/* ==========================================================================
   PEROVSAT — Rhodes College brand theme
   Primary: #C4022B (Rhodes red)  |  Base: #000000 (black)
   ========================================================================== */

:root {
  --rhodes-red: #c4022b;
  --rhodes-red-light: #d4334f;
  --rhodes-red-dark: #8f011f;
  --rhodes-red-glow: rgba(196, 2, 43, 0.12);
  --rhodes-black: #000000;
  --rhodes-surface: #0f0f0f;
  --rhodes-surface-elevated: #1a1a1a;
  --rhodes-border: #2e2e2e;
  --rhodes-text: #e4e4e4;
  --rhodes-text-muted: #a3a3a3;
  /* Material .md-grid / .md-main__inner default — keeps header aligned with docs nav */
  --perovsat-docs-layout-max-width: 61rem;
}

/* --------------------------------------------------------------------------
   Light scheme
   -------------------------------------------------------------------------- */

[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--rhodes-red);
  --md-primary-fg-color--light: var(--rhodes-red-light);
  --md-primary-fg-color--dark: var(--rhodes-red-dark);
  --md-primary-bg-color: #ffffff;

  --md-accent-fg-color: var(--rhodes-red);
  --md-accent-fg-color--transparent: rgba(196, 2, 43, 0.08);

  --md-typeset-a-color: var(--rhodes-red-dark);

  --md-footer-bg-color: #1a1a1a;
  --md-footer-bg-color--dark: var(--rhodes-black);
}

/* --------------------------------------------------------------------------
   Header brand — logo + title
   -------------------------------------------------------------------------- */

.perovsat-header__start {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  margin: 0;
  padding: 0;
}

.perovsat-header-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  color: #ffffff;
  text-decoration: none;
  line-height: 1;
}

.perovsat-header-brand:hover {
  color: #ffffff;
  opacity: 0.92;
}

.perovsat-header-brand__logo {
  display: block;
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.perovsat-header-brand__text {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.perovsat-header-brand__name,
.perovsat-header-brand__section {
  line-height: 1;
}

.perovsat-header__end {
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: 0.25rem;
}

.perovsat-header__end .md-header__source {
  display: block;
  margin-left: 0.75rem;
  max-width: none;
  width: auto;
}

/* Main site link — external-link icon (matches Astro site) */
.perovsat-main-site-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.perovsat-main-site-link__icon {
  flex-shrink: 0;
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   Footer — GitHub link (matches Astro site)
   -------------------------------------------------------------------------- */

.perovsat-footer-github {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--rhodes-text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
}

.perovsat-footer-github:hover {
  color: var(--rhodes-red);
  text-decoration: underline;
}

.perovsat-footer-github__icon {
  width: 1.25rem;
  height: 1.25rem;
  object-fit: contain;
}

.md-copyright {
  width: 100%;
  text-align: center;
}

/* --------------------------------------------------------------------------
   Header & navigation
   -------------------------------------------------------------------------- */

[data-md-color-scheme="default"] .md-header {
  border-bottom: 1px solid #e0e0e0;
}

[data-md-color-scheme="default"] .md-header__inner {
  width: 100%;
  max-width: var(--perovsat-docs-layout-max-width);
  margin: 0 auto;
  padding: 0 0.2rem;
  justify-content: flex-start;
  box-sizing: border-box;
}

[data-md-color-scheme="default"] .md-tabs {
  border-bottom: 1px solid #e0e0e0;
}

[data-md-color-scheme="default"] .md-tabs__link--active,
[data-md-color-scheme="default"] .md-tabs__link:hover {
  color: var(--rhodes-red);
}

[data-md-color-scheme="default"] .md-nav__link--active,
[data-md-color-scheme="default"] .md-nav__link:hover {
  color: var(--rhodes-red);
}

[data-md-color-scheme="default"] .md-nav__item .md-nav__link--active {
  border-left-color: var(--rhodes-red);
}

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

[data-md-color-scheme="default"] .md-typeset .admonition,
[data-md-color-scheme="default"] .md-typeset details {
  border-color: #e0e0e0;
  box-shadow: none;
}

[data-md-color-scheme="default"] .md-typeset .warning > .admonition-title,
[data-md-color-scheme="default"] .md-typeset .warning > summary {
  background-color: rgba(196, 2, 43, 0.08);
  border-color: #e0e0e0;
}

/* --------------------------------------------------------------------------
   Landing pages (no sidebars)
   -------------------------------------------------------------------------- */

.md-content__inner:has(.perovsat-landing) {
  margin-top: 0;
  margin-bottom: 2rem;
}

.perovsat-landing {
  max-width: 52rem;
  margin: 0 auto;
}

.perovsat-landing .perovsat-hero {
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  width: 100vw;
  max-width: 100vw;
}

/* --------------------------------------------------------------------------
   Home page — hero
   -------------------------------------------------------------------------- */

.perovsat-hero {
  position: relative;
  margin: 0 0 2.5rem;
  padding: 3.5rem 2rem 3rem;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(196, 2, 43, 0.08), transparent 70%),
    linear-gradient(180deg, #f8f8f8 0%, #ffffff 100%);
  border-bottom: 1px solid #e0e0e0;
  overflow: hidden;
}

.perovsat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(196, 2, 43, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(196, 2, 43, 0.04) 0%, transparent 40%);
  pointer-events: none;
}

.perovsat-hero__inner {
  position: relative;
  max-width: 52rem;
  margin: 0 auto;
}

.perovsat-hero__badge {
  display: inline-block;
  margin-bottom: 1.25rem;
  padding: 0.3rem 0.9rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rhodes-red);
  background: rgba(196, 2, 43, 0.08);
  border: 1px solid rgba(196, 2, 43, 0.2);
  border-radius: 2rem;
}

.perovsat-hero__title {
  margin: 0 0 0.5rem;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.1;
  color: var(--rhodes-black);
}

.perovsat-hero__subtitle {
  margin: 0 0 0.75rem;
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 400;
  color: var(--rhodes-text-muted);
  line-height: 1.5;
}

.perovsat-hero__affiliation {
  margin: 0;
  font-size: 0.85rem;
  color: #6e6e6e;
  letter-spacing: 0.02em;
}

.perovsat-hero__affiliation strong {
  color: var(--rhodes-red);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Home page — stat strip
   -------------------------------------------------------------------------- */

.perovsat-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1rem;
  margin: 0 0 2.5rem;
  padding: 0;
  list-style: none;
}

.perovsat-stats__item {
  padding: 1.25rem 1rem;
  text-align: center;
  background: #fafafa;
  border: 1px solid #e8e8e8;
  border-radius: 0.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

[data-md-color-scheme="default"] .perovsat-stats__item:hover {
  border-color: #d0d0d0;
  box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.06);
}

.perovsat-stats__label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rhodes-red);
}

.perovsat-stats__value {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  color: #333333;
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   Home page — navigation cards
   -------------------------------------------------------------------------- */

.perovsat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0 2.5rem;
}

.perovsat-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  text-decoration: none !important;
  background: #fafafa;
  border: 1px solid #e8e8e8;
  border-radius: 0.5rem;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

[data-md-color-scheme="default"] .perovsat-card:hover {
  border-color: #d0d0d0;
  transform: translateY(-1px);
  box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.08);
}

.perovsat-card__icon {
  display: block;
  margin-bottom: 0.75rem;
  font-size: 1.5rem;
  line-height: 1;
}

.perovsat-card__title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--rhodes-black) !important;
}

.perovsat-card__desc {
  margin: 0;
  font-size: 0.85rem;
  color: #666666 !important;
  line-height: 1.5;
  flex-grow: 1;
}

.perovsat-card__arrow {
  margin-top: 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--rhodes-red) !important;
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   Home page — section headings
   -------------------------------------------------------------------------- */

.perovsat-section-title {
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #666666;
  border-bottom: 1px solid #e0e0e0;
}