/* The /articles/ pages. Built on article.css and guide.css (the diagrams use the .guide-board styles). */

.art-jump { margin: 8px 0 0; font-size: .9rem; }
.art-jump a { color: var(--accent-text); }

.art-keybox { margin: 22px 0 8px; padding: 16px 20px; border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 12px; background: var(--surface); }
.art-keybox-title { margin: 0 0 8px; font-weight: 800; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-text); }
.art-keybox ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }
.art-note { color: var(--muted); font-size: .9rem; }

.art-board-row { display: flex; flex-wrap: wrap; gap: 20px; align-items: flex-start; }
.art-board-row .art-board { flex: 1 1 260px; max-width: 340px; margin-top: 18px; }
.art-board .guide-board-wrap { width: min(340px, 100%); }

/* Videos. The long one uses the whole column, the short one sits under it, bigger and centered. A short on its own is centered too. */
.art-watch { display: grid; gap: 28px; justify-items: center; margin-top: 18px; }
.art-video { width: 100%; margin: 18px 0 6px; }
.art-watch .art-video { margin: 0; }
.art-video-short { width: min(320px, 100%); margin-inline: auto; }
.art-video-frame { position: relative; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; background: #000; border: 1px solid var(--line); }
.art-video-short .art-video-frame { aspect-ratio: 9 / 16; }
.art-video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.art-video-play { all: unset; box-sizing: border-box; position: absolute; inset: 0; cursor: pointer; display: block; }
.art-video-play[hidden] { display: none; }
.art-video-play img { width: 100%; height: 100%; object-fit: cover; display: block; }
.art-video-play:focus-visible { outline: 3px solid var(--accent-text); outline-offset: -3px; }
.art-video-icon { position: absolute; left: 50%; top: 50%; width: 72px; height: 72px; margin: -36px 0 0 -36px; border-radius: 50%; background: rgba(10, 11, 24, .72); border: 2px solid rgba(255, 255, 255, .85); transition: transform 150ms var(--ease), background 150ms var(--ease); }
.art-video-icon::after { content: ""; position: absolute; left: 29px; top: 21px; border-style: solid; border-width: 14px 0 14px 23px; border-color: transparent transparent transparent #fff; }
.art-video-play:hover .art-video-icon { transform: scale(1.08); background: var(--accent); }
.art-video-cap { margin: 10px 0 0; font-size: .9rem; color: var(--muted); line-height: 1.5; }
.art-video-short .art-video-cap { text-align: center; }
.art-video-cap strong { color: var(--text); }
.art-video-cap a { color: var(--accent-text); white-space: nowrap; }

.art-sources { margin: 0; padding-left: 1.2em; display: grid; gap: 4px; color: var(--muted); font-size: .92rem; }
.art-sources a { color: var(--accent-text); }

/* The hub. One article per row, a small picture on the left. */
.art-list { list-style: none; margin: 0 0 8px; padding: 0; display: grid; gap: 10px; }
.art-row { margin: 0; }
.art-row > a { display: grid; grid-template-columns: 176px minmax(0, 1fr); gap: 16px; align-items: center; padding: 8px 14px 8px 8px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); color: var(--text); text-decoration: none; transition: transform 150ms var(--ease), border-color 150ms var(--ease); }
.art-row > a:hover, .art-row > a:focus-visible { transform: translateY(-1px); border-color: var(--accent); }
.art-row img { width: 176px; aspect-ratio: 16 / 9; object-fit: cover; display: block; border-radius: 9px; background: #000; }
.art-row-body { display: grid; gap: 3px; min-width: 0; }
.art-row-body b { font-size: 1.05rem; }
.art-row-body > span { color: var(--muted); font-size: .92rem; line-height: 1.5; }
.sg-article-section h3 + .art-list { margin-top: 10px; }

@media (max-width: 520px) {
    .art-row > a { grid-template-columns: 104px minmax(0, 1fr); gap: 12px; padding: 8px; }
    .art-row img { width: 104px; }
    .art-board-row { gap: 4px; }
    .art-video-icon { width: 56px; height: 56px; margin: -28px 0 0 -28px; }
    .art-video-icon::after { left: 22px; top: 15px; border-width: 11px 0 11px 18px; }
}
@media (prefers-reduced-motion: reduce) {
    .art-video-icon, .art-row > a { transition: none; }
}

/* Dates, tags and the search, filter and sort bar */
.art-dates { margin: 0; color: var(--muted); font-size: .9rem; }
.art-row-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.art-row-tags > span { padding: 1px 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .74rem; letter-spacing: .04em; text-transform: uppercase; }
.art-row-date { color: var(--muted); font-size: .78rem; }
.art-tools { display: flex; flex-wrap: wrap; align-items: end; gap: 10px 12px; margin: 0 0 var(--space-4, 16px); padding: 12px 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.art-tool { display: grid; gap: 4px; min-width: 0; font-size: .78rem; color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }
.art-tool input, .art-tool select { min-height: 42px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2, var(--surface)); color: var(--text); font: inherit; font-size: .95rem; letter-spacing: 0; text-transform: none; }
.art-tool-search { flex: 1 1 220px; }
.art-tool-search input { width: 100%; box-sizing: border-box; }
.art-tool-reset { min-height: 42px; }
.art-count { margin: 0 0 10px; color: var(--muted); font-size: .92rem; }
.art-none { padding: 18px; border: 1px dashed var(--line); border-radius: 14px; color: var(--muted); text-align: center; }
.art-results[hidden], .art-tools [hidden], #art-groups[hidden] { display: none; }
@media (max-width: 520px) { .art-tool { flex: 1 1 calc(50% - 8px); } .art-tool-search { flex-basis: 100%; } }