/* Aufgaben-Canvas: docked im Fluss ODER freischwebend */

.exercise-ink {
    margin-top: 0.65rem;
    padding-top: 0.55rem;
    border-top: 1px dashed rgba(26, 26, 46, 0.12);
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
    overflow-x: clip;
}

/* Gemeinsamer Modus-Umschalter: Fragen ↔ Zeichnen */
.exercise-help-modes {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem 0.75rem;
    margin: 0 0 0.45rem;
}

.exercise-help-modes__label {
    display: none;
}

.exercise-help-modes__seg {
    display: inline-flex;
    align-items: stretch;
    padding: 0.16rem;
    border-radius: 999px;
    background: #f5f0e8;
    border: 1px solid rgba(26, 26, 46, 0.1);
    box-sizing: border-box;
}

.exercise-help-modes__btn {
    appearance: none;
    margin: 0;
    border: 1px solid transparent;
    background: transparent;
    color: #5a6170;
    font: inherit;
    font-size: 0.86rem;
    font-weight: 600;
    line-height: 1.2;
    padding: 0.38rem 0.95rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.exercise-help-modes__btn:hover {
    color: #1a1a2e;
    background: rgba(255, 255, 255, 0.55);
}

.exercise-help-modes__btn.is-active,
.exercise-help-modes__btn[aria-selected="true"] {
    color: #1a1a2e;
    background: rgba(200, 169, 74, 0.3);
    box-shadow: none;
    border: 1px solid rgba(200, 169, 74, 0.45);
}

.exercise-help-modes--active .exercise-help-modes__label {
    color: #3d684a;
}

.exercise-ink__toggle {
    display: none !important;
}

.exercise-ink__panel[hidden] {
    display: none !important;
}

/* Default / docked: normales Layout-Element, scrollt mit — Kachelbreite, kein Bleed */
.exercise-ink__panel,
.exercise-ink__panel--dock {
    position: relative;
    z-index: auto;
    margin: 0.55rem 0 0;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    width: auto;
    max-width: 100%;
    height: min(58vh, 520px);
    min-width: 0;
    min-height: 220px;
    overflow: hidden;
}

.exercise-ink__panel--dock {
    left: auto;
    top: auto;
    right: auto;
    bottom: auto;
}

.exercise-ink__panel--dock .exercise-ink__focus {
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
}

/* Dock-Vorschau: Platzhalter unter der Aufgabe, Inhalt darunter fährt nach unten */
.exercise-ink__dock-spacer {
    box-sizing: border-box;
    width: 100%;
    margin: 0.55rem 0 0;
    border: 2px dashed rgba(74, 124, 89, 0.45);
    border-radius: 12px;
    background: rgba(74, 124, 89, 0.08);
    pointer-events: none;
    transition: height 0.12s ease;
}

.exercise-ink__panel--float.exercise-ink__panel--dock-ready {
    outline: 2px solid rgba(74, 124, 89, 0.55);
    outline-offset: 2px;
    box-shadow: 0 14px 36px rgba(74, 124, 89, 0.22);
}

/* Unter sticky Topbar (z-index siehe style_bubble_menu / style_tablet) */
body.page-mathe-learning,
body.page-physik-learning {
    --mg-ink-header-clear: var(--mg-mathe-header-h, 5.5rem);
}

/* Freischwebend über der Seite */
.exercise-ink__panel--float {
    position: fixed !important;
    z-index: 95;
    margin: 0 !important;
    max-width: min(100vw, 960px);
    max-height: 100vh;
    min-width: 280px;
}

.exercise-ink__panel--float.exercise-ink__panel--snap {
    max-width: min(42vw, 560px);
    border-radius: 0;
    max-height: calc(100dvh - var(--mg-ink-header-clear, 5.5rem));
}

.exercise-ink__panel--float.exercise-ink__panel--snap .exercise-ink__focus {
    border-radius: 0;
    box-shadow: none;
    border-left: none;
    border-right: none;
    border-top: none;
}

.exercise-ink__panel--float.exercise-ink__panel--snap .exercise-ink__focus-bar {
    padding-top: 0.35rem;
}

/* Zwei-Spalten: Platz für angedocktes Canvas am Rand — Padding am Container
   (nicht Margin am Content), damit width:100% die Kachel nicht sprengt. */
body.ink-win-snap-left,
body.ink-win-snap-right {
    --ink-snap-w: min(42vw, 560px);
}

body.ink-win-snap-left .container {
    box-sizing: border-box;
    padding-left: var(--ink-snap-w) !important;
}

body.ink-win-snap-right .container {
    box-sizing: border-box;
    padding-right: var(--ink-snap-w) !important;
}

body.ink-win-snap-left .container > .content,
body.ink-win-snap-left #content,
body.ink-win-snap-right .container > .content,
body.ink-win-snap-right #content {
    max-width: min(1080px, 100%);
    width: 100%;
    box-sizing: border-box;
    min-width: 0;
}

.exercise-ink__panel--float .exercise-ink__focus {
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.18);
}

.exercise-ink__focus {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    width: 100%;
    max-width: 100%;
    height: 100%;
    min-width: 0;
    min-height: 0;
    box-sizing: border-box;
    padding: 0.55rem 0.65rem 0.65rem;
    background: #f4f6f8;
    border: 1px solid rgba(26, 26, 46, 0.14);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.exercise-ink__focus-bar {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.45rem 0.65rem;
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow: hidden;
    cursor: grab;
    user-select: none;
    touch-action: none;
    padding: 0.15rem 0.1rem;
}

.exercise-ink__focus-bar:active {
    cursor: grabbing;
}

.exercise-ink__focus-title {
    margin: 0;
    font-size: 0.92rem;
    font-weight: 700;
    color: #1a1a2e;
    flex: 0 0 auto;
}

.exercise-ink__focus-task {
    margin: 0;
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.88rem;
    line-height: 1.35;
    color: #2a2f3a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.exercise-ink__focus-hint {
    margin: 0;
    font-size: 0.76rem;
    line-height: 1.3;
    color: #5a6170;
    flex: 0 1 auto;
    min-width: 0;
    max-width: 40%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.exercise-ink__focus-hint strong {
    color: #2a2f3a;
}

.exercise-ink__close {
    flex: 0 0 auto;
    order: 20;
    margin-left: auto;
    border: 1px solid rgba(26, 26, 46, 0.16);
    background: #fff;
    color: #5a6170;
    border-radius: 8px;
    width: 2.25rem;
    height: 2.25rem;
    min-width: 2.25rem;
    padding: 0;
    font: inherit;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    z-index: 2;
    -webkit-tap-highlight-color: transparent;
}

.exercise-ink__close:hover,
.exercise-ink__close:focus-visible {
    background: rgba(26, 26, 46, 0.05);
    color: #1a1a2e;
    outline: none;
}

.exercise-ink__panel--float .exercise-ink__focus-hint,
.exercise-ink__panel--snap .exercise-ink__focus-hint {
    display: none;
}

.exercise-ink__orient {
    display: none;
    margin: 0;
    padding: 0.3rem 0.5rem;
    font-size: 0.76rem;
    color: #3d684a;
    background: rgba(74, 124, 89, 0.1);
    border-radius: 8px;
}

.exercise-ink__window-hint {
    margin: 0;
    padding: 0.2rem 0.65rem 0.35rem;
    font-size: 0.72rem;
    line-height: 1.35;
    color: #6b7280;
}

.exercise-ink__workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.55rem;
    align-items: stretch;
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
    width: 100%;
    max-width: 100%;
}

.exercise-ink__workspace--side {
    grid-template-columns: minmax(0, 1fr) minmax(160px, 280px);
}

.exercise-ink__stage {
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.exercise-ink__canvas-wrap {
    position: relative;
    flex: 1 1 auto;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    min-height: 180px;
    border: 1px solid rgba(26, 26, 46, 0.12);
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    /* Oben-links: sonst springt der Canvas-Rand beim Column-/Seitenwechsel */
    align-items: flex-start;
    justify-content: flex-start;
    background:
        linear-gradient(rgba(74, 124, 89, 0.07) 1px, transparent 1px) 0 0 / 100% 28px,
        #fff;
    touch-action: none;
}

.exercise-ink__canvas {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    cursor: crosshair;
    touch-action: none;
    background: transparent;
}

.exercise-ink__box {
    position: absolute;
    pointer-events: none;
    border: 2px solid rgba(61, 104, 74, 0.85);
    background: rgba(74, 124, 89, 0.12);
    border-radius: 4px;
    box-sizing: border-box;
}

.exercise-ink__box[hidden] {
    display: none !important;
}

.exercise-ink__toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem 0.65rem;
    flex: 0 0 auto;
}

.exercise-ink__eraser {
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(26, 26, 46, 0.18);
    background: #fff;
    color: #2a2f3a;
    border-radius: 8px;
    padding: 0.28rem 0.65rem;
    cursor: pointer;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.2;
}

.exercise-ink__eraser:hover {
    background: rgba(26, 26, 46, 0.04);
    border-color: rgba(74, 124, 89, 0.4);
}

.exercise-ink__eraser.is-active,
.exercise-ink__eraser[aria-pressed="true"] {
    background: rgba(74, 124, 89, 0.12);
    border-color: rgba(74, 124, 89, 0.55);
    color: #1f4d36;
}

.exercise-ink__canvas--erase {
    cursor: cell;
}

/* Stift Farbe / Stärke */
.exercise-ink__pen-menu {
    position: relative;
    display: inline-flex;
}

.exercise-ink__pen-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: 1px solid rgba(26, 26, 46, 0.18);
    background: #fff;
    color: #2a2f3a;
    border-radius: 8px;
    padding: 0.28rem 0.55rem;
    cursor: pointer;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.2;
}

.exercise-ink__pen-btn:hover,
.exercise-ink__pen-menu.is-open .exercise-ink__pen-btn {
    background: rgba(26, 26, 46, 0.04);
    border-color: rgba(74, 124, 89, 0.4);
}

.exercise-ink__pen-swatch {
    width: 0.85rem;
    height: 0.85rem;
    border-radius: 999px;
    border: 1px solid rgba(15, 23, 42, 0.2);
    flex-shrink: 0;
}

.exercise-ink__pen-size-preview {
    width: 1.1rem;
    height: 1.1rem;
    position: relative;
    flex-shrink: 0;
    display: inline-block;
}

.exercise-ink__pen-size-preview::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: var(--pen-w, 3px);
    height: var(--pen-w, 3px);
    border-radius: 999px;
    background: var(--pen-color, #1a1a2e);
}

.exercise-ink__pen-dropdown {
    position: absolute;
    left: 0;
    bottom: calc(100% + 6px);
    z-index: 40;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    padding: 0.45rem;
    background: #fff;
    border: 1px solid rgba(26, 26, 46, 0.14);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.14);
    min-width: 7.5rem;
}

.exercise-ink__pen-dropdown[hidden] {
    display: none !important;
}

.exercise-ink__pen-dropdown button {
    border: 1px solid transparent;
    background: #f8fafc;
    border-radius: 8px;
    padding: 0.35rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font: inherit;
}

.exercise-ink__pen-dropdown button:hover,
.exercise-ink__pen-dropdown button.is-active {
    border-color: rgba(74, 124, 89, 0.45);
    background: rgba(74, 124, 89, 0.1);
}

.exercise-ink__pen-dropdown[data-pen-dropdown="color"] button span {
    display: block;
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 999px;
    border: 1px solid rgba(15, 23, 42, 0.15);
}

.exercise-ink__pen-dropdown--sizes {
    flex-direction: column;
    flex-wrap: nowrap;
    min-width: 8.5rem;
}

.exercise-ink__pen-dropdown--sizes button {
    justify-content: flex-start;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: #1a1a2e;
    padding: 0.4rem 0.55rem;
}

.exercise-ink__pen-size-dot {
    width: 1.15rem;
    height: 1.15rem;
    position: relative;
    flex-shrink: 0;
    display: inline-block;
}

.exercise-ink__pen-size-dot::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: var(--pen-w, 3px);
    height: var(--pen-w, 3px);
    border-radius: 999px;
    background: #1a1a2e;
}

.exercise-ink__clear,
.exercise-ink__ai-help {
    border-radius: 8px;
    padding: 0.32rem 0.65rem;
    font: inherit;
    font-size: 0.84rem;
    cursor: pointer;
}

.exercise-ink__clear {
    border: 1px solid rgba(26, 26, 46, 0.18);
    background: #fff;
    color: #2a2f3a;
}

.exercise-ink__clear:hover {
    background: rgba(26, 26, 46, 0.04);
}

.exercise-ink__ai-help {
    border: 1px solid rgba(61, 104, 74, 0.45);
    background: rgba(74, 124, 89, 0.12);
    color: #2a2f3a;
    font-weight: 650;
}

.exercise-ink__ai-help[hidden] {
    display: none;
}

.exercise-ink__ai-help:hover {
    background: rgba(74, 124, 89, 0.2);
}

.exercise-ink__status {
    font-size: 0.8rem;
    color: #5a6170;
    min-height: 1.1em;
}

.exercise-ink__status--warn {
    color: #9a3412;
    font-weight: 650;
    background: rgba(234, 88, 12, 0.12);
    border: 1px solid rgba(194, 65, 12, 0.35);
    border-radius: 8px;
    padding: 0.28rem 0.55rem;
}

.exercise-ink__side {
    min-width: 0;
    min-height: 0;
    display: none;
    flex-direction: column;
    gap: 0.45rem;
}

.exercise-ink__workspace--side .exercise-ink__side {
    display: flex;
}

.exercise-ink__ocr {
    flex: 0 1 auto;
    padding: 0.65rem 0.7rem;
    background: #fff;
    border: 1px solid rgba(26, 26, 46, 0.12);
    border-radius: 10px;
}

.exercise-ink__ocr[hidden] {
    display: none !important;
}

.exercise-ink__chat-slot {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.exercise-ink__chat-slot:empty {
    display: none;
}

.exercise-ink__chat-slot > .ai-help {
    margin: 0;
    padding: 0;
    border: none;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.exercise-ink__chat-slot > .ai-help .ai-help__panel {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
    max-height: none;
    height: 100%;
    box-shadow: none;
}

.exercise-ink__chat-slot > .ai-help .ai-help__messages {
    flex: 1 1 auto;
    max-height: none;
}

.exercise-ink__confirm {
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
}

.exercise-ink__confirm[hidden] {
    display: none !important;
}

.exercise-ink__confirm-title {
    margin: 0 0 0.25rem;
    font-size: 0.9rem;
    font-weight: 700;
}

.exercise-ink__confirm-hint {
    margin: 0 0 0.4rem;
    font-size: 0.76rem;
    color: #5a6170;
}

.exercise-ink__confirm-text {
    display: block;
    width: 100%;
    box-sizing: border-box;
    min-height: 6.5rem;
    padding: 0.45rem 0.55rem;
    border: 1px solid rgba(26, 26, 46, 0.16);
    border-radius: 8px;
    font: inherit;
    font-size: 0.88rem;
    line-height: 1.4;
    resize: vertical;
    background: #fff;
}

.exercise-ink__confirm-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.45rem;
}

.exercise-ink__confirm-ok,
.exercise-ink__confirm-cancel {
    border-radius: 8px;
    padding: 0.35rem 0.7rem;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 650;
    cursor: pointer;
}

.exercise-ink__confirm-ok {
    border: 1px solid rgba(61, 104, 74, 0.5);
    background: rgba(74, 124, 89, 0.16);
}

.exercise-ink__confirm-cancel {
    border: 1px solid rgba(26, 26, 46, 0.16);
    background: #fff;
    color: #5a6170;
}

/* Resize: im Dock nur Höhe (S); float alle Ränder; Input-Notizen alle Ränder eingebettet */
.exercise-ink__rh {
    position: absolute;
    z-index: 4;
    background: transparent;
    touch-action: none;
}

.exercise-ink__panel--dock:not(.exercise-ink__panel--notes) .exercise-ink__rh--n,
.exercise-ink__panel--dock:not(.exercise-ink__panel--notes) .exercise-ink__rh--e,
.exercise-ink__panel--dock:not(.exercise-ink__panel--notes) .exercise-ink__rh--w,
.exercise-ink__panel--dock:not(.exercise-ink__panel--notes) .exercise-ink__rh--ne,
.exercise-ink__panel--dock:not(.exercise-ink__panel--notes) .exercise-ink__rh--nw,
.exercise-ink__panel--dock:not(.exercise-ink__panel--notes) .exercise-ink__rh--sw {
    display: none;
}

.exercise-ink__rh--n {
    top: 0;
    left: 10px;
    right: 10px;
    height: 7px;
    cursor: ns-resize;
}

.exercise-ink__rh--s {
    bottom: 0;
    left: 10px;
    right: 10px;
    height: 7px;
    cursor: ns-resize;
}

.exercise-ink__rh--e {
    top: 10px;
    right: 0;
    bottom: 10px;
    width: 7px;
    cursor: ew-resize;
}

.exercise-ink__rh--w {
    top: 10px;
    left: 0;
    bottom: 10px;
    width: 7px;
    cursor: ew-resize;
}

.exercise-ink__rh--ne {
    top: 0;
    right: 0;
    width: 12px;
    height: 12px;
    cursor: nesw-resize;
}

.exercise-ink__rh--nw {
    top: 0;
    left: 0;
    width: 12px;
    height: 12px;
    cursor: nwse-resize;
}

.exercise-ink__rh--se {
    bottom: 0;
    right: 0;
    width: 1.35rem;
    height: 1.35rem;
    cursor: nwse-resize;
    background: transparent;
}

.exercise-ink__rh--se::after {
    content: "";
    position: absolute;
    right: 0.35rem;
    bottom: 0.35rem;
    width: 0.55rem;
    height: 0.55rem;
    border-right: 2px solid rgba(26, 26, 46, 0.32);
    border-bottom: 2px solid rgba(26, 26, 46, 0.32);
    border-radius: 0 0 2px 0;
    pointer-events: none;
}

.exercise-ink__rh--sw {
    bottom: 0;
    left: 0;
    width: 12px;
    height: 12px;
    cursor: nesw-resize;
}

@media (max-width: 860px) {
    .exercise-ink__workspace--side {
        grid-template-columns: minmax(0, 1fr);
    }

    .exercise-ink__focus-hint {
        display: none;
    }
}

@media (max-width: 640px) and (orientation: portrait) {
    .exercise-ink__panel:not([hidden]) .exercise-ink__orient {
        display: block;
    }
}