/*
 * Discussions (src/discuss-views.ts): /discuss, threads, the Discussion
 * section on week and guide pages, Knuth's exercise threads, the inbox, the
 * moderation queue and a profile's Discussions block. Hairline lists and
 * quiet cards like /community; every color is a token from site.css, so dark
 * mode follows.
 */

.dx .crumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; font-size: 14px; color: var(--text-dim); }
.dx .crumbs a { color: var(--text-dim); text-decoration: none; }
.dx .crumbs a:hover { color: var(--link); }
.dx-head { padding-bottom: 8px; }
.dx-head .lede { margin-bottom: 20px; }
.dx-head .row { margin-bottom: 8px; }
.dx-p { margin: -4px 0 14px; font-size: 15px; color: var(--text-body); max-width: 40rem; }
.dx-empty { margin: 12px 0; font-size: 15px; color: var(--text-body); }
.dx-dot { display: inline-block; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: var(--primary); vertical-align: 2px; flex-shrink: 0; }
.pill-site { margin-left: 6px; color: var(--link); background: var(--primary-soft); border-color: var(--link-line); }

/* ---- spaces and thread lists ---- */

.dx-spaces { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); }
.dx-space { display: grid; gap: 6px; height: 100%; padding: 16px 18px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; transition: border-color 0.15s; }
.dx-space:hover { border-color: var(--primary); }
.dx-space-title { font-size: 16px; font-weight: 600; color: var(--text); }
.dx-space:hover .dx-space-title { color: var(--link); }
.dx-space-desc { font-size: 14px; line-height: 1.5; color: var(--text-body); }
.dx-space-meta { margin-top: auto; padding-top: 4px; font-size: 13px; color: var(--text-dim); }

.dx-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.dx-row { border-bottom: 1px solid var(--line); }
.dx-row-link { display: flex; align-items: flex-start; gap: 16px; padding: 14px 4px; text-decoration: none; color: inherit; }
.dx-row-link:hover .dx-row-title { color: var(--link); }
.dx-row-main { flex: 1; min-width: 0; display: grid; gap: 4px; }
.dx-row-title { display: block; font-size: 16px; font-weight: 500; line-height: 1.4; color: var(--text); overflow-wrap: anywhere; }
.dx-row.is-new .dx-row-title { font-weight: 600; }
.dx-row.is-hidden { opacity: 0.6; }
.dx-row-ex { font-size: 14px; line-height: 1.5; color: var(--text-body); overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.dx-row-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; font-size: 13px; color: var(--text-dim); }
.dx-row-by { display: inline-flex; align-items: center; gap: 6px; }
.dx-row-by .avatar, .dx-row-by .dx-site-mark { width: 20px; height: 20px; font-size: 11px; }
.dx-row-side { display: grid; justify-items: end; gap: 2px; flex-shrink: 0; text-align: right; }
.dx-row-n { font-size: 14px; font-weight: 500; color: var(--text-body); white-space: nowrap; }

.dx-new { margin-top: 4px; }
.dx-new > summary { display: inline-flex; }
.dx-new[open] > summary { margin-bottom: 16px; }
.dx-new .dx-composer { padding: 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg-soft); }

.dx-cohorts { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); }
.dx-cohorts a { display: grid; gap: 2px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; }
.dx-cohorts a:hover { border-color: var(--primary); }
.dx-cohorts .is-mine a { border-color: var(--primary); background: var(--primary-soft); }
.dx-cohort-name { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 15px; font-weight: 600; color: var(--text); }

/* ---- a thread ---- */

.dx-thread-head { margin-bottom: 20px; }
.dx-thread-head .page-title { margin-bottom: 12px; overflow-wrap: anywhere; }
.dx-chips { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.dx-owner { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.dx-context-link { margin: -8px 0 12px; }
.dx-jump { margin: 0 0 16px; font-size: 14px; }
.dx-jump a { display: inline-flex; align-items: center; gap: 6px; color: var(--ok-fg); font-weight: 500; }
.dx-count { margin: 32px 0 4px; font-size: 16px; font-weight: 600; color: var(--text); }
.dx-more { margin: 0 0 8px; font-size: 14px; }
.dx-more a { display: inline-flex; align-items: center; gap: 6px; }

.dx-hints { display: flex; align-items: flex-start; gap: 10px; margin: 0 0 16px; padding: 12px 14px; border: 1px solid var(--link-line); border-radius: var(--radius); background: var(--primary-soft); color: var(--text); font-size: 14px; line-height: 1.55; }
.dx-hints svg { margin-top: 2px; color: var(--link); }
.dx-hints code { padding: 0 4px; border-radius: 4px; background: var(--bg); font-size: 0.9em; }

/* ---- a post ---- */

.dx-posts { display: grid; }
.dx-post { padding: 18px 0; border-top: 1px solid var(--line); scroll-margin-top: 16px; }
.dx-posts > .dx-post:first-child { border-top: 0; }
.dx-op { padding: 20px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }
.dx-post.is-accepted { margin: 8px 0; padding: 16px 18px; border: 1px solid var(--ok-line); border-radius: 10px; background: var(--ok-bg); }
.dx-post.is-accepted + .dx-post { border-top: 0; }
.dx-post.is-target { animation: dx-flash 1.6s ease-out; }
@keyframes dx-flash { from { box-shadow: 0 0 0 3px var(--primary); } to { box-shadow: 0 0 0 3px transparent; } }
.dx-post.is-held, .dx-post.is-hidden, .dx-post.is-deleted { color: var(--text-dim); }

.dx-post-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.dx-post-head .avatar { width: 36px; height: 36px; }
.dx-reply .dx-post-head .avatar, .dx-reply .dx-site-mark { width: 28px; height: 28px; }
.dx-meta { flex: 1; min-width: 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 10px; }
.dx-name { font-size: 15px; font-weight: 600; color: var(--text); text-decoration: none; overflow-wrap: anywhere; }
a.dx-name:hover { color: var(--link); }
.dx-handle { font-weight: 400; color: var(--text-dim); }
.dx-when { font-size: 13px; color: var(--text-dim); }
.dx-when a { color: inherit; text-decoration: none; }
.dx-when a:hover { text-decoration: underline; }
.dx-accepted { display: inline-flex; align-items: center; gap: 4px; }
.dx-site-mark { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--primary-soft); flex-shrink: 0; }
.dx-site-mark .mark { width: 55%; height: 55%; }
.dx-gone-pic { background: var(--bg-muted); color: var(--text-dim); }

.dx-body { margin-top: 10px; font-size: 16px; line-height: 1.7; color: var(--text-body); overflow-wrap: anywhere; }
.dx-body.dx-body > * + * { margin-top: 12px; }
.dx-body ul, .dx-body ol { margin: 0; padding-left: 22px; display: grid; gap: 4px; }
.dx-body blockquote { margin: 0; padding: 2px 0 2px 14px; border-left: 3px solid var(--line-strong); color: var(--text-dim); }
.dx-body a { color: var(--link); text-decoration: underline; text-decoration-color: var(--link-line); text-underline-offset: 3px; }
.dx-body strong { color: var(--text); font-weight: 600; }
.dx-body :not(pre) > code { padding: 1px 5px; border-radius: 4px; background: var(--bg-muted); color: var(--text); font-size: 0.875em; }
.dx-code { margin: 0; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-soft); color: var(--text); font-size: 14px; line-height: 1.55; white-space: pre; overflow-x: auto; word-break: normal; overflow-wrap: normal; }
.dx-mention { color: var(--link); font-weight: 500; }
.dx-gone { font-style: italic; color: var(--text-dim); }
.dx-flag { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--text-dim); }

/* Spoilers: inline ||text|| as a "Show spoiler" pill until opened; a ```spoiler block folded. */
.spoiler-body { display: none; }
.spoiler.is-open .spoiler-body, .spoiler:focus-within .spoiler-body { display: inline; padding: 0 3px; border-radius: 3px; background: var(--bg-muted); color: var(--text); }
.spoiler.is-open .spoiler-btn { display: none; }
.spoiler-btn { display: inline-flex; align-items: center; min-height: 26px; padding: 0 10px; border: 1px dashed var(--line-strong); border-radius: 999px; background: var(--bg-muted); color: var(--text-body); font: 600 12px/1 var(--font); letter-spacing: 0.02em; cursor: pointer; vertical-align: 1px; }
.spoiler-btn:hover { border-color: var(--primary); color: var(--link); }
.spoiler-block { border: 1px dashed var(--line-strong); border-radius: var(--radius); background: var(--bg-soft); }
.spoiler-block > summary { display: flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 14px; font-size: 14px; font-weight: 600; color: var(--text-body); }
.spoiler-block > summary::before { content: ''; width: 8px; height: 8px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(-45deg); transition: transform 0.15s; }
.spoiler-block[open] > summary::before { transform: rotate(45deg); }
.spoiler-block[open] > summary { border-bottom: 1px dashed var(--line-strong); }
.spoiler-block:not([open]) > summary:hover { color: var(--link); }
.spoiler-inner { padding: 12px 14px; }
.spoiler-inner.spoiler-inner > * + * { margin-top: 12px; }

.dx-post-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; margin-top: 12px; }
.dx-reacts { display: flex; flex-wrap: wrap; gap: 6px; }
.dx-react { display: inline-flex; align-items: center; gap: 4px; min-width: 36px; min-height: 32px; padding: 2px 9px; border: 1px solid var(--line); border-radius: 999px; background: var(--bg); color: var(--text-body); font: 500 13px/1 var(--font); cursor: pointer; opacity: 0.55; transition: opacity 0.15s, border-color 0.15s; }
.dx-react:hover, .dx-react.has-n, .dx-react.is-mine { opacity: 1; }
.dx-react:hover { border-color: var(--primary); }
.dx-react.is-mine { border-color: var(--primary); background: var(--primary-soft); color: var(--link); }
.dx-react-n:empty { display: none; }
.dx-acts { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; }
.dx-act { display: inline-flex; align-items: center; min-height: 32px; font-size: 14px; font-weight: 500; color: var(--text-dim); text-decoration: none; }
.link-btn.dx-act { text-decoration: none; color: var(--text-dim); }
.dx-act:hover, .link-btn.dx-act:hover { color: var(--link); }
.dx-accept { color: var(--ok-fg) !important; }

.dx-replies { margin-left: 18px; padding-left: 16px; border-left: 2px solid var(--line); }
.dx-replies:empty { display: none; }
.dx-replies > .dx-post { padding: 14px 0; }
.dx-replies > .dx-post:first-child { border-top: 0; }
.dx-op > .dx-replies { display: none; }
@media (max-width: 520px) { .dx-replies { margin-left: 4px; padding-left: 12px; } .dx-op { padding: 16px; } }

/* ---- composing ---- */

.dx-composer { display: grid; gap: 10px; margin-top: 20px; }
.dx-composer textarea { min-height: 96px; font-size: 16px; line-height: 1.55; }
.dx-reply-form { margin: 12px 0 4px; }
.dx-edit-form { margin-top: 10px; }
.dx-compose-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px; }
.dx-help { font-family: var(--mono); font-size: 12px; }
.dx-compose-btns { display: flex; gap: 8px; margin-left: auto; }
.dx-preview { min-height: 96px; margin: 0; padding: 10px 12px; border: 1px dashed var(--line-strong); border-radius: var(--radius); }
.dx-closed { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin-top: 20px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-soft); color: var(--text-body); font-size: 15px; }
.dx-closed-note { border-color: var(--warn-line); background: var(--warn-bg); color: var(--text); }

/* ---- on week and guide pages ---- */

.dx-context { margin-top: 48px; padding-top: 8px; border-top: 1px solid var(--line); scroll-margin-top: 16px; }
.dx-context-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; }
.dx-context-head .section-title { margin: 32px 0 6px; }
.dx-context-head a { display: inline-flex; align-items: center; gap: 4px; margin-left: auto; }
.dx-lede { margin: 0 0 8px; font-size: 15px; line-height: 1.6; color: var(--text-body); max-width: 42rem; }

.dx-exercises { margin-top: 36px; }
.dx-ex-list { list-style: none; margin: 12px 0 0; padding: 0; border: 1px solid var(--line); border-radius: 10px; }
.dx-ex-list > li + li { border-top: 1px solid var(--line); }
.dx-ex { scroll-margin-top: 16px; }
.dx-ex > summary { display: flex; align-items: center; gap: 10px; min-height: 52px; padding: 8px 16px; }
.dx-ex > summary:hover .dx-ex-name { color: var(--link); }
.dx-ex-name { font-size: 15px; font-weight: 600; color: var(--text); }
.dx-ex-n { margin-left: auto; font-size: 13px; color: var(--text-dim); white-space: nowrap; }
.dx-ex-n.has-n { color: var(--link); font-weight: 500; }
.dx-ex .chev { color: var(--text-dim); transition: transform 0.15s; }
.dx-ex[open] .chev { transform: rotate(180deg); }
.dx-ex[open] > summary { border-bottom: 1px solid var(--line); }
.dx-ex-body { padding: 16px; }
.dx-ex-body .dx-composer { margin-top: 12px; }
.dx-ex.is-target > summary { background: var(--primary-soft); }

.pick-disc { margin: 6px 0 0; font-size: 14px; }
.pick-disc a { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; }
.xnum a { color: inherit; text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
.xnum a:hover { color: var(--link); text-decoration-color: var(--link); }
.xdisc-n { display: inline-grid; place-items: center; min-width: 18px; height: 18px; margin-left: 4px; padding: 0 5px; border-radius: 999px; background: var(--primary-soft); color: var(--link); font-size: 11px; font-weight: 600; vertical-align: 1px; }

/* ---- inbox ---- */

.dx-inbox { list-style: none; margin: 20px 0 0; padding: 0; border-top: 1px solid var(--line); }
.dx-inbox li { border-bottom: 1px solid var(--line); }
.dx-inbox a { display: grid; gap: 4px; padding: 14px 4px; text-decoration: none; color: var(--text-body); }
.dx-inbox a:hover .dx-inbox-title { color: var(--link); }
.dx-inbox-head { font-size: 15px; color: var(--text-body); }
.dx-inbox-head strong { color: var(--text); font-weight: 600; }
.dx-inbox-title { color: var(--text); font-weight: 500; }
.dx-inbox-ex { font-size: 14px; color: var(--text-dim); }
.dx-inbox .is-unread { background: var(--primary-soft); }
.dx-inbox .is-unread a { padding-left: 12px; padding-right: 12px; }

/* ---- profile ---- */

.dx-pf-stats { grid-template-columns: repeat(2, minmax(0, 12rem)); }
.dx-pf-list { list-style: none; margin: 20px 0 0; padding: 0; border-top: 1px solid var(--line); }
.dx-pf-list li { border-bottom: 1px solid var(--line); }
.dx-pf-list a { display: grid; gap: 4px; padding: 14px 0; text-decoration: none; }
.dx-pf-title { font-size: 15px; font-weight: 500; color: var(--text); }
.dx-pf-list a:hover .dx-pf-title { color: var(--link); }
.dx-pf-ex { font-size: 14px; line-height: 1.5; color: var(--text-body); }

/* ---- the report dialog ---- */

.dx-dialog { width: min(480px, calc(100vw - 24px)); }
.dx-dialog .stack { gap: 14px; }
.dx-reasons { display: grid; gap: 8px; }
.dx-dialog .rt-set { border: 0; margin: 0; padding: 0; }
.dx-dialog .rt-set legend { margin-bottom: 8px; padding: 0; font-size: 14px; font-weight: 600; }

/* ---- /admin/moderation ---- */

.dx-mod-rule { margin-top: 12px; }
.dx-mod-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.dx-mod-item { padding: 16px 18px; border: 1px solid var(--line); border-radius: 10px; }
.dx-mod-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; font-size: 14px; }
.dx-mod-body { max-height: 18rem; overflow: auto; padding: 10px 12px; border-radius: var(--radius); background: var(--bg-soft); font-size: 15px; }
.dx-mod-reports { margin: 12px 0 0; padding-left: 20px; display: grid; gap: 4px; font-size: 14px; color: var(--text-body); }
.dx-mod-acts { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.dx-mod-group { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.dx-mod-group > .dim { margin-right: 4px; text-transform: uppercase; letter-spacing: 0.08em; font-size: 11px; font-weight: 600; }