.jb-root {
    display: flex;
    gap: 12px;
    width: 100%;
    height: calc(100vh - 160px);
    min-height: 560px;
    box-sizing: border-box;
    color: var(--body-text-color);
    font-size: var(--body-text-size);
    line-height: 1.4;
    --color-accent: var(--button-primary-border-color);
}

/* ----- canvas ----- */

.jb-canvas {
    flex: 2 1 0;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: var(--block-background-fill);
    border: 1px solid var(--border-color-primary);
    border-radius: 14px;
    box-shadow: var(--shadow-drop);
    overflow: hidden;
}

.jb-stage {
    --jb-text-scale: 1;
    position: relative;
    background-color: var(--background-fill-secondary);
    background-image:
        linear-gradient(to right, color-mix(in srgb, var(--border-color-primary) 60%, transparent) 1px, transparent 1px),
        linear-gradient(to bottom, color-mix(in srgb, var(--border-color-primary) 60%, transparent) 1px, transparent 1px);
    background-size: 16px 16px;
    background-position: 0 0;
    transform-origin: center center;
    border: 1px solid var(--border-color-primary);
    box-shadow: var(--shadow-inset);
    overflow: hidden;
    cursor: grab;
}

.jb-stage.jb-panning {
    cursor: grabbing;
}

.jb-box {
    position: absolute;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    min-width: 20px;
    min-height: 20px;
    overflow: hidden;
    background: color-mix(in srgb, var(--color-accent) 14%, transparent);
    border: 1.5px solid var(--border-color-accent);
    border-radius: 4px;
    cursor: move;
    user-select: none;
    touch-action: none;
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.jb-box:hover {
    border-color: var(--color-accent);
}

.jb-box.jb-active {
    border-color: var(--color-accent);
    box-shadow:
        0 0 0 3px var(--color-accent-soft),
        var(--shadow-drop-lg);
    z-index: 10;
}

.jb-box-tag {
    flex: 0 0 auto;
    padding: 1px 7px;
    font-size: calc(12px * var(--jb-text-scale));
    line-height: 1.5;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    background: var(--color-accent);
    color: var(--button-primary-text-color);
}

.jb-field {
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
    width: auto;
    box-sizing: border-box;
    resize: none !important;
    border: none;
    outline: none;
    margin: 8px !important;
    padding: 3px 6px !important;
    border-radius: 4px !important;
    background: color-mix(in srgb, var(--input-background-fill) 50%, transparent) !important;
    color: var(--body-text-color);
    font-family: inherit;
    font-size: calc(16px * var(--jb-text-scale)) !important;
    line-height: 1.5 !important;
    overflow: hidden;
}

.jb-field::placeholder {
    color: var(--input-placeholder-color);
}

.jb-field[readonly] {
    cursor: move;
    user-select: none;
}

.jb-field:not([readonly]) {
    user-select: text;
}

.jb-box-handle {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 14px;
    height: 14px;
    cursor: nwse-resize;
    touch-action: none;
}

.jb-box-handle::after {
    content: "";
    position: absolute;
    right: 3px;
    bottom: 3px;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--color-accent);
    border-bottom: 2px solid var(--color-accent);
    border-radius: 0 0 3px 0;
    opacity: 0.6;
    transition: opacity 0.15s ease;
}

.jb-box:hover .jb-box-handle::after {
    opacity: 1;
}

/* ----- side panel ----- */

.jb-side {
    flex: 1 1 0;
    min-width: 300px;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.jb-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 14px;
    background: var(--block-background-fill);
    border: 1px solid var(--border-color-primary);
    border-radius: 12px;
    box-shadow: var(--shadow-drop);
}

.jb-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--body-text-color-subdued);
}

.jb-section-title::before {
    content: "";
    width: 3px;
    height: 13px;
    border-radius: 2px;
    background: var(--color-accent);
}

.jb-list-section {
    flex: 1 1 auto;
    min-height: 0;
}

.jb-list {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-right: 3px;
}

.jb-list-toolbar {
    display: flex;
    gap: 8px;
}

.jb-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.jb-half {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.jb-row label,
.jb-fld-label {
    font-size: var(--block-info-text-size);
    color: var(--block-info-text-color);
}

/* ----- save / load ----- */

.jb-top {
    display: flex;
    gap: 12px;
    align-items: stretch;
}

.jb-top>.jb-section {
    flex: 1 1 0;
    min-width: 0;
}

.jb-top .jb-row label {
    width: 32px;
}

.jb-save .jb-row>button {
    flex: 1 1 0;
    min-width: 0;
}

/* ----- inputs ----- */

.jb-root input[type="text"],
.jb-root input[type="number"],
.jb-root select,
.jb-root textarea.jb-sum-caption,
.jb-root textarea.jb-item-caption {
    min-width: 0;
    box-sizing: border-box;
    padding: 6px 9px;
    background: var(--input-background-fill);
    color: var(--body-text-color);
    border: 1px solid var(--input-border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: var(--input-text-size);
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.jb-root input[type="text"]:hover,
.jb-root input[type="number"]:hover,
.jb-root select:hover,
.jb-root textarea.jb-sum-caption:hover,
.jb-root textarea.jb-item-caption:hover {
    border-color: var(--input-border-color-hover);
}

.jb-root input[type="text"]:focus,
.jb-root input[type="number"]:focus,
.jb-root select:focus,
.jb-root textarea.jb-sum-caption:focus,
.jb-root textarea.jb-item-caption:focus {
    outline: none;
    border-color: var(--input-border-color-focus);
    box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.jb-root input::placeholder,
.jb-root textarea.jb-sum-caption::placeholder,
.jb-root textarea.jb-item-caption::placeholder {
    color: var(--input-placeholder-color);
}

.jb-sum-caption,
.jb-item-caption {
    display: block;
    width: 100%;
    resize: none;
    overflow: hidden;
    overflow-wrap: break-word;
    white-space: pre-wrap;
}

.jb-width,
.jb-height,
.jb-mp {
    flex: 0 0 auto;
    width: 64px;
}

.jb-ar {
    flex: 0 0 auto;
    width: 64px;
}

/* ----- radios ----- */

.jb-root input[type="radio"] {
    -webkit-appearance: none;
    appearance: none;
    flex: 0 0 auto;
    width: 15px;
    height: 15px;
    margin: 0;
    padding: 0;
    border: 2px solid var(--border-color-primary);
    border-radius: 50%;
    background: var(--checkbox-background-color);
    cursor: pointer;
    transition:
        border-color 0.15s ease,
        background 0.15s ease;
}

.jb-root input[type="radio"]:hover {
    border-color: var(--color-accent);
}

.jb-root input[type="radio"]:checked {
    border-color: var(--color-accent);
    background: var(--color-accent);
    box-shadow: inset 0 0 0 2px var(--checkbox-background-color);
}

.jb-root input[type="radio"]:focus-visible {
    outline: 2px solid var(--color-accent-soft);
    outline-offset: 1px;
}

/* ----- buttons ----- */

.jb-root button {
    cursor: pointer;
    padding: 7px 12px;
    background: var(--button-secondary-background-fill);
    color: var(--button-secondary-text-color);
    border: 1px solid var(--button-secondary-border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: var(--button-small-text-size);
    font-weight: 600;
    transition:
        background 0.15s ease,
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.jb-root button:hover {
    background: var(--button-secondary-background-fill-hover);
    border-color: var(--button-secondary-border-color-hover);
}

/* ----- list items ----- */

.jb-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 8px 10px;
    background: var(--background-fill-secondary);
    border: 1px solid transparent;
    border-radius: 10px;
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.jb-item:hover {
    border-color: var(--border-color-primary);
}

.jb-item-top {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

.jb-radio {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 2px 6px;
    border-radius: 6px;
    font-size: var(--checkbox-label-text-size);
    color: var(--checkbox-label-text-color);
    cursor: pointer;
    user-select: none;
    transition: background 0.15s ease;
}

.jb-radio:hover {
    background: var(--checkbox-label-background-fill-hover);
}

button.jb-remove {
    margin-left: auto;
    padding: 1px 9px;
    font-size: 16px;
    line-height: 1.3;
    background: transparent;
    border-color: transparent;
    color: var(--body-text-color-subdued);
}

button.jb-remove:hover {
    border-color: var(--button-cancel-background-fill-hover);
    color: var(--error-text-color);
}

.jb-item-caption,
.jb-item-text {
    width: 100%;
}

.jb-item-nums {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 5px;
}

.jb-item-nums .jb-num {
    width: 100%;
}

/* ----- submit ----- */

.jb-submit {
    flex-direction: row;
    gap: 10px;
    padding: 0px;
    border: none;
}

.jb-submit .jb-send-t2i,
.jb-submit .jb-send-i2i {
    flex: 1 1 0;
    border-color: var(--border-color-primary);
}

.jb-submit .jb-send-t2i:hover,
.jb-submit .jb-send-i2i:hover {
    border-color: var(--button-primary-border-color-hover);
}

/* ----- validation ----- */

.jb-root .jb-invalid {
    border: 1px solid var(--error-text-color) !important;
}

/* ----- load prompt modal ----- */

.jb-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    backdrop-filter: blur(4px) brightness(0.5);
}

.jb-modal.jb-hidden {
    display: none !important;
}

.jb-dialog {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 14px;
    box-sizing: border-box;
    width: min(720px, 100%);
    height: min(80%, 600px);
    padding: 32px;
    background: var(--background-fill-primary);
    border: 1px solid var(--border-color-primary);
    border-radius: 14px;
    box-shadow: var(--shadow-drop-lg);
}

.jb-dialog button.jb-dialog-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    padding: 0px !important;
    line-height: 1;
    font-size: 20px;
    color: var(--error-text-color);
    border-color: var(--border-color-primary);
    border-radius: 8px;
}

.jb-dialog-body {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    gap: 12px;
}

.jb-dialog textarea.jb-dialog-input {
    flex: 1 1 auto;
    min-width: 0;
    min-height: 0;
    box-sizing: border-box;
    resize: none;
    padding: 10px;
    background: var(--input-background-fill);
    color: var(--body-text-color);
    border: 1px solid var(--input-border-color);
    border-radius: 8px;
    font-family: monospace;
    font-size: var(--input-text-size);
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.jb-dialog textarea.jb-dialog-input:focus {
    outline: none;
    border-color: var(--input-border-color-focus);
    box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.jb-dialog-dims {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 128px;
}

.jb-dialog-dims label {
    font-size: var(--block-info-text-size);
    color: var(--block-info-text-color);
}

.jb-dialog-dims input {
    width: 100%;
}

.jb-dialog-load {
    flex: 0 0 auto;
    width: 100%;
}