/* BTK 2026 - Basis-Layout. Wird in spaeteren Ausbaustufen erweitert. */

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--btk-bg);
  color: var(--btk-ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: var(--btk-font-base);
  line-height: 1.6;
}

a { color: var(--btk-primary); }
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--btk-primary);
  outline-offset: 2px;
}

img { max-width: 100%; height: auto; }

.btk-container {
  width: min(1180px, 100% - 2rem);
  margin-inline: auto;
}

.screen-reader-text {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.skip-link:focus {
  position: fixed;
  top: 0.5rem; left: 0.5rem;
  z-index: 999;
  clip-path: none;
  width: auto; height: auto;
  padding: 0.75rem 1rem;
  background: var(--btk-bg);
  color: var(--btk-ink);
  border: 2px solid var(--btk-primary);
}

/* --- Badges ------------------------------------------------------------- */

.btk-badge {
  display: inline-block;
  padding: 0.15em 0.6em;
  border-radius: var(--btk-radius);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.4;
}

.btk-badge--kategorie {
  background: var(--btk-badge-color, var(--btk-cat-fallback));
  color: #fff;
}

.btk-badge--status {
  background: transparent;
  color: var(--btk-ink);
  border: 1px solid var(--btk-border);
}

.btk-badge--status::before {
  content: "";
  display: inline-block;
  width: 0.6em; height: 0.6em;
  margin-right: 0.4em;
  border-radius: 50%;
  background: var(--btk-status-color, var(--btk-status-ausgebucht));
  vertical-align: baseline;
}

/* --- Buttons ------------------------------------------------------------ */

.btk-button {
  display: inline-block;
  padding: 0.6em 1.2em;
  border: 2px solid var(--btk-primary);
  border-radius: var(--btk-radius);
  background: var(--btk-primary);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.btk-button:hover { background: var(--btk-primary-dark); border-color: var(--btk-primary-dark); }

.btk-button--ghost { background: transparent; color: var(--btk-primary); }
.btk-button--ghost:hover { background: var(--btk-primary); color: #fff; }

/* ==========================================================================
   Filterleiste (Archiv-Templates)
   ========================================================================== */

.btk-filterleiste {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  margin-block: 1.5rem;
  padding: 1rem;
  background: var(--btk-bg-muted);
  border-radius: var(--btk-radius);
}

.btk-filterleiste label { font-weight: 600; margin-inline-end: 0.4em; }

.btk-filter-checkbox { display: flex; align-items: center; gap: 0.5em; }

/* ==========================================================================
   Kursliste (sortierbare Tabelle)
   ========================================================================== */

.btk-kursliste {
  width: 100%;
  border-collapse: collapse;
  margin-block: 1.5rem;
}

.btk-kursliste th,
.btk-kursliste td {
  padding: 0.6em 0.8em;
  text-align: left;
  border-bottom: 1px solid var(--btk-border);
  vertical-align: top;
}

.btk-kursliste th a {
  color: inherit;
  text-decoration: none;
  font-weight: 700;
}

.btk-kursliste th a:hover { text-decoration: underline; }

.btk-hinweis {
  padding: 1rem;
  background: var(--btk-bg-muted);
  border-radius: var(--btk-radius);
}

.btk-hinweis--platzhalter {
  border: 1px dashed var(--btk-border);
  background: transparent;
  color: var(--btk-muted);
}

@media (max-width: 640px) {
  .btk-kursliste thead { display: none; }
  .btk-kursliste,
  .btk-kursliste tbody,
  .btk-kursliste tr,
  .btk-kursliste td { display: block; width: 100%; }
  .btk-kursliste tr {
    margin-block-end: 1rem;
    border: 1px solid var(--btk-border);
    border-radius: var(--btk-radius);
  }
  .btk-kursliste td { border-bottom: none; }
  .btk-kursliste td[data-label]:not([data-label=""])::before {
    content: attr(data-label);
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--btk-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
  }
}

/* ==========================================================================
   Kurs-Einzelseite
   ========================================================================== */

.btk-kurs-header { margin-block-end: 1rem; }
.btk-kurs-header .btk-badge { margin-inline-end: 0.5em; }

.btk-kurs-bild img { border-radius: var(--btk-radius); margin-block-end: 1.5rem; }

.btk-kurs-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
  gap: 2rem;
  align-items: start;
}

@media (max-width: 780px) {
  .btk-kurs-layout { grid-template-columns: 1fr; }
}

.btk-kurs-sidebar {
  background: var(--btk-bg-muted);
  border-radius: var(--btk-radius);
  padding: 1.25rem;
  position: sticky;
  top: 1rem;
}

.btk-kurs-preis { font-size: 1.25rem; }

.btk-dozenten-liste {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btk-dozenten-liste li { width: 120px; }
.btk-dozenten-liste a { text-decoration: none; color: inherit; display: block; text-align: center; }
.btk-dozenten-liste img { border-radius: var(--btk-radius); margin-block-end: 0.4em; }

#appform h2 { margin-block-start: 0; }

/* ==========================================================================
   Kalender (Monatsraster + gruppierte Terminliste)
   ========================================================================== */

.btk-kalender-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-block-end: 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.btk-kalender-raster {
  width: 100%;
  border-collapse: collapse;
  margin-block-end: 2rem;
  table-layout: fixed;
}

.btk-kalender-raster th {
  padding: 0.4em;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--btk-muted);
}

.btk-kalender-tag,
.btk-kalender-leer {
  height: 4rem;
  border: 1px solid var(--btk-border);
  vertical-align: top;
  padding: 0.3em;
}

.btk-kalender-tag a {
  display: block;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.btk-kalender-datum { font-weight: 600; }

.btk-kalender-tag--belegt { background: var(--btk-bg-muted); }

.btk-kalender-punkte { display: block; margin-block-start: 0.3em; }

.btk-punkt {
  display: inline-block;
  width: 0.5em;
  height: 0.5em;
  border-radius: 50%;
  background: var(--btk-badge-color, var(--btk-cat-fallback));
  margin-inline-end: 0.2em;
}

.btk-kalender-tagesliste {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.btk-kalender-tagesliste li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6em;
  padding: 0.5em 0;
  border-bottom: 1px solid var(--btk-border);
}

.btk-kalender-zeit,
.btk-kalender-ort { color: var(--btk-muted); font-size: 0.9em; }

/* ==========================================================================
   Ankuendigungsbanner
   ========================================================================== */

.btk-banner {
  background: var(--btk-ink);
  color: #fff;
}

.btk-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6em 0;
}

.btk-banner-inner p { margin: 0; }
.btk-banner a { color: #fff; text-decoration: underline; }

.btk-banner-schliessen {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.2em 0.4em;
  flex-shrink: 0;
}

.btk-banner-schliessen:hover { opacity: 0.8; }

/* ==========================================================================
   Footer
   ========================================================================== */

.btk-footer {
  background: var(--btk-bg-muted);
  margin-block-start: 2rem;
  padding-block: 2rem;
}

.btk-footer-kontakt { margin-block-end: 1.5rem; }
.btk-footer-kontakt p { margin: 0.3em 0; }

/* ==========================================================================
   Karten-Liste (Fortbildungen, Veranstaltungen)
   ========================================================================== */

.btk-karten-liste {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.btk-karte {
  border: 1px solid var(--btk-border);
  border-radius: var(--btk-radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}

.btk-karte img { border-radius: var(--btk-radius); margin-block-end: 0.5em; }
.btk-karte h2 { margin: 0; font-size: 1.15rem; }
.btk-karte h2 a { color: inherit; text-decoration: none; }
.btk-karte-meta { color: var(--btk-muted); font-size: 0.9em; margin: 0; }

/* ==========================================================================
   Dozent:innen-Archiv
   ========================================================================== */

.btk-dozenten-archiv {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1.5rem;
}

.btk-dozenten-archiv a { text-decoration: none; color: inherit; display: block; text-align: center; }
.btk-dozenten-archiv img { border-radius: var(--btk-radius); margin-block-end: 0.5em; width: 100%; height: auto; }
.btk-dozenten-archiv .btk-funktion { display: block; font-size: 0.85em; color: var(--btk-muted); }

/* ==========================================================================
   Sonstige Listen
   ========================================================================== */

.btk-liste-einfach { margin: 0.5rem 0 1.5rem; padding-inline-start: 1.25rem; }
.btk-liste-einfach li { margin-block-end: 0.3em; }

.btk-engagements { list-style: none; margin: 1rem 0; padding: 0; }
.btk-engagements li { padding: 0.4em 0; border-bottom: 1px solid var(--btk-border); }

.btk-startet-bald { margin-block: 1.5rem; }

/* ==========================================================================
   Startseite: Hero
   ========================================================================== */

.btk-hero {
  background: var(--btk-bg-muted);
  padding-block: 3rem;
  margin-block-end: 2rem;
}

.btk-hero h1 { margin-block-start: 0; }
.btk-hero-text { max-width: 60ch; }

.btk-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block: 1.5rem 0.5rem;
}

/* ==========================================================================
   Startseite: "Naechste Termine" (Card-Reihe, horizontal scrollbar)
   ========================================================================== */

.btk-naechste-termine { margin-block: 2rem; }

.btk-termin-karten {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0 0 0.5rem;
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x proximity;
}

.btk-termin-karte {
  flex: 0 0 260px;
  scroll-snap-align: start;
  border: 1px solid var(--btk-border);
  border-radius: var(--btk-radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}

.btk-termin-karte h3 { margin: 0.3em 0 0; font-size: 1.05rem; }
.btk-termin-karte h3 a { color: inherit; text-decoration: none; }

.btk-termin-karte-aktionen {
  margin-block-start: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  padding-block-start: 0.5em;
}

.btk-termin-karte-aktionen .btk-button {
  font-size: 0.85rem;
  padding: 0.5em 0.9em;
}


/* ==========================================================================
   Anfahrt (page-anfahrt.php)
   ========================================================================== */

.btk-anfahrt-intro {
  font-size: 1.05rem;
  max-width: 60ch;
}

.btk-osm-embed {
  margin: 1.5rem 0 2rem;
}

.btk-osm-embed iframe {
  display: block;
  width: 100%;
  max-width: 100%;
}

.btk-osm-embed-link {
  margin: 0.4em 0 0;
  font-size: 0.9rem;
}

.btk-anfahrt-section {
  margin-block: 2rem;
  padding-block-start: 1.5rem;
  border-top: 1px solid var(--btk-border);
}

.btk-anfahrt-section:first-of-type {
  border-top: none;
  padding-block-start: 0;
}

.btk-anfahrt-liste {
  padding-inline-start: 1.2em;
}

.btk-anfahrt-liste li {
  margin-block-end: 0.4em;
}

.btk-anfahrt-kontakt address {
  font-style: normal;
}

.btk-table-scroll {
  overflow-x: auto;
  margin: 1rem 0;
}

.btk-anfahrt-tabelle {
  width: 100%;
  border-collapse: collapse;
  min-width: 420px;
}

.btk-anfahrt-tabelle th,
.btk-anfahrt-tabelle td {
  text-align: left;
  padding: 0.5em 0.75em;
  border-bottom: 1px solid var(--btk-border);
}

.btk-anfahrt-tabelle thead th {
  border-bottom-width: 2px;
}


/* ==========================================================================
   Footer Social Media Icons
   ========================================================================== */

.btk-footer-social {
  list-style: none;
  display: flex;
  gap: 0.75rem;
  margin: 1rem 0;
  padding: 0;
}

.btk-footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  color: var(--btk-ink);
  background: var(--btk-bg-muted);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.btk-footer-social a:hover,
.btk-footer-social a:focus-visible {
  background: var(--btk-ink);
  color: var(--btk-bg, #ffffff);
}

.btk-social-icon {
  display: block;
}


/* ==========================================================================
   Hero mit Hintergrundbild (front-page.php)
   ========================================================================== */

.btk-hero--bild {
  position: relative;
  min-height: clamp(320px, 46vw, 520px);
  padding-block: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
}

.btk-hero--bild::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(25, 23, 28, 0.5), rgba(25, 23, 28, 0.6));
}

.btk-hero--bild .btk-hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  padding-block: 2.5rem;
  color: #ffffff;
}

.btk-hero--bild h1 {
  color: #ffffff;
  font-size: clamp(1.75rem, 4.5vw, 3.25rem);
  line-height: 1.15;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.55);
}

.btk-hero--bild .btk-hero-text {
  color: #ffffff;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
}

.btk-hero--bild .btk-button--ghost {
  color: #ffffff;
  border-color: #ffffff;
}

.btk-hero--bild .btk-button--ghost:hover {
  background: #ffffff;
  color: var(--btk-ink);
}

.btk-hero--align-oben .btk-hero-inner {
  justify-content: flex-start;
}

.btk-hero--align-oben-mitte .btk-hero-inner {
  justify-content: flex-start;
  padding-block-start: 4.5rem;
}

.btk-hero--align-halb-unten .btk-hero-inner {
  justify-content: flex-end;
  padding-block-end: 4.5rem;
}

.btk-hero--align-unten .btk-hero-inner {
  justify-content: flex-end;
}

@media (max-width: 640px) {
  .btk-hero--align-oben-mitte .btk-hero-inner,
  .btk-hero--align-halb-unten .btk-hero-inner {
    padding-block: 2rem;
  }
}


/* ==========================================================================
   Footer Guetesiegel/QM-Siegel
   ========================================================================== */

.btk-footer-siegel {
  margin: 1rem 0;
}

.btk-footer-siegel img {
  max-height: 64px;
  width: auto;
  display: block;
}

/* ==========================================================================
   Header: Menueband mit Logo/Titel + Hauptnavigation
   ========================================================================== */

.btk-header {
  background: var(--btk-bg);
  border-bottom: 1px solid var(--btk-border);
}

.btk-header-brand-row {
  display: flex;
  align-items: center;
  padding-block: 1.25rem;
}

.btk-header-brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.btk-header-brand .custom-logo-link {
  display: inline-flex;
  align-items: center;
}

.btk-header-brand img.custom-logo {
  display: block;
  height: auto;
  max-height: clamp(56px, 7vw, 120px);
  width: auto;
  max-width: 100%;
}

.btk-site-title {
  margin: 0;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  line-height: 1.2;
}

.btk-site-title a {
  color: var(--btk-ink);
  text-decoration: none;
  font-weight: 700;
}

.btk-nav {
  background: var(--btk-bg-muted);
  border-top: 1px solid var(--btk-border);
}

.btk-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.75rem;
  margin: 0;
  padding-block: 0.75rem;
}

.btk-nav a {
  display: inline-block;
  padding: 0.4em 0.1em;
  color: var(--btk-ink);
  text-decoration: none;
  font-weight: 600;
}

.btk-nav a:hover,
.btk-nav a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.btk-nav .current-menu-item > a,
.btk-nav .current_page_item > a {
  text-decoration: underline;
  text-underline-offset: 0.25em;
  text-decoration-thickness: 2px;
}

@media (max-width: 640px) {
  .btk-header-brand-row {
    padding-block: 1rem;
  }

  .btk-nav ul {
    gap: 0.5rem 1rem;
  }
}

/* ==========================================================================
   Hero-Variante fuer alle Seiten ausser der Startseite (btk_page_hero())
   ========================================================================== */

.btk-hero--seite {
  padding-block: 2rem;
  margin-block-end: 2rem;
}

.btk-hero--seite h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
}

.btk-hero--seite.btk-hero--bild {
  min-height: clamp(160px, 24vw, 300px);
}

.btk-hero--seite.btk-hero--bild h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
}