/* ---------------------------------------------------------------------------
   BannerTracker – Blog
   Ablage: ./app/css/blog.css

   Alles unter .bt-blog gescoped, damit nichts in base.css/landing.css
   hineinregiert. Die Variablen greifen zuerst auf die des Design-Systems zu
   und fallen nur zurück, wenn base.css sie (noch) nicht definiert –
   d.h. sobald du dort --accent o.ä. anders setzt, zieht der Blog mit.
--------------------------------------------------------------------------- */

.bt-blog {
  --bt-ink:        var(--color-text,     #e8f4f2);
  --bt-ink-soft:   var(--color-muted,    #9db4b8);
  --bt-bg:         var(--color-bg,       #0f2730);
  --bt-panel:      rgba(255, 255, 255, .04);
  --bt-panel-edge: rgba(140, 231, 202, .16);
  --bt-accent:     var(--color-accent,   #7fe3c0);
  --bt-accent-dim: rgba(127, 227, 192, .12);
  --bt-deep:       var(--color-deep,     #193742);

  --bt-radius:     14px;
  --bt-gap:        clamp(1.25rem, 3vw, 2rem);
  --bt-measure:    68ch;

  --bt-font-head:  var(--font-display, "Orbitron", "Azonix", system-ui, sans-serif);
  --bt-font-body:  var(--font-body, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif);

  color: var(--bt-ink);
  font-family: var(--bt-font-body);
}

/* --- Layout ------------------------------------------------------------- */

.bt-blog__wrap {
  width: min(1140px, 100% - 2.5rem);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.bt-blog__head {
  max-width: 46ch;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.bt-blog__eyebrow {
  font-family: var(--bt-font-head);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--bt-accent);
  margin: 0 0 .75rem;
}

.bt-blog__title {
  font-family: var(--bt-font-head);
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  letter-spacing: -.01em;
}

.bt-blog__lede {
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.65;
  color: var(--bt-ink-soft);
  margin: 0;
}

/* --- Kartenraster ------------------------------------------------------- */

.bt-blog__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 21rem), 1fr));
  gap: var(--bt-gap);
  list-style: none;
  margin: 0;
  padding: 0;
}

.bt-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .85rem;
  padding: 1.6rem;
  border: 1px solid var(--bt-panel-edge);
  border-radius: var(--bt-radius);
  background: var(--bt-panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}

.bt-card:hover,
.bt-card:focus-within {
  border-color: var(--bt-accent);
  background: rgba(127, 227, 192, .06);
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .bt-card { transition: border-color .2s ease; }
  .bt-card:hover, .bt-card:focus-within { transform: none; }
}

.bt-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .75rem;
  font-size: .78rem;
  color: var(--bt-ink-soft);
}

.bt-card__cat {
  font-family: var(--bt-font-head);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--bt-accent);
  background: var(--bt-accent-dim);
  border-radius: 999px;
  padding: .3rem .7rem;
}

.bt-card__title {
  font-family: var(--bt-font-head);
  font-size: 1.2rem;
  line-height: 1.3;
  margin: 0;
}

/* Ganze Karte klickbar, aber der Link bleibt der einzige Tab-Stop. */
.bt-card__link {
  color: inherit;
  text-decoration: none;
}

.bt-card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.bt-card__link:focus-visible::after {
  outline: 2px solid var(--bt-accent);
  outline-offset: 3px;
}

.bt-card__excerpt {
  margin: 0;
  font-size: .94rem;
  line-height: 1.6;
  color: var(--bt-ink-soft);
}

.bt-card__more {
  margin-top: auto;
  font-size: .85rem;
  font-weight: 600;
  color: var(--bt-accent);
}

/* --- Pagination --------------------------------------------------------- */

.bt-pager {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .5rem;
  margin-top: clamp(2rem, 5vw, 3.5rem);
}

.bt-pager a,
.bt-pager span {
  min-width: 2.6rem;
  padding: .55rem .8rem;
  text-align: center;
  border: 1px solid var(--bt-panel-edge);
  border-radius: 10px;
  text-decoration: none;
  color: var(--bt-ink-soft);
  font-size: .9rem;
}

.bt-pager a:hover { border-color: var(--bt-accent); color: var(--bt-accent); }

.bt-pager [aria-current="page"] {
  color: var(--bt-deep);
  background: var(--bt-accent);
  border-color: var(--bt-accent);
  font-weight: 700;
}

/* --- Artikel ------------------------------------------------------------ */

.bt-article {
  width: min(var(--bt-measure), 100% - 2.5rem);
  margin-inline: auto;
  padding-block: clamp(2rem, 6vw, 4rem);
}

.bt-crumbs {
  font-size: .82rem;
  color: var(--bt-ink-soft);
  margin-bottom: 1.5rem;
}

.bt-crumbs a { color: var(--bt-ink-soft); }
.bt-crumbs a:hover { color: var(--bt-accent); }
.bt-crumbs span { margin-inline: .4rem; opacity: .5; }

.bt-article__title {
  font-family: var(--bt-font-head);
  font-size: clamp(1.75rem, 4.5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -.01em;
  margin: 0 0 1rem;
  /* Verhindert einzelne Wörter in der letzten Zeile bei langen Titeln. */
  text-wrap: balance;
}

.bt-article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .75rem;
  font-size: .85rem;
  color: var(--bt-ink-soft);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--bt-panel-edge);
}

/* Fließtext: bewusst großzügige Zeilenhöhe, das sind Lesetexte. */
.bt-prose {
  font-size: 1.05rem;
  line-height: 1.75;
}

.bt-prose > * + * { margin-top: 1.35em; }

.bt-prose h2 {
  font-family: var(--bt-font-head);
  font-size: 1.45rem;
  line-height: 1.25;
  margin-top: 2.4em;
  color: var(--bt-ink);
}

.bt-prose h3 {
  font-family: var(--bt-font-head);
  font-size: 1.15rem;
  margin-top: 2em;
}

.bt-prose ul,
.bt-prose ol { padding-left: 1.4em; }
.bt-prose li + li { margin-top: .5em; }

.bt-prose a {
  color: var(--bt-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
}

.bt-prose strong { color: #fff; }

.bt-prose blockquote {
  margin-inline: 0;
  padding: 1rem 1.4rem;
  border-left: 3px solid var(--bt-accent);
  background: var(--bt-accent-dim);
  border-radius: 0 var(--bt-radius) var(--bt-radius) 0;
  color: var(--bt-ink);
  font-size: 1.02rem;
}

.bt-prose blockquote > * + * { margin-top: .8em; }

.bt-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: .94rem;
}

.bt-prose th,
.bt-prose td {
  padding: .7rem .8rem;
  border-bottom: 1px solid var(--bt-panel-edge);
  text-align: left;
}

.bt-prose th { font-family: var(--bt-font-head); font-size: .82rem; letter-spacing: .04em; }

.bt-prose img {
  width: 100%;
  height: auto;
  border-radius: var(--bt-radius);
}

.bt-prose figcaption {
  font-size: .82rem;
  color: var(--bt-ink-soft);
  margin-top: .6em;
}

/* Breite Tabellen dürfen scrollen, die Seite selbst nie. */
.bt-prose__scroll { overflow-x: auto; }

/* --- Abschluss-CTA ------------------------------------------------------ */

.bt-cta {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid var(--bt-panel-edge);
  border-radius: var(--bt-radius);
  background: var(--bt-panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.bt-cta h2 {
  font-family: var(--bt-font-head);
  font-size: 1.2rem;
  margin: 0 0 .6rem;
}

.bt-cta p {
  margin: 0 0 1.25rem;
  color: var(--bt-ink-soft);
  font-size: .95rem;
  line-height: 1.6;
}

.bt-cta__btn {
  display: inline-block;
  padding: .75rem 1.5rem;
  border-radius: 10px;
  background: var(--bt-accent);
  color: var(--bt-deep);
  font-weight: 700;
  text-decoration: none;
  transition: filter .2s ease;
}

.bt-cta__btn:hover { filter: brightness(1.1); }
.bt-cta__btn:focus-visible { outline: 2px solid var(--bt-accent); outline-offset: 3px; }

/* --- Weiterlesen -------------------------------------------------------- */

.bt-more {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: 2rem;
  border-top: 1px solid var(--bt-panel-edge);
}

.bt-more__head {
  font-family: var(--bt-font-head);
  font-size: .75rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--bt-ink-soft);
  margin: 0 0 1.25rem;
}

.bt-more__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}

.bt-more__list a {
  display: block;
  color: var(--bt-ink);
  text-decoration: none;
  font-weight: 600;
  line-height: 1.4;
}

.bt-more__list a:hover { color: var(--bt-accent); }
.bt-more__list small { display: block; color: var(--bt-ink-soft); font-weight: 400; margin-top: .2rem; }

/* --- Leerzustand -------------------------------------------------------- */

.bt-empty {
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--bt-ink-soft);
  border: 1px dashed var(--bt-panel-edge);
  border-radius: var(--bt-radius);
}

/* --- Hell-Modus, falls base.css das jemals anbietet --------------------- */

@media (prefers-color-scheme: light) {
  .bt-blog:not([data-theme="dark"]) {
    --bt-ink:        var(--color-text,  #12242b);
    --bt-ink-soft:   var(--color-muted, #4d6670);
    --bt-panel:      rgba(25, 55, 66, .035);
    --bt-panel-edge: rgba(25, 55, 66, .14);
    --bt-accent:     var(--color-accent, #0f7f63);
    --bt-accent-dim: rgba(15, 127, 99, .1);
  }
  .bt-blog:not([data-theme="dark"]) .bt-prose strong { color: #000; }
}

/* --- Erzwungene Hell-Variante: fuer den Blog-Teaser auf hellen Sektionen
   der Startseite (index.php), unabhaengig vom OS-Farbschema. Gleiche Werte
   wie oben im prefers-color-scheme-Block, nur ueber eine manuelle Klasse
   statt einer Media Query ausgeloest. --- */
.bt-blog.bt-blog--light {
  --bt-ink:        #12242b;
  --bt-ink-soft:   #4d6670;
  --bt-panel:      rgba(25, 55, 66, .035);
  --bt-panel-edge: rgba(25, 55, 66, .14);
  --bt-accent:     #0f7f63;
  --bt-accent-dim: rgba(15, 127, 99, .1);
}
.bt-blog.bt-blog--light .bt-prose strong { color: #000; }