/*
 * Cassiopeia child "rathgeber" – design A "hell & ruhig" with a dark variant
 * All colors are tokens (--rr-*); dark mode swaps the tokens:
 *   - follows the device setting (prefers-color-scheme) unless the visitor chose a theme
 *   - the toggle in the header (user.js) sets <html data-theme="light|dark">
 * The tokens are mapped onto the Cassiopeia/Bootstrap variables so core components follow along.
 */

/* ---------- Tokens ---------- */
:root {
  --rr-bg: #f7f8fa;
  --rr-surface: #ffffff;
  --rr-surface-2: #f1f3f6;
  --rr-border: #e4e7eb;
  --rr-text: #1f2933;
  --rr-text-strong: #111827;
  --rr-muted: #5f6b7a;
  --rr-accent: #1d4ed8;
  --rr-accent-strong: #1e3a8a;
  --rr-accent-soft: #e0e7ff;
  --rr-accent-hover: #eef2ff;
  --rr-on-accent: #ffffff;
  --rr-shadow: 0 1px 2px rgb(0 0 0 / 5%);
  --rr-radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --rr-bg: #0f141c;
    --rr-surface: #1a2130;
    --rr-surface-2: #232c3d;
    --rr-border: #2e384a;
    --rr-text: #dfe5ee;
    --rr-text-strong: #f3f6fa;
    --rr-muted: #a3adbd;
    --rr-accent: #7aa7ff;
    --rr-accent-strong: #c7d8ff;
    --rr-accent-soft: #23345c;
    --rr-accent-hover: #1f2b44;
    --rr-on-accent: #0f141c;
    --rr-shadow: 0 1px 2px rgb(0 0 0 / 40%);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --rr-bg: #0f141c;
  --rr-surface: #1a2130;
  --rr-surface-2: #232c3d;
  --rr-border: #2e384a;
  --rr-text: #dfe5ee;
  --rr-text-strong: #f3f6fa;
  --rr-muted: #a3adbd;
  --rr-accent: #7aa7ff;
  --rr-accent-strong: #c7d8ff;
  --rr-accent-soft: #23345c;
  --rr-accent-hover: #1f2b44;
  --rr-on-accent: #0f141c;
  --rr-shadow: 0 1px 2px rgb(0 0 0 / 40%);
  color-scheme: dark;
}

/* map onto Cassiopeia / Bootstrap variables (forms, cards, buttons, links follow) */
:root,
:root[data-theme] {
  --cassiopeia-color-primary: var(--rr-accent-strong);
  --cassiopeia-color-link: var(--rr-accent);
  --cassiopeia-color-hover: var(--rr-accent);
  --link-color: var(--rr-accent);
  --link-hover-color: var(--rr-accent);
  --body-bg: var(--rr-surface);
  --body-color: var(--rr-text);
  --border-color: var(--rr-border);
  --card-bg: var(--rr-surface);
  --emphasis-color: var(--rr-text-strong);
  --secondary-bg: var(--rr-surface-2);
  --tertiary-bg: var(--rr-surface-2);
  --secondary-color: var(--rr-muted);
}

/* muted text (e.g. comment author/date, search result url/date) and placeholders must stay readable in both themes */
.text-muted,
.breadcrumb-item.active,
.com-finder .result__title-url,
.com-finder .result__date {
  color: var(--rr-muted) !important;
}

::placeholder {
  color: var(--rr-muted);
  opacity: 1;
}

/* primary buttons use the accent token instead of Cassiopeia's fixed dark blue */
.btn-primary {
  --btn-bg: var(--rr-accent);
  --btn-border-color: var(--rr-accent);
  --btn-color: var(--rr-on-accent);
  --btn-hover-bg: var(--rr-accent-strong);
  --btn-hover-border-color: var(--rr-accent-strong);
  --btn-hover-color: var(--rr-surface);
  /* Cassiopeia paints .btn-primary with its own primary color, so set it directly */
  background-color: var(--rr-accent);
  border-color: var(--rr-accent);
  color: var(--rr-on-accent);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--rr-accent-strong);
  border-color: var(--rr-accent-strong);
  color: var(--rr-surface);
}

.btn-outline-primary {
  --btn-color: var(--rr-accent);
  --btn-border-color: var(--rr-accent);
  --btn-hover-bg: var(--rr-accent);
  --btn-hover-border-color: var(--rr-accent);
  --btn-hover-color: var(--rr-on-accent);
  --btn-active-bg: var(--rr-accent);
  --btn-active-color: var(--rr-on-accent);
}

/* ---------- Page ---------- */
html,
body {
  background: var(--rr-bg);
  color: var(--rr-text);
}

body {
  font-size: 1.0625rem;
  line-height: 1.65;
}

a {
  color: var(--rr-accent);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--rr-text-strong);
  line-height: 1.25;
}

/* ---------- Header: white bar, brand left, search + theme toggle right ---------- */
.container-header {
  background: var(--rr-surface);
  background-image: none;
  border-bottom: 1px solid var(--rr-border);
  box-shadow: none;
}

.container-header .navbar-brand {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 0.75rem;
  align-items: center;
  padding: 0.75rem 0;
}

/* placeholder brand mark until a logo is chosen */
.container-header .navbar-brand::before {
  content: "RR";
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  background: var(--rr-accent);
  color: var(--rr-on-accent);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.container-header .navbar-brand a,
.container-header .navbar-brand a:hover,
.container-header .navbar-brand a:focus {
  color: var(--rr-text-strong);
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.15;
}

.container-header .site-description {
  color: var(--rr-muted);
  font-size: 0.85rem;
}

.container-header .container-nav {
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
}

.container-header .container-search {
  margin-top: 0;
}

.container-header .mod-finder input[type="search"],
.container-header .mod-finder input[type="text"] {
  min-width: 15rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--rr-surface-2);
  color: var(--rr-text);
  padding: 0.45rem 1rem;
}

.container-header .mod-finder input:focus {
  border-color: var(--rr-accent);
  outline: none;
  box-shadow: 0 0 0 3px var(--rr-accent-soft);
}

.container-header .mod-finder .awesomplete > ul {
  background: var(--rr-surface);
  border: 1px solid var(--rr-border);
}

@media (width >= 992px) {
  .container-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-inline: max(1rem, calc((100% - 1320px) / 2));
  }

  .container-header > .grid-child {
    width: auto;
    max-width: none;
    margin: 0;
  }

  .container-header > .grid-child:has(.navbar-brand) {
    flex: 1 1 auto;
  }

  .container-header > .container-nav {
    flex: 0 0 auto;
    flex-wrap: nowrap;
    padding-bottom: 0;
  }
}

/* theme toggle (created by user.js) */
.rr-theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  flex: none;
  border: 1px solid var(--rr-border);
  border-radius: 50%;
  background: var(--rr-surface-2);
  color: var(--rr-text);
  cursor: pointer;
}

.rr-theme-toggle:hover,
.rr-theme-toggle:focus-visible {
  border-color: var(--rr-accent);
  color: var(--rr-accent);
}

.rr-theme-toggle svg {
  width: 1.15rem;
  height: 1.15rem;
}

/* ---------- Content area: white card ---------- */
.container-component > main,
.container-component > .main,
.container-component #system-message-container + main {
  background: var(--rr-surface);
  border: 1px solid var(--rr-border);
  border-radius: var(--rr-radius);
  box-shadow: var(--rr-shadow);
  padding: 2rem 2.25rem;
}

@media (width < 768px) {
  .container-component > main {
    padding: 1.25rem 1rem;
  }
}

/* breadcrumbs: quiet line above the card */
.mod-breadcrumbs__wrapper .breadcrumb,
.container-component .breadcrumb {
  background: transparent;
  padding: 0.25rem 0 0;
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--rr-muted);
}

/* the card directly below the breadcrumb line sits close to it */
.container-component > .mod-breadcrumbs__wrapper ~ main {
  margin-top: 0.6rem;
}

.container-component .breadcrumb a {
  color: var(--rr-muted);
}

/* article text: comfortable line length, responsive images */
.com-content-article__body,
.item-page [itemprop="articleBody"] {
  max-width: 75ch;
}

.com-content-article__body img,
.item-page [itemprop="articleBody"] img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

.com-content-article__body table {
  max-width: 100%;
  display: block;
  overflow-x: auto;
}

/* old articles (2011+) carry fixed inline text/background colors (often black on white):
   in dark mode they would vanish, so the theme colors win there (cleanup follows in stage 3) */
:root[data-theme="dark"] .com-content-article__body [style*="color"],
:root[data-theme="dark"] .com-content-article__body [bgcolor] {
  color: inherit !important;
  background-color: transparent !important;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .com-content-article__body [style*="color"],
  :root:not([data-theme="light"]) .com-content-article__body [bgcolor] {
    color: inherit !important;
    background-color: transparent !important;
  }
}

.item-page h1,
.com-content-article h1,
.page-header h1,
.page-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-bottom: 0.75rem;
}

/* previous / next */
.pagenavigation .btn,
.pagenavigation .page-link {
  border: 1px solid var(--rr-border);
  border-radius: 10px;
  background: var(--rr-surface);
  color: var(--rr-text);
}

.pagenavigation .btn:hover,
.pagenavigation .btn:focus {
  border-color: var(--rr-accent);
  color: var(--rr-accent);
}

/* ---------- Start page: hero (article layout rr_hero) ---------- */
.rr-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
}

.rr-hero__kicker {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rr-accent);
}

.rr-hero__title {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  line-height: 1.15;
}

.rr-hero__body {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--rr-text);
}

.rr-hero__body p {
  margin: 0 0 0.9rem;
}

.rr-hero__button {
  margin-top: 0.4rem;
  padding: 0.65rem 1.2rem;
  border-radius: 10px;
  font-weight: 600;
}

/* jump target of the hero button: keep a little space above the tiles */
#projekte {
  scroll-margin-top: 1.5rem;
}

.rr-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin: 1.5rem 0 0;
}

.rr-hero__facts div {
  display: flex;
  flex-direction: column-reverse;
}

.rr-hero__facts dt {
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--rr-muted);
}

.rr-hero__facts dd {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--rr-accent);
}

.rr-hero__image {
  margin: 0;
}

.rr-hero__image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 12px;
}

@media (width < 768px) {
  .rr-hero {
    grid-template-columns: 1fr;
  }

  .rr-hero__image {
    order: -1;
  }
}

/* ---------- Start page: project tiles (mod_articles layout rr_tiles, position main-bottom) ---------- */
.container-component .main-bottom.card,
.container-component .main-bottom {
  background: transparent;
  border: 0;
  box-shadow: none;
  margin-top: 2rem;
}

.container-component .main-bottom > .card-header {
  background: transparent;
  border: 0;
  padding: 0 0 1rem;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--rr-text-strong);
}

.container-component .main-bottom > .card-body {
  padding: 0;
}

.rr-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rr-tile__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--rr-border);
  border-radius: var(--rr-radius);
  background: var(--rr-surface);
  box-shadow: var(--rr-shadow);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.rr-tile__link:hover,
.rr-tile__link:focus-visible {
  border-color: var(--rr-accent);
  box-shadow: 0 6px 18px rgb(0 0 0 / 10%);
  transform: translateY(-2px);
}

.rr-tile__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.rr-tile__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem 1.1rem 1.2rem;
}

.rr-tile__tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--rr-accent);
}

.rr-tile__title {
  margin: 0;
  font-size: 1.1rem;
  color: var(--rr-text-strong);
}

.rr-tile__text {
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--rr-muted);
}

.rr-tile__more {
  margin-top: auto;
  padding-top: 0.35rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--rr-accent);
}

@media (prefers-reduced-motion: reduce) {
  .rr-tile__link {
    transition: none;
  }

  .rr-tile__link:hover {
    transform: none;
  }
}

/* ---------- Sidebar menu: no box, quiet label, pill for the current page ---------- */
.container-sidebar-left .card {
  background: transparent;
  border: 0;
  box-shadow: none;
}

.container-sidebar-left .card-header {
  background: transparent;
  border: 0;
  padding: 0 0.75rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rr-muted);
}

.container-sidebar-left .card-body {
  padding: 0;
}

.card .mod-menu li > a {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-left: 0;
  border-radius: 8px;
  color: var(--rr-text);
  text-decoration: none;
}

.card .mod-menu li > a:hover,
.card .mod-menu li > a:focus {
  background: var(--rr-accent-hover);
  text-decoration: none;
}

/* branch that contains the current page */
.card .mod-menu li.active > a {
  color: var(--rr-accent);
  font-weight: 600;
}

/* the current page itself */
.card .mod-menu li.current > a {
  background: var(--rr-accent-soft);
  color: var(--rr-accent-strong);
  font-weight: 700;
}

/* sub items: thin accent line on the left */
.card .mod-menu .mod-menu__sub {
  margin: 0.15rem 0 0.4rem 0.9rem;
  padding-left: 0.5rem;
  border-left: 2px solid var(--rr-accent-soft);
}

.card .mod-menu .mod-menu__sub a {
  font-size: 0.92rem;
}

.card .mod-menu .mod-menu__toggle-sub {
  color: var(--rr-muted);
}

/* ---------- Footer: white bar ---------- */
.container-footer.footer {
  background: var(--rr-surface);
  background-image: none;
  color: var(--rr-muted);
  border-top: 1px solid var(--rr-border);
  margin-top: 2.5rem;
}

.footer a:not(.btn) {
  color: var(--rr-muted);
  text-decoration: none;
}

.footer a:not(.btn):hover,
.footer a:not(.btn):focus {
  color: var(--rr-accent);
  text-decoration: underline;
}

/* round back-to-top button: fixed square size (Cassiopeia's padding/line-height made it oval) */
.back-to-top-link {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  line-height: 1;
  background: var(--rr-accent);
  color: var(--rr-on-accent);
  border-radius: 50%;
}

/* ---------- Comments (JComments) and guestbook follow the tokens ---------- */
#jc,
#jc .comments,
#jc .rbox,
#jc #comments-form,
.pgb-container {
  color: var(--rr-text);
}

#jc .comment-box,
#jc .rbox,
#jc blockquote {
  background: var(--rr-surface-2);
  border-color: var(--rr-border);
  color: var(--rr-text);
}

#jc input,
#jc textarea,
.pgb-container input,
.pgb-container textarea {
  background: var(--rr-surface);
  color: var(--rr-text);
  border-color: var(--rr-border);
}

/* ---------- Phones/tablets (< 992px, Cassiopeia's breakpoint): menu on top, collapsible ---------- */
/* heading button created by user.js; looks like the plain card heading on desktop */
.rr-menu-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  text-align: left;
  cursor: default;
}

.rr-menu-toggle .rr-menu-icon,
.rr-menu-toggle .rr-menu-chevron {
  display: none;
}

@media (width < 992px) {
  @supports (display: grid) {
    /* left sidebar above the content instead of below it */
    .site-grid {
      grid-template-areas: ". banner banner banner banner ."
                           ". top-a top-a top-a top-a ."
                           ". top-b top-b top-b top-b ."
                           ". side-l side-l side-l side-l ."
                           ". comp comp comp comp ."
                           ". side-r side-r side-r side-r ."
                           ". bot-a bot-a bot-a bot-a ."
                           ". bot-b bot-b bot-b bot-b .";
    }
  }

  /* on phones the menu is a card again, so the button reads as a control */
  .container-sidebar-left .card {
    background: var(--rr-surface);
    border: 1px solid var(--rr-border);
    border-radius: var(--rr-radius);
    box-shadow: var(--rr-shadow);
  }

  .container-sidebar-left .card-header {
    padding: 0.75rem 1rem;
    font-size: 1rem;
    letter-spacing: 0;
    text-transform: none;
    color: var(--rr-text-strong);
  }

  .container-sidebar-left .card-body {
    padding: 0 0.5rem 0.75rem;
  }

  .rr-menu-toggle {
    cursor: pointer;
  }

  .rr-menu-toggle .rr-menu-icon,
  .rr-menu-toggle .rr-menu-chevron {
    display: inline-block;
  }

  .rr-menu-toggle .rr-menu-chevron {
    margin-left: auto;
    transition: transform 0.2s;
  }

  .rr-menu-toggle[aria-expanded="true"] .rr-menu-chevron {
    transform: rotate(180deg);
  }

  .rr-menu-card:not(.is-open) > .card-body {
    display: none;
  }

  .container-header .mod-finder input[type="search"],
  .container-header .mod-finder input[type="text"] {
    min-width: 0;
    width: 100%;
    max-width: none;
  }

  /* search and theme toggle share one compact row below the brand */
  .container-header .grid-child {
    padding-block: 0.25rem;
  }

  .container-header .container-nav {
    flex-wrap: nowrap;
    padding: 0 0.5rem 0.75rem;
  }

  .container-header .container-nav .container-search {
    flex: 1 1 auto;
    margin-top: 0;
  }

  .container-header .mod-finder,
  .container-header .mod-finder form,
  .container-header .mod-finder .awesomplete {
    width: 100%;
  }
}