:root {
    --bg: #0e1013;
    --panel: #171a20;
    --panel-2: #1d212a;
    --line: #2b2f36;
    --ink: #e7ecf3;
    --muted: #8b95a4;
    --accent: #4dabf7;
    --go: #40c057;
    --warn: #fab005;
    --danger: #fa5252;
    --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    font-size: 14px;
}

.app { max-width: 1280px; margin: 0 auto; padding: 16px; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.topbar-right { display: flex; align-items: center; gap: 12px; }
h1 { font-size: 22px; margin: 0; font-weight: 700; }
.topbar h1:focus { outline: none; }
.brand { display: flex; align-items: baseline; flex-wrap: wrap; column-gap: 8px; }
.brand .sub { margin: 0; color: var(--muted); font-weight: 400; font-size: 14px; }
.learn a { color: var(--accent); }

.engine-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 4px 4px 4px 12px;
}
.engine-label { font-size: 12px; color: var(--muted); display: flex; align-items: baseline; gap: 6px; }
.engine-label b { color: var(--accent); font-size: 13px; }
.engine-sub { color: var(--muted); font-size: 11px; }

.status {
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--panel);
}
.status-running { color: var(--go); border-color: var(--go); }
.status-paused { color: var(--warn); border-color: var(--warn); }
.status-solved { color: var(--accent); border-color: var(--accent); }
.status-idle { color: var(--muted); }

.grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 16px;
    align-items: start;
}
@media (max-width: 900px) {
    .grid { grid-template-columns: 1fr; }
}

/* Board column */
.board-col {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px;
    min-width: 0;
}
.controls { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }

/* Empty state — no population loaded yet: a single centred column for one grid column */
.grid.grid-empty { grid-template-columns: minmax(0, 480px) 380px; justify-content: center; }
@media (max-width: 900px) { .grid.grid-empty { grid-template-columns: 1fr; } }
.board-col.empty { display: flex; align-items: center; justify-content: center; min-height: 320px; }
.empty-state { text-align: center; max-width: 380px; padding: 28px 8px; }
.empty-state .empty-icon { font-size: 46px; line-height: 1; margin-bottom: 12px; }
.empty-state h2 { margin: 0 0 8px; font-size: 18px; }
.empty-state p { color: var(--muted); font-size: 13px; line-height: 1.5; margin: 0 0 18px; }
.empty-controls { justify-content: center; margin-bottom: 0; }

.board-caption { color: var(--muted); font-size: 12px; margin-bottom: 6px; min-height: 16px; overflow-wrap: anywhere; }
.board-caption b { color: var(--accent); }
.canvas-wrap {
    background: #14171c;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 8px;
    display: flex;
    justify-content: center;
    min-height: 200px;
}
canvas { display: block; max-width: 100%; image-rendering: auto; }

.net-wrap {
    margin-top: 12px;
    background: #14171c;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 8px 10px 10px;
}
.net-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 6px;
    flex-wrap: wrap;
    gap: 6px;
}
.net-legend { display: flex; align-items: center; gap: 6px; }
.net-legend .dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; margin-left: 6px; }
.net-legend .dot.pos { background: #40c057; }
.net-legend .dot.neg { background: #4dabf7; }
#net, #chart { display: block; width: 100%; }
.net-wrap.chart-top { margin-top: 0; margin-bottom: 12px; }

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-top: 14px;
}
@media (max-width: 560px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0; /* let the grid track shrink so a large value wraps instead of overflowing the tile */
}
.stat-label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; }
.stat-value { font-size: 18px; font-weight: 700; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }

/* Population management — save / load / delete grouped in one card */
.persist {
    margin-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 12px;
}
.persist-head {
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.persist-row { display: flex; gap: 8px; flex-wrap: wrap; }
/* Load + Delete share the row evenly */
.persist-row > .filebtn, .persist-row > .btn-danger { flex: 1; justify-content: center; }
.txt {
    flex: 1;
    background: var(--panel);
    border: 1px solid var(--line);
    color: var(--ink);
    border-radius: 8px;
    padding: 7px 10px;
    font-size: 13px;
    min-width: 0;
}
/* Feedback toast — floats over the page so it never shifts the layout (auto-dismisses) */
.toast {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1000;
    max-width: 360px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 15px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 12px 32px rgba(0, 0, 0, .45);
    animation: toast-in .18s ease-out;
}
.toast-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    font-size: 12px;
    flex: none;
}
.toast-ok { background: color-mix(in srgb, var(--go) 14%, var(--panel)); border-color: color-mix(in srgb, var(--go) 45%, var(--line)); color: var(--ink); }
.toast-ok .toast-icon { background: var(--go); color: #08240f; }
.toast-err { background: color-mix(in srgb, var(--danger) 14%, var(--panel)); border-color: color-mix(in srgb, var(--danger) 45%, var(--line)); color: var(--ink); }
.toast-err .toast-icon { background: var(--danger); color: #2a0000; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: none; } }

/* "Load from file" is a <label> wrapping a hidden <InputFile>, styled to match the buttons. */
.filebtn { display: inline-flex; align-items: center; text-align: center; }
.filebtn input[type="file"] { display: none; }
.filebtn.disabled { opacity: .45; cursor: not-allowed; }

/* Buttons */
.btn {
    background: var(--panel-2);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 9px 16px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: filter .12s, border-color .12s;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-sm { padding: 7px 12px; font-size: 13px; }
.btn-go { background: var(--go); color: #08240f; border-color: var(--go); }
/* The two consent-bar answers. Equal prominence is what the EDPB's dark-pattern guidance asks for,
   but equal *dullness* is not the same thing: two plain buttons left neither looking like an answer.
   Both are filled, identically, in the accent rather than the "go" green, so neither reads as the
   recommended one. */
.btn-choice { background: var(--accent); color: #06243b; border-color: var(--accent); }
.btn-start-icon { display: inline-block; margin-right: 7px; font-size: 13px; line-height: 1; }
.btn-warn { background: var(--warn); color: #2a2000; border-color: var(--warn); }
.btn-loop-detected { background: color-mix(in srgb, var(--accent) 22%, var(--panel-2)); border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); animation: loop-alert 1.2s ease-in-out infinite; }
.btn-danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, var(--line)); }
.btn-danger:hover:not(:disabled) { background: color-mix(in srgb, var(--danger) 16%, var(--panel-2)); border-color: var(--danger); }

@keyframes loop-alert { 50% { filter: brightness(1.14); } }

/* Config column */
.config-col { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.config-footer { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; margin-top: 2px; }
.config-footer .btn { width: 100%; }
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: visible;
}
.panel > summary {
    cursor: pointer;
    padding: 11px 14px;
    font-weight: 700;
    list-style: none;
    user-select: none;
    background: var(--panel-2);
}
.panel > summary::-webkit-details-marker { display: none; }
.panel > summary::before { content: "▸ "; color: var(--muted); }
.panel[open] > summary::before { content: "▾ "; }
.panel-body { padding: 10px 14px 14px; display: flex; flex-direction: column; gap: 9px; }
.hint { color: var(--muted); font-size: 11.5px; margin: 0 0 2px; }

.field {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 10px;
}
.field > label, .field > .field-label { color: var(--ink); font-size: 13px; display: inline-flex; align-items: center; gap: 4px; min-width: 0; }
/* Compact, conventional "info" icon with a Material-style floating tooltip. */
.info-button { position: relative; box-sizing: border-box; flex: 0 0 14px; display: inline-grid; place-items: center; width: 14px; height: 14px; padding: 0; border: 1px solid currentColor; border-radius: 50%; background: transparent; color: var(--muted); font: 700 9px/1 system-ui, sans-serif; cursor: help; }
.info-button:hover, .info-button:focus-visible { color: var(--accent); outline: none; }
.info-tooltip { position: absolute; z-index: 20; left: 0; bottom: calc(100% + 7px); width: min(260px, calc(100vw - 32px)); padding: 8px 10px; border-radius: 4px; background: #292d35; color: #f4f6fa; box-shadow: 0 4px 12px #0006; font: 12px/1.4 system-ui, sans-serif; font-weight: 400; text-align: left; white-space: normal; pointer-events: none; opacity: 0; transform: translateY(3px); transition: opacity .12s ease, transform .12s ease; }
.info-tooltip::after { content: ""; position: absolute; top: 100%; left: 5px; border: 5px solid transparent; border-top-color: #292d35; }
.info-button:hover .info-tooltip, .info-button:focus-visible .info-tooltip { opacity: 1; transform: translateY(0); }
.field.readonly .val { color: var(--muted); }
.field input[type=number] {
    width: 68px;
    background: var(--panel-2);
    border: 1px solid var(--line);
    color: var(--ink);
    border-radius: 7px;
    padding: 6px 8px;
    font-size: 13px;
    text-align: right;
}
.num-wrap { display: flex; align-items: center; gap: 6px; }
.range-wrap { display: flex; align-items: center; gap: 8px; }
.range-wrap input[type=range] { width: 150px; }
.num-wrap input[type=range] { width: 130px; }
.num-wrap .suffix { color: var(--muted); font-size: 12px; }
.field > input[type=range] { width: 150px; accent-color: var(--accent); }
.field input[type=range] {
    appearance: none;
    height: 18px;
    margin: 0;
    cursor: pointer;
    background: transparent;
}
.field input[type=range]::-webkit-slider-runnable-track {
    height: 5px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: color-mix(in srgb, var(--accent) 20%, var(--panel));
}
.field input[type=range]::-webkit-slider-thumb {
    appearance: none;
    width: 15px;
    height: 15px;
    margin-top: -6px;
    border: 3px solid var(--panel-2);
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 60%, var(--line));
}
.field input[type=range]::-moz-range-track {
    height: 5px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: color-mix(in srgb, var(--accent) 20%, var(--panel));
}
.field input[type=range]::-moz-range-progress { height: 5px; border-radius: 999px; background: var(--accent); }
.field input[type=range]::-moz-range-thumb {
    width: 11px;
    height: 11px;
    border: 3px solid var(--panel-2);
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 60%, var(--line));
}
.field input[type=range]:focus-visible { outline: none; }
.field input[type=range]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent); }
.field input[type=range]:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent); }
.field select {
    background: var(--panel-2);
    border: 1px solid var(--line);
    color: var(--ink);
    border-radius: 7px;
    padding: 6px 8px;
    font-size: 13px;
    min-width: 130px;
}
.field input[type=color] {
    width: 44px; height: 28px; padding: 0; border: 1px solid var(--line);
    border-radius: 6px; background: var(--panel-2); cursor: pointer;
}
.field .val { color: var(--ink); font-variant-numeric: tabular-nums; min-width: 44px; text-align: right; }
.field input:disabled, .field select:disabled { opacity: .45; cursor: not-allowed; }

/* Toggle */
.toggle {
    width: 44px; height: 24px; border-radius: 999px; border: 1px solid var(--line);
    background: var(--panel-2); position: relative; cursor: pointer; padding: 0;
    transition: background .15s;
}
.toggle .knob {
    position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%;
    background: var(--muted); transition: left .15s, background .15s;
}
.toggle.on { background: color-mix(in srgb, var(--go) 30%, var(--panel-2)); border-color: var(--go); }
.toggle.on .knob { left: 22px; background: var(--go); }
.toggle:disabled { opacity: .45; cursor: not-allowed; }

#blazor-error-ui {
    background: var(--warn); color: #2a2000; position: fixed; bottom: 0; left: 0; right: 0;
    padding: 10px 14px; display: none; z-index: 1000;
}

/* Consent is intentionally app-owned: no third-party script loads until acceptance. */
.privacy-dialog p { margin: 4px 0 0; color: var(--muted); line-height: 1.45; }
.consent-actions { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.consent-buttons { display: flex; gap: 9px; width: 100%; }
.consent-buttons .btn { flex: 1 1 0; min-width: 0; white-space: nowrap; }
.consent-actions a, .privacy-page a { color: var(--accent); }
.privacy-settings-button {
    position: fixed; z-index: 1050; right: 12px; bottom: 12px;
    color: var(--muted); background: var(--panel); border: 1px solid var(--line);
    border-radius: 999px; padding: 6px 10px; cursor: pointer; font-size: 12px;
}
/* The first-visit question: a bar along the bottom, not a dialog, so nothing behind it is blocked.
   Above the Manage-cookies pill (which it replaces while shown), below the settings dialog. */
.consent-bar {
    position: fixed; z-index: 1100; left: 0; right: 0; bottom: 0;
    display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px 20px;
    padding: 12px 52px 12px 18px;
    background: var(--panel); border-top: 1px solid var(--accent); box-shadow: 0 -8px 28px #0008;
}
.consent-bar-text { flex: 0 1 680px; min-width: 0; }
.consent-bar-text p { margin: 3px 0 0; color: var(--muted); line-height: 1.45; font-size: 13px; }
.consent-bar-text a { color: var(--accent); }
.consent-bar-buttons { display: flex; gap: 9px; flex: none; }
.consent-bar-buttons .btn { min-width: 104px; }
.consent-bar-close {
    position: absolute; top: 8px; right: 10px; width: 32px; height: 32px;
    border: 0; border-radius: 6px; background: none; color: var(--muted); font-size: 15px; cursor: pointer;
}
.consent-bar-close:hover { color: var(--ink); }
@media (max-width: 520px) {
    .consent-bar { padding: 12px 14px; }
    .consent-bar-text { padding-right: 30px; }
    .consent-bar-buttons { width: 100%; }
    .consent-bar-buttons .btn { flex: 1 1 0; min-width: 0; }
}
.privacy-backdrop {
    position: fixed; z-index: 1200; inset: 0; display: grid; place-items: center;
    padding: 16px; background: #000b;
}
.privacy-dialog { width: min(560px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.privacy-dialog:focus { outline: none; }
.privacy-dialog h2 { margin: 0 0 8px; }
.privacy-dialog .consent-actions { margin-top: 16px; }
.consent-options { display: grid; gap: 10px; margin-top: 16px; }
.consent-option {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 12px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px;
}
.consent-option p { margin: 4px 0 0; color: var(--muted); line-height: 1.4; }
.consent-option input { width: 20px; height: 20px; flex: none; accent-color: var(--go); }
.consent-always { color: var(--go); font-size: 12px; font-weight: 700; white-space: nowrap; }
.privacy-page { max-width: 760px; margin: 0 auto; padding: 28px 18px 70px; line-height: 1.6; }
.privacy-page h1, .privacy-page h2 { margin-top: 1.4em; }
.learn-article h3 { margin-top: 1.1em; font-size: 15px; }
.learn-article .lead { font-size: 17px; color: var(--ink); }
.learn-article .faq { margin-top: 0.4em; }
.learn-cta { margin: 22px 0 8px; }
/* The CTA is an <a> styled as a button; override .privacy-page's link colour + underline. */
.learn-cta a.btn { display: inline-flex; align-items: center; gap: 7px; text-decoration: none; }
.learn-article a.btn-go { color: #08240f; }

/* Inline SVG illustrations (network + vision), reused on the learn page and the homepage. */
.diagram-svg { display: block; width: 100%; height: auto; }
.diagram-svg text { font-family: inherit; }
.learn-figure { margin: 22px 0 8px; }
.learn-figure figcaption { color: var(--muted); font-size: 12px; line-height: 1.5; margin-top: 8px; }
.learn-figure.net { max-width: 460px; }
.learn-figure.vision { max-width: 340px; }

/* Dedicated setup screen shown between the landing page and the simulation. */
.population-setup {
    max-width: 1040px;
    margin: 34px auto 0;
    padding: 32px;
    border: 1px solid var(--line);
    border-radius: calc(var(--radius) + 4px);
    background: var(--panel);
}
.setup-heading { max-width: 720px; }
.setup-heading h2 { margin: 0 0 8px; font-size: 24px; }
.setup-heading p:last-child { color: var(--muted); line-height: 1.55; margin-bottom: 0; }
.setup-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    margin-top: 26px;
}
.setup-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel-2);
}
.setup-card h3 { margin: 0 0 4px; font-size: 15px; }
.setup-card .field { grid-template-columns: minmax(0, 1fr) auto; }
.setup-card .field input[type=range] { width: 110px; }
.setup-card .field select { min-width: 112px; max-width: 150px; }
.setup-advanced { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-2); }
.setup-advanced > summary { cursor: pointer; padding: 12px 16px; font-size: 13px; font-weight: 700; }
.setup-advanced[open] > summary { border-bottom: 1px solid var(--line); }
.setup-advanced > .setup-card { border: 0; border-radius: 0; background: transparent; }
.setup-memory {
    margin-top: 14px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--accent) 5%, var(--panel-2));
}
.setup-memory-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.setup-memory-head span { font-size: 13px; font-weight: 700; }
.setup-memory-head strong { color: var(--accent); font-size: 15px; }
.setup-memory p { margin: 6px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.setup-memory-warn { border-color: color-mix(in srgb, var(--warn) 58%, var(--line)); background: color-mix(in srgb, var(--warn) 9%, var(--panel-2)); }
.setup-memory-warn .setup-memory-head strong { color: var(--warn); }
.setup-actions { display: flex; justify-content: space-between; gap: 12px; margin-top: 22px; }

/* Crawlable educational content below the interactive lab. */
.learn {
    margin-top: 42px;
    padding: 34px;
    border: 1px solid var(--line);
    border-radius: calc(var(--radius) + 4px);
    background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 6%, var(--panel)), var(--panel) 35%);
    line-height: 1.65;
}
.learn h2 { margin: 0 0 10px; font-size: 20px; }
.learn p { color: var(--muted); }
.learn-heading { max-width: 780px; }
.learn-heading > p:last-child { font-size: 15px; margin-bottom: 0; }
.eyebrow {
    color: var(--go) !important;
    margin: 0 0 4px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
}
.learn-section { margin-top: 34px; padding-top: 30px; border-top: 1px solid var(--line); }
.concepts-heading { max-width: 720px; }
.concepts-heading > p:last-child { margin-bottom: 0; }
.concept-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 16px 0 0;
}
.concept-card {
    min-width: 0;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel-2);
}
.concept-icon {
    display: block;
    color: var(--accent);
    font-size: 20px;
    margin-bottom: 12px;
}
.concept-card h3 { margin: 0; font-size: 15px; }
.concept-card p { margin: 7px 0 0; font-size: 13px; }
.experiments { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr); gap: 32px; }
.experiments p { margin-bottom: 0; }
.experiments ul { margin: 0; padding-left: 20px; color: var(--muted); }
.experiments li + li { margin-top: 7px; }
.launch-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
    align-items: center;
    gap: 32px;
    padding: 28px;
    border: 1px solid color-mix(in srgb, var(--go) 45%, var(--line));
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--go) 7%, var(--panel-2));
}
.launch-card p:last-child { margin-bottom: 0; }
.launch-copy { min-width: 0; }
.launch-copy h2 { font-size: clamp(28px, 3.5vw, 44px); line-height: 1.12; letter-spacing: -.025em; margin: 14px 0 20px; }
.launch-copy > p:not(.eyebrow) { max-width: 420px; margin-bottom: 24px; }
.launch-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.launch-illustration { min-width: 0; width: 100%; max-width: 380px; justify-self: center; margin: 8px 0; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); transform: rotate(-2deg); }
.launch-board { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 4px; }
.launch-board-background { fill: var(--bg); }
.launch-grid-line { stroke: var(--line); stroke-width: 1; }
.launch-snake { stroke: var(--warn); }
.launch-snake-head { fill: var(--warn); }
.launch-snake-eye { fill: var(--bg); }
.launch-food { fill: var(--danger); }
.launch-illustration figcaption { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 12px; margin-top: 10px; font-size: 11px; color: var(--muted); }
.btn-large { display: inline-flex; align-items: center; justify-content: center; min-width: 170px; padding: 12px 18px; }
.btn-population { min-width: 210px; padding: 15px 24px; font-size: 16px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { padding: 14px 2px; cursor: pointer; font-weight: 700; }
.faq details p { margin: -3px 2px 16px; max-width: 850px; }
.learn-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px 26px;
    flex-wrap: wrap;
    margin-top: 34px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    font-size: 13px;
}
.learn-footer a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--panel);
    color: var(--ink);
    text-decoration: none;
    font-weight: 600;
    transition: color .12s, border-color .12s, background .12s;
}
.learn-footer a::before { content: "→"; color: var(--accent); font-weight: 700; }
.learn-footer a:hover { border-color: var(--accent); background: var(--panel-2); }

@media (max-width: 800px) {
    .setup-grid { grid-template-columns: 1fr; }
    .concept-cards { grid-template-columns: 1fr; }
    .experiments { grid-template-columns: 1fr; gap: 10px; }
    .launch-card { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 520px) {
    .toast { top: 12px; left: 12px; right: 12px; max-width: none; }
    .privacy-dialog .consent-buttons { flex-direction: column; }
    .population-setup { padding: 22px 16px; margin-top: 20px; }
    .setup-actions, .launch-actions { flex-direction: column; }
    .setup-actions .btn, .launch-actions .btn { width: 100%; }
    .launch-actions .btn { min-width: 0; }
    .setup-memory-head { align-items: flex-start; flex-direction: column; gap: 2px; }
    .num-field { grid-template-columns: 1fr; gap: 5px; }
    .num-field .num-wrap { justify-content: space-between; }
    .num-field .num-wrap input[type=range] { flex: 1; min-width: 0; }
    .learn { padding: 22px 18px; margin-top: 28px; }
}
@media (max-width: 420px) {
    .app { padding: 10px; }
    .board-col { padding: 10px; }
    .net-legend { flex-wrap: wrap; }
}