/* PW Rohrreinigung Nord – Modul „Ring um Ring“ (#ringModul, Abschnitt graphit). Präfix .ri- */
.ri-werk { display: grid; gap: clamp(24px, 4vw, 64px); align-items: center; }
@media (min-width: 900px) { .ri-werk { grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); } }

/* ---------- Bühne ---------- */
.ri-buehne { position: relative; width: 100%; max-width: 640px; margin-inline: auto; padding: 36px 0; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.ri-flaeche { position: relative; width: 100%; aspect-ratio: 1 / 1; }
.ri-canvas { position: absolute; left: 0; top: 0; width: 100%; height: 100%; opacity: 0; transition: opacity .6s ease; }
.ri-flaeche.bereit .ri-canvas { opacity: 1; }
.ri-kreis { position: absolute; inset: 1%; border-radius: 50%; touch-action: none; cursor: grab; -webkit-tap-highlight-color: transparent; }
.ri-kreis:focus-visible { outline-offset: -8px; border-radius: 50%; }
.kreist .ri-kreis { cursor: grabbing; }
.ri-glanz { position: absolute; border-radius: 50%; pointer-events: none; opacity: 0; will-change: transform, opacity;
  background: conic-gradient(from 0deg, rgba(255, 255, 255, 0) 0deg, rgba(255, 255, 255, 0) 240deg, rgba(255, 255, 255, .34) 300deg, rgba(255, 255, 255, 0) 335deg);
  -webkit-mask-image: radial-gradient(closest-side, transparent 35%, #000 44%, #000 90%, transparent 100%);
  mask-image: radial-gradient(closest-side, transparent 35%, #000 44%, #000 90%, transparent 100%); }
.ri-glanz.an { animation: ri-glanz 1.2s cubic-bezier(.4, 0, .2, 1); }
@keyframes ri-glanz { 0% { opacity: 0; transform: rotate(-80deg); } 20% { opacity: 1; } 100% { opacity: 0; transform: rotate(280deg); } }

/* Hinweis: kreisender Finger */
.ri-hinweis { position: absolute; inset: 0; pointer-events: none; transition: opacity .45s ease; }
.ri-hinweis.weg { opacity: 0; }
.ri-bahn { position: absolute; inset: 27%; border-radius: 50%; border: 1.5px dashed rgba(255, 255, 255, .5); }
.ri-dreh { position: absolute; inset: 27%; will-change: transform; }
.ri-finger { position: absolute; left: 50%; top: 0; width: 46px; height: 46px; margin: -23px 0 0 -23px; display: grid; place-items: center; border-radius: 50%; background: var(--orange); color: var(--schwarz); box-shadow: 0 6px 20px rgba(0, 0, 0, .45); }
.ri-finger svg { width: 22px; height: 22px; }
.ri-an .ri-dreh { animation: ri-dreh 3.4s linear infinite; }
.ri-an .ri-finger { animation: ri-dreh 3.4s linear infinite reverse; }
@keyframes ri-dreh { to { transform: rotate(360deg); } }
.ri-hinweis-text { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); text-align: center; font-size: 12px; line-height: 1.35; color: #fff; }

/* Kamera-Einblendung */
.ri-osd { position: absolute; inset: 0; pointer-events: none; font-size: 12px; color: #fff; }
.ri-osd-l { position: absolute; left: 0; top: 4px; }
.ri-osd-r { position: absolute; right: 0; top: 4px; }
.ri-rec { display: inline-flex; align-items: center; gap: 6px; }
.ri-rec i { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.ri-osd-status { position: absolute; left: 0; bottom: 4px; }
.fertig .ri-osd-status { color: var(--frei); }

/* ---------- Steuerung ---------- */
.ri-steuer { display: grid; grid-template-columns: minmax(0, 1fr); grid-template-areas: "ph" "z" "t" "s" "b" "k" "f"; max-width: 520px; }
.ri-phasen { grid-area: ph; list-style: none; margin: 0 0 22px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 18px; font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--stahl); }
.ri-phasen li { display: inline-flex; align-items: center; gap: 8px; }
.ri-ph-ring { width: 14px; height: 14px; flex: none; border-radius: 50%; box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .22); transition: background-color .3s ease, box-shadow .3s ease; }
.ri-phasen li.ist { color: #fff; }
.ri-phasen li.ist .ri-ph-ring { box-shadow: inset 0 0 0 2px var(--orange); }
.ri-phasen li.war .ri-ph-ring { background: rgba(255, 255, 255, .62); box-shadow: none; }
.fertig .ri-phasen li .ri-ph-ring { background: var(--frei); box-shadow: none; }
.ri-zaehler { grid-area: z; display: flex; flex-direction: column; gap: 6px; }
.ri-z-name { font-family: var(--mono); font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--stahl); }
.ri-z-wert { font-family: var(--mono); font-weight: 700; font-size: clamp(64px, 9vw, 124px); line-height: .86; letter-spacing: -.05em; color: var(--orange); font-variant-numeric: tabular-nums; }
.ri-z-wert span { margin-left: .06em; font-size: .4em; letter-spacing: 0; color: var(--stahl); }
.fertig .ri-z-wert b { color: var(--frei); }
.ri-zaehler.neu .ri-z-wert b { display: inline-block; animation: ri-rein .5s cubic-bezier(.2, .8, .2, 1); }
@keyframes ri-rein { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.ri-titel { grid-area: t; margin: 18px 0 8px; }
.fertig .ri-titel { color: var(--frei); }
.ri-satz { grid-area: s; margin: 0 0 18px; min-height: 3em; font-size: 16px; line-height: 1.5; color: var(--stahl); }
.ri-balken { grid-area: b; height: 3px; margin-bottom: 20px; overflow: hidden; border-radius: 2px; background: rgba(255, 255, 255, .12); }
.ri-balken-wert { display: block; height: 100%; background: var(--orange); transform-origin: 0 50%; transform: scaleX(0); transition: transform .12s linear; }
.fertig .ri-balken-wert { background: var(--frei); }
.ri-knoepfe { grid-area: k; align-items: center; }
.ri-auto:disabled { opacity: .5; cursor: default; }
.ri-zurueck { min-height: 44px; padding: 0 6px; border: 0; background: none; color: var(--stahl); font-size: 15px; font-weight: 600; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.ri-zurueck:hover { color: #fff; }
.ri-fertig { grid-area: f; }
.ri-fertig-zeile { display: flex; align-items: center; gap: 8px; margin: 0 0 16px; font-size: 15px; color: var(--frei); }
.ri-fertig-zeile svg { width: 20px; height: 20px; }

/* ---------- Ablauf und Herstellerdaten ---------- */
.ri-unten { display: grid; gap: clamp(28px, 4vw, 56px); margin-top: clamp(56px, 8vw, 104px); }
@media (min-width: 900px) { .ri-unten { grid-template-columns: 1.5fr 1fr; align-items: start; } }
.ri-schritte { list-style: none; margin: 0; padding: 0; }
.ri-schritte li { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 14px; padding: 22px 0; border-top: 1px solid rgba(255, 255, 255, .1); }
.ri-schritte li:last-child { border-bottom: 1px solid rgba(255, 255, 255, .1); }
.ri-s-nr { padding-top: 1px; font-family: var(--mono); font-size: 15px; font-weight: 700; color: var(--orange); }
.ri-schritte p { margin: 8px 0 0; max-width: 40em; font-size: 16px; color: var(--stahl); }
.ri-daten { padding: 22px 24px 20px; border-radius: var(--runde); background: var(--graphit-2); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06); }
.ri-daten-kopf { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 6px; }
.ri-daten dl { margin: 0; }
.ri-daten dl div { padding: 12px 0; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.ri-daten dt { font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--stahl); }
.ri-daten dd { margin: 3px 0 0; font-size: 17px; font-weight: 700; }
.ri-daten .quelle { margin: 14px 0 0; }
.ri-eignung { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px 32px; margin-top: clamp(28px, 4vw, 48px); }
.ri-eignung p { margin: 0; max-width: 44em; font-size: 17px; }

/* ---------- Handy ---------- */
@media (min-width: 760px) and (max-width: 899px) { .ri-steuer { max-width: 640px; width: 100%; margin-inline: auto; } }
@media (max-width: 759px) {
  .ri-schritte li { grid-template-columns: 38px minmax(0, 1fr); gap: 10px; }
  .ri-buehne { width: calc(100% + 2 * var(--rand)); max-width: none; margin-inline: calc(-1 * var(--rand)); padding: 30px 0 32px; }
  .ri-osd-l, .ri-osd-status { left: var(--rand); }
  .ri-osd-r { right: var(--rand); }
  .ri-steuer { grid-template-columns: auto minmax(0, 1fr); grid-template-areas: "ph ph" "z t" "s s" "b b" "k k" "f f"; column-gap: 18px; max-width: none; }
  .ri-phasen { margin-bottom: 18px; gap: 8px 14px; }
  .ri-zaehler { gap: 4px; }
  .ri-z-wert { font-size: 60px; }
  .ri-titel { align-self: end; margin: 0 0 4px; }
  .ri-satz { margin-top: 12px; min-height: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .ri-dreh, .ri-finger, .ri-glanz.an, .ri-zaehler.neu .ri-z-wert b { animation: none !important; }
  .ri-canvas { transition: none; }
}