/* Distill-style article on white around a dark view of the brain.
   Palette: placeholder until a sourced palette is chosen (see PALETTES in main.js). */
:root {
    --bg: #ffffff;
    --surface: #ffffff;
    --text: rgba(0, 0, 0, 0.8);
    --text-2: rgba(0, 0, 0, 0.6);
    --text-3: rgba(0, 0, 0, 0.45);
    --hairline: rgba(0, 0, 0, 0.1);
    --accent: #c2185b;
    --accent-ink: #ffffff;
    --bar: rgba(194, 24, 91, 0.16);
    --viewport-bg: #0d0f14;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Helvetica Neue", Arial, sans-serif;
    --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    --text-col: 648px;
    --page-col: 984px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 17px/1.7 var(--font);
}

a { color: inherit; text-decoration-color: rgba(0, 0, 0, 0.3); text-underline-offset: 2px; }
a:hover { text-decoration-color: currentColor; }

nav.site, .title, .byline, .prose, .appendix > * {
    max-width: var(--text-col);
    margin-left: auto;
    margin-right: auto;
}

nav.site { padding: 14px 16px 0; font-size: 13px; max-width: var(--page-col); }
nav.site a { color: var(--text-3); text-decoration: none; }
nav.site a:hover { color: var(--text); }

.title { padding: 56px 16px 28px; }

.title h1 {
    margin: 0 0 12px;
    font-size: clamp(36px, 6vw, 50px);
    line-height: 1.1;
    font-weight: 700;
    color: rgba(0, 0, 0, 0.85);
}

.description { margin: 0; font-size: 21px; line-height: 1.5; color: var(--text-2); }

/* --- Demo */

.viewport {
    position: relative;
    width: 100%;
    height: clamp(340px, min(66vh, 100vw), 780px);
    background: var(--viewport-bg);
    color: rgba(255, 255, 255, 0.75);
    overflow: hidden;
}

.viewport.light { color: rgba(0, 0, 0, 0.65); }

.viewport { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); }
.pane { position: relative; min-width: 0; min-height: 0; }
.pane + .pane { border-left: 1px solid rgba(128, 128, 128, 0.25); }
.pane canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; touch-action: none; }

@media (max-width: 700px) {
    .viewport { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 2fr) minmax(0, 3fr); height: clamp(520px, 120vw, 760px); }
    .pane + .pane { border-left: 0; border-top: 1px solid rgba(128, 128, 128, 0.25); }
}

.touch {
    position: absolute;
    left: 14px;
    top: 10px;
    font-size: 12px;
    opacity: 0.85;
    pointer-events: none;
}

.status {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 16px;
    text-align: center;
    font-size: 15px;
    pointer-events: none;
}

.status:empty { display: none; }

.clock {
    position: absolute;
    left: 14px;
    top: 10px;
    font: 12px var(--mono);
    font-variant-numeric: tabular-nums;
    opacity: 0.8;
    pointer-events: none;
}

.tip {
    position: absolute;
    padding: 1px 8px;
    border-radius: 4px;
    font-size: 12px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    pointer-events: none;
    white-space: nowrap;
}

.hint {
    position: absolute;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
    margin: 0;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0.75;
    pointer-events: none;
    transition: opacity 0.6s;
}

body:not(.ready) .hint, body.clicked .brain-pane .hint, body.dragged .fly-pane .hint { opacity: 0; }

.panel { max-width: var(--page-col); margin: 0 auto; padding: 14px 16px 0; }

.controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 28px;
    font-size: 14px;
}

.stims { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.stims .label { margin-right: 4px; }

.slider { display: inline-flex; align-items: center; gap: 10px; }
.slider input { width: 140px; accent-color: var(--accent); }
.slider output { font: 13px var(--mono); color: var(--text-2); min-width: 4.5em; font-variant-numeric: tabular-nums; }

.buttons { display: inline-flex; gap: 8px; }

.label {
    color: var(--text-3);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

button {
    font: inherit;
    font-size: 14px;
    padding: 4px 12px;
    border: 1px solid rgba(0, 0, 0, 0.18);
    border-radius: 5px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
}

button:hover { border-color: rgba(0, 0, 0, 0.4); }

button.chip { border-radius: 999px; padding: 3px 12px; }
button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.results {
    margin-top: 16px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 24px;
    align-items: start;
}

@media (max-width: 760px) {
    .results { grid-template-columns: minmax(0, 1fr); }
}

.list-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.chart-title { font-weight: 600; font-size: 13px; color: var(--text); }

#top { list-style: none; margin: 6px 0 0; padding: 0; font-size: 13px; }
#top li {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto 4.5em;
    gap: 12px;
    padding: 3px 6px;
    border-bottom: 1px solid var(--hairline);
    cursor: pointer;
}
#top li.empty { display: block; color: var(--text-3); cursor: default; }
#top li:hover .nm { text-decoration: underline; }
#top .bar { position: absolute; inset: 0 auto 0 0; width: calc(var(--w) * 100%); background: var(--bar); pointer-events: none; }
#top .nm, #top .cls, #top .hz { position: relative; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#top .cls { color: var(--text-3); font-size: 12px; }
#top .hz { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }

.readouts { margin: 0; border-top: 1px solid var(--hairline); }
.readouts div { display: flex; justify-content: space-between; gap: 8px; padding: 5px 0; border-bottom: 1px solid var(--hairline); }
.readouts dt { font-size: 12px; color: var(--text-2); }
.readouts dd { margin: 0; font: 13px var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }

.card { margin-top: 14px; padding: 10px 12px; border: 1px solid var(--hairline); border-radius: 6px; font-size: 13px; line-height: 1.5; }
.card[hidden] { display: none; }
.card-head { display: flex; justify-content: space-between; align-items: center; font-size: 15px; }
.card p { margin: 4px 0; color: var(--text-2); }
.card .card-rate { font-family: var(--mono); color: var(--text); }
.card-buttons { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.card-buttons a { font-size: 13px; color: var(--text-2); }
button.close { border: 0; padding: 0 4px; font-size: 18px; line-height: 1; color: var(--text-3); }

/* --- Byline */

.byline {
    margin-top: 36px;
    padding: 12px 16px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    font-size: 13px;
    line-height: 1.5;
}

.byline h3 {
    margin: 0 0 4px;
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-3);
}

.byline p { margin: 0; color: var(--text); }

@media (max-width: 560px) {
    .byline { grid-template-columns: minmax(0, 1fr); }
}

/* --- Article */

.prose { padding: 32px 16px 48px; }

.prose h2 {
    margin: 2.2rem 0 1.2rem;
    padding-bottom: 0.9rem;
    border-bottom: 1px solid var(--hairline);
    font-size: 24px;
    line-height: 1.25;
    font-weight: 600;
    color: rgba(0, 0, 0, 0.85);
}

.prose p, .prose ul { margin: 0 0 1.1em; }
.prose li { margin-bottom: 0.4em; }

.prose table { border-collapse: collapse; font-size: 14px; margin: 0.4em 0 1.3em; width: 100%; }
.prose th, .prose td { text-align: right; padding: 5px 10px; border-bottom: 1px solid var(--hairline); font-variant-numeric: tabular-nums; }
.prose th:first-child, .prose td:first-child { text-align: left; padding-left: 0; }
.prose th { font-weight: 600; font-size: 12px; color: var(--text-2); }

button.inline {
    display: inline;
    margin: 0 0.15em;
    padding: 0 9px;
    font-size: 14px;
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
    border-radius: 999px;
}

code { font: 0.9em var(--mono); }

a.cite { color: var(--text-2); text-decoration: none; font-size: 0.85em; white-space: nowrap; }
a.cite:hover { color: var(--accent); }

/* --- Appendix */

.appendix {
    border-top: 1px solid var(--hairline);
    padding: 20px 16px 64px;
    color: var(--text-2);
    font-size: 13px;
    line-height: 1.6;
}

.appendix > * { max-width: calc(var(--text-col) - 32px); }

.appendix h3 {
    margin-top: 22px;
    margin-bottom: 8px;
    font-size: 15px;
    font-weight: 600;
    color: rgba(0, 0, 0, 0.65);
}

.appendix a { color: var(--text-2); }

.refs { padding-left: 1.3em; margin-top: 0; }
.refs li { margin-bottom: 0.5em; }
.refs li:target { background: #fff8d6; }

.prose th:nth-child(2), .prose td:nth-child(2) { text-align: left; }
.prose .note { margin-top: -0.6em; font-size: 14px; line-height: 1.5; color: var(--text-2); }
.prose table.text th, .prose table.text td { text-align: left; }