/* SynRXN documentation UI polish for PyData Sphinx Theme.
   Goals: compact sidebar, wider article area, consistent icon language,
   cleaner cards, better tables, and responsive spacing. */

:root {
  --synrxn-navy: #17324d;
  --synrxn-blue: #2f77a8;
  --synrxn-cyan: #56b6d8;
  --synrxn-sky: #dff1ff;
  --synrxn-ice: #f7fbfe;
  --synrxn-border: #d8e5ef;
  --synrxn-text: #243746;
  --synrxn-muted: #536575;
  --synrxn-shadow: rgba(23, 50, 77, 0.10);
  --synrxn-shadow-strong: rgba(23, 50, 77, 0.18);
  --pst-color-primary: #2f77a8;
  --pst-color-secondary: #17324d;
  --pst-color-link: #256e9f;
  --pst-color-link-hover: #17324d;
  --pst-sidebar-primary: 14rem;
  --pst-sidebar-secondary: 13rem;
}

html[data-theme="dark"] {
  --synrxn-navy: #9fd6ff;
  --synrxn-blue: #8ac8f1;
  --synrxn-cyan: #6fc7e7;
  --synrxn-sky: #172331;
  --synrxn-ice: #101b27;
  --synrxn-border: #30485c;
  --synrxn-text: #eaf4fb;
  --synrxn-muted: #b5cad8;
  --synrxn-shadow: rgba(0, 0, 0, 0.24);
  --synrxn-shadow-strong: rgba(0, 0, 0, 0.34);
}

/* -------- Page layout: less left rail, more central reading width -------- */
.bd-page-width {
  max-width: 1500px;
}

.bd-main .bd-content .bd-article-container {
  max-width: 1120px;
}

@media (min-width: 992px) {
  .bd-sidebar-primary {
    flex: 0 0 14rem;
    max-width: 14rem;
    min-width: 14rem;
    width: 14rem;
  }

  .bd-sidebar-secondary {
    flex: 0 0 13rem;
    max-width: 13rem;
    min-width: 13rem;
    width: 13rem;
  }

  .bd-main .bd-content .bd-article {
    padding-left: 1.35rem;
    padding-right: 1.35rem;
  }
}

@media (min-width: 1400px) {
  .bd-main .bd-content .bd-article-container {
    max-width: 1180px;
  }
}

.bd-sidebar-primary {
  border-right: 1px solid var(--synrxn-border);
}

.bd-sidebar-primary .sidebar-header-items,
.bd-sidebar-primary .sidebar-primary-items__end {
  margin-top: 0.5rem;
}

.bd-sidebar-primary .caption,
.bd-sidebar-primary .sidebar-caption {
  color: var(--synrxn-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.bd-sidebar-primary a,
.bd-sidebar-primary .reference {
  border-radius: 10px;
  font-size: 0.92rem;
}

.bd-sidebar-primary .current > a,
.bd-sidebar-primary a.current,
.bd-sidebar-primary .toctree-l1.current > a {
  background: var(--synrxn-sky);
  color: var(--synrxn-navy) !important;
  font-weight: 800;
}

.bd-header .navbar-brand img {
  max-height: 42px;
}

.bd-header .navbar-nav > li > a.nav-link {
  font-weight: 700;
}

.bd-header .navbar-nav > li > a.nav-link:hover {
  color: var(--synrxn-blue);
}

/* -------- Typography -------- */
.rst-content h1,
.bd-article h1 {
  color: var(--synrxn-navy);
  font-weight: 850;
  letter-spacing: -0.032em;
}

.bd-article h2 {
  border-bottom: 1px solid var(--synrxn-border);
  color: var(--synrxn-navy);
  font-weight: 800;
  margin-top: 2.1rem;
  padding-bottom: 0.45rem;
}

.bd-article h3,
.bd-article h4 {
  color: var(--synrxn-text);
  font-weight: 750;
}

.bd-article p,
.bd-article li {
  line-height: 1.68;
}

/* -------- Hero -------- */
.synrxn-hero {
  background:
    radial-gradient(circle at 7% 18%, rgba(223, 241, 255, 0.38), transparent 24rem),
    radial-gradient(circle at 94% 8%, rgba(86, 182, 216, 0.42), transparent 18rem),
    linear-gradient(135deg, #17324d 0%, #245e84 54%, #2f77a8 100%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 24px;
  box-shadow: 0 18px 48px var(--synrxn-shadow-strong);
  color: #fff;
  margin: 0.85rem 0 1.65rem;
  overflow: hidden;
  padding: clamp(1.45rem, 3vw, 2.65rem);
  position: relative;
}

.synrxn-hero::before {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  content: "";
  height: 10rem;
  position: absolute;
  right: -2.5rem;
  top: -3rem;
  width: 10rem;
}

.synrxn-hero::after {
  background: linear-gradient(90deg, rgba(255,255,255,0.20), rgba(255,255,255,0));
  content: "";
  inset: auto 0 0 0;
  height: 5px;
  position: absolute;
}

.synrxn-hero h1,
.synrxn-hero p,
.synrxn-hero strong {
  color: #fff;
  position: relative;
  z-index: 1;
}

.synrxn-hero h1 {
  font-size: clamp(2rem, 3.9vw, 3.55rem);
  line-height: 1.04;
  margin: 0 0 0.8rem;
  max-width: 980px;
}

.synrxn-hero p {
  font-size: clamp(1rem, 1.45vw, 1.18rem);
  line-height: 1.62;
  margin: 0 0 1.1rem;
  max-width: 900px;
}

.synrxn-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.2rem;
  position: relative;
  z-index: 1;
}

.synrxn-button {
  align-items: center;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  color: #17324d !important;
  display: inline-flex;
  font-weight: 800;
  gap: 0.48rem;
  padding: 0.7rem 1.05rem;
  text-decoration: none !important;
  transition: box-shadow 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

.synrxn-button.secondary {
  background: rgba(255, 255, 255, 0.13);
  color: #fff !important;
}

.synrxn-button:hover {
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.14);
  transform: translateY(-1px);
}

.synrxn-button .fa-solid,
.synrxn-button .fa-brands {
  font-size: 0.95rem;
}

/* -------- Badges -------- */
.synrxn-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0.95rem 0 1.45rem;
}

.synrxn-badge {
  align-items: center;
  background: var(--synrxn-ice);
  border: 1px solid var(--synrxn-border);
  border-radius: 999px;
  color: var(--synrxn-navy) !important;
  display: inline-flex;
  font-size: 0.86rem;
  font-weight: 800;
  gap: 0.42rem;
  padding: 0.42rem 0.78rem;
  text-decoration: none !important;
}

.synrxn-badge:hover {
  border-color: var(--synrxn-blue);
  box-shadow: 0 4px 12px var(--synrxn-shadow);
}

/* -------- Cards and icon blocks -------- */
.synrxn-card-grid,
.synrxn-icon-grid,
.synrxn-collection-grid {
  display: grid;
  gap: 0.95rem;
  margin: 1.15rem 0 1.8rem;
}

.synrxn-card-grid {
  grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
}

.synrxn-icon-grid {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.synrxn-collection-grid {
  grid-template-columns: repeat(auto-fit, minmax(275px, 1fr));
}

.synrxn-card,
.synrxn-icon-card,
.synrxn-collection-card {
  background: linear-gradient(180deg, var(--pst-color-background), var(--synrxn-ice));
  border: 1px solid var(--synrxn-border);
  border-radius: 18px;
  box-shadow: 0 8px 24px var(--synrxn-shadow);
  color: var(--synrxn-text) !important;
  display: block;
  min-height: 120px;
  padding: 1rem 1.08rem;
  position: relative;
  text-decoration: none !important;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.synrxn-card:hover,
.synrxn-icon-card:hover,
.synrxn-collection-card:hover {
  border-color: var(--synrxn-blue);
  box-shadow: 0 12px 32px var(--synrxn-shadow-strong);
  transform: translateY(-2px);
}

.synrxn-card strong,
.synrxn-icon-card strong,
.synrxn-collection-card strong {
  color: var(--synrxn-navy);
  display: block;
  font-size: 1.04rem;
  line-height: 1.3;
  margin-bottom: 0.42rem;
}

.synrxn-card span,
.synrxn-icon-card p,
.synrxn-collection-card span,
.synrxn-collection-card p {
  color: var(--synrxn-muted);
  display: block;
  line-height: 1.55;
  margin: 0;
}

.synrxn-card strong {
  align-items: center;
  display: flex;
  gap: 0.55rem;
}

.synrxn-card strong .fa-solid,
.synrxn-card strong .fa-brands,
.synrxn-card strong .fa-regular,
.synrxn-collection-card .tagline .fa-solid,
.synrxn-collection-card .tagline .fa-brands {
  color: var(--synrxn-blue);
}

.synrxn-card::after,
.synrxn-collection-card::after {
  color: var(--synrxn-blue);
  content: "›";
  font-family: inherit;
  font-size: 1.35rem;
  font-weight: 900;
  opacity: 0.65;
  position: absolute;
  right: 1rem;
  top: 1rem;
}

.synrxn-icon {
  align-items: center;
  background: linear-gradient(135deg, var(--synrxn-navy), var(--synrxn-blue));
  border-radius: 14px;
  color: #fff;
  display: inline-flex;
  font-size: 1rem;
  font-weight: 900;
  height: 2.35rem;
  justify-content: center;
  margin-bottom: 0.75rem;
  min-width: 2.35rem;
  padding: 0 0.55rem;
}

.synrxn-icon .fa-solid,
.synrxn-icon .fa-brands,
.synrxn-icon .fa-regular {
  font-size: 1rem;
}

.synrxn-collection-card .tagline {
  align-items: center;
  color: var(--synrxn-blue);
  display: flex;
  font-size: 0.81rem;
  font-weight: 850;
  gap: 0.42rem;
  letter-spacing: 0.055em;
  margin-bottom: 0.55rem;
  text-transform: uppercase;
}

/* -------- Steps and callouts -------- */
.synrxn-steps {
  counter-reset: synrxn-step;
  display: grid;
  gap: 0.85rem;
  margin: 1rem 0 1.65rem;
}

.synrxn-step {
  background: var(--synrxn-ice);
  border: 1px solid var(--synrxn-border);
  border-radius: 16px;
  padding: 1rem 1rem 1rem 4.55rem;
  position: relative;
}

.synrxn-step::before {
  display: none;
}

.synrxn-step-icon {
  align-items: center;
  background: linear-gradient(135deg, var(--synrxn-navy), var(--synrxn-blue));
  border-radius: 14px;
  color: #fff;
  display: inline-flex;
  font-size: 1rem;
  height: 2.6rem;
  justify-content: center;
  left: 1rem;
  position: absolute;
  top: 1rem;
  width: 2.6rem;
}

.synrxn-step strong {
  color: var(--synrxn-navy);
  display: block;
  margin-bottom: 0.28rem;
}

.synrxn-callout {
  background: var(--synrxn-ice);
  border: 1px solid var(--synrxn-border);
  border-left: 5px solid var(--synrxn-blue);
  border-radius: 14px;
  margin: 1rem 0 1.45rem;
  padding: 1rem 1.15rem;
}

.synrxn-callout p:last-child {
  margin-bottom: 0;
}

.synrxn-callout strong::before {
  color: var(--synrxn-blue);
  content: "\f0eb";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  margin-right: 0.4rem;
}

/* Make native Sphinx admonitions blend with the custom visual language. */
.admonition,
div.admonition {
  border-radius: 14px;
  box-shadow: 0 6px 18px var(--synrxn-shadow);
}

.admonition-title::before {
  opacity: 0.85;
}

/* -------- Figures, code, and tables -------- */
.synrxn-hero-figure img,
.synrxn-figure img {
  background: var(--pst-color-background);
  border: 1px solid var(--synrxn-border);
  border-radius: 18px;
  box-shadow: 0 14px 36px var(--synrxn-shadow-strong);
  padding: 0.65rem;
}

.highlight,
div[class*="highlight-"] {
  border-radius: 14px;
}

.highlight pre {
  padding: 1rem 1.1rem;
}

.synrxn-table td,
.synrxn-table th {
  vertical-align: top;
}

.synrxn-table table.docutils {
  border: 1px solid var(--synrxn-border);
  border-radius: 14px;
  box-shadow: 0 6px 18px var(--synrxn-shadow);
  overflow: hidden;
}

.synrxn-table table.docutils thead th {
  background: var(--synrxn-navy);
  color: #ffffff;
}

.synrxn-table table.docutils tbody tr:nth-child(even) {
  background: var(--synrxn-ice);
}

.synrxn-table table.docutils tbody tr:hover {
  background: color-mix(in srgb, var(--synrxn-sky) 55%, transparent);
}

.rst-content blockquote,
.bd-article blockquote {
  border-left: 4px solid var(--synrxn-blue);
  color: var(--synrxn-muted);
  margin-left: 0;
  padding-left: 1rem;
}

.prev-next-area a {
  border-radius: 14px;
}

/* -------- Mobile polish -------- */
@media (max-width: 767px) {
  .synrxn-hero {
    border-radius: 18px;
  }

  .synrxn-card-grid,
  .synrxn-icon-grid,
  .synrxn-collection-grid {
    grid-template-columns: 1fr;
  }

  .synrxn-card,
  .synrxn-icon-card,
  .synrxn-collection-card {
    min-height: auto;
  }
}



/* -------- Citation, changelog, paper, and issue pages -------- */
.synrxn-callout-card,
.synrxn-paper-card {
  align-items: flex-start;
  background: linear-gradient(135deg, var(--synrxn-ice), #fff);
  border: 1px solid var(--synrxn-border);
  border-radius: 20px;
  box-shadow: 0 12px 28px var(--synrxn-shadow);
  display: flex;
  gap: 1rem;
  margin: 1rem 0 1.4rem;
  padding: 1.15rem;
}

html[data-theme="dark"] .synrxn-callout-card,
html[data-theme="dark"] .synrxn-paper-card {
  background: linear-gradient(135deg, var(--synrxn-ice), #132232);
}

.synrxn-callout-card p,
.synrxn-paper-card p {
  margin-bottom: 0;
}

.synrxn-callout-icon,
.synrxn-paper-icon {
  align-items: center;
  background: var(--synrxn-sky);
  border-radius: 16px;
  color: var(--synrxn-navy);
  display: inline-flex;
  flex: 0 0 3rem;
  font-size: 1.25rem;
  height: 3rem;
  justify-content: center;
  width: 3rem;
}

.synrxn-citation-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 1rem 0 1.4rem;
}

.synrxn-citation-card {
  background: var(--synrxn-ice);
  border: 1px solid var(--synrxn-border);
  border-radius: 18px;
  box-shadow: 0 10px 24px var(--synrxn-shadow);
  padding: 1rem;
}

.synrxn-citation-card span {
  align-items: center;
  background: var(--synrxn-sky);
  border-radius: 14px;
  color: var(--synrxn-navy);
  display: inline-flex;
  height: 2.65rem;
  justify-content: center;
  margin-bottom: 0.75rem;
  width: 2.65rem;
}

.synrxn-citation-card strong {
  color: var(--synrxn-navy);
  display: block;
  font-size: 1.02rem;
  margin-bottom: 0.3rem;
}

.synrxn-citation-card p {
  color: var(--synrxn-muted);
  margin: 0;
}

.synrxn-citation-strip {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 1rem 0 1.35rem;
}

.synrxn-citation-strip a {
  align-items: center;
  background: var(--synrxn-ice);
  border: 1px solid var(--synrxn-border);
  border-radius: 18px;
  box-shadow: 0 10px 24px var(--synrxn-shadow);
  color: var(--synrxn-text) !important;
  display: grid;
  gap: 0.2rem 0.8rem;
  grid-template-columns: 2.4rem 1fr;
  padding: 0.95rem;
  text-decoration: none !important;
}

.synrxn-citation-strip i {
  align-items: center;
  background: var(--synrxn-sky);
  border-radius: 14px;
  color: var(--synrxn-navy);
  display: inline-flex;
  grid-row: span 2;
  height: 2.4rem;
  justify-content: center;
  width: 2.4rem;
}

.synrxn-citation-strip span {
  color: var(--synrxn-muted);
  font-size: 0.92rem;
}

.synrxn-button.compact {
  font-size: 0.92rem;
  padding: 0.52rem 0.86rem;
}

.synrxn-button.secondary-light {
  background: var(--synrxn-sky);
  border-color: var(--synrxn-border);
  color: var(--synrxn-navy) !important;
}

.synrxn-issue-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1rem 0 1.4rem;
}

.synrxn-icon-grid.compact {
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
}

/* Make project nav readable even after adding more sidebar entries. */
.bd-sidebar-primary .toctree-l1 > a {
  padding-top: 0.36rem;
  padding-bottom: 0.36rem;
}

@media (max-width: 640px) {
  .synrxn-callout-card,
  .synrxn-paper-card {
    display: block;
  }

  .synrxn-callout-icon,
  .synrxn-paper-icon {
    margin-bottom: 0.75rem;
  }
}

/* -------- Top navigation --------
   The left sidebar is a curated custom block; sidebar-nav-bs is intentionally
   disabled in conf.py to avoid duplicate Section Navigation headings. */
.synrxn-top-nav {
  align-items: center;
  gap: 0.15rem;
}

.synrxn-top-nav .nav-link {
  border-radius: 999px;
  font-weight: 750;
  padding: 0.45rem 0.8rem !important;
}

.synrxn-top-nav .nav-link:hover,
.synrxn-top-nav .nav-link:focus {
  background: var(--synrxn-sky);
  color: var(--synrxn-navy) !important;
}

@media (min-width: 960px) {
  .bd-sidebar-primary {
    display: block;
  }
}

/* -------- Persistent left-sidebar project navigation -------- */
.synrxn-sidebar-section {
  border-bottom: 1px solid var(--synrxn-border);
  margin: 0.4rem 0 0.9rem;
  padding: 0.2rem 0 0.85rem;
}

.synrxn-sidebar-title {
  color: var(--pst-color-text-base, var(--synrxn-text));
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.2;
  margin: 0.6rem 0 0.45rem;
  text-transform: none;
}

.synrxn-sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.synrxn-sidebar-list li {
  margin: 0.02rem 0;
}

.synrxn-sidebar-list a {
  border-radius: 0.375rem;
  color: var(--pst-color-text-base, var(--synrxn-text)) !important;
  display: block;
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.25;
  padding: 0.32rem 0.5rem;
  text-decoration: none !important;
}

.synrxn-sidebar-list a:hover,
.synrxn-sidebar-list a:focus {
  background: var(--synrxn-sky);
  color: var(--synrxn-navy) !important;
}

.synrxn-sidebar-list a::before,
.synrxn-sidebar-list a::after {
  content: none !important;
}