.spec-manager-page {
    min-height: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: .75rem;
    padding: 16px;
}

.spec-manager-title {
    margin: 0;
    font-size: clamp(1.12rem, 1rem + .45vw, 1.45rem);
    line-height: 1.2;
    font-weight: 650;
    letter-spacing: -.01em;
}

.spec-manager-grid {
    display: grid;
    grid-template-columns: minmax(250px, 1.05fr) minmax(290px, 1fr) minmax(320px, 1.1fr);
    gap: 12px;
    flex: 1;
    min-height: 0;
    width: 100%;
}

.spec-panel {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    border-radius: 1rem;
    overflow: hidden;
    background: color-mix(in srgb, var(--glass-bg) 86%, transparent);
    border: 1px solid color-mix(in srgb, var(--border-color-strong) 85%, transparent);
    box-shadow: 0 18px 34px rgba(13, 22, 37, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

html[data-theme="dark"] .spec-panel {
    background: linear-gradient(170deg, rgba(24, 34, 54, 0.86) 0%, rgba(16, 24, 40, 0.9) 100%);
    box-shadow: 0 20px 36px rgba(2, 8, 22, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.spec-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .45rem;
    padding: .72rem .78rem .66rem;
    border-bottom: 1px solid var(--border-color);
    background: color-mix(in srgb, var(--glass-bg-strong) 88%, transparent);
}

.spec-panel-header h2 {
    font-size: .93rem;
    margin: 0;
    font-weight: 650;
    line-height: 1.2;
}

.spec-panel-header .small {
    font-size: .72rem;
    line-height: 1.2;
}

.spec-panel-body {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding: .72rem;
    display: flex;
    flex-direction: column;
    gap: .55rem;
}

.spec-panel-body .form-label {
    font-size: .78rem;
}

.spec-panel-body .form-control,
.spec-panel-body .form-select,
.spec-panel-body .btn {
    min-height: 35px;
    font-size: .82rem;
}


.spec-section-divider {
    margin: .2rem 0 .15rem;
    border: 0;
    border-top: 1px solid color-mix(in srgb, var(--border-color-strong) 80%, transparent);
    opacity: 1;
}

.definition-list,
.option-list,
.mapping-grid {
    border: 1px solid var(--border-color);
    border-radius: .85rem;
    background: color-mix(in srgb, var(--glass-bg-strong) 74%, transparent);
    padding: .18rem;
}

html[data-theme="dark"] .definition-list,
html[data-theme="dark"] .option-list,
html[data-theme="dark"] .mapping-grid {
    background: linear-gradient(180deg, rgba(22, 32, 52, 0.8) 0%, rgba(16, 23, 38, 0.78) 100%);
    border-color: color-mix(in srgb, var(--border-color-strong) 92%, transparent);
}

.definition-list {
    display: grid;
    gap: .2rem;
    flex: 1;
    min-height: 220px;
    max-height: none;
    overflow: auto;
}

.definition-item {
    display: grid;
    gap: .1rem;
    text-align: left;
    border: 1px solid transparent;
    border-radius: .72rem;
    background: transparent;
    color: var(--text-primary);
    padding: .38rem .42rem;
    transition: background .16s ease, border-color .16s ease, transform .16s ease, box-shadow .16s ease;
}

.definition-item:hover {
    border-color: color-mix(in srgb, var(--accent-secondary) 24%, var(--border-color));
    background: color-mix(in srgb, var(--accent-secondary) 9%, transparent);
}

.definition-item.active {
    border-color: color-mix(in srgb, var(--accent-secondary) 45%, var(--border-color));
    background: color-mix(in srgb, var(--accent-secondary) 15%, transparent);
    box-shadow: 0 8px 18px rgba(29, 62, 104, 0.12);
}

html[data-theme="dark"] .definition-item.active {
    box-shadow: 0 10px 20px rgba(5, 12, 24, 0.45), inset 0 0 0 1px rgba(134, 166, 206, 0.14);
}

.definition-name {
    font-size: .8rem;
    font-weight: 650;
    line-height: 1.2;
}

.definition-meta {
    color: var(--text-muted);
    font-size: .72rem;
    line-height: 1.2;
}

.panel-disabled {
    opacity: .75;
}

.empty-panel-state {
    display: grid;
    place-items: center;
    width: 100%;
    min-height: 180px;
    border: 1px dashed var(--border-color-strong);
    border-radius: .85rem;
    color: var(--text-muted);
    font-size: .82rem;
    text-align: center;
    background: color-mix(in srgb, var(--glass-bg) 70%, transparent);
    padding: .65rem;
}

.option-tools {
    margin-bottom: .05rem;
}

.option-list {
    list-style: none;
    margin: 0;
    display: grid;
    gap: .2rem;
    flex: 1;
    min-height: 170px;
    overflow: auto;
}

.option-item {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr) auto;
    gap: .4rem;
    align-items: center;
    border: 1px solid transparent;
    background: transparent;
    border-radius: .7rem;
    padding: .32rem .36rem;
    transition: background .16s ease, border-color .16s ease;
}

.option-item:hover {
    background: color-mix(in srgb, var(--accent-secondary) 9%, transparent);
    border-color: color-mix(in srgb, var(--accent-secondary) 24%, var(--border-color));
}

.option-item.dragging {
    opacity: .74;
    transform: scale(.985);
    box-shadow: 0 12px 24px rgba(0, 0, 0, .18);
    border-color: color-mix(in srgb, var(--accent-secondary) 40%, var(--border-color));
}


.option-list.is-dragging {
    border-color: color-mix(in srgb, var(--accent-secondary) 58%, var(--border-color));
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-secondary) 26%, transparent);
}

.option-drag-handle {
    width: 28px;
    height: 28px;
    border: 0;
    background: transparent;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: .5rem;
    cursor: grab;
    transition: background .16s ease, color .16s ease, transform .16s ease;
}

.option-drag-handle svg {
    width: 14px;
    height: 14px;
}

.option-item.drag-intent .option-drag-handle,
.option-item.dragging .option-drag-handle,
.option-drag-handle:hover {
    color: var(--accent-secondary);
    background: color-mix(in srgb, var(--accent-secondary) 12%, transparent);
}

.option-item.drop-before {
    box-shadow: inset 0 3px 0 0 color-mix(in srgb, var(--accent-secondary) 65%, transparent);
}

.option-item.drop-after {
    box-shadow: inset 0 -3px 0 0 color-mix(in srgb, var(--accent-secondary) 65%, transparent);
}

.option-item-value {
    font-size: .78rem;
    font-weight: 620;
}

.option-item-meta {
    font-size: .7rem;
    color: var(--text-muted);
}

.option-item-actions {
    display: flex;
    gap: .2rem;
}

.option-item-actions .btn {
    min-height: 29px;
    font-size: .74rem;
    border-radius: .62rem;
}

.mapping-grid {
    display: grid;
    gap: .25rem;
    flex: 1;
    min-height: 200px;
    overflow: auto;
}

.mapping-item {
    border: 1px solid transparent;
    background: transparent;
    border-radius: .72rem;
    padding: .38rem .4rem;
    transition: background .16s ease, border-color .16s ease;
}

.mapping-item:hover {
    background: color-mix(in srgb, var(--accent-secondary) 8%, transparent);
    border-color: color-mix(in srgb, var(--accent-secondary) 20%, var(--border-color));
}

.mapping-item-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .5rem;
}

.mapping-title {
    font-size: .78rem;
    font-weight: 620;
}

.mapping-options {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .4rem;
    margin-top: .32rem;
}

.mapping-options .form-check-label,
.mapping-options label {
    font-size: .72rem;
}

.mapping-options .form-control {
    font-size: .73rem;
    min-height: 32px;
    padding: .18rem .34rem;
}

@media (max-width: 1400px) {
    .spec-manager-grid {
        grid-template-columns: repeat(2, minmax(240px, 1fr));
    }

    #mappings-panel {
        grid-column: 1 / -1;
    }
}

@media (max-width: 992px) {
    .spec-manager-page {
        height: auto;
        min-height: 0;
        padding: 10px;
    }

    .spec-manager-grid {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .spec-panel {
        min-height: 400px;
    }
}
.definition-list,
.option-list,
.mapping-grid {
    flex: 0 0 auto;
    min-height: 0;
    align-content: start;
}

.definition-list {
    gap: .14rem;
    height: fit-content;
    max-height: 320px;
    overflow: auto;
}

.definition-item {
    flex: 0 0 auto;
    align-content: start;
    padding: .28rem .38rem;
}

.definition-name {
    font-size: .78rem;
    line-height: 1.15;
}

.definition-meta {
    font-size: .69rem;
    line-height: 1.1;
}

.option-list {
    gap: .14rem;
    height: fit-content;
    max-height: 260px;
    overflow: auto;
}

.option-item {
    padding: .24rem .32rem;
}

.option-item-content {
    gap: .02rem;
}


.option-list.is-dragging {
    border-color: color-mix(in srgb, var(--accent-secondary) 58%, var(--border-color));
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-secondary) 26%, transparent);
}

.option-drag-handle {
    width: 28px;
    height: 28px;
    border: 0;
    background: transparent;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: .5rem;
    cursor: grab;
    transition: background .16s ease, color .16s ease, transform .16s ease;
}

.option-drag-handle svg {
    width: 14px;
    height: 14px;
}

.option-item.drag-intent .option-drag-handle,
.option-item.dragging .option-drag-handle,
.option-drag-handle:hover {
    color: var(--accent-secondary);
    background: color-mix(in srgb, var(--accent-secondary) 12%, transparent);
}

.option-item.drop-before {
    box-shadow: inset 0 3px 0 0 color-mix(in srgb, var(--accent-secondary) 65%, transparent);
}

.option-item.drop-after {
    box-shadow: inset 0 -3px 0 0 color-mix(in srgb, var(--accent-secondary) 65%, transparent);
}

.option-item-value {
    font-size: .76rem;
    line-height: 1.12;
}

.option-item-meta {
    font-size: .67rem;
    line-height: 1.08;
}

.mapping-grid {
    height: fit-content;
    max-height: 320px;
    overflow: auto;
}

.mapping-item {
    padding: .28rem .34rem;
}

.mapping-options {
    margin-top: .24rem;
    gap: .32rem;
}