/* ============================================================
   IO.Astrodynamics — Custom Theme
   Gold (#B38B4F) · Blue (#3E80AF) · Red (#88403D)
   ============================================================ */

:root {
  /* Brand palette */
  --io-gold:        #B38B4F;
  --io-gold-light:  #C9A76C;
  --io-gold-subtle: #F5EFE3;
  --io-blue:        #3E80AF;
  --io-blue-light:  #5A9BC7;
  --io-blue-subtle: #EAF1F7;
  --io-red:         #88403D;
  --io-red-light:   #A25553;
  --io-red-subtle:  #F6EAEA;

  /* Material overrides */
  --md-primary-fg-color:        var(--io-gold);
  --md-primary-fg-color--light: var(--io-gold-light);
  --md-primary-fg-color--dark:  #946E38;
  --md-primary-bg-color:        #FFFFFF;
  --md-primary-bg-color--light: #FFFFFF;

  --md-accent-fg-color:         var(--io-blue);
  --md-accent-fg-color--transparent: rgba(62, 128, 175, 0.12);
  --md-accent-bg-color:         var(--io-blue-subtle);

  /* Typography */
  --md-text-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --md-code-font: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;

  /* Text colors — softer than pure black */
  --md-default-fg-color:             rgba(30, 30, 30, 0.87);
  --md-default-fg-color--light:      rgba(30, 30, 30, 0.54);
  --md-default-fg-color--lighter:    rgba(30, 30, 30, 0.32);
  --md-default-fg-color--lightest:   rgba(30, 30, 30, 0.07);

  /* Code block background */
  --md-code-bg-color: #F8F9FA;
  --md-code-fg-color: #2D3436;
}

/* ---- Logo ---- */

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 4.8rem;
  width: auto;
}

/* ---- Header / Navigation Bar ---- */

.md-header {
  background: #FFFFFF;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  color: var(--md-default-fg-color);
}

.md-header__title {
  color: var(--io-gold);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.md-header__button,
.md-header__topic,
.md-header__title .md-ellipsis {
  color: var(--md-default-fg-color);
}

.md-header[data-md-state="shadow"] {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* Search bar in header */
.md-search__input {
  background-color: #F5F5F5;
}

.md-search__input::placeholder {
  color: rgba(30, 30, 30, 0.4);
}

/* ---- Navigation Tabs ---- */

.md-tabs {
  background: #FFFFFF;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.md-tabs__link {
  color: rgba(30, 30, 30, 0.6);
  font-weight: 500;
  transition: color 0.2s ease;
}

.md-tabs__link:hover {
  color: var(--io-gold);
}

.md-tabs__item--active .md-tabs__link {
  color: var(--io-gold);
  border-bottom: 2px solid var(--io-gold);
}

/* ---- Sidebar Navigation ---- */

.md-nav__link {
  transition: color 0.15s ease;
}

.md-nav__link:hover {
  color: var(--io-blue);
}

.md-nav__link--active,
.md-nav__item--active > .md-nav__link {
  color: var(--io-gold);
  font-weight: 600;
}

/* Section labels in sidebar */
.md-nav__item--section > .md-nav__link {
  font-weight: 700;
  color: var(--md-default-fg-color);
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.06em;
}

/* ---- Content Typography ---- */

.md-typeset {
  font-size: 0.82rem;
  line-height: 1.7;
}

.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--md-default-fg-color);
  border-bottom: 2px solid var(--io-gold-subtle);
  padding-bottom: 0.4em;
  margin-bottom: 1em;
}

.md-typeset h2 {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--md-default-fg-color);
  margin-top: 2em;
}

.md-typeset h3 {
  font-weight: 600;
  color: rgba(30, 30, 30, 0.8);
}

/* Links */
.md-typeset a {
  color: var(--io-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.md-typeset a:hover {
  color: var(--io-blue-light);
  border-bottom-color: var(--io-blue-light);
}

/* ---- Code Blocks ---- */

.md-typeset code {
  border-radius: 4px;
  padding: 0.1em 0.35em;
  font-size: 0.85em;
  background: var(--md-code-bg-color);
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.md-typeset pre {
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.md-typeset pre > code {
  border: none;
  padding: 1em 1.2em;
  font-size: 0.82em;
  line-height: 1.6;
}

/* Copy button styling */
.md-clipboard {
  color: rgba(30, 30, 30, 0.3);
  transition: color 0.2s ease;
}

.md-clipboard:hover {
  color: var(--io-blue);
}

/* ---- Tables ---- */

.md-typeset table:not([class]) {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
  border-collapse: separate;
  border-spacing: 0;
}

.md-typeset table:not([class]) th {
  background: var(--io-gold-subtle);
  color: var(--md-default-fg-color);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 2px solid rgba(179, 139, 79, 0.2);
}

.md-typeset table:not([class]) td {
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.md-typeset table:not([class]) tr:last-child td {
  border-bottom: none;
}

.md-typeset table:not([class]) tr:hover td {
  background: rgba(62, 128, 175, 0.03);
}

/* ---- Admonitions ---- */

/* Shared styling */
.md-typeset .admonition,
.md-typeset details {
  border-radius: 8px;
  border: none;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.md-typeset .admonition-title,
.md-typeset summary {
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* Tip / Pro — gold */
.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-left: 4px solid var(--io-gold);
  background: var(--io-gold-subtle);
}

.md-typeset .tip > .admonition-title,
.md-typeset .tip > summary {
  background: rgba(179, 139, 79, 0.1);
}

.md-typeset .tip > .admonition-title::before,
.md-typeset .tip > summary::before {
  background-color: var(--io-gold);
}

/* Note / Info — blue */
.md-typeset .admonition.note,
.md-typeset details.note,
.md-typeset .admonition.info,
.md-typeset details.info {
  border-left: 4px solid var(--io-blue);
  background: var(--io-blue-subtle);
}

.md-typeset .note > .admonition-title,
.md-typeset .note > summary,
.md-typeset .info > .admonition-title,
.md-typeset .info > summary {
  background: rgba(62, 128, 175, 0.1);
}

.md-typeset .note > .admonition-title::before,
.md-typeset .note > summary::before,
.md-typeset .info > .admonition-title::before,
.md-typeset .info > summary::before {
  background-color: var(--io-blue);
}

/* Warning / Important / Danger — red */
.md-typeset .admonition.warning,
.md-typeset details.warning,
.md-typeset .admonition.danger,
.md-typeset details.danger,
.md-typeset .admonition.important,
.md-typeset details.important {
  border-left: 4px solid var(--io-red);
  background: var(--io-red-subtle);
}

.md-typeset .warning > .admonition-title,
.md-typeset .warning > summary,
.md-typeset .danger > .admonition-title,
.md-typeset .danger > summary,
.md-typeset .important > .admonition-title,
.md-typeset .important > summary {
  background: rgba(136, 64, 61, 0.1);
}

.md-typeset .warning > .admonition-title::before,
.md-typeset .warning > summary::before,
.md-typeset .danger > .admonition-title::before,
.md-typeset .danger > summary::before,
.md-typeset .important > .admonition-title::before,
.md-typeset .important > summary::before {
  background-color: var(--io-red);
}

/* ---- Tabbed Content ---- */

.md-typeset .tabbed-labels > label {
  font-weight: 500;
  color: rgba(30, 30, 30, 0.6);
  transition: color 0.2s ease;
}

.md-typeset .tabbed-labels > label:hover {
  color: var(--io-gold);
}

.md-typeset .tabbed-labels > .tabbed-label--active {
  color: var(--io-gold);
}

.md-typeset .tabbed-labels > label::after {
  background: var(--io-gold);
}

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

.md-footer {
  background: #FAFAFA;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.md-footer-meta {
  background: #F5F5F5;
}

/* Footer nav links */
.md-footer__link {
  color: var(--md-default-fg-color);
}

.md-footer__link:hover {
  color: var(--io-gold);
}

/* ---- Search ---- */

.md-search-result__link:hover {
  background: var(--io-gold-subtle);
}

.md-search-result mark {
  background: rgba(179, 139, 79, 0.25);
  color: inherit;
}

/* ---- Table of Contents (right sidebar) ---- */

.md-nav__link[data-md-state="blur"] {
  color: rgba(30, 30, 30, 0.4);
}

.md-sidebar--secondary .md-nav__link--active {
  color: var(--io-gold);
  border-left: 2px solid var(--io-gold);
  padding-left: 0.6em;
}

/* ---- Scrollbar ---- */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.15);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.25);
}

/* ---- Content tabs "Pro" indicator ---- */

.md-typeset .tabbed-labels > label[for*="pro"],
.md-typeset .tabbed-labels > label[for*="Pro"] {
  color: var(--io-gold);
}

/* ---- Smooth transitions ---- */

.md-nav__link,
.md-tabs__link,
.md-footer__link,
.md-typeset a {
  transition: color 0.2s ease;
}

/* ---- Source repo link in header ---- */

.md-source {
  color: rgba(30, 30, 30, 0.6);
}

.md-source:hover {
  color: var(--io-gold);
}