/* Media and EyePilot additions. Keep this after upgrade.css. */
.eye-playground  {
    margin: 36px 0 44px;
    padding: clamp(20px, 2.8vw, 38px);
    border: 1px solid var(--line);
    border-radius: 28px;
    background: linear-gradient(120deg, #19232e, #101822 68%);
}

.eye-introduction  {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 28px;
}

.eye-introduction h2  {
    font-size: clamp(25px, 2.55vw, 39px);
    line-height: 1.22;
    letter-spacing: -1.2px;
    margin-top: 16px;
}

.eye-introduction h2 em  {
    color: var(--accent);
    font-family: Georgia, serif;
    font-weight: 400;
}

.eye-introduction > p  {
    max-width: 365px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.9;
}

.eye-workspace  {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
}

.eye-stage  {
    position: relative;
    min-height: 365px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 1px solid #ffffff0d;
    border-radius: 20px;
    background-color: #0c121b;
    background-image: linear-gradient(#ffffff03 1px, transparent 1px), linear-gradient(90deg, #ffffff03 1px, transparent 1px);
    background-size: 26px 26px;
}

.eye-stage-header, .eye-stage-footer  {
    position: absolute;
    left: 22px;
    right: 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font: 9px/1.6 ui-monospace, monospace;
    letter-spacing: 1px;
    color: #7f91a6;
    z-index: 2;
}

.eye-stage-header  {
    top: 20px;
}

.eye-stage-footer  {
    bottom: 20px;
}

.eye-stage-footer code  {
    font: inherit;
    color: var(--accent);
    white-space: nowrap;
}

.eye-live  {
    color: var(--accent);
    white-space: nowrap;
}

.eye-live i  {
    display: inline-block;
    width: 5px;
    height: 5px;
    background: currentColor;
    border-radius: 50%;
    margin-right: 6px;
}

/* The supplied PNG layers share a 1690 x 1501 canvas. Keep that registration. */
.eye-character.mascot-character { position: relative; width: 440px; max-width: 96%; margin: 48px 0; transform: none; }
.mascot-face { position: relative; width: 100%; aspect-ratio: 1690 / 1501; isolation: isolate; }
.mascot-layer { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; user-select: none; }
.mascot-face .eye-socket { --eye-closed: 0; position: absolute; top: 51.09927%; width: 21.6568%; height: 22.31845%; }
.mascot-face .eye-left { left: 22.72189%; }
.mascot-face .eye-right { left: 54.91124%; }
.mascot-face .eye-white { position: relative; width: 100%; height: 100%; transform: scaleY(calc(1 - var(--eye-closed) * .98)); transition: transform 90ms ease; transform-origin: 50% 55%; border-radius: 50%; overflow: hidden; }
.mascot-eye-image { display: block; width: 100%; height: 100%; }
.mascot-face .eye-pupil { position: absolute; display: block; width: 54.09836%; height: 60.89552%; top: 26.56716%; left: 0; will-change: transform; }
.mascot-face .eye-left .eye-pupil { left: 35.79235%; }
.mascot-face .eye-right .eye-pupil { left: 12.56831%; }
.mascot-face .eye-pupil svg { display: block; width: 100%; height: 100%; }
.mascot-brow-left { transform-origin: 35% 49%; transform: translateY(calc(var(--eye-expression, 0) * -1.2%)) rotate(calc(var(--eye-expression, 0) * -10deg)); }
.mascot-brow-right { transform-origin: 65% 49%; transform: translateY(calc(var(--eye-expression, 0) * -1.2%)) rotate(calc(var(--eye-expression, 0) * 10deg)); }
.mascot-mouth { position: absolute; left: 42.89941%; top: 77.01532%; width: 14.20118%; height: 4.13058%; transform: scaleY(calc(1 + var(--eye-expression, 0) * .65)); }
[data-motion="off"] .mascot-face .eye-white { transition: none; }

.eye-controls  {
    display: grid;
    grid-template-columns: minmax(155px, 0.96fr) minmax(160px, 1fr);
    gap: 22px;
    min-width: 0;
    align-items: start;
}

.eye-look-control, .eye-expression-controls  {
    min-width: 0;
}

.eye-controller-heading  {
    font: 9px/1.5 ui-monospace, monospace;
    letter-spacing: 1.2px;
    color: #9eacbb;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 4px 0 12px;
}

.eye-controller-heading .icon  {
    width: 14px;
    height: 14px;
}

.eye-pad  {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    aspect-ratio: 1;
    max-width: 210px;
    margin: 0 auto;
    border-radius: 16px;
    border: 1px solid #a6b5834d;
    background: radial-gradient(ellipse, #24322766, #101820 68%);
    color: var(--accent);
    touch-action: none;
    cursor: grab;
    user-select: none;
}

.eye-pad:active  {
    cursor: grabbing;
}

.eye-pad-axis  {
    position: absolute;
    background: #a9bd9430;
    pointer-events: none;
}

.axis-x  {
    height: 1px;
    left: 12px;
    right: 12px;
    top: 50%;
}

.axis-y  {
    width: 1px;
    top: 12px;
    bottom: 12px;
    left: 50%;
}

.eye-pad-ring  {
    position: absolute;
    inset: 17px;
    border: 1px dashed #91a08330;
    border-radius: 50%;
}

.eye-stick  {
    position: relative;
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    color: #18210b;
    background: var(--accent);
    box-shadow: 0 0 24px #d5f66b20, inset 0 1px #ffffff80;
    pointer-events: none;
}

.eye-stick .icon  {
    width: 17px;
    height: 17px;
}

.eye-control-help  {
    font-size: 10px;
    text-align: center;
    line-height: 1.65;
    margin: 10px 0 14px;
    color: #8797a9;
}

.eye-slider  {
    display: block;
    min-width: 0;
    margin-bottom: 15px;
}

.eye-slider > span  {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    color: #b1bdcb;
    font-size: 11px;
    line-height: 1.6;
    margin-bottom: 7px;
}

.eye-slider output  {
    color: var(--accent);
    font: 10px/1.6 ui-monospace, monospace;
}

.eye-slider input  {
    display: block;
    width: 100%;
    height: 18px;
    accent-color: var(--accent);
    margin: 0;
}

.eye-look-sliders  {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.eye-look-sliders .eye-slider  {
    margin: 0;
}

.eye-expression-controls  {
    padding-top: 4px;
}

.eye-expression-controls .eye-slider  {
    margin-bottom: 21px;
}

.eye-options  {
    margin: 19px 0 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
}

.eye-options label  {
    display: flex;
    align-items: center;
    gap: 7px;
    min-height: 27px;
    font-size: 11px;
    color: #aab8c8;
}

.eye-options input  {
    accent-color: var(--accent);
    width: 15px;
    height: 15px;
}

.eye-action-buttons  {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.eye-action-buttons .button  {
    min-height: 38px;
    padding: 8px 11px;
    font-size: 10px;
    border-radius: 9px;
}

.eye-action-buttons .button-primary  {
    width: 100%;
}

.eye-reset  {
    margin-top: 15px;
    font-size: 11px;
    min-height: 32px;
}

.eye-reset .icon  {
    width: 13px;
    height: 13px;
}

.eye-footnote  {
    font: 10px/1.8 ui-monospace, monospace;
    color: #8190a1;
    margin-top: 20px;
}

[data-motion="off"] .eye-lid  {
    transition: none;
}

/* A real image gallery: full image first, then captions and keyboard-friendly thumbnails. */
.gallery-stage  {
    height: auto;
    min-height: 240px;
    max-height: 66vh;
    background: #090e16;
    aspect-ratio: 16/10;
}

.gallery-stage > img  {
    position: static;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.gallery-arrow  {
    position: absolute;
    top: calc(50% - 23px);
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: #101720e8;
    border: 1px solid #ffffff28;
    color: #f1f4f5;
    z-index: 2;
}

.gallery-prev  {
    left: 14px;
}

.gallery-next  {
    right: 14px;
}

.gallery-prev .icon  {
    transform: rotate(180deg);
}

.gallery-caption-row  {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 20px;
    padding: 17px 26px 12px;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.6;
}

.gallery-caption-row > span  {
    flex-shrink: 0;
    color: var(--accent);
    font: 11px/1.6 ui-monospace, monospace;
}

.gallery-thumbnails  {
    display: flex;
    gap: 10px;
    padding: 0 26px 22px;
    overflow: auto;
}

.gallery-thumbnails button  {
    flex-shrink: 0;
    width: 96px;
    height: 64px;
    border-radius: 10px;
    overflow: hidden;
    background: #151d28;
    border: 2px solid transparent;
    opacity: .6;
}

.gallery-thumbnails button[aria-pressed="true"]  {
    opacity: 1;
    border-color: var(--accent);
}

.gallery-thumbnails img  {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-source-row  {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 22px;
    padding: 16px 28px;
    border-bottom: 1px solid var(--line);
}

.media-source-row p  {
    max-width: 560px;
    font-size: 10px;
    line-height: 1.8;
    color: var(--subtle);
}

.media-source-row a  {
    font-size: 11px;
    flex-shrink: 0;
}

.media-stage.has-video  {
    min-height: 210px;
}

.media-stage .media-missing  {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 30px;
    text-align: center;
    color: var(--muted);
    font-size: 13px;
}

.media-stage .media-play  {
    z-index: 3;
}

/* The note keeps the GIF alongside the instructions, not behind a second click. */
.tip-dialog  {
    width: min(1140px, calc(100% - 56px));
    max-width: 1140px;
}

.reader-grid  {
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
    gap: 34px;
}

.reader-aside  {
    min-width: 0;
}

.tip-demo  {
    margin: 0 0 30px;
}

.tip-demo-heading  {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
    font: 9px/1.4 ui-monospace, monospace;
    letter-spacing: 1px;
    color: var(--accent);
}

.tip-demo-heading button  {
    font-size: 10px;
    min-height: 32px;
    letter-spacing: 0;
}

.tip-demo-stage  {
    min-width: 0;
    aspect-ratio: 16/9;
    border-radius: 15px;
    overflow: hidden;
    background: #0c131e;
    border: 1px solid var(--line);
    display: grid;
    place-items: center;
}

.tip-demo-stage img  {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.tip-demo-placeholder  {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 24px;
    text-align: center;
    color: var(--subtle);
    font-size: 12px;
    line-height: 1.8;
}

.tip-demo-placeholder .icon  {
    width: 32px;
    height: 32px;
    color: var(--accent);
}

.tip-demo figcaption  {
    margin-top: 11px;
    font-size: 10px;
    line-height: 1.8;
    color: var(--subtle);
}

.media-missing  {
    font-size: 11px;
    line-height: 1.7;
    color: var(--muted);
}

.copy-lines  {
    white-space: pre-line;
}

@media (min-width: 1450px)  {
    .eye-stage  {
        min-height: 390px;
    }
    .eye-controls  {
        gap: 30px;
        padding: 10px;
    }
}

@media (max-width: 1100px)  {
    .eye-workspace  {
        grid-template-columns: 1fr;
    }
    .eye-stage  {
        min-height: 330px;
    }
    .eye-controls  {
        grid-template-columns: 1fr 1.3fr;
        gap: 32px;
        max-width: 640px;
        width: 100%;
        margin: auto;
    }
    .eye-look-control  {
        max-width: 230px;
    }
    .eye-expression-controls  {
        padding-top: 10px;
    }
    .eye-action-buttons .button-primary  {
        width: auto;
    }
    .eye-introduction  {
        align-items: start;
    }
    .eye-introduction h2 em  {
        display: block;
    }
    .eye-introduction > p  {
        max-width: 300px;
    }
}

@media (max-width: 760px)  {
    .eye-playground  {
        border-radius: 21px;
        padding: 20px;
    }
    .eye-introduction  {
        display: block;
    }
    .eye-introduction > p  {
        max-width: none;
        margin-top: 16px;
        font-size: 12px;
    }
    .eye-introduction h2 em  {
        display: inline;
    }
    .eye-stage  {
        min-height: 310px;
    }
    .eye-stage-header, .eye-stage-footer  {
        left: 15px;
        right: 15px;
        font-size: 8px;
        letter-spacing: .5px;
    }
    .eye-controls  {
        grid-template-columns: 1fr 1fr;
        gap: 18px;
    }
    .eye-pad  {
        max-width: 185px;
    }
    .eye-control-help  {
        font-size: 9px;
    }
    .eye-look-sliders  {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .eye-character  {
        transform: scale(.91);
    }
    .eye-options  {
        gap: 6px;
        margin-top: 10px;
    }
    .eye-options label  {
        font-size: 10px;
    }
    .eye-expression-controls .eye-slider  {
        margin-bottom: 14px;
    }
    .eye-action-buttons .button-primary  {
        width: 100%;
    }
    .eye-action-buttons .button  {
        min-height: 40px;
    }
    .eye-action-buttons .button-quiet  {
        flex: 1;
        font-size: 9px;
        padding: 7px;
    }
    .eye-footnote  {
        font-size: 9px;
    }
    .eye-reset  {
        font-size: 10px;
    }
    .tip-dialog  {
        width: calc(100% - 16px);
    }
    .reader-grid  {
        grid-template-columns: 1fr;
        gap: 26px;
    }
    .reader-aside  {
        border-left: 0;
        border-top: 0;
        padding: 0;
        grid-row: 1;
    }
    .tip-demo  {
        margin-bottom: 22px;
    }
    .reader-aside > .eyebrow, .reader-aside > .reference-link, .reader-aside > .starter-note  {
        margin-top: 15px;
    }
    .tip-demo figcaption  {
        font-size: 11px;
    }
    .media-source-row  {
        flex-direction: column;
        align-items: start;
        gap: 8px;
        padding: 14px 20px;
    }
    .media-source-row p  {
        font-size: 11px;
    }
    .gallery-caption-row  {
        padding: 14px 18px;
    }
    .gallery-thumbnails  {
        padding: 0 18px 15px;
    }
    .gallery-arrow  {
        width: 42px;
        height: 42px;
    }
    .gallery-prev  {
        left: 8px;
    }
    .gallery-next  {
        right: 8px;
    }
}

@media (max-width: 380px)  {
    .eye-playground  {
        padding: 14px;
    }
    .eye-controls  {
        gap: 13px;
    }
    .eye-controller-heading  {
        font-size: 8px;
    }
    .eye-stage  {
        min-height: 280px;
    }
    .eye-character  {
        transform: scale(.81);
        max-width: 96%;
    }
    .eye-stage-footer  {
        font-size: 7px;
    }
    .eye-action-buttons .button-quiet  {
        font-size: 8px;
    }
}

@media print  {
    .eye-playground, .gallery-thumbnails, .gallery-arrow, .tip-demo-heading button  {
        display: none !important;
    }
}

.eye-action-buttons .button-quiet {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--line);
}

.eye-action-buttons .button-quiet:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--accent);
}