/* Nengo Zoo — static site styles */

:root {
  --fg:          #1a1a1a;
  --fg-muted:    #555;
  --fg-faint:    #888;
  --bg:          #fafaf8;
  --bg-card:     #ffffff;
  --bg-code:     #f4f3ee;
  --border:      #e2e0db;
  --accent:      #c64e1a;        /* Nengo-adjacent rust/orange */
  --accent-soft: #fdebe1;
  --type-component: #2c7a7b;     /* teal */
  --type-network:   #6b4e9b;     /* purple */
  --type-model:     #c64e1a;     /* rust */
  --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.04);
  --radius: 8px;
  --maxw: 1100px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre, kbd, samp {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
}
code { background: var(--bg-code); padding: 0.1em 0.3em; border-radius: 4px; }
pre {
  background: var(--bg-code);
  padding: 1em;
  border-radius: var(--radius);
  overflow-x: auto;
  border: 1px solid var(--border);
}
pre code { background: none; padding: 0; }

/* Codehilite wrapper from python-markdown */
.codehilite {
  background: var(--bg-code);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow-x: auto;
  margin: 1em 0;
}
.codehilite pre {
  background: transparent;
  border: 0;
  margin: 0;
  padding: 1em;
}

/* ---------- Site header ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.site-header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.site-title {
  display: inline-flex;
  align-items: center;
  margin: 0;
  text-decoration: none;
  line-height: 0;          /* prevent inline-image baseline whitespace */
}
.site-title:hover { text-decoration: none; }

.site-logo {
  height: 42px;
  width: auto;
  display: block;
  flex-shrink: 0;
}
.site-tagline {
  color: var(--fg-muted);
  font-size: 0.92rem;
  margin: 0;
}

/* Header nav — primary "Submit a model" CTA, visible on every page. */
.site-nav {
  margin-left: auto;
}
.site-nav-cta {
  display: inline-block;
  padding: 0.5rem 0.95rem;
  background: var(--accent);
  color: white;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.12s ease, transform 0.08s ease;
}
.site-nav-cta:hover {
  background: #a13e10;
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
}

/* Prose styling — used by the rendered contributing page. */
.prose {
  max-width: 760px;
}
.prose :is(h1, h2, h3, h4) {
  margin-top: 1.8em;
  margin-bottom: 0.45em;
  font-weight: 600;
  letter-spacing: -0.005em;
}
.prose h1 { font-size: 1.9rem; margin-top: 0; }
.prose h2 { font-size: 1.4rem; }
.prose h3 { font-size: 1.1rem; }
.prose p, .prose ul, .prose ol { margin: 0.7em 0; }
.prose ul, .prose ol { padding-left: 1.5em; }
.prose li { margin: 0.2em 0; }
.prose table {
  border-collapse: collapse;
  margin: 1em 0;
}
.prose th, .prose td {
  padding: 0.4em 0.8em;
  border: 1px solid var(--border);
  text-align: left;
}
.prose th { background: var(--bg-code); }
.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.4em 0;
}

/* ---------- Page container ---------- */

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ---------- Filter bar (index) ---------- */

.filter-bar {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1rem;
  padding: 0.7rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

#filter-search {
  flex: 1 1 220px;
  min-width: 200px;
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--fg);
}
#filter-search:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.filter-chips {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}
.filter-chip {
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--fg-muted);
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.1s ease;
}
.filter-chip:hover { color: var(--fg); border-color: var(--fg-faint); }
.filter-chip.is-active {
  background: var(--fg);
  color: var(--bg-card);
  border-color: var(--fg);
}

.filter-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.86rem;
  color: var(--fg-muted);
  cursor: pointer;
  user-select: none;
}
.filter-toggle input { accent-color: var(--accent); }

.filter-sort {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.86rem;
  color: var(--fg-muted);
}
.filter-sort select {
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.85rem;
}
.filter-sort select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.filter-status {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: var(--fg-faint);
}
#filter-clear {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  padding: 0.15rem 0.35rem;
}
#filter-clear:hover { text-decoration: underline; }

#empty-state {
  margin-top: 1.5rem;
  text-align: center;
  color: var(--fg-faint);
  padding: 2rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

/* ---------- Card grid (index) ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem 1rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  /* anchor reset — entire card is a single <a> */
  color: inherit;
  text-decoration: none;
  transition: transform 0.08s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}
.card:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.06);
  border-color: var(--accent);
  text-decoration: none;
}
.card:hover .card-name { color: var(--accent); }
.card-name { transition: color 0.12s ease; }
.card[hidden] { display: none; }
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
}
.card-name {
  font-size: 1.08rem;
  font-weight: 600;
  margin: 0;
  color: var(--fg);
}
.card-desc {
  color: var(--fg-muted);
  font-size: 0.94rem;
  margin: 0.2rem 0 0.9rem;
  flex-grow: 1;
}
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

/* ---------- Badges ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.22rem 0.6rem;          /* rem, not em — keeps height uniform across font sizes */
  font-size: 0.74rem;
  font-weight: 500;
  border-radius: 999px;
  letter-spacing: 0.01em;
  white-space: nowrap;
  line-height: 1.1;
}
.badge-type {
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.badge-type-component { background: var(--type-component); color: white; }
.badge-type-network   { background: var(--type-network);   color: white; }
.badge-type-model     { background: var(--type-model);     color: white; }

.badge-tag {
  background: var(--bg-code);
  color: var(--fg-muted);
  font-size: 0.72rem;
}

.badge-complexity {
  background: transparent;
  color: var(--fg-faint);
  border: 1px solid var(--border);
  font-size: 0.72rem;
}
.badge-complexity.is-active {
  background: var(--fg);
  color: var(--bg-card);
  border-color: var(--fg);
}

.badge-gui {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.72rem;
}

.badge-ci-structural {
  background: #fff4d4;
  color: #7a5b00;
  font-weight: 600;
  font-size: 0.72rem;
}

/* Clickable pills (both index <span> + detail-page <a>). */
[data-filter-action],
a.badge {
  cursor: pointer;
  text-decoration: none;
  transition: filter 0.1s ease, box-shadow 0.1s ease;
}
[data-filter-action]:hover,
[data-filter-action]:focus-visible,
a.badge:hover,
a.badge:focus-visible {
  filter: brightness(0.92);
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
}
a.badge:hover { text-decoration: none; }

/* ---------- Detail page ---------- */

.page-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.crumbs { font-size: 0.85rem; color: var(--fg-faint); margin-bottom: 0.7rem; }
.crumbs a { color: var(--fg-muted); }
.page-title {
  font-size: 1.9rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}
.page-subtitle {
  color: var(--fg-muted);
  font-size: 1rem;
  margin: 0 0 0.9rem;
}
.page-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 2.5rem;
  align-items: start;
}
@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
}

.content :is(h1, h2, h3, h4) {
  margin-top: 1.8em;
  margin-bottom: 0.5em;
  font-weight: 600;
  letter-spacing: -0.005em;
}
.content h1 { font-size: 1.5rem; }
.content h2 { font-size: 1.25rem; }
.content h3 { font-size: 1.05rem; }
.content p { margin: 0.6em 0; }
.content ul, .content ol { margin: 0.5em 0; padding-left: 1.5em; }
.content img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 1em 0; }
.content table { border-collapse: collapse; margin: 1em 0; }
.content th, .content td {
  padding: 0.4em 0.8em;
  border: 1px solid var(--border);
  text-align: left;
}
.content th { background: var(--bg-code); }

/* ---------- Sidebar (detail page) ---------- */

.sidebar {
  /* Flows with the page (no sticky/independent scroll). A previous sticky
   * variant clipped its own bottom on viewports shorter than the sidebar,
   * with no way to scroll to the cut-off content. Plain flow scrolls with
   * the rest of the page, so everything is always reachable. */
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  font-size: 0.92rem;
}

/* Download button — top of sidebar */
.download-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--accent);
  color: white;
  padding: 0.7rem 1rem;
  border-radius: var(--radius);
  text-decoration: none;
  margin-bottom: 1.25rem;
  transition: background 0.12s ease, transform 0.08s ease;
}
.download-btn:hover {
  background: #a13e10;
  transform: translateY(-1px);
  text-decoration: none;
}
.download-btn-label {
  font-weight: 600;
  font-size: 0.95rem;
}
.download-btn-meta {
  font-size: 0.74rem;
  opacity: 0.85;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  margin-top: 0.15rem;
}
.sidebar h3 {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-faint);
  margin: 0 0 0.4rem;
}
.sidebar h3:not(:first-child) { margin-top: 1.1rem; }
.sidebar dl {
  margin: 0;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.3em 0.7em;
  font-size: 0.88rem;
}
.sidebar dt { color: var(--fg-faint); }
.sidebar dd { margin: 0; }
.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

/* ---------- Tested-on block (sidebar) ---------- */

.tested-on {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.tested-row {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}
.tested-mark {
  font-weight: 700;
  width: 1em;
  text-align: center;
}
.tested-pass .tested-mark { color: #2c7a2c; }
.tested-fail .tested-mark { color: #b3261e; }
.tested-fail .tested-label { color: var(--fg-faint); text-decoration: line-through; }

.tested-on-meta {
  font-size: 0.74rem;
  color: var(--fg-faint);
  margin: 0.4rem 0 0;
  font-style: italic;
}

/* Sidebar variant of the CI-structural badge (when no matrix exists). */
.ci-structural-note { margin: 0.1rem 0 0; }

/* ---------- Cite-this-submission (Zenodo DOIs) ---------- */
.cite-doi {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  margin: 0.35rem 0;
  font-size: 0.8rem;
}
.cite-label { color: var(--fg-faint); }
.cite-doi code {
  font-size: 0.78rem;
  word-break: break-all;   /* DOIs are long; let them wrap in the narrow sidebar */
}

/* ---------- Versions dropdown (sidebar) ---------- */
.version-select {
  width: 100%;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.85rem;
}
.version-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.version-links {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin: 0.45rem 0 0;
  font-size: 0.8rem;
}
#version-doi { word-break: break-all; }

/* ---------- Community block (sidebar) ----------
 * Visual weight is deliberately quiet — this is a signal, not a CTA. We
 * still want the user to be able to click through to discuss, so the
 * whole block is a hover-able link.
 */
.discuss-btn {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  text-decoration: none;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.discuss-btn:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
}
.discuss-counts {
  display: flex;
  gap: 0.9rem;
  font-size: 0.92rem;
  font-weight: 600;
}
.discuss-counts span { color: var(--fg); }
.discuss-cta {
  font-size: 0.78rem;
  color: var(--accent);
}

/* ---------- Card community badge (index) ----------
 * Subtle counts tucked into card-meta, pushed to the right edge. Clickable:
 * it diverts (via JS) to the discussion thread rather than the card's own
 * detail-page link, so it gets a hover affordance to signal that.
 */
.card-community {
  display: inline-flex;
  gap: 0.5rem;
  margin-left: auto;          /* push to right edge of card-meta */
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  font-size: 0.74rem;
  color: var(--fg-faint);
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.1s ease, color 0.1s ease;
}
.card-community:hover,
.card-community:focus-visible {
  background: var(--accent-soft);
  color: var(--accent);
  outline: none;
}

/* ---------- Figures gallery ---------- */

.figures {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.figures-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}
.figures-grid figure { margin: 0; }
.figures-grid img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.figures-grid figcaption {
  font-size: 0.82rem;
  color: var(--fg-faint);
  margin-top: 0.3rem;
  text-align: center;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--fg-faint);
}