/* The daily knowledge feed (Oct 27). Same look as the interests page and the v1 feed's type:
   Roboto headings, Public Sans text, IBM Plex Mono labels. One reading column. */

:root {
  /* Dark, with the v1 Disco feed's dark palette (Oct 28): same ground, card, ink and gold. */
  --ground: #14171c;
  --paper: #1b1f26;
  --ink: #eef0ea;
  --muted: #a7adb8;
  --faint: #8a92a0;
  --line: #2b303a;
  --line-dashed: #3a404b;
  --accent: #e2a63b;
  --accent-ink: #f3c26a;
  --tint: #3a2e14;
  --tint-line: rgba(226,166,59,.4);
  --soft: #22272e;
  --ok: #5fb98a;
  --ok-tint: #183227;
  --bad: #e08064;
  --bad-tint: #3a2016;
  --topic-border: rgba(226,166,59,.4);
  --shadow: 0 1px 2px rgba(0,0,0,.35);
  --head: 'Roboto', 'Google Sans', Arial, sans-serif;
  --sans: 'Public Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--ground); color: var(--ink); font: 400 15px/1.5 var(--sans); -webkit-text-size-adjust: 100%; }
[hidden] { display: none !important; }
button { font: inherit; color: inherit; }
input { font: 400 16px var(--sans); color: var(--ink); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* signed out / loading / empty */
.center { min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 32px 24px; gap: 14px; }
.ball-lg { width: 72px; height: 72px; filter: drop-shadow(0 4px 6px rgba(0,0,0,.5)); }
.ball-sm { width: 24px; height: 24px; }
.spin { animation: spin 2.4s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spin { animation: none; } }
.brand { margin: 0; font: 700 26px var(--head); }
.lede { margin: 0; font-size: 16px; max-width: 420px; }
.hint { font-size: 13px; color: var(--faint); }
.small { font-size: 13px; color: var(--muted); }
.error { margin: 0; color: var(--bad); font-size: 13px; }
.google-btn { min-height: 44px; }
.email-form { display: flex; gap: 8px; width: 100%; max-width: 320px; }
.email-form input { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; background: var(--paper); }
.btn-dark { border: 0; border-radius: 8px; background: var(--accent); color: var(--ground); padding: 10px 16px; font-weight: 700; text-decoration: none; cursor: pointer; }
.btn-quiet { border: 1px solid var(--line); border-radius: 8px; background: var(--paper); padding: 9px 14px; font-weight: 600; cursor: pointer; }
.link { border: 0; background: none; padding: 0; color: var(--accent-ink); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; font-size: 14px; }

/* page */
.page { max-width: 760px; margin: 0 auto; padding-top: max(20px, env(safe-area-inset-top)); padding-bottom: max(32px, env(safe-area-inset-bottom));
  padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); display: flex; flex-direction: column; gap: 26px; }
.top { display: flex; flex-direction: column; gap: 8px; }
.top-row { display: flex; align-items: center; gap: 8px; }
.label { font: 400 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.top-link { margin-left: auto; font: 600 14px var(--sans); color: var(--accent-ink); text-decoration: none; }
.top-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.title { margin: 2px 0 0; font: 700 30px/1.15 var(--head); text-wrap: balance; }
.stats { margin: 0; font: 500 12px var(--mono); color: var(--accent-ink); }
.ed-nav { display: flex; gap: 16px; }
.nav-link { font: 600 14px var(--sans); color: var(--accent-ink); text-decoration: none; }
.nav-link:hover { text-decoration: underline; text-underline-offset: 3px; }

.status { position: fixed; z-index: 10; left: 50%; transform: translateX(-50%); top: max(12px, env(safe-area-inset-top));
  width: max-content; max-width: calc(100% - 32px); margin: 0; padding: 10px 16px; border-radius: 10px;
  background: var(--bad-tint); border: 1px solid var(--bad); box-shadow: 0 6px 18px rgba(0,0,0,.4);
  font-size: 14px; font-weight: 600; color: var(--bad); }
.status:empty { display: none; }

.sections { display: flex; flex-direction: column; gap: 28px; }
.interest { display: flex; flex-direction: column; gap: 12px; }
.interest h2 { margin: 0; font: 700 21px/1.2 var(--head); display: flex; align-items: center; gap: 10px; text-wrap: balance; }
.cards { display: flex; flex-direction: column; gap: 12px; border: 1px solid var(--topic-border); border-radius: 16px; padding: 14px; }
@media (max-width: 480px) { .cards { padding: 10px; border-radius: 14px; } }

.card { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 14px 16px; display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.tag { align-self: flex-start; font: 500 11px var(--mono); letter-spacing: .04em; border-radius: 999px; padding: 2px 9px; border: 1px solid; }
.tag-active { background: var(--tint); border-color: var(--tint-line); color: var(--accent-ink); }
.tag-explore { background: var(--soft); border-color: var(--line-dashed); color: var(--muted); border-style: dashed; }
.tag-mastered { background: var(--ok-tint); border-color: var(--ok); color: var(--ok); }
.email-form input { color: var(--ink); }
.headline { margin: 0; font: 700 18px/1.3 var(--head); text-wrap: balance; }
.headline a { color: var(--ink); text-decoration: none; }
.headline a:hover { color: var(--accent-ink); }
.desc { margin: 0; max-width: 68ch; }
.foot-line { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.meta { margin: 0; font: 400 12px var(--mono); color: var(--accent-ink); }

/* votes: the v1 feed's thumbs and six reasons */
.vote-row { display: flex; gap: 4px; }
.vote-btn { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--accent-ink); cursor: pointer; }
.vote-btn svg { width: 17px; height: 17px; }
.vote-btn:hover { background: var(--soft); }
.vote-btn.up[aria-pressed="true"] { background: var(--ok-tint); border-color: var(--ok); color: var(--ok); }
.vote-btn.down[aria-pressed="true"] { background: var(--bad-tint); border-color: var(--bad); color: var(--bad); }
.reasons { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 6px; }
.reasons-label { font: 600 13px var(--sans); color: var(--muted); margin-right: 2px; }
.reason { font: 500 13px var(--sans); border-radius: 999px; padding: 4px 11px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); cursor: pointer; }
.reasons.up .reason[aria-pressed="true"] { background: var(--ok-tint); border-color: var(--ok); color: var(--ok); }
.reasons.down .reason[aria-pressed="true"] { background: var(--bad-tint); border-color: var(--bad); color: var(--bad); }

/* highlights the article connects to */
.rel summary { cursor: pointer; font: 600 13px var(--sans); color: var(--accent-ink); }
.rel ul { list-style: none; margin: 8px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.rel li { background: var(--soft); border-radius: 8px; padding: 10px 12px; }
.hl { margin: 0; font-size: 14px; }
.hl-src { margin: 4px 0 0; font: 400 11px var(--mono); color: var(--muted); }
.hl-src a { color: inherit; }

.foot { display: flex; flex-direction: column; gap: 12px; border-top: 1px solid var(--line); padding-top: 14px; font-size: 13px; color: var(--muted); }
.foot p { margin: 0; max-width: 68ch; }
.foot-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* From the archive (Oct 30) */
.tags { display: flex; flex-wrap: wrap; gap: 6px; align-self: flex-start; }
.tag-archive { background: var(--paper); border-color: var(--ink); color: var(--ink); }

/* Rolling feed (Nov 1): New, read-today and "Not for me" */
.card-top { display: flex; align-items: center; gap: 8px; }
.card-top .tags { flex: 1; min-width: 0; }
.tag-new { background: var(--accent); border-color: var(--accent); color: #fff; }
.read-mark { display: none; font: 500 11px var(--mono); color: var(--muted); white-space: nowrap; }
.card.is-read { opacity: .62; }
.card.is-read .read-mark { display: inline; }
/* Read articles leave at the next refill anyway, so no ✕ on them (Nov 2, CJ). It comes back if a vote is taken back. */
.card.is-read .nope { display: none; }
.nope { flex: none; width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid transparent; border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; }
.nope svg { width: 15px; height: 15px; }
.nope:hover { border-color: var(--bad); color: var(--bad); background: var(--bad-tint); }
.meta-row { display: inline-flex; align-items: center; gap: 6px; min-width: 0; flex-wrap: wrap; row-gap: 6px; }
.meta-row .meta { white-space: nowrap; }
.mute { flex: none; width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid transparent; border-radius: 7px; background: transparent; color: var(--faint); cursor: pointer; padding: 0; }
.mute svg { width: 14px; height: 14px; }
.mute:hover { border-color: var(--bad); color: var(--bad); background: var(--bad-tint); }
.card.gone { flex-direction: row; flex-wrap: wrap; align-items: baseline; gap: 4px; font-size: 13px; color: var(--muted); box-shadow: none; background: transparent; border-style: dashed; }
.card.is-dismissed > :not(.gone-note) { opacity: .3; pointer-events: none; transition: opacity .25s; }
.card.is-dismissed { opacity: 1; }
.gone-note { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px; font-size: 13px; color: var(--muted); border-top: 1px dashed var(--line-dashed); padding-top: 8px; }
.gone-note .link { font: 600 13px var(--sans); }
.card.gone .link { border: 0; background: none; padding: 0; font: 600 13px var(--sans); color: var(--accent-ink); text-decoration: underline; cursor: pointer; }

/* Page tabs (Nov 2): Disco feed / Interests, pinned to the top like the v1 feed's tab bar. Hidden while signed out. */
.page-tabs { position: sticky; top: 0; z-index: 30; background: var(--ground); border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top); }
.page-tabs-inner { max-width: 760px; margin: 0 auto; display: flex; gap: 24px;
  padding: 0 max(16px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left)); }
/* Nov 4 (CJ): only the tab's words are underlined, not the disco ball; a "Beta" label follows "Disco feed". */
.page-tab { display: inline-flex; align-items: center; gap: 8px; padding: 0 2px; margin-bottom: -1px; align-self: stretch;
  font: 600 16px var(--sans); color: var(--muted); text-decoration: none; }
.page-tab-label { align-self: stretch; display: flex; align-items: center; padding: 13px 0 11px; border-bottom: 3px solid transparent; }
.page-tab:hover { color: var(--ink); }
.page-tab[aria-current="page"] { color: var(--ink); }
.page-tab[aria-current="page"] .page-tab-label { border-bottom-color: var(--accent); }
.page-tab .ball-sm { width: 24px; height: 24px; }
.beta { font: 500 9.5px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink);
  border: 1px solid var(--tint-line, rgba(226,166,59,.4)); border-radius: 4px; padding: 1px 5px; margin-left: -2px; }
body:has(#view-signin:not([hidden])) .page-tabs, body:has(#view-wait:not([hidden])) .page-tabs { display: none; }

/* Sources button (Nov 2; renamed and given a sliders icon Nov 4, CJ): opens the Sources panel (lib/sources.js), like the v1 feed's sources button. */
.stats-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.sources-btn { display: inline-flex; align-items: center; gap: 7px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--paper); color: var(--ink); font: 600 13px var(--sans); padding: 6px 12px; cursor: pointer; }
.sources-btn svg { width: 16px; height: 16px; color: var(--accent-ink); flex-shrink: 0; }
.sources-btn:hover { border-color: var(--accent); }

/* Related discos (Nov 3, like the v1 feed): a "Related discos" chip on the article; tapping it opens them in a
   column to the right of the article on wider screens, or below it on phones. Closed by default. */
.card-main { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.rel-row { display: flex; }
.rel-chip { display: inline-flex; align-items: center; gap: 8px; border: 0; background: var(--tint); color: var(--accent-ink);
  border-radius: 999px; padding: 8px 18px; font: 500 14px var(--mono); cursor: pointer; white-space: nowrap; }
.rel-chip:hover, .rel-chip[aria-expanded="true"] { background: #4a3a17; }
.rel-arrow { font-size: 12px; }
.rel-title { margin: 0; font: 500 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.rel ul { margin-top: 8px; }
@media (min-width: 900px) {
  .page { max-width: 1060px; }
  .page-tabs-inner { max-width: 1060px; }
  .card.rel-open { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, 34%); column-gap: 20px; align-items: start; }
  .card.rel-open .rel { grid-column: 2; grid-row: 1; border-left: 1px solid var(--line); padding-left: 16px; align-self: stretch; }
  .card .gone-note { grid-column: 1 / -1; }
}

/* Images (Nov 3): one museum image per section, floated into the first article like v1; lightbox with details. */
.card-main.has-art { display: flow-root; }
.card-main.has-art > * + * { margin-top: 7px; }
.art { float: left; width: 200px; aspect-ratio: 4 / 3; margin: 2px 16px 6px 0; padding: 0; border: 0; border-radius: 12px;
  overflow: hidden; background: var(--soft); cursor: zoom-in; }
.art img { width: 100%; height: 100%; object-fit: cover; object-position: center 28%; display: block; transition: transform .3s; }
.art:hover img { transform: scale(1.03); }
@media (max-width: 760px) { .art { width: 112px; aspect-ratio: 1; border-radius: 10px; margin-right: 12px; } }
.art-box { border: 0; padding: 0; max-width: min(1100px, calc(100vw - 24px)); max-height: calc(100vh - 24px); background: var(--paper);
  color: var(--ink); border-radius: 14px; overflow: auto; }
.art-box[open] { display: grid; grid-template-columns: minmax(0, 1fr); }
.art-box::backdrop { background: rgb(0 0 0 / .8); }
.art-box img { width: 100%; max-height: 70vh; object-fit: contain; background: #0b0d10; cursor: zoom-out; display: block; }
.art-cap { padding: 14px 18px 18px; display: flex; flex-direction: column; gap: 4px; }
.art-cap p { margin: 0; }
.art-kicker { font: 500 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.art-title { font: 700 18px var(--head); }
.art-by, .art-medium { font-size: 14px; color: var(--muted); }
.art-about { font-size: 15px; margin-top: 6px !important; }
.art-src { font-size: 13px; color: var(--muted); margin-top: 6px !important; }
.art-src a { color: var(--accent-ink); }
.art-close { position: absolute; top: 8px; right: 10px; border: 0; background: rgb(0 0 0 / .5); color: #fff; width: 32px; height: 32px;
  border-radius: 50%; font-size: 20px; line-height: 1; cursor: pointer; }
@media (min-width: 900px) {
  .art-box[open] { grid-template-columns: minmax(0, 1fr) 340px; }
  .art-box img { max-height: calc(100vh - 24px); height: 100%; }
}