/*
 * Checkbox Component CSS — jsgui3-html
 *
 * Target class: .jsgui-checkbox
 * States: checked, unchecked, indeterminate, disabled, focus
 * Animation: SVG checkmark draw-in, spring scale on toggle
 *
 * Reference: docs/control-design-book/05-control-catalogue.md §Checkbox
 *            docs/control-design-book/visual-advancement/04-control-specs.md §4.9
 */

.jsgui-checkbox {
    display: inline-flex;
    align-items: center;
    gap: var(--j-space-2);
    cursor: pointer;
    user-select: none;
}

/* Hidden native input */
.jsgui-checkbox-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

/* Custom checkbox box */
.jsgui-checkbox-box {
    position: relative;
    width: 20px;
    height: 20px;
    border: 2px solid var(--j-border-strong);
    border-radius: var(--j-radius-sm);
    background: var(--j-bg);
    transition:
        background var(--j-duration-fast) var(--j-ease-out),
        border-color var(--j-duration-fast) var(--j-ease-out),
        transform 200ms var(--j-ease-spring);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* SVG check mark */
.jsgui-checkbox-mark {
    width: 14px;
    height: 14px;
    fill: none;
    stroke: var(--j-primary-fg);
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 20;
    stroke-dashoffset: 20;
    transition: stroke-dashoffset var(--j-duration-normal) var(--j-ease-out);
}

/* Indeterminate dash */
.jsgui-checkbox-dash {
    width: 10px;
    height: 2px;
    background: var(--j-primary-fg);
    border-radius: 1px;
    transform: scaleX(0);
    transition: transform var(--j-duration-fast) var(--j-ease-spring);
    position: absolute;
}

/* ── Checked state ── */
.jsgui-checkbox-input:checked~.jsgui-checkbox-box {
    background: var(--j-primary);
    border-color: var(--j-primary);
    transform: scale(1.05);
}

.jsgui-checkbox-input:checked~.jsgui-checkbox-box .jsgui-checkbox-mark {
    stroke-dashoffset: 0;
}

/* Bounce back after toggle */
.jsgui-checkbox-input:checked~.jsgui-checkbox-box {
    animation: jsgui-checkbox-pop 300ms var(--j-ease-spring);
}

@keyframes jsgui-checkbox-pop {
    0% {
        transform: scale(0.9);
    }

    50% {
        transform: scale(1.1);
    }

    100% {
        transform: scale(1);
    }
}

/* ── Indeterminate state ── */
.jsgui-checkbox-input:indeterminate~.jsgui-checkbox-box {
    background: var(--j-primary);
    border-color: var(--j-primary);
}

.jsgui-checkbox-input:indeterminate~.jsgui-checkbox-box .jsgui-checkbox-dash {
    transform: scaleX(1);
}

.jsgui-checkbox-input:indeterminate~.jsgui-checkbox-box .jsgui-checkbox-mark {
    stroke-dashoffset: 20;
    /* Hidden when indeterminate */
}

/* ── Hover ── */
.jsgui-checkbox:hover .jsgui-checkbox-box {
    border-color: var(--j-primary);
}

.jsgui-checkbox:hover .jsgui-checkbox-input:checked~.jsgui-checkbox-box {
    background: var(--j-primary-hover);
    border-color: var(--j-primary-hover);
}

/* ── Focus ── */
.jsgui-checkbox-input:focus-visible~.jsgui-checkbox-box {
    box-shadow: var(--j-focus-ring);
}

/* ── Disabled ── */
.jsgui-checkbox.disabled,
.jsgui-checkbox-input:disabled~.jsgui-checkbox-box {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ── Label ── */
.jsgui-checkbox-label {
    font: var(--j-font-weight-normal) var(--j-text-sm)/1.4 var(--j-font-sans);
    color: var(--j-fg);
}