/* The 3D Gallery (js/gallery3d.js). Load after improve.css. */
.g3d-intro {
    font-family: var(--serif);
    font-size: clamp(19px, 1.6vw, 23px);
    color: var(--c-ink-3);
    max-width: 38em;
    margin: 28px 0 28px;
}

.g3d {
    position: relative;
}

.g3d-stage {
    position: relative;
    height: clamp(440px, 74vh, 740px);
    background: #2a241d;
    border: 1px solid var(--c-ink);
    overflow: hidden;
}

.g3d-stage canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
    touch-action: none;
}

.g3d-stage canvas:active {
    cursor: grabbing;
}

/* HUD */
.g3d-hud {
    position: absolute;
    top: 16px;
    left: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
    pointer-events: none;
}

.g3d-hud > * {
    pointer-events: auto;
}

.g3d-pass {
    background: rgba(246, 244, 238, .94);
    border: 1px solid var(--c-ink);
    padding: 10px 14px 12px;
}

.g3d-pass-head {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    font-size: 10px;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--c-ink-3);
    margin-bottom: 8px;
}

.g3d-pass-head strong {
    font-weight: 500;
    color: var(--c-ink);
}

.g3d-stamps {
    display: grid;
    grid-template-columns: repeat(5, 26px);
    gap: 6px;
}

.g3d-stamp {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 1px dashed var(--c-stone);
    background: transparent;
    font: 400 11px var(--sans);
    color: var(--c-muted-aa);
    cursor: pointer;
    padding: 0;
    transition: transform .2s var(--ease), background .2s ease;
}

.g3d-stamp:hover {
    transform: scale(1.12);
}

.g3d-stamp.got {
    border: 1px solid #8a6a2e;
    background: #c9a44f;
    color: #2b2010;
    font-weight: 500;
    animation: g3d-pop .45s var(--ease);
}

@keyframes g3d-pop {
    0% { transform: scale(.4) rotate(-20deg); }
    70% { transform: scale(1.25) rotate(6deg); }
    100% { transform: scale(1); }
}

.g3d-actions {
    display: flex;
    gap: 8px;
}

.g3d .g3d-actions .btn-ghost {
    color: var(--c-bg);
    border-color: rgba(246, 244, 238, .7);
    background: rgba(27, 27, 25, .35);
}

.g3d-hint {
    position: absolute;
    left: 50%;
    bottom: 16px;
    transform: translateX(-50%);
    margin: 0;
    padding: 8px 14px;
    background: rgba(27, 27, 25, .6);
    color: var(--c-bg);
    font-size: 11px;
    letter-spacing: .14em;
    text-transform: uppercase;
    white-space: nowrap;
    pointer-events: none;
}

.g3d-tip {
    position: absolute;
    top: 0;
    left: 0;
    padding: 6px 10px;
    background: var(--c-ink);
    color: var(--c-bg);
    font-family: var(--serif);
    font-size: 17px;
    pointer-events: none;
    white-space: nowrap;
}

.g3d-loading {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    margin: 0;
    padding: 24px;
    text-align: center;
    color: var(--c-bg);
    font-family: var(--serif);
    font-size: 22px;
}

.g3d-stage.no-webgl {
    height: auto;
    min-height: 200px;
}

.g3d-stage.no-webgl canvas {
    display: none;
}

.g3d-stage.no-webgl .g3d-hint {
    display: none;
}

/* Artifact card */
.g3d-panel {
    position: absolute;
    top: 16px;
    right: 16px;
    bottom: 16px;
    width: min(400px, 44%);
    overflow-y: auto;
    background: var(--c-bg);
    border: 1px solid var(--c-ink);
    padding: 26px 26px 22px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, .35);
    animation: g3d-in .35s var(--ease);
}

@keyframes g3d-in {
    from { opacity: 0; transform: translateX(16px); }
}

.g3d-close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 32px;
    height: 32px;
    border: 0;
    background: transparent;
    font-size: 26px;
    line-height: 1;
    color: var(--c-ink-3);
    cursor: pointer;
}

.g3d-kicker {
    font-size: 10px;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--c-muted-aa);
    margin: 0 36px 8px 0;
}

.g3d-title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 34px;
    line-height: 1.1;
    color: var(--c-ink);
    margin: 0 0 14px;
}

.g3d-text {
    font-size: 15px;
    margin: 0 0 12px;
}

.g3d-sub {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--c-accent);
    margin: 18px 0 6px;
}

.g3d-fact {
    font-family: var(--serif);
    font-size: 18px;
    line-height: 1.4;
    background: var(--c-accent-dim);
    border-left: 3px solid var(--c-accent);
    padding: 10px 14px;
    margin: 16px 0 18px;
}

.g3d-fact span {
    font-style: italic;
    color: var(--c-accent);
}

.g3d-quiz {
    border-top: 1px solid var(--c-border);
    padding-top: 14px;
}

.g3d-q-label {
    font-size: 10px;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: #8a6a2e;
    margin: 0 0 4px;
}

.g3d-q {
    font-family: var(--serif);
    font-size: 21px;
    color: var(--c-ink);
    line-height: 1.25;
    margin: 0 0 10px;
}

.g3d-opts {
    display: grid;
    gap: 6px;
}

.g3d-opt {
    text-align: left;
    font: 400 14px var(--sans);
    color: var(--c-ink-2);
    background: #fff;
    border: 1px solid var(--c-border);
    padding: 10px 12px;
    cursor: pointer;
    transition: border-color .15s ease, background .15s ease;
}

.g3d-opt:hover:not(:disabled) {
    border-color: var(--c-ink);
}

.g3d-opt:disabled {
    cursor: default;
}

.g3d-opt.right {
    background: var(--c-accent-dim);
    border-color: var(--c-accent);
    color: var(--c-ink);
}

.g3d-opt.right::before {
    content: "✓ ";
    color: var(--c-accent);
}

.g3d-opt.wrong {
    color: var(--c-error-ink);
    border-color: var(--c-error-ink);
    text-decoration: line-through;
    opacity: .75;
    animation: g3d-shake .35s;
}

@keyframes g3d-shake {
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.g3d-explain {
    font-size: 14px;
    color: var(--c-ink-3);
    margin: 10px 0 0;
    min-height: 1em;
}

.g3d-nav {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin-top: 20px;
}

/* Completion card */
.g3d-done {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    background: rgba(27, 27, 25, .55);
    padding: 16px;
}

.g3d-done[hidden] {
    display: none;
}

.g3d-done-card {
    max-width: 440px;
    background: var(--c-bg);
    border: 1px solid var(--c-ink);
    padding: 30px;
    text-align: center;
    animation: g3d-pop .5s var(--ease);
}

.g3d-done-card h3 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 32px;
    color: var(--c-ink);
    margin: 6px 0 10px;
}

.g3d-done-card p {
    margin: 0 0 18px;
}

.g3d-done-card .g3d-actions {
    justify-content: center;
    flex-wrap: wrap;
}

.g3d-done-card a.btn {
    text-decoration: none;
}

/* Artifact list (keyboard and small screens) */
.g3d-index {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px;
    margin-top: 16px;
}

.g3d-item {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 10px;
    text-align: left;
    background: transparent;
    border: 1px solid var(--c-border);
    padding: 10px 12px;
    cursor: pointer;
    font-family: var(--sans);
    color: var(--c-ink-2);
    transition: border-color .15s ease, background .15s ease;
}

.g3d-item:hover,
.g3d-item[aria-current="true"] {
    border-color: var(--c-ink);
    background: #fff;
}

.g3d-item-no {
    grid-row: span 2;
    font-size: 10px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--c-muted-aa);
    padding-top: 4px;
}

.g3d-item-title {
    font-family: var(--serif);
    font-size: 18px;
    color: var(--c-ink);
    line-height: 1.2;
}

.g3d-item-when {
    font-size: 12px;
    color: var(--c-muted-aa);
}

.g3d-item.got .g3d-item-no::after {
    content: " ✓";
    color: #8a6a2e;
}

@media (max-width: 760px) {
    .g3d-stage {
        height: 62vh;
        min-height: 380px;
    }

    .g3d-panel {
        position: static;
        width: auto;
        margin-top: 12px;
        box-shadow: none;
        animation: none;
    }

    .g3d-hud {
        top: 10px;
        left: 10px;
    }

    .g3d-pass {
        padding: 8px 10px 10px;
    }

    .g3d-stamps {
        grid-template-columns: repeat(10, 20px);
        gap: 4px;
    }

    .g3d-stamp {
        width: 20px;
        height: 20px;
        font-size: 9px;
    }

    .g3d-hint {
        font-size: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .g3d-stamp.got,
    .g3d-panel,
    .g3d-done-card,
    .g3d-opt.wrong {
        animation: none;
    }
}