/* ============================================================
   GridAxon — Insights (pieces, hub, topic, series, author pages)
   Loaded after styles.css and page.css on /insights/ pages only.
   ============================================================ */

/* ---- Status banner (sample / draft pages) ---- */
.status-banner {
  background: #fff4e5; border-bottom: 1px solid #f3c58a; color: #7a4a0c;
  font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.04em;
  text-align: center; padding: 10px 24px;
}

/* ---- Breadcrumb ---- */
.breadcrumb ol { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; font-size: 0.88rem; color: var(--text-faint); }
.breadcrumb li + li::before { content: "\203A"; margin-right: 6px; }
.breadcrumb a { color: var(--accent-ink); }
.breadcrumb [aria-current] { color: var(--text-dim); }

/* ---- Label chips ---- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; padding: 4px 12px; border-radius: var(--r-pill);
  border: 1px solid var(--line-strong); font-family: var(--font-mono); font-size: 0.74rem;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-dim);
}
a.chip:hover { border-color: var(--accent); color: var(--accent-ink); }
.chip-type { background: var(--accent-soft); border-color: transparent; color: var(--accent-ink); }
.chip-sample { background: #fff4e5; border-color: #f3c58a; color: #7a4a0c; }

/* ---- Piece header ---- */
.piece-head { padding: clamp(40px, 6vw, 72px) 0 clamp(28px, 4vw, 40px); border-bottom: 1px solid var(--line); }
.piece-head .chips { margin-top: 22px; }
.piece-head h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); max-width: 22ch; margin-top: 18px; }
.standfirst { color: var(--text-dim); font-size: clamp(1.1rem, 2vw, 1.3rem); max-width: 60ch; margin-top: 16px; }
.byline { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 24px; font-size: 0.92rem; color: var(--text-dim); }
.byline a { color: var(--text); font-weight: 600; }
.byline a:hover { color: var(--accent-ink); }

/* ---- Reading column ---- */
.piece-body { max-width: 72ch; margin: 0 auto; padding: clamp(32px, 5vw, 56px) 0; }
.piece-body > * + * { margin-top: 1.1em; }
.piece-body h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 2em; }
.piece-body h3 { font-size: 1.25rem; margin-top: 1.6em; }
.piece-body p, .piece-body li { line-height: 1.7; }
.piece-body ul, .piece-body ol { padding-left: 1.4em; }
.piece-body ul { list-style: disc; } /* styles.css resets ul to no markers */
.piece-body a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 2px; }

.in-short { border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--r-box); background: var(--bg-2); padding: 20px 24px; }
.in-short h2 { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-ink); margin: 0 0 8px; }
.in-short p { margin: 0; }

.piece-body figure { margin: 2em 0; }
.piece-body figure img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: var(--r-box); background: var(--surface); }
.piece-body figcaption { color: var(--text-dim); font-size: 0.9rem; margin-top: 10px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-box); }
.table-wrap table { width: 100%; min-width: 600px; border-collapse: collapse; font-size: 0.94rem; }
.table-wrap caption { caption-side: top; text-align: left; padding: 14px 16px 6px; color: var(--text-dim); font-size: 0.88rem; }
.table-wrap th, .table-wrap td { padding: 10px 16px; border-top: 1px solid var(--line); text-align: left; vertical-align: top; }
.table-wrap th { font-family: var(--font-sans); font-weight: 600; background: var(--bg-2); }

.equation { overflow-x: auto; padding: 8px 0; }

.sources ol { padding-left: 1.6em; font-size: 0.92rem; color: var(--text-dim); }
.sources li + li { margin-top: 8px; }

/* ---- Series navigation ---- */
.series-nav { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 18px 0; margin-top: 2.4em; font-size: 0.92rem; }
.series-nav .next { text-align: right; }
.series-nav .all { text-align: center; }
.series-nav a { color: var(--accent-ink); text-decoration: none; }
.series-nav .muted { color: var(--text-faint); }

/* ---- Actions + signup ---- */
.piece-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2em; }
.piece-actions .btn { text-decoration: none; }
.signup { border: 1px solid var(--line); border-radius: var(--r-box); padding: 24px; margin-top: 1.6em; background: var(--surface); }
.signup h2 { font-size: 1.3rem; margin: 0; }
.signup .field-row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 12px; margin-top: 16px; align-items: end; }
.signup label { display: block; font-size: 0.82rem; color: var(--text-dim); margin-bottom: 6px; }
.signup input[type="email"], .signup input[type="text"] { width: 100%; padding: 12px 14px; border: 1px solid var(--line-strong); border-radius: var(--r-int); font: inherit; }
.signup input:focus { outline: none; border-color: var(--accent-deep); box-shadow: 0 0 0 3px var(--accent-soft); }
.signup .consent { color: var(--text-faint); font-size: 0.82rem; margin-top: 12px; }
.signup .consent a { color: var(--accent-ink); }
.form-status { font-size: 0.92rem; margin-top: 10px; padding: 10px 14px; border-radius: var(--r-int); }
.form-status.is-pending { color: var(--text-dim); background: var(--bg-2); }
.form-status.is-success { color: #0f6b3d; background: rgba(28,163,96,0.12); }
.form-status.is-error { color: #a12a1b; background: rgba(214,69,50,0.10); }
.piece-note { color: var(--text-faint); font-size: 0.86rem; font-style: italic; border-top: 1px solid var(--line); padding-top: 18px; margin-top: 2.4em; }

/* ---- Cards (hub, topic, series, author, related) ---- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card { display: flex; flex-direction: column; gap: 12px; border: 1px solid var(--line); border-radius: var(--r-box); padding: 24px; background: var(--surface); transition: border-color 0.3s var(--ease), transform 0.3s var(--ease); }
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { font-size: 1.25rem; line-height: 1.2; }
.card h3 a::after { content: ""; position: absolute; inset: 0; }
.card { position: relative; }
.card .chips { position: relative; z-index: 1; }
.card p { color: var(--text-dim); font-size: 0.95rem; }
.card .meta { margin-top: auto; color: var(--text-faint); font-size: 0.84rem; }
.card[hidden] { display: none; }
.empty-note { color: var(--text-faint); font-style: italic; }

.featured { margin-bottom: 40px; }
.featured .card { padding: clamp(28px, 4vw, 40px); }
.featured .card h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

/* filters: hidden until insights.js marks them usable (every card is in the HTML) */
.filters { display: none; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 28px; }
.filters.is-ready { display: flex; }
.filter-group { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.filter-group span { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); margin-right: 4px; }
.filter-btn { padding: 6px 14px; border-radius: var(--r-pill); border: 1px solid var(--line-strong); font-size: 0.86rem; color: var(--text-dim); background: none; cursor: pointer; }
.filter-btn[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }

.link-list { display: flex; flex-wrap: wrap; gap: 10px; }
.link-list a { padding: 8px 16px; border-radius: var(--r-pill); border: 1px solid var(--line-strong); font-size: 0.9rem; color: var(--text-dim); }
.link-list a:hover { border-color: var(--accent); color: var(--accent-ink); }

/* ---- Series + author pages ---- */
.parts { list-style: none; padding: 0; counter-reset: part; }
.parts li { display: grid; grid-template-columns: 56px 1fr; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.parts li:last-child { border-bottom: 1px solid var(--line); }
.parts .n { font-family: var(--font-mono); color: var(--accent-ink); }
.parts .coming { color: var(--text-faint); }
.author-card { display: grid; grid-template-columns: 120px 1fr; gap: 28px; align-items: start; }
.author-card img { width: 120px; height: 120px; border-radius: var(--r-pill); object-fit: cover; }
.author-card .role { font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent-ink); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 6px; }
.author-card p { color: var(--text-dim); margin-top: 14px; max-width: 62ch; }
.placeholder { border: 1px dashed #f3c58a; background: #fffaf2; color: #7a4a0c; border-radius: var(--r-int); padding: 12px 16px; font-size: 0.92rem; }

@media (max-width: 640px) {
  .signup .field-row { grid-template-columns: 1fr; }
  .series-nav { grid-template-columns: 1fr; text-align: left; }
  .series-nav .next, .series-nav .all { text-align: left; }
  .author-card { grid-template-columns: 1fr; }
}

/* print-only elements stay out of the screen layout */
.print-only { display: none; }