/* ============================================================================
   Funktions-Slider — songintheair.app
   ----------------------------------------------------------------------------
   Chris (2026-09-14): 'statt hunderte screens untereinander lieber nen
   horizontalen slider mit den features.'

   Die Schiene scrollt IN ihrem eigenen Kasten und nie die Seite: kein
   negativer Rand, keine Breite ueber 100 %. Genau dieses Muster (negativer
   margin-inline an .screen-rail) war einer der Kandidaten fuer das seitliche
   Scrollen der Seite — hier wird es nicht wiederholt.
   Ohne JavaScript bleibt alles eine wischbare Reihe; slider.js legt nur
   Pfeile, Punkte und Tastatur darueber.
   ========================================================================= */

.features { min-width: 0; }

.features-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: clamp(1.6rem, 3.5vw, 2.4rem);
}
.features-head h2 { margin-bottom: 0; }
.features-head .lede { max-width: 44ch; }

.slider-nav { display: flex; gap: 0.6rem; flex: none; }
.slider-btn {
  width: 2.8rem; height: 2.8rem;
  border-radius: 50%;
  border: 1px solid var(--hairline);
  background: rgba(255,255,255,0.02);
  color: var(--pearl);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color .18s ease, background-color .18s ease, opacity .18s ease;
}
.slider-btn:hover { border-color: var(--neon); background: rgba(255,160,96,0.08); }
.slider-btn:focus-visible { outline: 2px solid var(--neon); outline-offset: 3px; border-radius: 50%; }
.slider-btn[disabled] { opacity: 0.35; cursor: default; border-color: var(--hairline-soft); background: none; }

.slider {
  position: relative;
  width: 100%;
  border-radius: 1rem;
}
.slider:focus-visible { outline: 2px solid var(--neon); outline-offset: 6px; }

.slider-track {
  list-style: none;
  margin: 0;
  padding: 0.4rem 0 1.4rem;
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.slider-track::-webkit-scrollbar { display: none; }

/* Kantenverlauf rechts, solange noch etwas kommt. is-end setzt slider.js. */
.slider::after {
  content: '';
  position: absolute; top: 0; right: 0; bottom: 0;
  width: 3.5rem;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(5,2,8,0), var(--ink));
  transition: opacity .2s ease;
}
.slider.is-end::after { opacity: 0; }

.slide {
  flex: 0 0 auto;
  width: min(20rem, 78vw);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
}
.slide-wide { width: min(40rem, 88vw); }

.slide-media { margin: 0 0 1.3rem; }
.slide-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: var(--shot);
  object-fit: cover;
  border-radius: 1.5rem;
  border: 1px solid var(--hairline-soft);
  box-shadow: 0 1.6rem 3.4rem rgba(0,0,0,0.55);
  background: linear-gradient(155deg, var(--royal) 0%, var(--eclipse) 60%, var(--ink) 100%);
}
.slide-wide .slide-media img { aspect-ratio: 1180 / 820; border-radius: 1.1rem; }

.slide-kicker {
  margin: 0 0 0.45rem;
  font-size: 0.7rem;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--neon);
}
.slide-copy h3 { font-size: 1.45rem; margin-bottom: 0.5rem; }
.slide-copy p:not(.slide-kicker) { margin: 0; color: var(--mist); font-size: 0.96rem; max-width: 34ch; }
.slide-wide .slide-copy p:not(.slide-kicker) { max-width: 52ch; }

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 0.45rem;
  margin-top: 0.4rem;
}
.slider-dots span {
  width: 0.45rem; height: 0.45rem;
  border-radius: 99px;
  background: var(--hairline-soft);
  transition: width .2s ease, background-color .2s ease;
}
.slider-dots span.is-active { width: 1.4rem; background: var(--neon); }

@media (max-width: 40rem) {
  .features-head { display: block; }
  .slider-nav { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .slider-btn, .slider::after, .slider-dots span { transition: none; }
}