trilium/packages/ckeditor5-math/theme/mathform.css

/**
 * Math equation editor dialog styles
 * Complete version with scrolling fixes for preview and input
 */

/* ============================================================================
   1. Main Layout Containers (The Skeleton)
   ========================================================================= */

.ck.ck-math-form {
    display: flex;
    flex-direction: column;
    padding: var(--ck-spacing-standard);
    box-sizing: border-box;
	max-width: 80vw;
    height: 100%;  /* Never wider than screen */
    overflow-x: hidden; /* Prevent the main window from scrolling horizontally */
}

/* Mobile responsiveness */
@media screen and (max-width: 600px) {
    .ck.ck-math-form {
        flex-wrap: wrap;
    }
}

.ck-math-view {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    gap: var(--ck-spacing-standard);
    min-height: fit-content;
    min-width: 0;
    width: 100%;
}

.ck-math-button-row {
    display: flex;
    flex-shrink: 0;
    gap: var(--ck-spacing-standard);
    margin-top: var(--ck-spacing-standard);
    width: fit-content;
    max-width: 100%;
    flex-wrap: wrap;
}

/* ============================================================================
   2. Shared Styling (Applies to Input AND Preview)
   ========================================================================= */

/* This targets both the top input AND the bottom preview */
.ck.ck-math-form math-field,
.ck.ck-math-form textarea {
    box-sizing: border-box;
    padding: var(--ck-spacing-small);
    background: var(--ck-color-input-background) !important;
    color: var(--ck-color-input-text, inherit);
    font-size: var(--ck-font-size-base);
    border: none !important;
    border-radius: var(--ck-border-radius, 6px);
    outline: 3px solid transparent;
    outline-offset: 6px;
}

/* SPECIFIC FIX FOR PREVIEW SCROLLING */
.ck.ck-math-form math-field {
    display: block !important;
    width: 100%;

    /* 3. Stop it from growing infinite */
    max-width: 100%;

    /* 4. Enable scrollbars for the red matrix area */
    overflow-x: auto !important;

    /* Theme overrides */
    --selection-background-color: rgba(33, 150, 243, 0.2);
    --selection-color: inherit;
    --contains-highlight-background-color: rgba(0, 0, 0, 0.05);
}

/* ============================================================================
   3. MathLive Input Specifics (The Top Box)
   ========================================================================= */

/* Wrapper for the editable input at the top */
.ck.ck-mathlive-input {
    display: inline-block;
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%; /* Safety */
    min-height: fit-content;
    max-height: 80vh;
    overflow: auto;
    padding-bottom: var(--ck-spacing-small);
    resize: none;
}

/* Shadow DOM Layout adjustments (Keep your existing logic) */
.ck.ck-math-form math-field::part(container),
.ck.ck-math-form math-field::part(content),
.ck.ck-math-form math-field::part(field) {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    height: 100%;
    align-items: flex-start;
    justify-content: flex-start;
}

/* UI Buttons positions */
.ck.ck-math-form math-field::part(virtual-keyboard-toggle),
.ck.ck-math-form math-field::part(menu-toggle) {
    position: absolute;
    top: 8px;
}
.ck.ck-math-form math-field::part(virtual-keyboard-toggle) { right: 40px; }
.ck.ck-math-form math-field::part(menu-toggle) {
    right: 8px;
    display: flex !important;
    visibility: visible !important;
}

/* ============================================================================
   4. Raw LaTeX Integration (The Middle Box)
   ========================================================================= */

.ck-math-view .ck-labeled-field-view {
    display: flex;
    flex-direction: column;
    flex: 0 0 auto;
    min-width: 100%;

    /* Allow the middle box to shrink if needed */
    width: 100%;
    max-width: 100%;

    min-height: 140px;
    max-height: 70vh;
    resize: both;
    overflow: auto;
    background: transparent;
}

/* Hide label */
.ck-math-view .ck-labeled-field-view .ck-label {
    display: none !important;
}

/* Internal wrapper */
.ck-math-view .ck-labeled-field-view .ck-labeled-field-view__input-wrapper {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    width: 100%;
    min-height: 100px;
    height: auto;
    padding: 0;
    border: none;
    background: transparent;
    box-shadow: none;
}

/* The Textarea */
.ck-math-view .ck-labeled-field-view textarea {
    display: block;
    flex: 1 1 auto;
    width: 100% !important;
    height: 100%;
    min-height: 140px;
    resize: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    transition: none !important;
}

.ck-math-view .ck-labeled-field-view textarea:hover,
.ck-math-view .ck-labeled-field-view textarea:focus {
    background: var(--ck-color-input-background) !important;
    outline: none !important;
    box-shadow: none !important;
}