/* KMT Stem-Separation Demo – Player-Stile
   Nachbau der MOTU-Demo (motu.com/en-us/products/software/dp/), angepasst
   für klemm-music.de. Alle Klassen sind mit "kmt-stem-" gepräfixt, damit
   nichts mit dem Theme kollidiert. */

.kmt-stem-demo {
  --kmt-stem-bg: #222026;
  --kmt-stem-fg: #ffffff;
  --kmt-stem-muted: #c9c7cf;
  --kmt-stem-accent: #598ee3;
  --kmt-stem-poster-bg: #162635;
  --kmt-stem-gradient: linear-gradient(90deg, #5b7ff5 0%, #c53ad9 100%);
  --kmt-stem-mix-h: 120px;
  --kmt-stem-track-h: 70px;
  background: var(--kmt-stem-bg);
  color: var(--kmt-stem-fg);
  /* Maße wie die .module-Blöcke des Themes (klemm-music): dessen Variablen,
     mit Fallbacks für den Standalone-Prototyp */
  padding: var(--global--section-margin, 54px) var(--global--component-padding, 18px);
  width: auto;                   /* nicht 100%: Theme setzt negative Seitenränder */
  max-width: none;
  font-family: "Roboto", "Helvetica Neue", Arial, sans-serif;
  box-sizing: border-box;
}
.kmt-stem-demo *, .kmt-stem-demo *::before, .kmt-stem-demo *::after { box-sizing: inherit; }
/* Theme-Regel ".product-description__long .module.wysiwyg .container > *" begrenzt
   Inhalte auf 700px – für die Demo aufheben, falls sie im Modul bleibt */
.module.wysiwyg .container > .kmt-stem-demo,
.module.text-text .wysiwyg > .kmt-stem-demo { max-width: none; margin-left: 0; }
/* Fallback, wenn kein .module-Vorfahr existiert: aus dem zentrierten Container ausbrechen */
.kmt-stem-demo--bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

/* Einleitung */
.kmt-stem-intro {
  max-width: var(--container--width--wider, 1254px);   /* .container--wider des Themes */
  margin: 0 auto 40px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 32px 48px;
  align-items: start;
}
.kmt-stem-intro__kicker {
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--kmt-stem-muted);
  margin: 0 0 12px;
}
.kmt-stem-intro__title {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.05;
  font-weight: 700;
  margin: 0;
}
.kmt-stem-intro__text {
  font-size: 17px;
  line-height: 1.6;
  margin: 0;
}
.kmt-stem-intro__text a { color: var(--kmt-stem-accent); }
.kmt-stem-intro__hint {
  margin-top: 14px;
  font-size: 15px;
  color: var(--kmt-stem-muted);
}

/* Raster der Beispiele */
.kmt-stem-grid {
  max-width: var(--container--width--wider, 1254px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 40px 32px;
}

/* Ein Beispiel (Spalte) */
.kmt-stem-example__head {
  text-align: center;
  margin-bottom: 28px;
}
.kmt-stem-example__nr {
  display: inline-block;
  font-size: 16px;
  font-weight: 700;
  padding-bottom: 8px;
  margin: 0;
  border-bottom: 5px solid;
  border-image: var(--kmt-stem-gradient) 1;
}
.kmt-stem-example__genre {
  font-size: clamp(24px, 2.2vw, 30px);
  font-weight: 700;
  line-height: 1.15;
  margin: 14px 0 6px;
}
.kmt-stem-example__credit {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 15px;
  color: var(--kmt-stem-muted);
}

/* Quellen-Hinweis (ⓘ) */
.kmt-stem-info {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 20px; height: 20px;
  border: 0; border-radius: 50%;
  padding: 0;
  background: var(--kmt-stem-muted);
  color: var(--kmt-stem-bg);
  font: 700 12px/1 Georgia, serif;
  cursor: pointer;
}
.kmt-stem-info:hover, .kmt-stem-info:focus-visible { background: var(--kmt-stem-fg); outline: none; }
.kmt-stem-info__blurb {
  position: absolute;
  right: 0; top: calc(100% + 8px);
  width: max-content; max-width: 260px;
  background: #fff; color: #0d0d0d;
  font: 400 12px/1.4 "Roboto", "Helvetica Neue", Arial, sans-serif;
  text-align: left;
  padding: 6px 10px;
  border-radius: 3px;
  z-index: 20;
  opacity: 0; visibility: hidden;
  transition: opacity .2s, visibility .2s;
}
.kmt-stem-info.is-open .kmt-stem-info__blurb { opacity: 1; visibility: visible; }

/* Spur (Beschriftung + Player) */
.kmt-stem-track { margin-bottom: 22px; }
.kmt-stem-track__label {
  margin: 0 0 8px;
  font-size: 15px;
}

/* Der Player */
.kmt-stem-player {
  position: relative;
  width: 100%;
  height: var(--kmt-stem-track-h);
  border-radius: 8px;
  overflow: hidden;
  background: var(--kmt-stem-poster-bg);
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.kmt-stem-track--mix .kmt-stem-player { height: var(--kmt-stem-mix-h); }
.kmt-stem-player__wave,
.kmt-stem-player__progress img {
  display: block;
  width: 100%; height: 100%;
  object-fit: fill;          /* wie bei MOTU: Bild wird auf Playerbreite gestaucht */
  pointer-events: none;
}
.kmt-stem-player__progress {
  position: absolute; inset: 0;
  clip-path: inset(0 100% 0 0);
  pointer-events: none;
  background: var(--kmt-stem-accent);
  visibility: hidden;
}
.kmt-stem-player.is-playing .kmt-stem-player__progress { visibility: visible; }

.kmt-stem-player__btn {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 56px; height: 56px;
  border: 0; padding: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--kmt-stem-fg);
  cursor: pointer;
  display: grid; place-items: center;
  transition: color .2s;
}
.kmt-stem-player__btn:hover, .kmt-stem-player__btn:focus-visible { color: var(--kmt-stem-accent); outline: none; }
.kmt-stem-player__btn:focus-visible { box-shadow: 0 0 0 2px var(--kmt-stem-accent); }
.kmt-stem-player.has-error { opacity: .5; cursor: not-allowed; }
.kmt-stem-player__btn svg {
  width: 28px; height: 28px;
  fill: currentColor;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,.4));
}
.kmt-stem-player__btn .kmt-stem-icon--pause { display: none; }
.kmt-stem-player.is-playing .kmt-stem-icon--play { display: none; }
.kmt-stem-player.is-playing .kmt-stem-icon--pause { display: block; }

/* Ladezustand: Play-Icon blinkt */
.kmt-stem-player.is-loading .kmt-stem-player__btn {
  color: var(--kmt-stem-accent);
  animation: kmt-stem-blink 1.5s linear infinite;
}
@keyframes kmt-stem-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: .25; }
}

/* Responsiv */
@media (max-width: 1199px) {
  .kmt-stem-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 899px) {
  .kmt-stem-intro { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 639px) {
  .kmt-stem-demo { padding: var(--global--section-margin, 36px) var(--global--component-padding, 18px); }
  .kmt-stem-grid { grid-template-columns: 1fr; gap: 40px; }
  .kmt-stem-demo { --kmt-stem-mix-h: 96px; --kmt-stem-track-h: 60px; }
}
@media (prefers-reduced-motion: reduce) {
  .kmt-stem-player.is-loading .kmt-stem-player__btn { animation: none; }
}