/* ---------- Rhythmusfeuer Intervalltraining ---------- */
.rf-iv .rf-quiz__start { align-items: stretch; }
.rf-iv .rf-quiz__start-bild { align-items: flex-end; }
.rf-iv__kennen-titel { margin: 1em 0 .5em; }
.rf-iv__kennen { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 1.2em; }
.rf-iv__probe, .rf-iv__mini {
	font: inherit; font-weight: 700; font-size: .95rem; color: var(--rf-blau); cursor: pointer;
	background: var(--rf-mintweiss); border: 2px solid var(--rf-blau); border-radius: 999px; padding: 6px 14px;
	transition: background .15s, transform .1s;
}
.rf-iv__probe:hover, .rf-iv__mini:hover { background: var(--rf-hellgruen-2); }
.rf-iv__probe:active, .rf-iv__mini:active { transform: translateY(2px); }
.rf-iv__probe.is-spielt { background: var(--rf-gruen); border-color: var(--rf-gruen); color: #fff; }
.rf-iv__tipp { font-size: .88rem; color: var(--rf-grau); margin: .6em 0 0; }

.rf-iv__hoeren { display: flex; justify-content: center; margin: 4px 0 22px; }
.rf-iv__play {
	display: inline-flex; align-items: center; gap: 14px; cursor: pointer;
	font-family: var(--rf-font-head); font-weight: 800; text-transform: uppercase; letter-spacing: .04em; font-size: 1.4rem;
	color: #fff; background: var(--rf-rot); border: 0; border-radius: 999px; padding: 14px 30px 14px 16px;
	box-shadow: 0 5px 0 var(--rf-rot-dunkel, #a51b1a); transition: transform .1s, box-shadow .1s;
}
.rf-iv__play:hover { transform: translateY(-2px); box-shadow: 0 7px 0 var(--rf-rot-dunkel, #a51b1a); }
.rf-iv__play:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--rf-rot-dunkel, #a51b1a); }
.rf-iv__play-icon { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; background: #fff; color: var(--rf-rot); padding-left: 3px; }
.rf-iv__play.is-spielt .rf-iv__play-icon { animation: rf-iv-puls .6s ease-in-out infinite alternate; }
@keyframes rf-iv-puls { to { transform: scale(1.15); } }

.rf-iv__antworten { grid-template-columns: repeat(4, 1fr); }
.rf-iv__antworten .rf-quiz__antwort { min-height: 58px; padding: 10px 12px; font-size: 1rem; }
.rf-iv__antworten .rf-quiz__buchstabe { width: 32px; height: 32px; font-size: 1.05rem; }
@media (max-width: 760px) { .rf-iv__antworten { grid-template-columns: 1fr 1fr; } }

.rf-iv__notenbox { background: #fff; border-radius: var(--rf-radius-s); padding: 6px 10px; margin: 0 0 12px; max-width: 300px; color: #000; }
.rf-iv__noten { display: block; width: 100%; height: auto; }
.rf-iv__vergleich { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.rf-iv__link { align-self: center; font-weight: 800; }
@media (max-width: 620px) {
	.rf-iv__play { font-size: 1.2rem; }
	.rf-iv__kennen { gap: 6px; }
}

/* Expertenmodus: Oktaven wählen */
.rf-iv__oktaven { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 0 0 12px; }
.rf-iv__oktaven-titel { font-weight: 800; margin-right: 4px; }
.rf-iv__oktave { font: inherit; font-weight: 700; padding: .35em .9em; border-radius: 999px; border: 2px solid var(--rf-linie); background: #fff; color: var(--rf-blau); cursor: pointer; }
.rf-iv__oktave.is-an { background: var(--rf-blau); border-color: var(--rf-blau); color: #fff; }
.rf-iv__oktave.is-richtig { background: var(--rf-gruen); border-color: var(--rf-gruen); color: #fff; }
.rf-iv__oktave.is-falsch { background: var(--rf-rot); border-color: var(--rf-rot); color: #fff; }
.rf-iv__noten path { }