/* Obsidian Sand desktop treatment for Puzzles and Learn only.
   Existing smaller-screen layouts retain their original owners. */
@media (min-width: 1025px) {
    /* Puzzles: the next board position leads; future locks stay one disclosure. */
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-product-content {
        padding-top: 29px;
        gap: 20px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-page-heading {
        margin-bottom: 0;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-page-heading h1 {
        font-family: var(--tp-font-display);
        font-size: 30px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-page-heading > p:last-child {
        margin-top: 7px;
        color: var(--tp-color-text-muted);
        font-size: 14px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-daily {
        min-height: 108px;
        padding: 20px 24px;
        border-color: color-mix(in srgb, var(--tp-color-primary) 38%, var(--tp-color-border));
        border-radius: 9px;
        background: var(--tp-color-surface);
        box-shadow: 0 15px 30px -29px var(--tp-color-primary);
        transition: background-color 160ms ease, border-color 160ms ease;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-daily:hover {
        background: var(--tp-color-surface-raised);
        border-color: var(--tp-color-primary);
        transform: none;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-daily__copy strong {
        font-size: 19px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-daily__copy span {
        color: var(--tp-color-text-muted);
        font-size: 14px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-campaign {
        margin-top: 8px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-campaign h2 {
        font-family: var(--tp-font-display);
        font-size: 19px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 10px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-item {
        min-height: 72px;
        border-color: color-mix(in srgb, var(--tp-color-border) 72%, transparent);
        border-radius: 8px;
        background: var(--tp-color-surface);
        transition: background-color 160ms ease, border-color 160ms ease;
    }
    /* Legacy liquid-glass targets every direct puzzle-grid child with
       !important; neutralize it only for this desktop route. */
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) body:not(.game-active) #screen-puzzles #puzzles-grid > .tp-puzzle-item {
        background: var(--tp-color-surface) !important;
        border: 1px solid var(--tp-color-border) !important;
        box-shadow: none !important;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-item.is-next {
        grid-column: 1 / -1;
        min-height: 88px;
        padding-inline: 20px;
        border-color: color-mix(in srgb, var(--tp-color-primary) 45%, var(--tp-color-border));
        background: var(--tp-color-surface-raised);
        box-shadow: 0 12px 24px -25px var(--tp-color-primary);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) body:not(.game-active) #screen-puzzles #puzzles-grid > .tp-puzzle-item.is-next {
        background: var(--tp-color-surface-raised) !important;
        border-color: color-mix(in srgb, var(--tp-color-primary) 45%, var(--tp-color-border)) !important;
        box-shadow: 0 12px 24px -25px var(--tp-color-primary) !important;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-item.is-next strong {
        font-size: 16px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-item.is-next .tp-puzzle-item__lock {
        color: var(--tp-color-primary);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future {
        grid-column: 1 / -1;
        min-width: 0;
        border-top: 1px solid var(--tp-color-border);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) body:not(.game-active) #screen-puzzles #puzzles-grid > .tp-puzzle-future {
        padding: 0;
        border: 0 !important;
        border-top: 1px solid var(--tp-color-border) !important;
        border-radius: 0;
        background: transparent !important;
        box-shadow: none !important;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future summary {
        width: fit-content;
        min-height: 48px;
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--tp-color-text-muted);
        cursor: pointer;
        font-size: 13px;
        font-weight: 650;
        list-style: none;
        transition: color 160ms ease;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future summary::-webkit-details-marker { display: none; }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future summary::after {
        content: '⌄';
        color: var(--tp-color-primary);
        font-size: 18px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future[open] summary::after { transform: rotate(180deg); }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future summary:hover { color: var(--tp-color-text); }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future__grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 8px;
        padding-top: 10px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future .tp-puzzle-item {
        min-height: 64px;
        padding: 10px;
        grid-template-columns: 30px minmax(0, 1fr) 16px;
        opacity: .72;
        background: var(--tp-color-page-secondary);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-puzzles .tp-puzzle-future .tp-puzzle-item__icon {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }

    /* Learn leads with the board and a clearly distinct continuation action. */
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-product-content {
        padding-top: 25px;
        gap: 0;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero {
        min-height: 244px;
        padding: 27px 32px;
        grid-template-columns: minmax(0, 1fr) minmax(360px, .78fr);
        border-color: color-mix(in srgb, var(--tp-color-border) 70%, transparent);
        border-radius: 10px;
        background: var(--tp-color-surface);
        box-shadow: 0 16px 32px -32px var(--tp-color-primary);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero h1 {
        max-width: 620px;
        font-family: var(--tp-font-display);
        font-size: clamp(25px, 2.3vw, 31px);
        line-height: 1.27;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero__copy > p:last-of-type {
        margin-top: 11px;
        color: var(--tp-color-text-muted);
        font-size: 14px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero__actions {
        margin-top: 17px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero__visual {
        height: 184px;
        min-height: 184px;
        border-radius: 7px;
        box-shadow: 0 16px 24px -22px var(--tp-color-page);
        transform: none;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero__visual img {
        filter: saturate(.7) brightness(.73) contrast(1.08);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero__visual::after {
        background: linear-gradient(90deg, color-mix(in srgb, var(--tp-color-page) 22%, transparent), transparent 65%);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero__book,
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-hero__cap { display: none; }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-continue {
        min-height: 90px;
        margin-top: 13px;
        padding: 16px 21px;
        border-color: color-mix(in srgb, var(--tp-color-primary) 37%, var(--tp-color-border));
        border-radius: 9px;
        background: var(--tp-color-surface-raised);
        box-shadow: 0 10px 22px -25px var(--tp-color-primary);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-continue h2 {
        font-family: var(--tp-font-display);
        font-size: 17px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-continue p:last-child {
        color: var(--tp-color-text-muted);
        font-size: 13px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-continue .tp-button {
        min-height: 42px;
        border-radius: 7px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn :is(.tp-learning-section, .tp-learning-practice, .tp-learning-lessons) {
        margin-top: 24px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-section-heading h2 {
        font-family: var(--tp-font-display);
        font-size: 17px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-categories {
        gap: 0;
        border-top: 1px solid var(--tp-color-border);
        border-bottom: 1px solid var(--tp-color-border);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-category {
        min-height: 75px;
        padding: 12px 18px;
        border: 0;
        border-radius: 0;
        background: transparent;
        transform: none;
        transition: background-color 160ms ease, color 160ms ease;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-category:first-child {
        border-right: 1px solid var(--tp-color-border);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-category:hover {
        background: var(--tp-color-surface);
        transform: none;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-category small {
        color: var(--tp-color-text-muted);
        font-size: 13px;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-practice-card {
        min-height: 112px;
        border-color: color-mix(in srgb, var(--tp-color-border) 70%, transparent);
        border-radius: 8px;
        background: var(--tp-color-surface);
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-lesson {
        min-height: 58px;
        border-color: var(--tp-color-border);
        border-radius: 6px;
        background: transparent;
        transition: background-color 160ms ease, border-color 160ms ease;
    }
    html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-learn .tp-learning-lesson:hover {
        background: var(--tp-color-surface);
    }
}