/* Schéma du système — la colonne qui guide sa lecture (parcours, message, aide) et la scène où se
   placent les ensembles et les nœuds, que relie le tracé de sgbl_diagram.js. Seuils de la scène : sa
   disposition empilée sous 600 px, que le script lit aussi. */

@layer page {
    .node {
        --node-color: var(--immersion-ink);
    }
    .node[data-node="episteme"] {
        --node-color: var(--immersion-action);
    }
    .node[data-node="context-system"] {
        --node-color: var(--immersion-signal);
    }
    .set--perimeter .node {
        --node-color: var(--immersion-perimeter);
    }

    .diagram-guide {
        min-width: 0;
    }
    .routes {
        margin: 32px 0 0;
        padding: 0;
    }
    .routes strong,
    .routes small {
        display: block;
    }
    .routes small {
        margin-top: 7px;
    }
    .routes-arrow {
        margin-left: auto;
    }
    .routes [aria-pressed="true"] .routes-arrow {
        transform: translate(2px, -2px);
    }
    .routes-message {
        margin-top: 28px;
        padding: 4px 0 4px 16px;
        display: grid;
        grid-template-columns: auto 1fr;
        align-content: start;
        gap: 12px;
        min-height: 110px;
    }
    .routes-message p,
    .diagram-help,
    .diagram-text p {
        max-width: var(--canon-width-reading);
    }
    .routes-message p {
        margin: 0;
    }
    .routes-index {
        padding-top: 4px;
    }
    .diagram-help {
        margin: 20px 0 1em;
    }
    .diagram {
        width: 100%;
        max-width: none;
        min-width: 0;
        margin: 0;
        justify-self: end;
    }
    .scene {
        position: relative;
        width: 100%;
        aspect-ratio: 1.05;
        min-height: 610px;
    }
    .scene::before {
        position: absolute;
        inset: 8% -8%;
    }
    .scene-rays,
    .scene > canvas {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
    }
    .scene-rays {
        overflow: hidden;
    }
    .scene-rays i {
        position: absolute;
        width: 58%;
        height: 1px;
        transform: rotate(-24deg);
    }
    .scene-rays i:nth-child(1) {
        left: -30%;
        top: 30%;
    }
    .scene-rays i:nth-child(2) {
        left: 55%;
        top: 13%;
    }
    .scene-rays i:nth-child(3) {
        left: 62%;
        top: 90%;
    }
    .scene > canvas {
        z-index: 3;
    }
    .set {
        position: absolute;
    }
    .set-label {
        position: absolute;
        top: 19px;
        left: 20px;
        right: 10px;
    }
    .set-caption {
        display: block;
        padding-top: 7px;
    }
    .set--outside {
        left: 0;
        top: 29%;
        width: 24%;
        height: 26%;
    }
    .set--system {
        left: 28%;
        top: 1%;
        width: 71%;
        height: 96%;
    }
    .set--server {
        left: 5%;
        right: 5%;
        top: 29%;
        bottom: 4%;
    }
    .set--perimeter {
        left: 5%;
        right: 5%;
        top: 68%;
        bottom: 4%;
    }
    .set--perimeter > .set-label {
        top: 12px;
        left: 12px;
    }
    .node {
        position: absolute;
        height: 84px;
        z-index: 5;
    }
    .node[data-node="internet"] {
        left: 8%;
        right: 8%;
        top: 37%;
        height: 80px;
    }
    .node[data-node="mobilized-intelligences"] {
        left: 9%;
        right: 9%;
        top: 13%;
        height: 86px;
    }
    .node[data-node="episteme"] {
        left: 10%;
        width: 69%;
        top: 15%;
    }
    .node[data-node="context-system"] {
        left: 22%;
        width: 69%;
        top: 43%;
    }
    .node[data-node="infrastructure"] {
        left: 4%;
        width: 45%;
        top: 32%;
        height: 74px;
    }
    .node[data-node="applications"] {
        right: 4%;
        width: 42%;
        top: 32%;
        height: 74px;
    }
    .node small {
        display: block;
        margin-top: 7px;
    }
    .node-icon {
        position: absolute;
        top: 12px;
        right: 14px;
        width: 16px;
        height: 16px;
    }
    .node-icon--diamond {
        transform: rotate(45deg);
        width: 11px;
        height: 11px;
    }
    .node-icon--square {
        width: 10px;
        height: 10px;
    }
    .node-handle {
        position: absolute;
        bottom: 1px;
        right: 1px;
        z-index: 6;
    }
    .diagram figcaption {
        max-width: var(--canon-width-reading);
        margin-top: 24px;
    }
    .diagram-text summary {
        padding: 12px 0;
    }
    .diagram-text p {
        margin: 0 0 1em;
    }
    @media (max-width: 800px) {
        .diagram-guide {
            max-width: 72ch;
        }
        .routes-message {
            min-height: 72px;
        }
        .diagram {
            width: min(100%, 800px);
            justify-self: center;
        }
    }
    @media (max-width: 600px) {
        .routes-message {
            min-height: 110px;
        }
        .scene {
            aspect-ratio: auto;
            height: 1000px;
            min-height: 0;
        }
        .set--outside {
            top: 0;
            left: 0;
            width: 65%;
            height: 136px;
        }
        .set--system {
            top: 158px;
            left: 0;
            width: 100%;
            height: 842px;
        }
        .set--server {
            left: 5%;
            right: 5%;
            top: 206px;
            bottom: 20px;
        }
        .set--perimeter {
            top: 344px;
            left: 5%;
            right: 5%;
            bottom: 14px;
        }
        .node[data-node="internet"] {
            top: 48px;
            height: 70px;
        }
        .node[data-node="mobilized-intelligences"] {
            left: 8%;
            right: 8%;
            top: 80px;
            height: 86px;
        }
        .node[data-node="episteme"] {
            left: 8%;
            width: 78%;
            top: 60px;
        }
        .node[data-node="context-system"] {
            left: 14%;
            width: 78%;
            top: 212px;
        }
        .node[data-node="infrastructure"] {
            left: 7%;
            width: 79%;
            top: 44px;
            height: 78px;
        }
        .node[data-node="applications"] {
            left: 14%;
            right: auto;
            width: 79%;
            top: 145px;
            height: 78px;
        }
    }

    .routes li {
        border-bottom: 1px solid var(--immersion-line);
    }
    .routes li:has([aria-pressed="true"]) {
        border-bottom-color: var(--immersion-action);
    }
    .routes-message {
        border-left: 1px solid var(--immersion-signal);
    }
    .scene {
        isolation: isolate;
    }
    .scene::before {
        background: radial-gradient(ellipse at 66% 35%, color-mix(in srgb, var(--immersion-action) 12%, transparent), transparent 55%), radial-gradient(ellipse at 72% 78%, color-mix(in srgb, var(--immersion-signal) 9%, transparent), transparent 50%);
        filter: blur(32px);
    }
    .scene-rays i {
        background: linear-gradient(90deg, transparent, var(--immersion-signal), transparent);
        opacity: 0.15;
    }
    .scene-rays i:nth-child(2) {
        background: linear-gradient(90deg, transparent, var(--immersion-action), transparent);
    }
    .set {
        border: 1px solid var(--immersion-line);
        border-radius: 12px;
    }
    .set--outside {
        border-color: var(--immersion-line);
        background: linear-gradient(135deg, var(--immersion-glass-tint), transparent 75%);
    }
    .set--system {
        border-color: var(--immersion-envelope-line);
        background: linear-gradient(145deg, var(--immersion-envelope-glow), transparent 35%);
        box-shadow: 0 0 38px var(--immersion-envelope-glow);
    }
    .set--server {
        border-color: var(--immersion-server-line);
        background: radial-gradient(ellipse at 55% 40%, var(--immersion-node-tint), transparent 75%);
    }
    .set--perimeter {
        border-color: var(--immersion-perimeter-line);
        background: linear-gradient(130deg, var(--immersion-perimeter-tint), transparent 75%);
    }
    .node[data-reached] .button--style-node {
        border-color: var(--node-color);
        box-shadow: 0 0 24px color-mix(in srgb, var(--node-color) 16%, transparent), inset 0 0 18px color-mix(in srgb, var(--node-color) 5%, transparent);
    }
    .node-icon {
        background: currentColor;
        opacity: 0.85;
    }
    .node-icon--wheel {
        mask: url("/assets/icons/ferris-wheel.svg") center / contain no-repeat;
    }
    .node-icon--layers {
        mask: url("/assets/icons/layers-arrow-down.svg") center / contain no-repeat;
    }
    .node-icon--ring {
        background: none;
        border: 1px solid currentColor;
        border-radius: 50%;
    }
    .node-icon--diamond {
        background: none;
        border: 1px solid currentColor;
    }
    .node-icon--square {
        opacity: 0.7;
    }

    .routes {
        list-style: none;
    }
    .routes strong {
        font-size: 0.98rem;
        font-weight: 570;
    }
    .routes small {
        color: var(--immersion-muted);
        font-size: 0.72rem;
        line-height: 1.5;
    }
    .routes-number {
        color: var(--immersion-muted);
        font-size: 0.7rem;
        letter-spacing: 0.12em;
        font-variant-numeric: tabular-nums;
    }
    .routes-arrow {
        color: var(--immersion-muted);
    }
    .routes [aria-pressed="true"] .routes-arrow {
        color: var(--immersion-action);
    }
    .routes-message p,
    .diagram-text p {
        color: var(--immersion-muted);
        font-size: 0.85rem;
        line-height: 1.65;
    }
    .routes-index {
        color: var(--immersion-signal);
        font-size: 0.65rem;
        letter-spacing: 0.13em;
        white-space: nowrap;
    }
    .diagram-help {
        font-size: 0.7rem;
        line-height: 1.6;
        color: var(--immersion-muted);
    }
    .scene {
        color: var(--immersion-ink);
    }
    .scene::before {
        content: "";
    }
    .set-label {
        color: var(--immersion-muted);
        font-size: 0.62rem;
        font-weight: 570;
        text-transform: uppercase;
        letter-spacing: 0.16em;
    }
    .set-caption {
        font-size: 0.56rem;
        font-weight: 450;
        letter-spacing: 0.08em;
        color: var(--immersion-muted);
    }
    .set--system > .set-label {
        color: var(--immersion-ink);
    }
    .set--perimeter > .set-label {
        color: var(--immersion-perimeter);
    }
    .node {
        color: var(--immersion-ink);
    }
    .node strong {
        font-family: var(--canon-font-figura);
        font-size: clamp(0.92rem, 1.12vw, 1.12rem);
        font-weight: 580;
        line-height: 1.1;
        letter-spacing: -0.02em;
    }
    .node small {
        font-size: 0.66rem;
        color: var(--immersion-muted);
        line-height: 1.35;
    }
    .node-icon {
        color: var(--node-color);
    }
    .diagram figcaption {
        color: var(--immersion-muted);
        font-size: 0.82rem;
        line-height: 1.5;
    }
    .diagram-text summary {
        color: var(--immersion-muted);
        font-size: 0.78rem;
        list-style: disclosure-closed;
    }
    .diagram-text[open] summary {
        list-style: disclosure-open;
    }
    @media (max-width: 600px) {
        .set-label {
            font-size: 0.68rem;
        }
        .set-caption {
            font-size: 0.58rem;
        }
        .node strong {
            font-size: 1rem;
        }
        .node small {
            font-size: 0.74rem;
        }
    }

    .routes li {
        user-select: none;
    }
    .scene-rays,
    .scene::before,
    .scene > canvas,
    .set-label {
        pointer-events: none;
    }
    .routes-arrow {
        transition: transform 140ms ease;
    }
    .node[data-dragging] .button--style-handle {
        cursor: grabbing;
    }
    .diagram-text summary {
        cursor: pointer;
    }
    @media (prefers-reduced-motion: reduce) {
        .routes-arrow {
            transition: none;
        }
    }
}