-size: var(--tb-font-size-sm);
}

.tb-alert--success {
    background-color: var(--tb-color-success-soft);
    color: var(--tb-color-success);
    border-color: var(--tb-color-success-border);
}

.tb-alert--danger {
    background-color: var(--tb-color-danger-soft);
    color: var(--tb-color-danger);
    border-color: var(--tb-color-danger-border);
}

.tb-alert--warning {
    background-color: var(--tb-color-warning-soft);
    color: var(--tb-color-warning);
    border-color: var(--tb-color-warning-border);
}

/* Alert met inline actie (bv. read-only seizoensbanner met terug-knop). */
.tb-alert--with-action {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--tb-space-3);
    flex-wrap: wrap;
}

.tb-alert__action {
    background: none;
    border: none;
    padding: 0;
    color: inherit;
    font: inherit;
    font-weight: 600;
    text-decoration: underline;
    cursor: pointer;
}

.tb-alert__action:focus-visible {
    outline: 2px solid var(--tb-color-focus);
    outline-offset: 2px;
}

/* Card primitives */
.tb-card {
    background-color: var(--tb-color-surface);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-md);
    padding: var(--tb-space-4);
    margin-bottom: var(--tb-space-4);
    box-shadow: var(--tb-shadow-sm);
}

/* Accent-variant: subtiel gemarkeerde kaart (bijv. toelichting van de
   coördinator). Zachte accentachtergrond + accentrand links. */
.tb-card--accent {
    background-color: var(--tb-color-accent-soft);
    border-color: var(--tb-color-accent-soft-strong);
    border-left: var(--tb-space-1) solid var(--tb-color-accent);
}

/* V3 content primitives */
.tb-v3-page-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--tb-space-4);
    margin-bottom: var(--tb-space-4);
}

.tb-v3-page-head__title {
    margin: 0;
}

.tb-v3-page-head__subtitle {
    margin: var(--tb-space-2) 0 0;
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-sm);
}

.tb-v3-page-head__meta {
    margin: var(--tb-space-2) 0 0;
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-xs);
}

.tb-v3-page-head__lead {
    display: flex;
    align-items: stretch;
    gap: var(--tb-space-3);
}

.tb-v3-page-head__lead-body {
    display: flex;
    align-items: center;
}

.tb-v3-page-head__actions {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--tb-space-2);
}

.tb-v3-action-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--tb-space-2);
    margin-bottom: var(--tb-space-4);
}

.tb-v3-form {
    display: flex;
    flex-direction: column;
    gap: var(--tb-space-4);
}

.tb-v3-form-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--tb-space-4);
}

.tb-v3-field {
    display: flex;
    flex-direction: column;
    gap: var(--tb-space-2);
    min-width: 0;
}

.tb-v3-field[hidden] {
    /* `display: flex` hierboven overschrijft de UA-default voor [hidden];
       deze regel zorgt dat het hidden-attribute alsnog werkt. */
    display: none;
}

.tb-v3-field__label {
    font-size: var(--tb-font-size-sm);
    font-weight: var(--tb-font-weight-semibold);
    color: var(--tb-color-text);
}

.tb-v3-field__hint {
    margin: 0;
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text-muted);
}

.tb-v3-field__error {
    margin: 0;
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-danger);
}

.tb-v3-field ul.errorlist {
    margin: 0;
    padding-left: var(--tb-space-4);
    color: var(--tb-color-danger);
    font-size: var(--tb-font-size-xs);
}

.tb-control {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    min-height: var(--tb-button-height-md);
    padding: 0 var(--tb-space-3);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-md);
    background: var(--tb-color-surface);
    color: var(--tb-color-text);
    font-size: var(--tb-font-size-sm);
    line-height: var(--tb-line-height-comfortable);
    transition: border-color 120ms ease, box-shadow 120ms ease, background-color 120ms ease;
}

textarea.tb-control {
    min-height: 112px;
    padding: var(--tb-space-3);
    resize: vertical;
}

input[type="date"].tb-control,
input[type="time"].tb-control,
input[type="datetime-local"].tb-control,
input[type="month"].tb-control,
input[type="week"].tb-control {
    -webkit-appearance: none;
    appearance: none;
}

.tb-control:hover {
    border-color: var(--tb-color-border-strong);
}

.tb-control:focus-visible {
    outline: 2px solid var(--tb-color-focus);
    outline-offset: 1px;
}

.tb-v3-table-wrap {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-md);
    background: var(--tb-color-surface);
}

.tb-v3-table {
    width: 100%;
    min-width: 640px;
    border-collapse: collapse;
}

.tb-v3-table thead th {
    padding: var(--tb-space-3);
    text-align: left;
    font-size: var(--tb-font-size-xs);
    font-weight: var(--tb-font-weight-semibold);
    color: var(--tb-color-text-muted);
    border-bottom: 1px solid var(--tb-color-border);
    background: var(--tb-color-surface-alt);
    white-space: nowrap;
}

.tb-v3-table tbody th,
.tb-v3-table tbody td {
    padding: var(--tb-space-3);
    border-bottom: 1px solid var(--tb-color-border);
    vertical-align: top;
    font-size: var(--tb-font-size-sm);
}

.tb-v3-table tbody th {
    text-align: left;
    font-weight: var(--tb-font-weight-semibold);
    color: var(--tb-color-text);
}

.tb-v3-table tbody tr:last-child th,
.tb-v3-table tbody tr:last-child td {
    border-bottom: 0;
}

.tb-v3-table__link {
    color: var(--tb-color-accent);
    font-weight: var(--tb-font-weight-semibold);
    text-decoration: none;
}

.tb-v3-table__link:hover {
    color: var(--tb-color-accent-hover);
    text-decoration: underline;
}

.tb-v3-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--tb-space-2);
}

.tb-v3-list__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--tb-space-3);
    width: 100%;
    padding: var(--tb-space-3);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-md);
    text-decoration: none;
    color: var(--tb-color-text);
    background: var(--tb-color-surface);
    transition: border-color 120ms ease, background-color 120ms ease, transform 120ms ease;
}

.tb-v3-list__item:hover {
    border-color: var(--tb-color-border-strong);
    background: var(--tb-color-surface-muted);
    transform: translateY(-1px);
}

.tb-v3-list__item:focus-visible {
    outline: 2px solid var(--tb-color-focus);
    outline-offset: 2px;
}

.tb-v3-list__main {
    min-width: 0;
}

.tb-v3-list__content {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--tb-space-3);
    min-width: 0;
}

.tb-v3-list__icon {
    width: 36px;
    height: 36px;
    border-radius: var(--tb-radius-md);
    border: 1px solid var(--tb-color-border);
    background: var(--tb-color-surface-muted);
    color: var(--tb-color-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tb-v3-list__title {
    display: block;
    margin: 0;
    font-weight: var(--tb-font-weight-semibold);
}

.tb-v3-list__meta {
    display: block;
    margin: var(--tb-space-1) 0 0;
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-xs);
}

.tb-v3-list__end {
    flex-shrink: 0;
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-xs);
}

/* Body-link binnen een kaart (klikt door naar detail) */
.tb-v3-list__body {
    flex: 1;
    min-width: 0;
    text-decoration: none;
    color: inherit;
}

/* Statistieken-rij onderaan de kaart */
.tb-v3-list__stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--tb-space-3);
    margin-top: var(--tb-space-2);
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-xs);
}

/* Acties (bewerken / verwijderen) rechts in de kaart */
.tb-v3-list__actions {
    display: flex;
    align-items: center;
    gap: var(--tb-space-1);
    flex-shrink: 0;
}

.tb-v3-inline-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--tb-space-2);
    margin-top: var(--tb-space-4);
}

/* Cohort planning cards */
.tb-plan-sessions {
    margin-bottom: var(--tb-space-4);
}

.tb-plan-sessions__head {
    margin-bottom: var(--tb-space-3);
}

.tb-plan-sessions__head h2 {
    margin: 0;
}

.tb-plan-session-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--tb-space-3);
    margin-bottom: var(--tb-space-4);
}

.tb-plan-session-card {
    display: flex;
    flex-direction: column;
    gap: var(--tb-space-3);
    margin-bottom: 0;
}

.tb-plan-session-card__header,
.tb-plan-session-card__meta,
.tb-plan-session-card__actions,
.tb-plan-session-card__move-form,
.tb-plan-session-card__title,
.tb-plan-session-card__status,
.tb-plan-session-card__move summary {
    display: flex;
    align-items: center;
}

.tb-plan-session-card__header {
    justify-content: space-between;
    gap: var(--tb-space-3);
}

.tb-plan-session-card__title {
    min-width: 0;
    gap: var(--tb-space-2);
}

.tb-plan-session-card__title svg {
    color: var(--tb-color-accent);
    flex-shrink: 0;
}

.tb-plan-session-card__title strong {
    min-width: 0;
    overflow-wrap: anywhere;
}

.tb-plan-session-card__actions {
    flex-shrink: 0;
    gap: var(--tb-space-1);
}

.tb-plan-session-card__actions form {
    margin: 0;
}

.tb-plan-session-card__meta {
    flex-wrap: wrap;
    gap: var(--tb-space-3);
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-sm);
}

.tb-plan-session-card__meta span,
.tb-plan-session-card__status {
    gap: var(--tb-space-1);
}

.tb-plan-session-card__status {
    color: var(--tb-color-danger);
}

.tb-plan-session-card__note {
    margin: 0;
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-sm);
}

.tb-plan-session-card__move {
    border-top: 1px solid var(--tb-color-border);
    padding-top: var(--tb-space-3);
}

.tb-plan-session-card__move summary {
    width: fit-content;
    gap: var(--tb-space-2);
    color: var(--tb-color-text);
    cursor: pointer;
    font-weight: var(--tb-font-weight-semibold);
}

.tb-plan-session-card__move summary::-webkit-details-marker {
    display: none;
}

.tb-plan-session-card__move-form {
    flex-wrap: wrap;
    gap: var(--tb-space-2);
    margin-top: var(--tb-space-3);
}

.tb-plan-session-card__move-form .tb-v3-field {
    flex: 1 1 180px;
    margin-bottom: 0;
}

.tb-plan-session-add {
    max-width: 560px;
}

.tb-plan-session-add h3 {
    margin: 0 0 var(--tb-space-3);
}

@media (max-width: 720px) {
    .tb-v3-page-head {
        flex-direction: column;
    }

    .tb-v3-page-head__actions {
        width: 100%;
        justify-content: flex-start;
    }

    .tb-v3-table {
        min-width: 560px;
    }
}

@media (min-width: 721px) {
    .tb-v3-form-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .tb-plan-session-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* Action Card (clickable card) */
.tb-action-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    text-align: left;
    background-color: var(--tb-color-surface);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-md);
    padding: var(--tb-space-4);
    margin-bottom: var(--tb-space-4);
    box-shadow: var(--tb-shadow-sm);
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease;
    text-decoration: none;
    color: var(--tb-color-text);
    font-family: inherit;
    font-size: inherit;
}

.tb-action-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px var(--tb-color-shadow-card-hover);
    text-decoration: none;
    color: var(--tb-color-text);
}

.tb-action-card:focus-visible {
    outline: 2px solid var(--tb-color-focus);
    outline-offset: 2px;
    transform: translateY(-2px);
    box-shadow: 0 4px 6px var(--tb-color-shadow-card-hover);
}

.tb-action-card h2, .tb-action-card h3 {
    margin-top: 0;
    margin-bottom: 0.25rem;
    font-size: var(--tb-font-size-lg);
}

.tb-action-card p {
    margin: 0;
    color: var(--tb-color-text-muted);
}

.tb-action-card svg {
    color: var(--tb-color-text-muted);
    flex-shrink: 0;
}

.tb-action-card:hover svg {
    color: var(--tb-color-accent);
}

/* Modal primitives */
.tb-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--tb-color-overlay-50);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.tb-modal-overlay.active {
    display: flex;
}

.tb-modal {
    background-color: var(--tb-color-surface);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    border-radius: var(--tb-radius-md);
    padding: var(--tb-space-6);
    box-shadow: var(--tb-shadow-md);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    position: relative;
    animation: tb-modal-slide-in 0.3s ease-out;
}

.tb-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--tb-space-3);
    margin-bottom: var(--tb-space-3);
}

.tb-modal__title {
    margin: 0;
    font-size: var(--tb-font-size-md);
    font-weight: var(--tb-font-weight-bold);
}

.tb-modal__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--tb-space-2);
    margin-top: var(--tb-space-4);
}

@keyframes tb-modal-slide-in {
    from { transform: translateY(20px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}

/* Dropdown primitives */
.tb-dropdown {
    position: relative;
    display: inline-block;
}

.tb-dropdown__content {
    display: none;
    position: absolute;
    right: 0;
    background-color: var(--tb-color-surface);
    min-width: 180px;
    box-shadow: var(--tb-shadow-sm);
    z-index: 100;
    border-radius: var(--tb-radius-md);
    border: 1px solid var(--tb-color-border);
    margin-top: var(--tb-space-2);
}

.tb-dropdown__content::before {
    content: '';
    position: absolute;
    top: -0.5rem;
    left: 0;
    right: 0;
    height: 0.5rem;
}

.tb-dropdown__content a {
    color: var(--tb-color-text);
    padding: var(--tb-space-3) var(--tb-space-4);
    text-decoration: none;
    display: block;
    transition: background-color 120ms ease;
}

.tb-dropdown__content form {
    margin: 0;
}

.tb-dropdown__button {
    width: 100%;
    border: 0;
    background: transparent;
    color: var(--tb-color-text);
    padding: var(--tb-space-3) var(--tb-space-4);
    text-align: left;
    font: inherit;
    cursor: pointer;
}

.tb-dropdown__content a:hover {
    background-color: var(--tb-color-surface-muted);
}

.tb-dropdown__button:hover {
    background-color: var(--tb-color-surface-muted);
}

.tb-dropdown__content a:focus-visible {
    outline: 2px solid var(--tb-color-focus);
    outline-offset: -2px;
    background-color: var(--tb-color-surface-muted);
}

.tb-dropdown__button:focus-visible {
    outline: 2px solid var(--tb-color-focus);
    outline-offset: -2px;
    background-color: var(--tb-color-surface-muted);
}

.tb-dropdown:hover .tb-dropdown__content,
.tb-dropdown:focus-within .tb-dropdown__content {
    display: block;
}

/* Multi-select primitives.
   Gebouwd op <details>/<summary>: open/dicht werkt zonder JavaScript, en
   multi-select.js vult alleen het label in de gesloten balk met de gekozen
   opties. Valt JS uit, dan blijft het veld gewoon bruikbaar. */
.tb-multi-select-wrapper {
    position: relative;
    width: 100%;
}

.tb-multi-select-trigger {
    width: 100%;
    padding: var(--tb-space-2);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-md);
    font-size: var(--tb-font-size-md);
    font-family: inherit;
    background-color: var(--tb-color-surface);
    cursor: pointer;
    min-height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* Eigen pijltje via ::after; het native driehoekje van <summary> weg. */
    list-style: none;
}

.tb-multi-select-trigger::-webkit-details-marker {
    display: none;
}

.tb-multi-select-trigger:focus-visible {
    outline: 2px solid var(--tb-color-focus);
    outline-offset: 2px;
}

.tb-multi-select-wrapper[open] .tb-multi-select-trigger {
    border-radius: var(--tb-radius-md) var(--tb-radius-md) 0 0;
}

.tb-multi-select-wrapper[open] .tb-multi-select-trigger::after {
    transform: rotate(180deg);
}

/* Zonder selectie toont de balk een placeholder in gedempte tekst. */
.tb-multi-select-trigger__label:empty::before {
    content: attr(data-placeholder);
    color: var(--tb-color-text-muted);
}

.tb-multi-select-trigger::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--tb-color-text-muted);
    margin-left: var(--tb-space-2);
}

.tb-multi-select-options {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: var(--tb-color-surface);
    border: 1px solid var(--tb-color-border);
    border-top: none;
    border-radius: 0 0 var(--tb-radius-md) var(--tb-radius-md);
    max-height: 250px;
    overflow-y: auto;
    box-shadow: var(--tb-shadow-sm);
}

.tb-multi-select-option {
    display: flex;
    align-items: center;
    gap: var(--tb-space-2);
    padding: var(--tb-space-2);
    cursor: pointer;
    font-size: var(--tb-font-size-md);
    border-bottom: 1px solid var(--tb-color-surface-muted);
}

.tb-multi-select-option:last-child {
    border-bottom: none;
}

.tb-multi-select-option:hover {
    background-color: var(--tb-color-surface-muted);
}

/* Checkbox links van het label en meeschalend met de tekstgrootte, zodat hij
   niet als los, te groot element naast de regel staat. */
.tb-multi-select-option input[type="checkbox"] {
    flex: none;
    margin: 0;
    width: 1em;
    height: 1em;
    accent-color: var(--tb-color-accent-strong);
}

.tb-inline-form {
    display: inline;
}

/* Empty state primitive */
.tb-empty-state {
    text-align: center;
    padding: var(--tb-space-8) var(--tb-space-4);
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-sm);
}

.tb-empty-state svg {
    display: block;
    margin: 0 auto var(--tb-space-3);
    width: 48px;
    height: 48px;
    color: var(--tb-color-border);
}

/* ---- Micro-animations (COULD-17) ---- */

/* Shared fade-in keyframe */
@keyframes tb-fade-in {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* P1: Interactive card hover elevation */
a > .tb-card,
button > .tb-card,
.tb-card[onclick] {
    transition: transform 120ms ease, box-shadow 120ms ease;
}
a:hover > .tb-card,
button:hover > .tb-card,
.tb-card[onclick]:hover {
    transform: translateY(-1px);
    box-shadow: var(--tb-shadow-md);
}

/* P2: Alert entrance */
.tb-alert {
    animation: tb-fade-in 300ms ease-out;
}

/* P3: Empty state entrance */
.tb-empty-state {
    animation: tb-fade-in 300ms ease-out;
}

/* P6: FAB entrance bounce */
.tb-fab, .fab {
    animation: tb-fab-enter 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes tb-fab-enter {
    from { transform: scale(0); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

/* P7: Dropdown / multi-select smooth open */
.tb-dropdown:hover .tb-dropdown__content,
.tb-dropdown:focus-within .tb-dropdown__content,
.tb-multi-select-options.open {
    animation: tb-dropdown-enter 150ms ease-out;
}
@keyframes tb-dropdown-enter {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- Exercise search primitives (T27) ---- */

/* Search bar */
.tb-search-bar {
    display: flex;
    align-items: center;
    gap: var(--tb-space-2);
    margin-bottom: var(--tb-space-4);
}

.tb-search-bar__input {
    flex: 1;
}

/* Search suggestions */
.tb-search-suggestions {
    display: flex;
    gap: var(--tb-space-2);
    flex-wrap: wrap;
    margin-bottom: var(--tb-space-4);
}

.tb-search-warnings {
    display: grid;
    gap: var(--tb-space-2);
    margin-bottom: var(--tb-space-3);
}

/* Search result cards */
.tb-search-results {
    display: flex;
    flex-direction: column;
    gap: var(--tb-space-3);
}

.tb-search-result {
    display: flex;
    flex-direction: column;
    gap: var(--tb-space-2);
    padding: var(--tb-space-3) var(--tb-space-4);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-md);
    background: var(--tb-color-surface);
}

.tb-search-result__header {
    display: flex;
    align-items: flex-start;
    gap: var(--tb-space-3);
}

.tb-search-result__thumb {
    flex-shrink: 0;
    width: 88px;
    height: 56px;
    border-radius: var(--tb-radius-sm);
    overflow: hidden;
    background: var(--tb-color-surface-muted);
}

.tb-search-result__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.tb-search-result__body {
    flex: 1;
    min-width: 0;
}

.tb-search-result__title {
    margin: 0 0 var(--tb-space-1);
    font-size: var(--tb-font-size-sm);
    font-weight: var(--tb-font-weight-semibold);
    color: var(--tb-color-text);
    line-height: var(--tb-line-height-comfortable);
}

.tb-search-result__meta {
    margin: 0 0 var(--tb-space-2);
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text-muted);
}

.tb-search-result__snippet {
    margin: 0;
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text-muted);
    line-height: var(--tb-line-height-relaxed);
}

.tb-search-result__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--tb-space-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

.tb-search-result__tag {
    padding: 2px var(--tb-space-2);
    border-radius: var(--tb-radius-sm);
    font-size: var(--tb-font-size-xs);
    background: var(--tb-color-surface-muted);
    color: var(--tb-color-text-muted);
    border: 1px solid var(--tb-color-border);
}

.tb-search-result__reasons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--tb-space-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

.tb-search-result__reason {
    padding: 2px var(--tb-space-2);
    border-radius: var(--tb-radius-sm);
    font-size: var(--tb-font-size-xs);
    background: var(--tb-color-accent-soft);
    color: var(--tb-color-accent-strong);
    border: 1px solid var(--tb-color-accent-soft-strong);
}

.tb-search-result__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--tb-space-2);
    flex-wrap: wrap;
}

.tb-search-result__badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--tb-space-2);
    border-radius: var(--tb-radius-sm);
    font-size: var(--tb-font-size-xs);
    font-weight: var(--tb-font-weight-medium);
    background: var(--tb-color-surface-muted);
    color: var(--tb-color-text-muted);
    border: 1px solid var(--tb-color-border);
}

.tb-search-result__badge--internal {
    background: var(--tb-color-accent-soft);
    color: var(--tb-color-accent-strong);
    border-color: var(--tb-color-accent-soft-strong);
}

.tb-search-result__badge--youtube {
    background: var(--tb-color-danger-soft);
    color: var(--tb-color-danger);
    border-color: var(--tb-color-danger-border);
}

.tb-search-result__actions {
    display: flex;
    gap: var(--tb-space-2);
    flex-wrap: wrap;
}

/* Loading skeleton */
.tb-search-skeleton {
    display: flex;
    flex-direction: column;
    gap: var(--tb-space-3);
}

.tb-search-skeleton__item {
    height: 96px;
    border-radius: var(--tb-radius-md);
    background: linear-gradient(
        90deg,
        var(--tb-color-surface-muted) 25%,
        var(--tb-color-border) 50%,
        var(--tb-color-surface-muted) 75%
    );
    background-size: 200% 100%;
    animation: tb-skeleton-shimmer 1.4s infinite;
}

@keyframes tb-skeleton-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.tb-search-import-error {
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-danger);
}

/* Trainings-context banner above the search card */
.tb-search-context {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--tb-space-3);
    padding: var(--tb-space-3) var(--tb-space-4);
    margin-bottom: var(--tb-space-3);
    background: var(--tb-color-accent-soft);
    border: 1px solid var(--tb-color-accent);
    border-radius: var(--tb-radius-md);
    color: var(--tb-color-text);
}

.tb-search-context__body {
    flex: 1;
    min-width: 0;
}

.tb-search-context__lead {
    margin: 0;
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text-muted);
}

.tb-search-context__title {
    margin: var(--tb-space-1) 0 0;
    font-size: var(--tb-font-size-sm);
    font-weight: var(--tb-font-weight-semibold);
}

.tb-search-context__title a {
    color: inherit;
    text-decoration: none;
}

.tb-search-context__title a:hover,
.tb-search-context__title a:focus-visible {
    text-decoration: underline;
}

/* Add-to-training: inline feedback + picker */
.tb-search-add-feedback {
    display: inline-block;
    margin-left: var(--tb-space-2);
    font-size: var(--tb-font-size-xs);
}

.tb-search-add-feedback--success { color: var(--tb-color-accent-strong); }
.tb-search-add-feedback--duplicate { color: var(--tb-color-text-muted); }
.tb-search-add-feedback--error { color: var(--tb-color-danger); }

.tb-search-add-picker {
    margin-top: var(--tb-space-2);
    padding: var(--tb-space-3);
    background: var(--tb-color-surface);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-md);
}

.tb-search-add-picker__lead {
    margin: 0 0 var(--tb-space-2);
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text-muted);
}

.tb-search-add-picker__rows {
    display: flex;
    flex-direction: column;
    gap: var(--tb-space-1);
}

.tb-search-add-picker__row {
    appearance: none;
    text-align: left;
    padding: var(--tb-space-2) var(--tb-space-3);
    background: var(--tb-color-surface-muted);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-sm);
    cursor: pointer;
    font-size: var(--tb-font-size-sm);
    color: var(--tb-color-text);
}

.tb-search-add-picker__row:hover:not([disabled]),
.tb-search-add-picker__row:focus-visible {
    background: var(--tb-color-accent-soft);
    border-color: var(--tb-color-accent);
    outline: none;
}

.tb-search-add-picker__row[disabled] {
    opacity: 0.6;
    cursor: progress;
}

.tb-search-add-picker__empty,
.tb-search-add-picker__error {
    margin: 0;
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text-muted);
}

.tb-search-add-picker__error {
    color: var(--tb-color-danger);
}

/* Profile chips: shows the understood query_profile signals.
   Each chip has a × button to remove the signal and re-run the search. */
#exercise-search-profile {
    margin-bottom: var(--tb-space-3);
}

.tb-search-profile__lead {
    margin: 0 0 var(--tb-space-2);
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text-muted);
}

.tb-search-profile__chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--tb-space-2);
}

.tb-search-profile-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--tb-space-1);
    padding: var(--tb-space-1) var(--tb-space-2);
    background: var(--tb-color-surface-muted);
    border: 1px solid var(--tb-color-border);
    border-radius: var(--tb-radius-round);
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text);
}

.tb-search-profile-chip__label {
    line-height: var(--tb-line-height-normal);
}

.tb-search-profile-chip__remove {
    appearance: none;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--tb-color-text-muted);
    font-size: var(--tb-font-size-sm);
    line-height: var(--tb-line-height-dense);
    padding: 0 var(--tb-space-1);
    border-radius: var(--tb-radius-sm);
}

.tb-search-profile-chip__remove:hover,
.tb-search-profile-chip__remove:focus-visible {
    color: var(--tb-color-text);
    background: var(--tb-color-border);
    outline: none;
}

/* Progressive search: status row above the result list */
.tb-search-status {
    display: flex;
    align-items: center;
    gap: var(--tb-space-2);
    margin-bottom: var(--tb-space-3);
    font-size: var(--tb-font-size-xs);
    color: var(--tb-color-text-muted);
}

.tb-search-status__spinner {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--tb-color-border);
    border-top-color: var(--tb-color-accent);
    animation: tb-search-status-spin 0.8s linear infinite;
}

@keyframes tb-search-status-spin {
    to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
    .tb-search-status__spinner { animation: none; }
}

/* Accessibility utility: keep label available for screen readers only. */
.tb-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}