/* ------------------------------------------------------- /kff (Präfix kf-)
   Hub für den Testteil KFF: Untertest-Kacheln mit Summen-Kachel, Zeitstrahl
   mit Fahrplan, Regel-Liste mit Folgen, Balkengrafik „Sekunden pro Aufgabe“. */

.r3 { --kf-auf: #fff; }
@media (prefers-color-scheme: dark) { .r3 { --kf-auf: #1b1815; } }

.r-band .kf-mitte { text-align: center; max-width: 700px; margin-left: auto; margin-right: auto; }
.kf-schmal { max-width: 712px; margin: 0 auto; }
.r-band .kf-klein { font-size: 15.5px; line-height: 1.6; color: var(--r-leise); }
.kf-bildtitel { display: block; margin: 0 0 20px; text-align: center; font: 700 12.5px/1.3 "Work Sans", sans-serif; letter-spacing: 0.14em; text-transform: uppercase; color: var(--akzent); }
.kf-nur { display: inline-block; padding: 4px 9px; border-radius: 999px; background: var(--akzent-hauch); color: var(--akzent-tief); font: 700 10.5px/1.2 "Work Sans", sans-serif; letter-spacing: 0.08em; text-transform: uppercase; white-space: nowrap; }

/* Kacheln der Untertests */
.kf-kacheln { list-style: none; margin: 34px 0 36px; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.r-band .kf-kachel { display: flex; flex-direction: column; padding: 24px 24px 20px; border-radius: 22px; background: var(--r-weiss); box-shadow: 0 1px 2px rgba(60, 45, 30, 0.05), 0 18px 40px -28px rgba(60, 45, 30, 0.35); font-size: 16px; line-height: 1.55; }
.kf-k-kopf { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.kf-k-sym { width: 46px; height: 46px; flex: none; display: grid; place-items: center; border-radius: 14px; background: var(--akzent); color: var(--kf-auf); }
.kf-k-sym .sym-text { font-size: 14px; }
.kf-k-nr { margin-left: auto; order: 3; font: 800 30px/1 "Manrope", sans-serif; letter-spacing: -0.04em; color: transparent; -webkit-text-stroke: 1.3px var(--akzent); }
.r-band .kf-kachel h3 { margin: 0 0 6px; font-size: 21px; line-height: 1.25; }
.r-band .kf-kachel h3 a { color: var(--r-kopf); font-weight: inherit; text-decoration: none; }
.r-band .kf-kachel h3 a:hover { color: var(--akzent-tief); text-decoration: underline; text-decoration-color: var(--akzent); text-underline-offset: 4px; }
.r-band .kf-kachel > p { margin: 0 0 18px; font-size: 16px; line-height: 1.55; }
.kf-k-werte { margin: auto 0 0; padding: 14px 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; border-top: 1px solid var(--r-linie); }
.kf-k-werte div { min-width: 0; }
.kf-k-werte dt { font: 700 10.5px/1.2 "Work Sans", sans-serif; letter-spacing: 0.1em; text-transform: uppercase; color: var(--r-leise); }
.kf-k-werte dd { margin: 5px 0 0; font: 800 22px/1.1 "Manrope", sans-serif; letter-spacing: -0.03em; color: var(--r-kopf); white-space: nowrap; font-variant-numeric: tabular-nums; }
.kf-k-werte small { display: block; margin-top: 3px; font: 400 12.5px/1.3 "Work Sans", sans-serif; letter-spacing: 0; color: var(--r-leise); }

/* Summen-Kachel */
.r-band .kf-summe { background: var(--akzent); box-shadow: none; color: var(--kf-auf); }
.r-band .kf-summe .kf-s-ueber { margin: 0 0 10px; font: 700 12px/1.2 "Work Sans", sans-serif; letter-spacing: 0.14em; text-transform: uppercase; color: var(--kf-auf); opacity: 0.85; }
.r-band .kf-s-zahl { margin: 0 0 14px; display: flex; align-items: baseline; gap: 10px; color: var(--kf-auf); }
.r-band .kf-s-zahl b { font: 800 64px/1 "Manrope", sans-serif; letter-spacing: -0.05em; color: var(--kf-auf); }
.r-band .kf-s-zahl span { font: 600 15px/1.3 "Work Sans", sans-serif; }
.kf-summe ul { list-style: none; margin: 0 0 4px; padding: 0; }
.r-band .kf-summe li { display: grid; gap: 1px; padding: 10px 0; border-top: 1px solid color-mix(in srgb, var(--kf-auf) 28%, transparent); font: 400 15px/1.4 "Work Sans", sans-serif; color: var(--kf-auf); }
.r-band .kf-summe li strong { font: 800 15.5px/1.3 "Manrope", sans-serif; color: var(--kf-auf); }

/* Zeitstrahl */
.kf-zeit { margin: 34px 0 36px; padding: 30px 30px 24px; border-radius: 22px; background: var(--r-hell); }
.kf-z-raster { display: grid; column-gap: 4px; }
.kf-z-klammer { grid-row: 1; position: relative; height: 12px; margin: 28px 2px 6px; border: 2px solid var(--akzent); border-bottom: 0; border-radius: 8px 8px 0 0; }
.kf-z-klammer span { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); white-space: nowrap; font: 700 12px/1.2 "Work Sans", sans-serif; letter-spacing: 0.06em; text-transform: uppercase; color: var(--akzent-tief); }
.kf-z-balken { grid-row: 2; min-width: 0; height: 62px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; border-radius: 12px; background: var(--akzent); color: var(--kf-auf); overflow: hidden; }
.r-band .kf-z-balken b { font: 800 16px/1 "Manrope", sans-serif; letter-spacing: -0.01em; color: inherit; }
.kf-z-balken i { font: 500 13px/1 "Work Sans", sans-serif; font-style: normal; opacity: 0.9; font-variant-numeric: tabular-nums; }
.kf-z-balken.gm { background: var(--akzent-tief); }
.kf-z-balken.nurh { background: transparent; color: var(--akzent-tief); box-shadow: inset 0 0 0 2px var(--akzent); background-image: repeating-linear-gradient(135deg, var(--akzent-hauch) 0 6px, transparent 6px 12px); }
.kf-z-marke { grid-row: 3; position: relative; margin-top: 6px; padding: 6px 0 0 1px; border-left: 1.5px solid var(--r-leise); font: 600 12.5px/1 "Work Sans", sans-serif; color: var(--r-leise); font-variant-numeric: tabular-nums; }
.kf-z-marke em { position: absolute; right: 0; top: 0; padding: 6px 1px 0 0; border-right: 1.5px solid var(--r-leise); font-style: normal; }

/* Fahrplan unter dem Zeitstrahl */
.kf-fahrplan { list-style: none; margin: 26px 0 0; padding: 0; }
.r-band .kf-fahrplan li { display: grid; grid-template-columns: 70px 50px minmax(0, 1fr); gap: 12px; align-items: baseline; padding: 11px 0; border-top: 1px solid var(--r-linie); font-size: 16px; line-height: 1.45; }
.kf-f-zeit { font: 600 14px/1.3 "Work Sans", sans-serif; color: var(--r-leise); font-variant-numeric: tabular-nums; white-space: nowrap; }
.kf-f-kurz { justify-self: start; padding: 4px 8px; border-radius: 8px; background: var(--akzent); color: var(--kf-auf); font: 800 12.5px/1 "Manrope", sans-serif; letter-spacing: 0.02em; }
.kf-fahrplan li.gm .kf-f-kurz { background: var(--akzent-tief); }
.kf-fahrplan li.nurh .kf-f-kurz { background: transparent; color: var(--akzent-tief); box-shadow: inset 0 0 0 1.5px var(--akzent); }
.r-band .kf-f-text a { font: 700 16.5px/1.35 "Manrope", sans-serif; color: var(--r-kopf); text-decoration: none; }
.r-band .kf-f-text a:hover { color: var(--akzent-tief); text-decoration: underline; text-decoration-color: var(--akzent); }
.kf-f-text em { display: block; margin-top: 2px; font: 300 15px/1.45 "Work Sans", sans-serif; font-style: normal; color: var(--r-text); }
.r-band .kf-fuss { margin: 18px 0 0; font-size: 13.5px; line-height: 1.5; color: var(--r-leise); text-align: center; }

/* Regeln mit Folgen */
.kf-regeln { list-style: none; margin: 28px 0 22px; padding: 0; display: grid; gap: 8px; }
.r-band .kf-regeln li { display: grid; grid-template-columns: 180px minmax(0, 1fr) 112px; gap: 18px; align-items: center; padding: 16px 20px; border-radius: 16px; background: var(--r-weiss); }
.kf-r-wann { font: 800 15.5px/1.3 "Manrope", sans-serif; letter-spacing: -0.01em; color: var(--r-kopf); }
.r-band .kf-regeln p { margin: 0; font-size: 16px; line-height: 1.55; }
.kf-r-folge { justify-self: end; padding: 6px 11px; border-radius: 999px; font: 700 11px/1 "Work Sans", sans-serif; letter-spacing: 0.08em; text-transform: uppercase; white-space: nowrap; }
.kf-r-folge.aus { background: var(--r-nein-hauch); color: var(--r-nein); }
.kf-r-folge.warn { background: #f7ead2; color: #8a5a12; }
.kf-r-folge.ok { background: var(--r-ok-hauch); color: var(--r-ok); }
@media (prefers-color-scheme: dark) { .kf-r-folge.warn { background: #3a2f1c; color: #e3bf7d; } }

/* Sekunden pro Aufgabe */

@media (max-width: 900px) {
  .kf-kacheln { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .kf-kacheln { grid-template-columns: 1fr; gap: 12px; margin: 26px 0 30px; }
  .r-band .kf-kachel { padding: 20px 18px 16px; }
  .kf-k-kopf { margin-bottom: 12px; }
  .kf-k-sym { width: 40px; height: 40px; border-radius: 12px; }
  .kf-k-nr { font-size: 24px; }
  .r-band .kf-kachel h3 { font-size: 19.5px; }
  .r-band .kf-kachel > p { margin-bottom: 14px; font-size: 15.5px; }
  
  .r-band .kf-s-zahl b { font-size: 52px; }
  .kf-k-werte dd { font-size: 20px; }
  .kf-zeit { margin-left: -8px; margin-right: -8px; padding: 22px 14px 18px; }
  .kf-z-raster { column-gap: 2px; }
  .kf-z-klammer span { font-size: 10.5px; letter-spacing: 0.03em; }
  .kf-z-balken { height: 54px; border-radius: 8px; gap: 3px; }
  .r-band .kf-z-balken b { font-size: 12px; letter-spacing: 0; }
  .kf-z-balken i { font-size: 11px; }
  .kf-z-marke { font-size: 11px; }
  .r-band .kf-fahrplan li { grid-template-columns: 52px 42px minmax(0, 1fr); gap: 8px; font-size: 15px; }
  .kf-f-zeit { font-size: 13px; }
  .r-band .kf-f-text a { font-size: 15.5px; }
  .kf-f-text em { font-size: 14px; }
  .r-band .kf-regeln li { grid-template-columns: minmax(0, 1fr) auto; gap: 6px 12px; padding: 14px 16px; }
  .kf-r-wann { grid-column: 1; grid-row: 1; }
  .kf-r-folge { grid-column: 2; grid-row: 1; }
  .r-band .kf-regeln p { grid-column: 1 / -1; grid-row: 2; font-size: 15.5px; }
}