/*
 * KURS UI — ONE STRUCTURE FOR LIGHT / DARK / JOYFULL
 * Only structure, dimensions, typographic metrics, layout, and border widths.
 * No theme backgrounds, text colors, gradients or color shadows live here.
 * To change the dimensions of a component, edit this file and the tokens.
 */

/* Page headings and chips: same outer size in all three palettes. */
.cabinet :is(
    .cabinet-page-kicker, .dashboard-kicker, .dashboard-block-label,
    .block-page-label, .block-lesson-label, .lesson-number,
    .lesson-section-label, .trainer-section-label
) {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    max-width: 100%;
    box-sizing: border-box;
    margin-bottom: var(--kurs-space-2);
    padding: var(--kurs-page-kicker-padding);
    border-radius: var(--kurs-page-kicker-radius);
    font-family: var(--kurs-font-ui);
    font-size: var(--kurs-text-label) !important;
    font-weight: var(--kurs-ui-label-weight);
    line-height: var(--kurs-page-kicker-line-height) !important;
    letter-spacing: .045em;
}

/* Menu, course tree, and heading are no longer allowed to change per theme. */
.cabinet .cabinet-nav {
    gap: var(--kurs-space-1);
}
.cabinet .cabinet-nav a {
    display: grid;
    grid-template-columns: var(--kurs-nav-icon-size) minmax(0, 1fr) auto;
    align-items: center;
    column-gap: var(--kurs-nav-gap);
    min-height: var(--kurs-nav-row-height);
    margin: 0 var(--kurs-space-1);
    padding: var(--kurs-space-1) var(--kurs-space-2);
    border-width: var(--kurs-ui-border-width);
    border-style: solid;
    border-radius: var(--kurs-nav-radius);
    box-sizing: border-box;
    font-family: var(--kurs-font-ui);
    font-size: 13.5px;
    font-weight: 800;
    line-height: 1.2;
}
.cabinet .cabinet-nav-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    grid-column: 1;
    justify-self: start;
    box-sizing: border-box;
    flex: 0 0 var(--kurs-nav-icon-size);
    width: var(--kurs-nav-icon-size);
    height: var(--kurs-nav-icon-size);
    min-width: var(--kurs-nav-icon-size);
    padding: 0;
    margin: 0;
    border-radius: 11px;
}
.cabinet .cabinet-nav-icon img {
    display: block;
    width: var(--kurs-nav-image-size);
    height: var(--kurs-nav-image-size);
    max-width: var(--kurs-nav-image-size);
    max-height: var(--kurs-nav-image-size);
    object-fit: contain;
    image-rendering: pixelated;
}
.cabinet .cabinet-nav-icon + span {
    grid-column: 2;
    min-width: 0;
    margin: 0;
    align-self: center;
    overflow-wrap: normal;
    white-space: normal;
}
.cabinet .cabinet-nav-badge {
    grid-column: 3;
    margin: 0;
    justify-self: end;
}
.cabinet .cabinet-lessons { margin: 0 var(--kurs-space-1) 22px; }
.cabinet .cabinet-sidebar-title { padding: 0 var(--kurs-space-2) var(--kurs-space-2); }
.cabinet .cabinet-block-title {
    min-height: var(--kurs-tree-heading-height);
    padding: 7px 10px;
    border-radius: var(--kurs-tree-heading-radius);
    box-sizing: border-box;
    font-family: var(--kurs-font-ui);
    font-size: 13px;
    line-height: 1.4;
    font-weight: 800;
}
.cabinet .cabinet-lesson-tree a {
    border-radius: var(--kurs-tree-row-radius);
    font-family: var(--kurs-font-ui);
    font-size: 13px;
    line-height: 1.4;
}
.cabinet .cabinet-lesson-tree a:is(.active, [aria-current="page"]) {
    border-radius: var(--kurs-tree-row-radius);
    border-width: var(--kurs-ui-border-width);
    border-style: solid;
    font-weight: 800;
}
.cabinet .cabinet-user-head {
    box-sizing: border-box;
    border-width: var(--kurs-ui-border-width);
    border-style: solid;
    border-radius: var(--kurs-card-radius);
}

/* Dashboard cards: rounded perimeter and the coloured left strip are one shape.
   Geometry is palette-independent; themes only paint the surfaces. */
.cabinet :is(.dashboard-continue, .dashboard-block-card) {
    border-radius: var(--kurs-card-radius) !important;
    overflow: hidden;
    box-sizing: border-box;
}
.cabinet .dashboard-continue::before {
    border-radius: 0;
}

/* One geometry for cards, lesson material, callouts and alerts. */
.cabinet :is(
    .dashboard-user, .cabinet-panel, .dashboard-side-card,
    .dashboard-block-card, .dashboard-result-card, .block-page-header,
    .block-lesson-card, .cabinet-empty-card, .library-card,
    .final-module-card, .tariff-card, .billing-current,
    .billing-pending, .kurs-chat, .lesson-audio-card,
    .lesson-material-card, .lesson-test-card, .lesson-test-inline,
    .test-question, .test-result-summary, .essay-card,
    .mock-dashboard-card, .mock-history-card, .mock-start-ready,
    .mock-start-locked, .mock-result-card, .lesson-rule,
    .lesson-base-material-callout, .lesson-callout,
    .letter-trainer, .roots-trainer, .stress-trainer,
    .grammar-trainer, .joined-trainer, .ne-trainer,
    .nn-trainer, .punctuation-trainer, .grammar-error-trainer
) {
    border-radius: var(--kurs-card-radius);
}
.cabinet :is(.lesson-warning, .lesson-alert, .lesson-note,
    .lesson-notice, .lesson-important) {
    border-radius: var(--kurs-control-radius);
}
.cabinet .lesson-material-card,
.cabinet :is(.lesson-rule, .lesson-base-material-callout) {
    border-style: solid;
    box-sizing: border-box;
}
.cabinet :is(.lesson-rule, .lesson-base-material-callout) {
    border-width: 2px !important;
}
/* Trainers and callouts retain identical border thickness, regardless of palette. */
.cabinet :is(
    .letter-trainer, .roots-trainer, .stress-trainer,
    .grammar-trainer, .joined-trainer, .ne-trainer,
    .nn-trainer, .punctuation-trainer, .grammar-error-trainer
) { border-width: 2px !important; border-style: solid; }
.cabinet .lesson-material-card { border-width: 1px; }
.cabinet .lesson-table th { font-weight: 800; }
.cabinet .lesson-rule-text.lesson-student-rich-input {
    padding: 6px 10px;
    border-radius: var(--kurs-control-radius);
}
/* Contents of rule cards have no extra boxes, in every palette. */
.cabinet .lesson-content .lesson-rule :is(.lesson-rule-content, .lesson-rule-text),
.cabinet .lesson-base-material-callout :is(.lesson-rule-content, .lesson-rule-text) {
    border-width: 0;
    border-radius: 0;
    padding: 0;
}

/* Base inputs, short answers, compact trainer inputs and action buttons. */
.cabinet :is(.roots-answer-input, .letter-answer-input) {
    box-sizing: border-box;
    min-height: var(--kurs-control-compact-height);
    height: var(--kurs-control-compact-height);
    border-radius: var(--kurs-control-radius);
    font-family: var(--kurs-font-ui);
    font-size: 16px;
    line-height: 1.3;
}
.cabinet :is(.test-short-answer, .mock-answer-input,
    .grammar-answer, .joined-select, .ne-writing,
    .ne-reason, .punct-reason) {
    box-sizing: border-box;
    min-height: var(--kurs-control-height);
    border-radius: var(--kurs-control-radius);
    font-family: var(--kurs-font-ui);
    font-size: var(--kurs-text-field);
}
.cabinet :is(.dashboard-open, .block-lesson-open, .test-submit,
    .test-retry, .lesson-essay-submit, .lesson-test-inline-button,
    .lesson-complete-button, .mock-start-button, .mock-primary-button,
    .mock-finish-button, .mock-dashboard-button, .exam-submit-button,
    .trainer-check-btn, .trainer-secondary-btn, .letter-check,
    .letter-again, .roots-check, .roots-again, .stress-check,
    .stress-again, .grammar-check, .grammar-again, .joined-check,
    .joined-again, .ne-check, .ne-again, .nn-check, .nn-again) {
    box-sizing: border-box;
    min-height: var(--kurs-control-height);
    padding: var(--kurs-button-padding-y) var(--kurs-button-padding-x);
    border-radius: var(--kurs-control-radius);
    font-family: var(--kurs-font-ui);
    font-size: var(--kurs-text-button);
    line-height: 1.2;
}

/* Mobile behavior shared by all palette classes. */
@media (max-width: 700px) {
    .cabinet .cabinet-nav a {
        min-height: var(--kurs-nav-row-height);
    }
}

/*
 * CALLOUT: стабилизированное редактирование.
 * Никаких переходов, мерцания фона и внезапного светлого поля
 * при hover, focus, selection или автосохранении.
 * Геометрия одинакова, палитры задаются предыдущими правилами тем.
 */
.cabinet :is(
    .lesson-rule .lesson-rule-text[contenteditable="true"],
    .lesson-base-material-callout .lesson-base-material-callout-text[contenteditable="true"]
) {
    transition: none !important;
    animation: none !important;
    -webkit-tap-highlight-color: transparent;
}
.cabinet :is(
    .lesson-rule .lesson-rule-text[contenteditable="true"],
    .lesson-base-material-callout .lesson-base-material-callout-text[contenteditable="true"]
):is(:hover, :focus, :focus-visible) {
    background-color: transparent !important;
    border-color: transparent !important;
    box-shadow: none !important;
    outline: none !important;
}
.cabinet :is(
    .lesson-rule .lesson-rule-text[contenteditable="true"],
    .lesson-base-material-callout .lesson-base-material-callout-text[contenteditable="true"]
)::selection {
    background-color: rgba(24, 142, 154, .30);
    color: inherit;
}


/* KURS UI CALLOUT — EDITABLE TEXT AND SELECTION
 * The rich editor is an editable surface, not a dark input.
 * The yellow card always uses dark text; user-colored spans remain untouched.
 * Selecting text remains possible without a black/white flash.
 */
.cabinet :is(.lesson-rule, .lesson-base-material-callout) {
    --kurs-callout-text: #181109;
    --kurs-callout-selection: rgba(0, 128, 150, .28);
}
.cabinet :is(
    .lesson-rule .lesson-rule-text.lesson-student-rich-input[contenteditable="true"],
    .lesson-base-material-callout .lesson-base-material-callout-text[contenteditable="true"]
) {
    background: transparent !important;
    border-color: transparent !important;
    color: var(--kurs-callout-text) !important;
    caret-color: var(--kurs-callout-text) !important;
    box-shadow: none !important;
    outline: none !important;
    transition: none !important;
}
.cabinet :is(
    .lesson-rule .lesson-rule-text.lesson-student-rich-input[contenteditable="true"],
    .lesson-base-material-callout .lesson-base-material-callout-text[contenteditable="true"]
):is(:hover, :focus, :focus-visible) {
    background: transparent !important;
    border-color: transparent !important;
    color: var(--kurs-callout-text) !important;
    box-shadow: none !important;
    outline: none !important;
}
/* Selection highlight must be visible for the formatting toolbar,
   but not darken the entire edited field or turn its text white. */
.cabinet :is(
    .lesson-rule .lesson-rule-text.lesson-student-rich-input[contenteditable="true"],
    .lesson-base-material-callout .lesson-base-material-callout-text[contenteditable="true"]
)::selection,
.cabinet :is(
    .lesson-rule .lesson-rule-text.lesson-student-rich-input[contenteditable="true"],
    .lesson-base-material-callout .lesson-base-material-callout-text[contenteditable="true"]
) *::selection {
    background: var(--kurs-callout-selection) !important;
    color: var(--kurs-callout-text) !important;
}

/* Текст ячеек таблиц сохраняет абзацы и ручные переводы строк. */
.lesson-table td,
.lesson-student-table-input {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}