/*
 * Layout for the lesson scheme editor. Written as plain CSS on top of Filament's
 * design tokens: the panel ships no custom Tailwind build, so arbitrary utility
 * classes would not exist in its stylesheet.
 *
 * Every control shares one height and every row one grid, so adding a nested
 * group or clearing an element does not shift the rows around it.
 */

.lsb {
    --lsb-control-height: 2.25rem;
    --lsb-border: var(--gray-200);
    --lsb-surface: var(--gray-50);
    --lsb-surface-raised: #fff;
    --lsb-text-muted: var(--gray-500);

    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dark .lsb {
    --lsb-border: var(--gray-700);
    --lsb-surface: var(--gray-900);
    --lsb-surface-raised: var(--gray-950);
    --lsb-text-muted: var(--gray-400);
}

.lsb [x-cloak] {
    display: none !important;
}

/* — controls —————————————————————————————————————————————————— */

.lsb-control {
    height: var(--lsb-control-height);
    min-width: 0;
    width: 100%;
    padding: 0 0.625rem;
    border: 1px solid var(--lsb-border);
    border-radius: 0.5rem;
    background-color: var(--lsb-surface-raised);
    color: inherit;
    font-size: 0.875rem;
    line-height: 1.25rem;
}

.lsb-control:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: -1px;
}

.lsb-control:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

select.lsb-control {
    appearance: none;
    padding-right: 1.75rem;
    background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
        linear-gradient(135deg, currentColor 50%, transparent 50%);
    background-position: right 0.85rem center, right 0.6rem center;
    background-size: 0.3rem 0.3rem, 0.3rem 0.3rem;
    background-repeat: no-repeat;
}

.lsb-textarea {
    height: auto;
    min-height: calc(var(--lsb-control-height) * 1.5);
    padding: 0.5rem 0.625rem;
    resize: vertical;
}

.lsb-picker {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-align: left;
    cursor: pointer;
}

.lsb-type-icon {
    flex-shrink: 0;
    width: 1.125rem;
    height: 1.125rem;
    object-fit: contain;
}

.lsb-type-icon-group {
    font-size: 1rem;
    line-height: 1.125rem;
    text-align: center;
}

/* Overrides the flex column of .lsb-modal-body, which is declared later. */
.lsb-modal-body.lsb-type-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
    gap: 0.375rem;
}

.lsb-type-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.625rem;
    border: 1px solid transparent;
    border-radius: 0.5rem;
    background-color: var(--lsb-surface-raised);
    font-size: 0.875rem;
    text-align: left;
    cursor: pointer;
}

.lsb-type-option:hover {
    border-color: var(--lsb-border);
}

.lsb-picker-value {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.lsb-picker-empty {
    color: var(--lsb-text-muted);
}

.lsb-secondary {
    cursor: pointer;
    background-color: var(--lsb-surface);
    white-space: nowrap;
}

/*
 * A filled slot has to read at a glance — the counter alone does not. Green
 * means every position is covered, amber means the map is started but has gaps.
 */
.lsb-state-full {
    border-color: var(--primary-600);
    background-color: color-mix(in oklab, var(--primary-500) 14%, transparent);
    color: var(--primary-600);
    font-weight: 500;
}

.lsb-state-partial {
    border-color: var(--warning-600);
    background-color: color-mix(in oklab, var(--warning-500) 14%, transparent);
    color: var(--warning-600);
    font-weight: 500;
}

.dark .lsb-state-full {
    border-color: var(--primary-500);
    color: var(--primary-400, var(--primary-500));
}

.dark .lsb-state-partial {
    border-color: var(--warning-500);
    color: var(--warning-400, var(--warning-500));
}

/* — chrome ———————————————————————————————————————————————————— */

.lsb-toolbar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.lsb-muted {
    color: var(--lsb-text-muted);
    font-size: 0.8125rem;
}

.lsb-variant {
    border: 1px solid var(--lsb-border);
    border-radius: 0.75rem;
    overflow: hidden;
    background-color: var(--lsb-surface);
}

.lsb-variant-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    min-height: 3rem;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
}

.lsb-variant-title {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    min-width: 0;
}

.lsb-index {
    font-weight: 600;
    font-size: 0.875rem;
}

.lsb-chip {
    padding: 0.125rem 0.5rem;
    border-radius: 0.375rem;
    border: 1px solid var(--lsb-border);
    background-color: var(--lsb-surface-raised);
    font-size: 0.75rem;
    white-space: nowrap;
}

.lsb-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-shrink: 0;
}

.lsb-variant-body {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.75rem;
    border-top: 1px solid var(--lsb-border);
    background-color: var(--lsb-surface-raised);
}

.lsb-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
    gap: 0.75rem;
}

.lsb-field {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-width: 0;
}

.lsb-label {
    font-size: 0.75rem;
    color: var(--lsb-text-muted);
}

.lsb-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.625rem;
    border: 1px solid var(--lsb-border);
    border-radius: 0.625rem;
    background-color: var(--lsb-surface);
}

.lsb-group-head {
    display: grid;
    grid-template-columns: minmax(10rem, 24rem) 1fr;
    align-items: center;
    gap: 0.5rem;
}

.lsb-group-head .lsb-actions {
    justify-content: flex-end;
}

.lsb-node {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.lsb-node-nested {
    padding: 0.5rem;
    border: 1px dashed var(--lsb-border);
    border-radius: 0.5rem;
    background-color: var(--lsb-surface-raised);
}

/*
 * Type · element · auxiliary action · row actions. Fixed tracks keep the columns
 * aligned whether the row holds an element, a nested group or nothing yet.
 */
.lsb-node-row {
    display: grid;
    grid-template-columns: 12rem minmax(10rem, 1fr) 11rem auto;
    align-items: center;
    gap: 0.5rem;
}

.lsb-control-aux {
    width: 100%;
}

.lsb-nested {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.5rem;
    padding-left: 0.75rem;
    border-left: 2px solid var(--lsb-border);
}

/* — dialogs ——————————————————————————————————————————————————— */

.lsb-modal {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.lsb-modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgb(0 0 0 / 0.5);
}

.lsb-modal-window {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: min(44rem, 100%);
    max-height: 82vh;
    padding: 1rem;
    border-radius: 0.75rem;
    border: 1px solid var(--lsb-border);
    background-color: var(--lsb-surface);
    box-shadow: 0 10px 30px rgb(0 0 0 / 0.25);
}

.lsb-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.lsb-modal-title {
    font-weight: 600;
}

.lsb-modal-search {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.lsb-modal-body {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    overflow-y: auto;
}

.lsb-modal-row {
    display: grid;
    grid-template-columns: minmax(8rem, 1fr) 2fr;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
}

.lsb-option {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.5rem 0.625rem;
    border: 1px solid transparent;
    border-radius: 0.5rem;
    background-color: var(--lsb-surface-raised);
    font-size: 0.875rem;
    text-align: left;
    cursor: pointer;
}

.lsb-option:hover {
    border-color: var(--lsb-border);
}

.lsb-option-active {
    border-color: var(--primary-500);
}

/* SKU and id are what the content team matches against — same weight as the
 * title, only a step down in contrast. */
.lsb-option-meta {
    color: var(--gray-600);
    font-size: 0.8125rem;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.dark .lsb-option-meta {
    color: var(--gray-300);
}

.lsb-option-clear {
    justify-content: center;
    grid-template-columns: 1fr;
    border-color: var(--lsb-border);
    background-color: var(--lsb-surface);
    font-weight: 500;
}

.lsb-clear-divider {
    height: 1px;
    margin: 0.125rem 0 0.25rem;
    background-color: var(--lsb-border);
}

.lsb-option-checkbox {
    grid-template-columns: auto 1fr auto;
}

.lsb-modal-footer {
    display: flex;
    justify-content: flex-end;
}