/* artifact_id: studio-domclean-case-flow
   version: 6.0.0
   updated_at: 2026-10-16
   status: REVIEW
   supersedes: 5.0.0
   source: studio-v2/case-flow.css
   Deal-Room-basierte Projektbühne mit drei belegten Ansichten der DomClean-Fallstudie. */

/* Die globale No-JS-Regel positioniert echte Site-Header absolut. Der semantische
   Fallseiten-Hero ist kein Site-Header und bleibt auch ohne JavaScript im Dokumentfluss. */
html:not(.js) header.studio-case-hero { position: relative; inset: auto; }

.studio-case-hero { padding-top: clamp(110px, 13vh, 142px); padding-bottom: clamp(54px, 8vh, 84px); }
.studio-case-hero__intro { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(310px, .65fr); gap: clamp(38px, 7vw, 100px); align-items: end; margin-top: clamp(34px, 5vh, 52px); }
.studio-case-hero__copy { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 16px; align-items: start; min-width: 0; }
.studio-case-hero .studio-case-number { padding-top: 10px; }
.studio-case-hero h1 { max-width: none; white-space: nowrap; overflow-wrap: normal; text-wrap: nowrap; font-size: clamp(4.4rem, 8.3vw, 7.5rem); }
.studio-case-lead { max-width: 35ch; margin: 0 0 6px; }

.case-flow { scroll-margin-top: 88px; margin-top: clamp(44px, 7vh, 72px); overflow: hidden; border: 1px solid rgba(247, 245, 240, .16); border-radius: 22px; background: #101014; color: #f7f5f0; box-shadow: 0 38px 90px -52px rgba(23, 22, 26, .82); }
.case-flow__head { display: flex; justify-content: space-between; align-items: center; gap: 24px; min-height: 62px; padding: 14px 20px; border-bottom: 1px solid rgba(247, 245, 240, .13); }
.case-flow__head p { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; min-width: 0; }
.case-flow__head p span { color: #d9a441; font: 700 .62rem/1 "Outfit", sans-serif; letter-spacing: .16em; text-transform: uppercase; }
.case-flow__head p strong { color: #f7f5f0; font: 600 .84rem/1.25 "Outfit", sans-serif; }
.case-flow__head .case-flow__state { justify-content: flex-end; text-align: right; }
.case-flow__head .case-flow__state span { font-variant-numeric: tabular-nums; }
.case-flow__head .case-flow__state strong { color: rgba(247, 245, 240, .58); font-weight: 500; }
.case-flow__sr-title { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.case-flow__tabs { display: none; padding-inline: 20px; border-bottom: 1px solid rgba(247, 245, 240, .13); }
.case-flow.is-enhanced .case-flow__tabs { display: grid; grid-template-columns: repeat(3, 1fr); }
.case-flow__tabs button {
  position: relative; display: grid; grid-template-columns: 28px 1fr; gap: 3px 10px; align-content: center; min-height: 82px; padding: 15px 20px 14px 0; border: 0; border-top: 1px solid rgba(247, 245, 240, .14); background: transparent; color: rgba(247, 245, 240, .54);
  text-align: left; font-family: "Outfit", sans-serif; cursor: pointer; transition: color .2s var(--ease);
}
.case-flow__tabs button::before { content: ""; position: absolute; left: 0; right: 20px; top: -1px; height: 2px; background: #d9a441; transform: scaleX(0); transform-origin: left; }
.case-flow__tabs button span { grid-row: 1 / span 2; display: grid; place-items: center; width: 26px; height: 26px; border: 1px solid rgba(247, 245, 240, .18); border-radius: 50%; color: rgba(247, 245, 240, .58); font-size: .66rem; letter-spacing: .04em; }
.case-flow__tabs button strong { font-size: .9rem; line-height: 1.15; }
.case-flow__tabs button small { font-size: .72rem; line-height: 1.2; color: rgba(247, 245, 240, .42); }
.case-flow__tabs button:hover, .case-flow__tabs button[aria-selected="true"] { color: #f7f5f0; }
.case-flow__tabs button.is-done::before,
.case-flow__tabs button.is-rest::before { transform: scaleX(1); }
.case-flow__tabs button.is-playing::before { animation: caseFlowProgress var(--case-flow-duration, 3000ms) linear forwards; }
.case-flow__tabs button[aria-selected="true"] span { border-color: #d9a441; background: #d9a441; color: #17161a; }

@keyframes caseFlowProgress { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.case-flow__panels { display: grid; gap: 22px; }
.case-flow.is-enhanced .case-flow__panels { position: relative; display: block; height: clamp(430px, calc(100svh - 315px), 640px); min-height: 430px; overflow: hidden; background: #0d1118; isolation: isolate; }
.case-flow__panel { min-width: 0; overflow: hidden; background: #11151d; color: #f7f5f0; }
.case-flow.is-enhanced .case-flow__panel { position: absolute; inset: 0; display: block; opacity: 0; pointer-events: none; }
.case-flow.is-enhanced .case-flow__panel.is-active { z-index: 2; opacity: 1; pointer-events: auto; }
.case-flow__preview { position: relative; min-width: 0; overflow: hidden; background: #eaf0f8; }
.case-flow.is-enhanced .case-flow__preview { position: absolute; inset: 0; }
.case-flow.is-enhanced .case-flow__panel--object .case-flow__preview { inset: 6% 3% 6% 34%; border: 1px solid rgba(247, 245, 240, .18); border-radius: 14px; box-shadow: 0 38px 80px rgba(0, 0, 0, .36); }
.case-flow.is-enhanced .case-flow__panel::before { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(90deg, rgba(8, 11, 17, .88), transparent 45%), linear-gradient(0deg, rgba(8, 11, 17, .82), transparent 54%); }
.case-flow.is-enhanced .case-flow__panel--offer::before { background: linear-gradient(90deg, rgba(8, 11, 17, .78), transparent 42%), linear-gradient(0deg, rgba(8, 11, 17, .8), transparent 58%); }
.case-flow.is-enhanced .case-flow__panel--confirmation::before { background: linear-gradient(0deg, rgba(8, 11, 17, .86), transparent 58%); }
.case-flow__preview::after { content: ""; position: absolute; inset: 0; opacity: 0; pointer-events: none; background: linear-gradient(105deg, transparent 30%, rgba(255, 255, 255, .42) 48%, transparent 66%); transform: translateX(-75%); }
.case-flow__panel.is-entering .case-flow__preview::after { animation: caseFlowSweep 920ms .08s cubic-bezier(.22, 1, .36, 1) both; }
.case-flow__preview picture { display: block; width: 100%; }
.case-flow.is-enhanced .case-flow__preview picture { height: 100%; }
.case-flow__preview img { display: block; width: 100%; height: auto; }
.case-flow.is-enhanced .case-flow__preview img { height: 100%; object-fit: cover; object-position: top center; }
.case-flow.is-enhanced .case-flow__panel--object .case-flow__preview img { object-position: center top; }
.case-flow__preview figcaption {
  position: absolute; left: 16px; bottom: 14px; padding: 7px 10px; border: 1px solid rgba(255, 255, 255, .5); border-radius: 999px;
  background: rgba(255, 255, 255, .9); color: #34415b; font: var(--w-semi) .66rem/1.2 "Outfit", sans-serif; letter-spacing: .045em; text-transform: uppercase;
  box-shadow: 0 8px 28px rgba(23, 22, 26, .12); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.case-flow__summary { display: flex; align-items: center; gap: 14px; min-height: 58px; padding: 12px 20px; border-top: 1px solid rgba(23, 22, 26, .12); background: #fff; color: var(--tl-mut); font-size: .92rem; line-height: 1.4; }
.case-flow.is-enhanced .case-flow__summary { position: absolute; z-index: 3; left: clamp(22px, 4vw, 58px); bottom: clamp(22px, 4vw, 48px); width: min(470px, calc(100% - 44px)); min-height: 0; padding: 18px 20px; border: 1px solid rgba(247, 245, 240, .2); border-radius: 12px; background: rgba(12, 15, 21, .76); color: rgba(247, 245, 240, .78); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); }
.case-flow.is-enhanced .case-flow__panel--object .case-flow__summary { top: 50%; bottom: auto; width: min(320px, 28%); transform: translateY(-50%); }
.case-flow.is-enhanced .case-flow__panel--confirmation .case-flow__summary { left: auto; right: clamp(22px, 4vw, 58px); }
.case-flow__summary span { flex: 0 0 auto; color: var(--gold-ink); font: var(--w-semi) .7rem/1 "Outfit", sans-serif; letter-spacing: var(--ls-caps); }

.case-flow__controls { display: none; align-items: center; justify-content: space-between; gap: 20px; padding: 13px 20px 15px; border-top: 1px solid rgba(247, 245, 240, .13); }
.case-flow.is-enhanced .case-flow__controls { display: flex; }
.case-flow__controls p { display: flex; align-items: center; gap: 9px; color: rgba(247, 245, 240, .46); font-size: .74rem; line-height: 1.35; }
.case-flow__controls p span { width: 6px; height: 6px; flex: none; border-radius: 50%; background: #d9a441; box-shadow: 0 0 0 4px rgba(217, 164, 65, .12); }
.case-flow__controls button { min-height: 40px; padding: 0; border: 0; border-bottom: 1px solid rgba(247, 245, 240, .22); background: transparent; color: #f7f5f0; font: 600 .75rem/1 "Outfit", sans-serif; cursor: pointer; }
.case-flow__controls button span { margin-right: 7px; color: #d9a441; font-size: .95rem; }
.case-flow__controls button:hover { border-color: #d9a441; }

@keyframes caseFlowSweep { 0% { opacity: 0; transform: translateX(-75%); } 28% { opacity: .7; } 100% { opacity: 0; transform: translateX(75%); } }

.case-flow__link { min-height: 44px; display: inline-flex; align-items: center; gap: 7px; border-bottom: 1px solid var(--tl-line); color: var(--tl); font-weight: var(--w-semi); }
.case-flow__link:hover { border-color: var(--gold-ink); }

.studio-case-proof { padding-block: clamp(54px, 8vh, 78px); border-top: 1px solid var(--tl-line); }
.studio-case-proof__head { display: grid; grid-template-columns: minmax(140px, .28fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.studio-case-proof__head h2 { color: var(--tl); font: 600 1rem/1.2 "Outfit", sans-serif; letter-spacing: -.01em; }
.studio-case-proof__facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 26px; border-block: 1px solid var(--tl-line); }
.studio-case-proof__facts div { padding: 24px clamp(18px, 2.4vw, 30px); border-left: 1px solid var(--tl-line); }
.studio-case-proof__facts div:first-child { padding-left: 0; border-left: 0; }
.studio-case-proof__facts dt { color: var(--gold-ink); font: 700 .65rem/1 "Outfit", sans-serif; letter-spacing: .13em; text-transform: uppercase; }
.studio-case-proof__facts dd { margin-top: 10px; color: var(--tl-mut); font-size: .96rem; line-height: 1.55; }
.studio-case-proof__actions { display: flex; justify-content: space-between; align-items: center; gap: 28px; padding-top: 30px; }
.studio-case-proof__actions p { display: grid; gap: 5px; color: var(--tl); }
.studio-case-proof__actions p span { color: var(--tl-mut); }
.studio-case-proof__actions > div { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; }

@media (max-width: 767px) {
  .studio-case-hero { padding-top: 108px; padding-bottom: 52px; }
  .studio-case-hero__intro { grid-template-columns: 1fr; gap: 20px; margin-top: 34px; }
  .studio-case-hero__copy { grid-template-columns: 24px minmax(0, 1fr); gap: 10px; }
  .studio-case-hero .studio-case-number { padding-top: 7px; }
  .studio-case-hero h1 { font-size: clamp(3.55rem, 15.5vw, 5rem); }
  .studio-case-lead { max-width: 34ch; margin: 0; font-size: 1rem; }
  .case-flow { width: calc(100% + 42px); margin-left: -21px; margin-top: 36px; border-inline: 0; border-radius: 0; }
  .case-flow__head { align-items: flex-start; min-height: 0; padding: 16px 21px; }
  .case-flow__head p { display: grid; gap: 6px; }
  .case-flow__head .case-flow__state { display: none; }
  .case-flow.is-enhanced .case-flow__tabs { grid-template-columns: 1fr; padding-inline: 21px; }
  .case-flow.is-enhanced .case-flow__tabs { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .case-flow__tabs button { min-height: 58px; grid-template-columns: 24px minmax(0, 1fr); gap: 6px; padding: 8px 0; }
  .case-flow__tabs button::before { right: 0; }
  .case-flow__tabs button span { grid-row: auto; }
  .case-flow__tabs button strong { align-self: center; font-size: .72rem; }
  .case-flow__tabs button small { display: none; }
  .case-flow.is-enhanced .case-flow__panels { height: clamp(430px, 63svh, 590px); min-height: 430px; }
  .case-flow.is-enhanced .case-flow__panel--object .case-flow__preview { inset: 0; border: 0; border-radius: 0; }
  .case-flow.is-enhanced .case-flow__panel--object::before { background: linear-gradient(0deg, rgba(8, 11, 17, .9), transparent 62%); }
  .case-flow.is-enhanced .case-flow__panel--object .case-flow__summary { top: auto; bottom: 16px; left: 16px; width: calc(100% - 32px); transform: none; }
  .case-flow.is-enhanced .case-flow__panel--confirmation .case-flow__summary { right: 16px; left: 16px; width: auto; }
  .case-flow__preview figcaption { left: 10px; right: 10px; bottom: 10px; width: fit-content; max-width: calc(100% - 20px); white-space: normal; }
  .case-flow__summary { min-height: 0; align-items: flex-start; padding: 15px 16px 17px; font-size: .88rem; }
  .case-flow.is-enhanced .case-flow__summary { left: 16px; bottom: 16px; width: calc(100% - 32px); padding: 14px 15px; }
  .case-flow__controls { align-items: flex-start; padding: 14px 16px 16px; }
  .case-flow__controls p { max-width: 24ch; }
  .studio-case-proof { padding-block: 60px; }
  .studio-case-proof__head { grid-template-columns: 1fr; gap: 16px; }
  .studio-case-proof__head h2 { font-size: 1rem; }
  .studio-case-proof__facts { grid-template-columns: 1fr; margin-top: 24px; }
  .studio-case-proof__facts div, .studio-case-proof__facts div:first-child { padding: 19px 0; border-left: 0; border-top: 1px solid var(--tl-line); }
  .studio-case-proof__facts div:first-child { border-top: 0; }
  .studio-case-proof__actions { display: grid; align-items: stretch; padding-top: 26px; }
  .studio-case-proof__actions > div { align-items: stretch; }
  .studio-case-proof__actions .btn { width: 100%; justify-content: center; }
  .case-flow__link { width: fit-content; }
}

@media (max-width: 340px) {
  .case-flow__head h2 { font-size: 2.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  .case-flow__tabs button { transition: none; }
  .case-flow__tabs button.is-playing::before { animation: none; transform: scaleX(1); }
  .case-flow__panel.is-entering .case-flow__preview::after { animation: none; }
  .case-flow__controls p { display: none; }
}