@import url("https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css");

:root {
  --tre-ink: #0f172a;
  --tre-soft-ink: #334155;
  --tre-paper: #f6faff;
  --tre-surface: #eaf2fb;
  --tre-line: #cfdff2;
  --tre-line-strong: #b8cfea;
  --tre-rtd-blue: #133a5e;
  --tre-primary: #00509e;
  --tre-primary-strong: #0b3b75;
  --tre-nav-base: #133a5e;
  --tre-nav-border: #2f5f88;
  --tre-nav-text: #d9e8f6;
  --tre-nav-text-strong: #e6f1fb;
  --tre-nav-text-hover: #9ec6ea;
  --tre-nav-hover: #1a476f;
  --tre-nav-current: #1d4f7c;
  --tre-nav-submenu: #163f66;
  --tre-nav-submenu-deep: #1a496f;
  --tre-nav-sub-hover: #215887;
  --tre-nav-sub-hover-deep: #286396;
  --tre-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --tre-shadow-hover: 0 16px 30px rgba(15, 23, 42, 0.12);
}

.wy-nav-content {
  max-width: 1060px;
  background: var(--tre-paper);
  padding-bottom: 2rem;
}

.wy-nav-content-wrap {
  background: #e2ecf8;
}

.tre-hero {
  align-items: stretch;
  background: var(--tre-paper);
  border: 1px solid var(--tre-line);
  border-radius: 18px;
  box-shadow: var(--tre-shadow);
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 2.4fr) minmax(260px, 1fr);
  margin: 0.25rem 0 1.4rem;
  padding: 1.4rem;
}

.tre-eyebrow {
  color: var(--tre-primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 0.4rem;
  text-transform: uppercase;
}

.tre-lead {
  color: var(--tre-soft-ink);
  font-size: 1.08rem;
  line-height: 1.6;
  margin: 0.4rem 0 0;
  max-width: 48rem;
}

.tre-hero-actions {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  margin-top: 1.2rem;
}

.tre-hero-link {
  background: var(--tre-paper);
  border: 1px solid var(--tre-primary);
  border-radius: 999px;
  color: var(--tre-primary);
  display: inline-flex;
  gap: 0.4rem;
  font-size: 0.86rem;
  font-weight: 700;
  align-items: center;
  padding: 0.5rem 0.72rem;
  white-space: nowrap;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.tre-hero-link:hover {
  background: var(--tre-primary);
  box-shadow: var(--tre-shadow);
  color: #ffffff;
  transform: translateY(-2px);
}

.tre-hero-link-secondary {
  background: var(--tre-paper);
  color: var(--tre-primary);
}

.tre-hero-link-secondary:hover {
  color: #ffffff;
}

.tre-hero-side {
  display: flex;
}

.tre-hero-panel {
  background: var(--tre-surface);
  border: 1px solid var(--tre-line-strong);
  border-radius: 14px;
  padding: 1rem;
  width: 100%;
}

.tre-hero-panel h2 {
  align-items: center;
  border-bottom: 0;
  color: var(--tre-ink);
  display: flex;
  font-size: 1rem;
  gap: 0.55rem;
  margin: 0 0 0.8rem;
  padding-bottom: 0;
}

.tre-hero-panel ul {
  list-style: none;
  margin: 0;
  padding-left: 0;
}

.tre-hero-panel li {
  align-items: flex-start;
  color: var(--tre-soft-ink);
  display: flex;
  gap: 0.55rem;
  margin-bottom: 0.55rem;
}

.tre-hero-panel .tre-icon-heading,
.tre-hero-panel .tre-icon-list {
  color: var(--tre-primary);
}

.tre-summary-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 0 0 1.5rem;
}

.tre-summary-card {
  background: var(--tre-paper);
  border: 1px solid var(--tre-line);
  border-radius: 14px;
  box-shadow: var(--tre-shadow);
  padding: 1rem 1.05rem;
}

.tre-summary-card h2 {
  align-items: center;
  border-bottom: 0;
  display: flex;
  font-size: 1rem;
  gap: 0.55rem;
  margin: 0 0 0.45rem;
  padding-bottom: 0;
}

.tre-summary-card p {
  margin: 0 0 0.75rem;
}

.tre-summary-card a {
  align-items: center;
  color: var(--tre-primary);
  display: inline-flex;
  gap: 0.45rem;
  font-weight: 700;
  text-decoration: none;
}

.tre-summary-card a:hover {
  color: var(--tre-primary-strong);
}

h1 {
  color: var(--tre-primary-strong);
  margin-bottom: 0.75rem;
  margin-top: 0;
}

h2 {
  border-bottom: 2px solid #d9e7ff;
  color: var(--tre-primary-strong);
  margin-top: 1.55rem;
  margin-bottom: 1rem;
  padding-bottom: 0.35rem;
}

h3 {
  color: var(--tre-ink);
}

img[alt="Getting Started Flowchart"] {
  background: var(--tre-paper);
  border: 1px solid #dce8fb;
  border-radius: 12px;
  box-shadow: var(--tre-shadow);
  display: block;
  margin: 1.2rem auto 0.4rem auto;
  max-width: 100%;
}

.tre-card-grid {
  display: grid;
  gap: 1rem;
  margin: 1rem 0 1.4rem;
}

.tre-card-grid-steps {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.tre-card-grid-modules {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.tre-card {
  background: var(--tre-paper);
  border: 1px solid var(--tre-line);
  border-radius: 14px;
  box-shadow: var(--tre-shadow);
  padding: 1rem 1.1rem;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.tre-card:hover {
  border-color: var(--tre-line-strong);
  box-shadow: var(--tre-shadow-hover);
  transform: translateY(-3px);
}

.tre-step-card {
  border-top: 4px solid var(--tre-primary);
}

.tre-module-card {
  border-top: 4px solid #5f85b3;
}

.tre-card h3 {
  align-items: center;
  display: flex;
  font-size: 1.05rem;
  gap: 0.6rem;
  margin: 0 0 0.75rem;
}

.tre-card-number {
  align-items: center;
  background: #eaf2fb;
  border: 1px solid #cdddF3;
  border-radius: 999px;
  color: var(--tre-primary-strong);
  display: inline-flex;
  font-size: 0.88rem;
  font-weight: 700;
  height: 1.9rem;
  justify-content: center;
  min-width: 1.9rem;
}

.tre-card ul {
  margin: 0;
  padding-left: 1.1rem;
}

p,
li {
  color: var(--tre-soft-ink);
}

.tre-card li {
  margin-bottom: 0.35rem;
}

.tre-card a {
  color: var(--tre-primary);
  font-weight: 600;
  text-decoration-thickness: 1px;
}

.tre-card a:hover {
  color: var(--tre-primary-strong);
}

.tre-icon-heading {
  color: var(--tre-primary);
  flex: 0 0 auto;
  font-size: 0.95em;
}

.tre-icon-inline {
  flex: 0 0 auto;
}

.tre-icon-list {
  color: var(--tre-primary);
  flex: 0 0 auto;
  margin-top: 0.15rem;
}

@media (max-width: 700px) {
  .tre-hero {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .tre-hero-actions {
    flex-direction: row;
  }

  .tre-hero-link {
    justify-content: center;
  }

  .tre-card-grid {
    gap: 0.85rem;
  }

  .tre-card {
    border-radius: 12px;
    padding: 0.9rem;
  }
}

.ethical-rtd,
.ethical-sidebar,
#rtd-footer-container,
[data-ea-publisher],
[data-ea-type] {
  display: none !important;
}

.wy-side-nav-search {
  background: var(--tre-nav-base);
  border-bottom: 0;
  margin-bottom: 0;
}

.wy-side-nav-search .wy-form {
  background: var(--tre-nav-base);
  margin: 0;
  padding: 0;
}

.wy-side-nav-search > a,
.wy-side-nav-search .wy-dropdown > a {
  color: var(--tre-nav-text-strong);
}

.wy-side-nav-search .wy-form input[type="text"] {
  background: var(--tre-nav-base);
  border: 1px solid var(--tre-nav-border);
  box-shadow: none;
  color: var(--tre-nav-text-strong);
  margin-bottom: 0;
}

.wy-side-nav-search .wy-form input[type="text"]::placeholder {
  color: var(--tre-nav-text);
}

.wy-side-nav-search .wy-form input[type="text"]:focus {
  border-color: var(--tre-nav-text-hover);
}

.wy-nav-side,
.wy-menu,
.wy-menu-vertical {
  background: var(--tre-nav-base);
}

.wy-menu-vertical a {
  color: var(--tre-nav-text-strong);
}

.wy-menu-vertical a:visited,
.wy-menu-vertical a:focus,
.wy-menu-vertical a:active,
.wy-menu-vertical li.toctree-l1 > a,
.wy-menu-vertical li.toctree-l2 > a,
.wy-menu-vertical li.toctree-l3 > a,
.wy-menu-vertical li.toctree-l4 > a,
.wy-menu-vertical li.toctree-l5 > a,
.wy-menu-vertical li.toctree-l6 > a,
.wy-menu-vertical li.current a,
.wy-menu-vertical li.current ul li a:visited,
.wy-menu-vertical li.current ul li a:focus,
.wy-menu-vertical li.current ul li a:active {
  color: var(--tre-nav-text) !important;
}

.wy-menu-vertical li.current > a,
.wy-menu-vertical li.current > a:visited,
.wy-menu-vertical li.current > a:focus,
.wy-menu-vertical li.current > a:active {
  color: var(--tre-nav-text-hover) !important;
}

.wy-menu-vertical .toctree-expand {
  color: var(--tre-nav-text-strong) !important;
  font-weight: 700;
  opacity: 1;
}

.wy-menu-vertical li.current > a .toctree-expand,
.wy-menu-vertical li > a:hover .toctree-expand,
.wy-menu-vertical li.current ul li.current > a .toctree-expand {
  color: var(--tre-nav-text-hover) !important;
}

.wy-menu-vertical a:hover {
  background: var(--tre-nav-hover);
  color: var(--tre-nav-text-hover);
}

.wy-menu-vertical li.current > a,
.wy-menu-vertical li.current > a:hover {
  background: var(--tre-nav-current);
  border-color: var(--tre-nav-border);
  color: var(--tre-nav-text-hover);
}

.wy-menu-vertical li.current > ul {
  background: var(--tre-nav-submenu);
}

.wy-menu-vertical li.current ul li.current > ul {
  background: var(--tre-nav-submenu-deep);
}

.wy-menu-vertical li.current ul li a {
  background: transparent;
  color: var(--tre-nav-text);
}

.wy-menu-vertical li.toctree-l2 > a,
.wy-menu-vertical li.toctree-l3 > a,
.wy-menu-vertical li.toctree-l4 > a,
.wy-menu-vertical li.toctree-l5 > a,
.wy-menu-vertical li.toctree-l6 > a {
  color: var(--tre-nav-text);
}

.wy-menu-vertical li.current ul li.current ul li a {
  color: var(--tre-nav-text-strong);
}

.wy-menu-vertical li.current ul li.toctree-l3 > a,
.wy-menu-vertical li.current ul li.toctree-l4 > a,
.wy-menu-vertical li.current ul li.toctree-l5 > a,
.wy-menu-vertical li.current ul li.toctree-l6 > a {
  background: transparent;
  color: var(--tre-nav-text-strong);
}

.wy-menu-vertical li.current ul li a:hover,
.wy-menu-vertical li.current ul li.current > a {
  background: var(--tre-nav-sub-hover);
  color: var(--tre-nav-text-hover);
}

.wy-menu-vertical li.current ul li.current ul li a:hover,
.wy-menu-vertical li.current ul li.current ul li.current > a {
  background: var(--tre-nav-sub-hover-deep);
  color: var(--tre-nav-text-hover);
}

.wy-menu-vertical li.current ul li ul li a:hover,
.wy-menu-vertical li.current ul li ul li.current > a {
  background: var(--tre-nav-sub-hover-deep);
  color: var(--tre-nav-text-hover);
}

/* Final normalization: force all menu levels and states onto blue palette. */
.wy-menu-vertical li a,
.wy-menu-vertical li a:link,
.wy-menu-vertical li a:visited,
.wy-menu-vertical li a:focus,
.wy-menu-vertical li a:active,
.wy-menu-vertical li.toctree-l1 > a,
.wy-menu-vertical li.toctree-l2 > a,
.wy-menu-vertical li.toctree-l3 > a,
.wy-menu-vertical li.toctree-l4 > a,
.wy-menu-vertical li.toctree-l5 > a,
.wy-menu-vertical li.toctree-l6 > a {
  color: var(--tre-nav-text) !important;
}

.wy-menu-vertical li.current > a,
.wy-menu-vertical li.current > a:link,
.wy-menu-vertical li.current > a:visited,
.wy-menu-vertical li.current > a:focus,
.wy-menu-vertical li.current > a:active,
.wy-menu-vertical li.current ul li.current > a,
.wy-menu-vertical li.current ul li.current > a:link,
.wy-menu-vertical li.current ul li.current > a:visited {
  color: var(--tre-nav-text-strong) !important;
}

.wy-menu-vertical li a:hover,
.wy-menu-vertical li.current ul li a:hover,
.wy-menu-vertical li.current ul li.current ul li a:hover {
  color: var(--tre-nav-text-hover) !important;
}

/* Explicit level-3/4 hard override to remove any remaining RTD gray defaults. */
.wy-menu-vertical li.toctree-l3,
.wy-menu-vertical li.toctree-l4,
.wy-menu-vertical li.toctree-l3.current,
.wy-menu-vertical li.toctree-l4.current {
  background: transparent !important;
}

.wy-menu-vertical li.toctree-l3 > a,
.wy-menu-vertical li.toctree-l4 > a,
.wy-menu-vertical li.toctree-l3 > a:link,
.wy-menu-vertical li.toctree-l4 > a:link,
.wy-menu-vertical li.toctree-l3 > a:visited,
.wy-menu-vertical li.toctree-l4 > a:visited,
.wy-menu-vertical li.toctree-l3 > a:focus,
.wy-menu-vertical li.toctree-l4 > a:focus,
.wy-menu-vertical li.toctree-l3 > a:active,
.wy-menu-vertical li.toctree-l4 > a:active {
  background: transparent !important;
  color: var(--tre-nav-text-strong) !important;
}

.wy-menu-vertical li.toctree-l3 > a:hover,
.wy-menu-vertical li.toctree-l4 > a:hover,
.wy-menu-vertical li.toctree-l3.current > a,
.wy-menu-vertical li.toctree-l4.current > a,
.wy-menu-vertical li.toctree-l3.current > a:hover,
.wy-menu-vertical li.toctree-l4.current > a:hover {
  background: var(--tre-nav-sub-hover-deep) !important;
  color: var(--tre-nav-text-hover) !important;
}

.rst-versions,
.wy-side-nav-search + .wy-menu + .rst-versions {
  background: var(--tre-nav-submenu);
  border-top: 1px solid var(--tre-nav-border);
  color: var(--tre-nav-text);
}

.rst-versions .rst-current-version {
  background: var(--tre-nav-base);
  color: var(--tre-nav-text-strong);
}

.rst-versions a,
.rst-versions .rst-other-versions small {
  color: var(--tre-nav-text);
}

.rst-versions a:hover {
  color: #9ec6ea;
}

/* Global menu normalization: remove gray from all levels and states. */
.wy-nav-side .wy-menu-vertical,
.wy-nav-side .wy-menu-vertical ul,
.wy-nav-side .wy-menu-vertical li,
.wy-nav-side .wy-menu-vertical li a,
.wy-nav-side .wy-menu-vertical li a:link,
.wy-nav-side .wy-menu-vertical li a:visited,
.wy-nav-side .wy-menu-vertical li a:focus,
.wy-nav-side .wy-menu-vertical li a:active,
.wy-nav-side .wy-menu-vertical li span,
.wy-nav-side .wy-menu-vertical .toctree-expand,
.wy-nav-side .wy-menu-vertical .caption,
.wy-nav-side .wy-menu-vertical .caption-text {
  background: transparent !important;
  color: var(--tre-nav-text) !important;
  border-color: var(--tre-nav-border) !important;
}

.wy-nav-side .wy-menu-vertical li.current > a,
.wy-nav-side .wy-menu-vertical li.current > a:link,
.wy-nav-side .wy-menu-vertical li.current > a:visited,
.wy-nav-side .wy-menu-vertical li.current > a:focus,
.wy-nav-side .wy-menu-vertical li.current > a:active,
.wy-nav-side .wy-menu-vertical li.current ul li.current > a,
.wy-nav-side .wy-menu-vertical li.current ul li.current > a:link,
.wy-nav-side .wy-menu-vertical li.current ul li.current > a:visited {
  background: var(--tre-nav-current) !important;
  color: var(--tre-nav-text-strong) !important;
}

.wy-nav-side .wy-menu-vertical li a:hover,
.wy-nav-side .wy-menu-vertical li.current ul li a:hover,
.wy-nav-side .wy-menu-vertical li.current ul li.current ul li a:hover,
.wy-nav-side .wy-menu-vertical li.current ul li.current > a:hover {
  background: var(--tre-nav-sub-hover-deep) !important;
  color: var(--tre-nav-text-hover) !important;
}

.wy-nav-side .wy-menu-vertical .toctree-expand,
.wy-nav-side .wy-menu-vertical li a:hover .toctree-expand,
.wy-nav-side .wy-menu-vertical li.current > a .toctree-expand,
.wy-nav-side .wy-menu-vertical li.current ul li.current > a .toctree-expand {
  color: var(--tre-nav-text-hover) !important;
  opacity: 1 !important;
}