/* Ein gespielter Zug ohne Ton, für Seiten, auf denen jemand das Spiel noch
   nicht kennt. Gebaut wird er von demo.js in einem Feld mit festen
   Koordinaten (340 x 372), das sich als Ganzes auf die Breite skaliert. So
   bleiben Karten, Ablagestellen und Flugbahn auf jedem Gerät deckungsgleich.

   Die Farben sind die der App: Jahrzehnt-Töne, Schallplatte und Richtig-Grün
   schalten im dunklen Modus nicht um, Grund und Schrift schon. */

@font-face {
  /* Space Grotesk 700, nur die Ziffern (1,8 kB). Die Jahre sind das
     Markenzeichen der Karten; Titel und Interpret nehmen die Systemschrift. */
  font-family: "HM Years";
  src: url("fonts/space-grotesk-700-digits.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
  unicode-range: U+0030-0039;
}

.demo { padding: 22px 14px 18px; }
.demo .kicker {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.dm-viewport {
  --dm-years: "HM Years", "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
  --dm-cream: #faf4ec;
  --dm-ok: #008e21;
  --dm-shadow: rgba(0, 0, 0, 0.15);
  --dm-slot: rgba(37, 26, 21, 0.3);
  --dm-slot-active: rgba(0, 143, 150, 0.14);
  position: relative;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  aspect-ratio: 340 / 372;
  overflow: hidden;
}
@media (prefers-color-scheme: dark) {
  .dm-viewport {
    --dm-shadow: rgba(0, 0, 0, 0.55);
    --dm-slot: rgba(243, 236, 228, 0.32);
    --dm-slot-active: rgba(53, 182, 189, 0.18);
  }
}

.dm-stage {
  position: absolute;
  left: 0;
  top: 0;
  width: 340px;
  height: 372px;
  transform-origin: 0 0;
  transform: scale(var(--dm-scale, 1));
  transition: opacity 0.45s ease;
}
.dm-stage.is-out { opacity: 0; }
/* Zwischen zwei Durchläufen springt alles ohne Übergang auf den Anfang. */
.dm-stage.dm-instant,
.dm-stage.dm-instant * { transition: none !important; animation: none !important; }

/* Zeitleiste ------------------------------------------------------------ */

.dm-card {
  position: absolute;
  top: 20px;
  width: 100px;
  height: 141px;
  transition: transform 0.45s cubic-bezier(0.3, 0, 0.2, 1);
}
.dm-c1 { left: 52px; }
.dm-c2 { left: 188px; }
.has-room .dm-c1 { transform: translateX(-40px); }
.has-room .dm-c2 { transform: translateX(40px); }
/* Beim Rückweg erst, wenn die Handkarte die Zeitleiste verlassen hat. */
.is-returning .dm-c1,
.is-returning .dm-c2 { transition-delay: 0.25s; }

.dm-face {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 3px 3px 0 var(--dm-shadow);
  color: var(--dm-cream);
  transition: box-shadow 0.35s ease;
}
.dm-decade { background: var(--c); }
.dm-title {
  position: absolute;
  left: 9px;
  right: 9px;
  top: 8px;
  font-size: 9.5px;
  line-height: 1.18;
  font-weight: 700;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.dm-year {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  text-align: center;
  font-family: var(--dm-years);
  font-weight: 700;
  font-size: 31px;
  letter-spacing: -0.02em;
  line-height: 1;
}
.dm-artist {
  position: absolute;
  left: 9px;
  right: 9px;
  bottom: 8px;
  font-size: 8.5px;
  font-weight: 600;
  opacity: 0.92;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dm-slot {
  position: absolute;
  top: 20px;
  width: 24px;
  height: 141px;
  border: 2px dashed var(--dm-slot);
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--dm-slot);
  font: 700 16px/1 -apple-system, BlinkMacSystemFont, sans-serif;
  opacity: 0;
  transition: opacity 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}
.dm-s0 { left: 22px; }
.dm-s1 { left: 158px; }
.dm-s2 { left: 294px; }
.has-slots .dm-slot { opacity: 1; }
.slot-active .dm-s1 {
  background: var(--dm-slot-active);
  border-style: solid;
  border-color: var(--accent);
  color: var(--accent);
}

.dm-ends {
  position: absolute;
  left: 12px;
  right: 12px;
  top: 172px;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
}

/* Die Handkarte --------------------------------------------------------- */

.dm-hand {
  left: 120px;
  z-index: 3;
  perspective: 700px;
  transform: translate(0, 193.5px) scale(1.08);
}
.is-lifted .dm-hand {
  transform: translate(0, 180px) scale(1.15) rotate(-3deg);
  transition-duration: 0.35s;
}
.is-dragging .dm-hand {
  transform: translate(0, 0) scale(1);
  transition-duration: 1.05s;
  transition-timing-function: cubic-bezier(0.5, 0, 0.15, 1);
}
.is-returning .dm-hand {
  transition-duration: 0.9s;
  transition-timing-function: cubic-bezier(0.5, 0, 0.15, 1);
}
.is-lifted .dm-hand .dm-face { box-shadow: 7px 9px 0 var(--dm-shadow); }

.dm-flip {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.3, 0, 0.2, 1);
}
.is-flipped .dm-flip { transform: rotateY(180deg); }
.is-returning .dm-flip { transition-delay: 0.15s; }
.dm-flip .dm-face { -webkit-backface-visibility: hidden; backface-visibility: hidden; }
.dm-front { transform: rotateY(180deg); }
.dm-back { background: #2a221e; }
.dm-back svg { display: block; width: 100%; height: 100%; }

/* 33⅓ Umdrehungen je Minute: 1,8 Sekunden je Runde. */
.dm-spin {
  transform-box: view-box;
  transform-origin: 50px 64.86px;
  animation: dm-spin 1.8s linear infinite;
  animation-play-state: paused;
}
.is-playing .dm-spin { animation-play-state: running; }
@keyframes dm-spin { to { transform: rotate(360deg); } }

.dm-ok {
  position: absolute;
  inset: 0;
  background: var(--dm-ok);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  transition: opacity 0.5s ease;
}
.dm-ok .dm-year { position: static; transform: none; font-size: 33px; }
.dm-check {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--dm-cream);
  display: grid;
  place-items: center;
}
.dm-check svg { width: 14px; height: 14px; }
.dm-verdict { font-size: 9.5px; font-weight: 700; }
.is-settled .dm-ok { opacity: 0; }

.dm-touch {
  position: absolute;
  left: 66%;
  top: 82%;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  border-radius: 50%;
  background: rgba(250, 244, 236, 0.35);
  border: 2px solid rgba(250, 244, 236, 0.75);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  opacity: 0;
  transform: scale(1.5);
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 2;
}
.is-lifted .dm-touch { opacity: 1; transform: scale(1); }

/* Die Musik, die hier liefe: Balken in den sieben Jahrzehnt-Tönen hinter
   der Platte. Bewusst keine Wellenform, die nach einem Titel aussieht. */
.dm-bars {
  position: absolute;
  left: 12px;
  width: 316px;
  top: 246px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  opacity: 1;
  transition: opacity 0.4s ease;
}
.dm-bar {
  width: 5px;
  height: 100%;
  border-radius: 3px;
  background: var(--c);
  transform: scaleY(0.1);
  opacity: 0.85;
}
.is-playing .dm-bar { animation: dm-eq var(--dur) ease-in-out var(--delay) infinite alternate; }
@keyframes dm-eq {
  from { transform: scaleY(0.12); }
  to { transform: scaleY(var(--peak)); }
}
.is-placed .dm-bars { opacity: 0; }
.is-returning .dm-bars { transition-delay: 0.5s; }

/* Auflösung ------------------------------------------------------------- */

.dm-count {
  position: absolute;
  left: 0;
  right: 0;
  top: 248px;
  text-align: center;
  font-family: var(--dm-years);
  font-weight: 700;
  font-size: 72px;
  line-height: 1;
  color: var(--ink);
  opacity: 0;
}
.dm-count.pop { animation: dm-pop 0.7s ease-out forwards; }
@keyframes dm-pop {
  0% { opacity: 0; transform: scale(1.45); }
  25% { opacity: 1; transform: scale(1); }
  75% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.9); }
}

/* Der Strahlenkranz der richtigen Karte. Außen Auftritt, innen Drehung,
   weil eine Animation die Skalierung sonst überschriebe. */
.dm-rays {
  position: absolute;
  left: 10px;
  top: -69.5px;
  width: 320px;
  height: 320px;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.5s ease, transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.dm-rays::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: repeating-conic-gradient(rgba(0, 142, 33, 0.2) 0 9deg, transparent 9deg 22.5deg);
  -webkit-mask: radial-gradient(circle, #000 30%, transparent 70%);
  mask: radial-gradient(circle, #000 30%, transparent 70%);
  animation: dm-spin 24s linear infinite;
}
.is-correct .dm-rays { opacity: 1; transform: scale(1); }

.dm-pill {
  position: absolute;
  left: 50%;
  top: 252px;
  transform: translate(-50%, 10px);
  white-space: nowrap;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 3px 3px 0 var(--dm-shadow);
  padding: 8px 14px;
  text-align: center;
  font-size: 13px;
  line-height: 1.25;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.dm-pill b { display: block; font-size: 14px; }
.dm-pill span { color: var(--muted); }
.is-correct .dm-pill { opacity: 1; transform: translate(-50%, 0); transition-delay: 0.35s; }

/* Das Kartenraster der Challenge: zehn Felder, das erste ist getroffen. */
.dm-grid {
  position: absolute;
  left: 0;
  right: 0;
  top: 244px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.dm-grid b {
  flex-basis: 100%;
  text-align: center;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.dm-grid i {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  border: 2px solid var(--dm-slot);
}
.dm-grid i:first-of-type { transition: background-color 0.3s ease 0.6s, border-color 0.3s ease 0.6s; }
.show-grid .dm-grid { opacity: 1; transform: none; transition-delay: 0.2s; }
.show-grid .dm-grid i:first-of-type { background: var(--dm-ok); border-color: var(--dm-ok); }

/* Bildunterschrift ------------------------------------------------------ */

.dm-caption {
  max-width: 420px;
  margin: 12px auto 0;
  text-align: center;
}
.dm-dots { display: flex; justify-content: center; gap: 6px; margin-bottom: 8px; }
.dm-dots i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
  transition: background-color 0.3s ease, width 0.3s ease;
}
.dm-dots i.on { width: 18px; border-radius: 3px; background: var(--accent); }
.dm-text {
  min-height: 3.3em;
  font-size: 0.98rem;
  line-height: 1.55;
  font-weight: 600;
  margin: 0;
  transition: opacity 0.2s ease;
}
.dm-text.fading { opacity: 0; }