/* ══════════════════════════════════════════════════════════
   referenzen.css  —  Page-scoped styles (prefix: ref-)
   Global patterns (section, container, btn, ns-cta, etc.)
   live in base.css / components.css
══════════════════════════════════════════════════════════ */


/* Kontrollierter Desktop-Zeilenumbruch in Headlines */
.ref-br { display: inline; }
@media (max-width: 540px) { .ref-br { display: none; } }

/* ─────────────────────────────────────────────────────────
   Shared: Eyebrow variants
───────────────────────────────────────────────────────── */
.ref-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-gray-500, #7a7a7a);
  margin-bottom: 1.2rem;
}

.ref-eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1px;
  background: currentColor;
  flex-shrink: 0;
}

.ref-eyebrow--green { color: var(--avio-green); }
.ref-eyebrow--muted { color: rgba(255,255,255,0.35); }


/* ─────────────────────────────────────────────────────────
   Shared: Browser / Showcase Frame
───────────────────────────────────────────────────────── */
.ref-showcase-frame {
  background: #111113;
  border-radius: var(--radius-md, 20px);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}

.ref-showcase-frame--wide {
  border-radius: var(--radius-lg, 24px);
}

.ref-showcase-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  background: #1a1a1c;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.ref-showcase-dots {
  display: flex;
  align-items: center;
  gap: 0.38rem;
  flex-shrink: 0;
}

.ref-showcase-dots span {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.14);
}
.ref-showcase-dots span:nth-child(1) { background: #ff5f57; }
.ref-showcase-dots span:nth-child(2) { background: #febc2e; }
.ref-showcase-dots span:nth-child(3) { background: #28c840; }

.ref-showcase-url {
  font-size: 0.72rem;
  font-weight: 500;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ref-showcase-video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: contain;
  background: #0a0a0b;
}

/* Hero composition: decorative, cover is fine */
.ref-hero-frame .ref-showcase-video,
.ref-hero-frame-accent .ref-showcase-video {
  object-fit: cover;
  background: none;
}

.btn--ghost-green {
  background: #ffffff;
  color: #111111;
  border: 1px solid rgba(0, 0, 0, 0.12);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.10);
}

@media (hover: hover) and (pointer: fine) {
  .btn--ghost-green:hover {
    background: var(--avio-green, #1ea336);
    color: #ffffff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(30, 163, 54, 0.22);
  }
}


/* ─────────────────────────────────────────────────────────
   1. HERO — Team-Video füllt die gesamte Mediafläche
───────────────────────────────────────────────────────── */
.ref-hero-media {
  /* subpage-hero__media already positions this absolutely */
}

.ref-hero-team-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  aspect-ratio: unset;
  background: #0a0a0b;
}


/* ─────────────────────────────────────────────────────────
   2. PROJEKTAUSWAHL — Light section with two project cards
───────────────────────────────────────────────────────── */
.ref-projekte__head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto clamp(3rem, 5vw, 4.5rem);
}

.ref-projekte__headline {
  font-size: clamp(1.75rem, 2.8vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--c-black);
  line-height: 1.18;
  margin-bottom: 0.9rem;
}

.ref-projekte__sub {
  font-size: clamp(0.9rem, 1vw, 1rem);
  color: var(--c-gray-600, #4a4a4a);
  line-height: 1.65;
  max-width: 56ch;
  margin: 0 auto;
}

.ref-projekte__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.25rem, 2vw, 2rem);
}

/* Project card — entire card is the anchor */
.ref-proj-card {
  display: flex;
  flex-direction: column;
  background: var(--c-white, #fff);
  border: 1px solid var(--c-line-light, #e5e5e3);
  border-radius: var(--radius-md, 20px);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.ref-proj-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.1);
  border-color: rgba(30,163,54,0.3);
}

.ref-proj-card__frame {
  background: #111113;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  /* reuses .ref-showcase-bar inside */
}

.ref-proj-card__img-wrap {
  overflow: hidden;
  aspect-ratio: 16/9;
}

.ref-proj-card__img-wrap img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.ref-proj-card:hover .ref-proj-card__img-wrap img {
  transform: scale(1.03);
}

.ref-proj-card__body {
  padding: clamp(1.25rem, 2vw, 1.75rem);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.ref-proj-card__eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--avio-green);
  margin: 0;
}

.ref-proj-card__name {
  font-size: clamp(1.25rem, 1.8vw, 1.65rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--c-black);
  line-height: 1.15;
  margin: 0;
}

.ref-proj-card__desc {
  font-size: 0.88rem;
  color: var(--c-gray-600, #4a4a4a);
  line-height: 1.6;
  margin: 0.25rem 0 auto;
}

.ref-proj-card__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.25rem;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--c-black);
  border-bottom: 1.5px solid rgba(0,0,0,0.12);
  padding-bottom: 0.1rem;
  transition: color 0.2s ease, border-color 0.2s ease;
  align-self: flex-start;
}

.ref-proj-card:hover .ref-proj-card__btn {
  color: var(--avio-green);
  border-color: var(--avio-green);
}


/* ─────────────────────────────────────────────────────────
   3 + 5. CASE INTRO — Dark project introduction
───────────────────────────────────────────────────────── */
.ref-case-intro {
  background: #0a0a0b;
  padding: clamp(5rem, 8vw, 7rem) 0;
}

.ref-case-intro__grid {
  display: grid;
  grid-template-columns: 42fr 58fr;
  gap: clamp(3rem, 5vw, 5.5rem);
  align-items: start;
  margin-bottom: clamp(3rem, 5vw, 5rem);
}

.ref-case-intro__headline {
  font-size: var(--sh-size);
  font-weight: var(--sh-weight);
  letter-spacing: var(--sh-ls);
  color: var(--c-white, #fff);
  line-height: var(--sh-lh);
  margin-bottom: 1.25rem;
}

.ref-case-intro__lead {
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  max-width: 46ch;
  margin-bottom: 2rem;
}

/* Meta table */
.ref-case-meta {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.5rem;
  margin-bottom: 2rem;
}

.ref-case-meta__item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 0.75rem;
  align-items: start;
}

.ref-case-meta__label {
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  padding-top: 0.1rem;
}

.ref-case-meta__value {
  font-size: 0.87rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  line-height: 1.5;
}

.ref-case-meta__value--status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--avio-green);
  font-weight: 700;
}

.ref-status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--avio-green);
  animation: ref-pulse 2.2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes ref-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.ref-case-intro__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.875rem;
}

.ref-case-intro__visual { align-self: start; }


/* Condensed before/after inside dark section */
.ref-mini-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1rem, 1.5vw, 1.5rem);
}

.ref-mini-col {
  border-radius: var(--radius-sm, 12px);
  padding: clamp(1.4rem, 2.5vw, 2rem) clamp(1.25rem, 2vw, 1.75rem);
}

.ref-mini-col--before {
  background: #141416;
  border: 1px solid rgba(255,255,255,0.06);
}

.ref-mini-col--after {
  background: rgba(30,163,54,0.05);
  border: 1px solid rgba(30,163,54,0.2);
  box-shadow: 0 0 0 1px rgba(30,163,54,0.08) inset;
}

.ref-mini-eyebrow {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ref-mini-eyebrow::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 1px;
  background: currentColor;
}

.ref-mini-eyebrow--green { color: var(--avio-green); }

.ref-mini-col-title {
  font-size: clamp(0.92rem, 1.2vw, 1.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 1.1rem;
  color: rgba(255,255,255,0.6);
}

.ref-mini-col--after .ref-mini-col-title {
  color: rgba(255,255,255,0.9);
}

.ref-mini-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.ref-mini-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.84rem;
  color: rgba(255,255,255,0.52);
  line-height: 1.5;
}

.ref-mini-list--check li {
  color: rgba(255,255,255,0.78);
}

.ref-mini-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.08rem;
}

.ref-mini-icon--x {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.3);
}

.ref-mini-icon--check {
  background: rgba(30,163,54,0.12);
  color: var(--avio-green);
}


/* ─────────────────────────────────────────────────────────
   4 + 6. MODULE SWITCHER — Light interactive section
───────────────────────────────────────────────────────── */
.ref-modules__head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto clamp(2.5rem, 4vw, 3.5rem);
}

.ref-modules__headline {
  font-size: var(--sh-size);
  font-weight: var(--sh-weight);
  letter-spacing: var(--sh-ls);
  color: var(--c-black);
  line-height: var(--sh-lh);
  margin-bottom: 0.7rem;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.ref-modules__headline span {
  display: block;
  white-space: nowrap;
  text-align: center;
}

@media (max-width: 540px) {
  .ref-modules__headline {
    width: auto;
    text-align: center;
  }
  .ref-modules__headline span {
    white-space: normal;
  }
}

.ref-modules__sub {
  font-size: 0.9rem;
  color: var(--c-gray-600, #4a4a4a);
  line-height: 1.6;
}

/* Tab navigation */
.ref-module-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  margin-bottom: clamp(1.5rem, 2.5vw, 2rem);
  padding-bottom: 2px;
}

.ref-module-tabs::-webkit-scrollbar { display: none; }

.ref-module-tab {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.1rem;
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--c-gray-600, #4a4a4a);
  background: var(--c-white, #fff);
  border: 1.5px solid var(--c-line-light, #e5e5e3);
  border-radius: 100px;
  cursor: pointer;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}

.ref-module-tab:hover {
  border-color: rgba(30,163,54,0.35);
  color: var(--c-black);
}

.ref-module-tab--active {
  background: #080808;
  border-color: #080808;
  color: var(--c-white, #fff);
}

.ref-module-tab--active::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--avio-green);
  flex-shrink: 0;
}

/* Layout: video left, copy right */
.ref-module-layout {
  display: grid;
  grid-template-columns: 59fr 41fr;
  gap: clamp(1.75rem, 3vw, 2.75rem);
  align-items: start;
}

.ref-module-browser {
  align-self: start;
}

.ref-module-copy {
  align-self: center;
  padding: 0.5rem 0;
}

.ref-module-copy__title {
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--c-black);
  line-height: 1.2;
  margin-bottom: 0.9rem;
}

.ref-module-copy__desc {
  font-size: clamp(0.88rem, 1vw, 0.97rem);
  color: var(--c-gray-600, #4a4a4a);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.ref-module-copy__bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.ref-module-copy__bullets li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-black);
  line-height: 1.45;
}

.ref-module-check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(30,163,54,0.1);
  color: var(--avio-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.06rem;
}


/* ─────────────────────────────────────────────────────────
   7. IM HINTERGRUND — Three background-work tiles
───────────────────────────────────────────────────────── */
.ref-bw {
  background: var(--c-white, #fff);
}

.ref-bw__head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto clamp(3rem, 5vw, 4.5rem);
}

.ref-bw__headline {
  font-size: var(--sh-size);
  font-weight: var(--sh-weight);
  letter-spacing: var(--sh-ls);
  color: var(--c-black);
  line-height: var(--sh-lh);
  margin-bottom: 0.9rem;
  max-width: 700px;
}

.ref-bw__sub {
  font-size: clamp(0.88rem, 1vw, 0.97rem);
  color: var(--c-gray-600, #4a4a4a);
  line-height: 1.65;
}

.ref-bw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 1.75vw, 1.5rem);
}

.ref-bw-card {
  background: var(--c-off-white, #f4f4f3);
  border: 1px solid var(--c-line-light, #e5e5e3);
  border-left: 3px solid var(--avio-green);
  border-radius: var(--radius-sm, 12px);
  padding: clamp(1.5rem, 2.5vw, 2rem) clamp(1.25rem, 2vw, 1.75rem);
}

.ref-bw-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0,0,0,0.055);
  color: #6b7280;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
}

.ref-bw-card__title {
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-black);
  margin-bottom: 0.6rem;
  line-height: 1.25;
}

.ref-bw-card__desc {
  font-size: 0.86rem;
  color: var(--c-gray-600, #4a4a4a);
  line-height: 1.6;
  margin: 0;
}


/* ─────────────────────────────────────────────────────────
   8. WEITERE PROJEKTE — Dark, minimal
───────────────────────────────────────────────────────── */
/* Scroll-Offset damit Navbar die Überschrift nicht verdeckt */
#massivhaus-module,
#arbts-module {
  scroll-margin-top: 130px;
}

.ref-more {
  background: #0a0a0b;
}

/* ── Weitere Umsetzungen ─────────────────────────────────── */
.ref-weitere__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto clamp(2.5rem, 4vw, 3.5rem);
}

.ref-weitere__headline {
  font-size: var(--sh-size);
  font-weight: var(--sh-weight);
  letter-spacing: var(--sh-ls);
  color: var(--c-white, #fff);
  line-height: var(--sh-lh);
  margin-bottom: 0.85rem;
  max-width: 700px;
}

.ref-weitere__intro {
  font-size: clamp(0.9rem, 1vw, 1rem);
  color: rgba(255,255,255,0.5);
  line-height: 1.65;
}

.ref-weitere__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.ref-weitere__card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Parallele Video-Elemente: gleiche Basisdarstellung wie ref-showcase-video */
.parallel-project-video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: contain;
  background: #0a0a0b;
}


/* ─────────────────────────────────────────────────────────
   2. UNSER ANSATZ — Einführungs-Section
───────────────────────────────────────────────────────── */
.ref-ansatz__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
}

.ref-ansatz__headline {
  font-size: var(--sh-size);
  font-weight: var(--sh-weight);
  letter-spacing: var(--sh-ls);
  color: var(--c-black);
  line-height: var(--sh-lh);
  margin-bottom: 1.25rem;
  max-width: 480px;
}

.ref-ansatz__body {
  font-size: clamp(0.93rem, 1.05vw, 1.05rem);
  color: var(--c-gray-600, #4a4a4a);
  line-height: 1.72;
  max-width: 46ch;
}

/* Projektkarten-Navigation (rechts in Unser Ansatz) */
.ref-ansatz__nav {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.ref-proj-nav {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-md, 20px);
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
  padding: clamp(1.6rem, 2.8vw, 2.2rem) clamp(1.5rem, 2.5vw, 2rem);
  position: relative;
}

.ref-proj-nav:hover {
  transform: translateY(-3px);
}

/* Primär: dunkel, grün akzentuiert (Massivhaus) */
.ref-proj-nav--primary {
  background: #0a0a0b;
  min-height: 200px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.22), 0 4px 14px rgba(0,0,0,0.12);
}

.ref-proj-nav--primary:hover {
  box-shadow: 0 22px 60px rgba(0,0,0,0.28), 0 6px 20px rgba(0,0,0,0.14);
}

/* Sekundär: hell (ARBTS) */
.ref-proj-nav--secondary {
  background: var(--c-white, #fff);
  border: 1px solid var(--c-line-light, #e5e5e3);
  min-height: 140px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.055);
}

.ref-proj-nav--secondary:hover {
  box-shadow: 0 10px 36px rgba(0,0,0,0.1);
  border-color: rgba(30,163,54,0.3);
}

.ref-proj-nav__meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
}

.ref-proj-nav__num {
  display: inline-flex;
  align-items: center;
  clip-path: polygon(0 0, 100% 0, 87% 100%, 0 100%);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.85rem 0.3rem 0.5rem;
}

.ref-proj-nav--primary .ref-proj-nav__num {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.65);
}

.ref-proj-nav--secondary .ref-proj-nav__num {
  background: rgba(0,0,0,0.07);
  color: #4a4a4a;
}

.ref-proj-nav__cat {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.ref-proj-nav--primary .ref-proj-nav__cat { color: rgba(255,255,255,0.35); }
.ref-proj-nav--secondary .ref-proj-nav__cat { color: var(--c-gray-500, #7a7a7a); }

.ref-proj-nav__name {
  font-size: clamp(1.3rem, 2vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.15;
  margin: 0 0 auto;
  padding-bottom: 1.1rem;
  flex: 1;
}

.ref-proj-nav--primary .ref-proj-nav__name { color: #fff; }
.ref-proj-nav--secondary .ref-proj-nav__name { color: var(--c-black); }

.ref-proj-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.83rem;
  font-weight: 700;
  padding-top: 1rem;
  border-top-width: 1px;
  border-top-style: solid;
  transition: gap 0.2s ease;
  align-self: flex-start;
  width: 100%;
}

.ref-proj-nav--primary .ref-proj-nav__cta {
  color: var(--avio-green);
  border-top-color: rgba(255,255,255,0.08);
}

.ref-proj-nav--secondary .ref-proj-nav__cta {
  color: var(--c-black);
  border-top-color: var(--c-line-light, #e5e5e3);
}

.ref-proj-nav:hover .ref-proj-nav__cta {
  gap: 0.7rem;
}


/* ─────────────────────────────────────────────────────────
   3. PROJEKTANSATZ — Dreiteilige Erklärleiste
───────────────────────────────────────────────────────── */
.ref-steps-strip {
  background: var(--c-white, #fff);
  padding: 0 0 clamp(3rem, 5vw, 4.5rem);
}

.ref-steps-card {
  background: var(--c-white, #fff);
  border: 1px solid var(--c-line-light, #e5e5e3);
  border-radius: var(--radius-md, 20px);
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: start;
  padding: clamp(2rem, 3.5vw, 2.75rem) clamp(1.75rem, 3vw, 2.75rem);
  box-shadow: 0 2px 16px rgba(0,0,0,0.045);
}

.ref-step-divider {
  width: 1px;
  background: var(--c-line-light, #e5e5e3);
  align-self: stretch;
  margin: 0 clamp(1.5rem, 2.5vw, 2.25rem);
}

.ref-step-num {
  display: inline-flex;
  align-items: center;
  clip-path: polygon(0 0, 100% 0, 86% 100%, 0 100%);
  background: #0a0a0b;
  color: #fff;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 0.38rem 1.1rem 0.38rem 0.6rem;
  margin-bottom: 1.15rem;
}

.ref-step-col__title {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-black);
  margin: 0 0 0.3rem;
}

.ref-step-col__sub {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-black);
  margin: 0 0 0.7rem;
}

.ref-step-col__body {
  font-size: 0.84rem;
  color: var(--c-gray-600, #4a4a4a);
  line-height: 1.62;
  margin: 0;
}


/* ─────────────────────────────────────────────────────────
   4. PROJEKTAUSWAHL — kompakterer Kopf + Video-Karten
───────────────────────────────────────────────────────── */

/* Kompakterer Kopf: Headline kleiner, kein langer Subtext */
.ref-projekte__head {
  margin-bottom: clamp(2rem, 3.5vw, 3rem);
}

.ref-projekte__headline {
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  margin-bottom: 0;
}

/* Video in der Projektkarte: Cover wie img, mit hover-Zoom */
.ref-proj-card__video {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background: #111113;
  transition: transform 0.4s ease;
}

.ref-proj-card:hover .ref-proj-card__video {
  transform: scale(1.03);
}


/* ─────────────────────────────────────────────────────────
   RESPONSIVE — 1100px
───────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .ref-case-intro__grid {
    grid-template-columns: 44fr 56fr;
    gap: clamp(2.5rem, 4vw, 4rem);
  }

  .ref-module-layout {
    grid-template-columns: 55fr 45fr;
  }
}


/* ─────────────────────────────────────────────────────────
   RESPONSIVE — 900px
───────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .ref-mini-compare {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .ref-module-layout {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .ref-module-copy {
    padding: 0;
  }

  .ref-bw-grid {
    grid-template-columns: 1fr 1fr;
  }
}


/* ─────────────────────────────────────────────────────────
   RESPONSIVE — 768px
───────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .ref-steps-card {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .ref-step-divider {
    width: 100%;
    height: 1px;
    margin: clamp(1.5rem, 2.5vw, 2rem) 0;
    align-self: auto;
  }
}


@media (max-width: 768px) {
  .ref-hero-team-video {
    object-position: center top;
  }

  .ref-ansatz__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .ref-ansatz__body {
    max-width: 100%;
  }

  .ref-proj-nav--primary {
    min-height: 160px;
  }

  .ref-proj-nav--secondary {
    min-height: 120px;
  }

  .ref-projekte__grid {
    grid-template-columns: 1fr;
  }

  .ref-case-intro__grid {
    grid-template-columns: 1fr;
    gap: clamp(2rem, 5vw, 3rem);
    margin-bottom: clamp(2rem, 4vw, 3rem);
  }

  .ref-mini-compare {
    grid-template-columns: 1fr;
  }

  .ref-case-meta__item {
    grid-template-columns: 110px 1fr;
  }

  .ref-case-intro__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .ref-module-layout {
    grid-template-columns: 1fr;
  }

  .ref-bw-grid {
    grid-template-columns: 1fr;
  }

  .ref-hero-composition {
    padding: 1.5rem 1rem 1.5rem 2rem;
  }

  .ref-hero-frame-accent {
    height: 80px;
  }
}


/* ─────────────────────────────────────────────────────────
   RESPONSIVE — 540px
───────────────────────────────────────────────────────── */
@media (max-width: 540px) {
  .ref-case-meta__item {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .ref-case-meta__label {
    font-size: 0.66rem;
  }

  .ref-mini-col {
    padding: 1.25rem 1rem;
  }

  .ref-case-intro,
  .ref-modules,
  .ref-bw,
  .ref-more {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .ref-projekte__grid {
    gap: 1rem;
  }

  .ref-weitere__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}


/* ─────────────────────────────────────────────────────────
   Reduced Motion
───────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .ref-status-dot {
    animation: none;
  }

  .ref-proj-card,
  .ref-module-tab {
    transition: none;
  }

  .ref-proj-card:hover {
    transform: none;
  }

  .ref-proj-card__img-wrap img {
    transition: none;
  }
}


/* ─────────────────────────────────────────────────────────
   Expand-Button (innerhalb der Showcase-Frames)
───────────────────────────────────────────────────────── */
.ref-showcase-frame {
  position: relative; /* Anchor für den absolut platzierten Button */
}

.ref-expand-btn {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.65rem;
  background: rgba(10, 10, 11, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.82);
  font-family: inherit;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.18s ease, background 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}

.ref-expand-btn__label {
  display: none;
}

.ref-showcase-frame:hover .ref-expand-btn,
.ref-showcase-frame:focus-within .ref-expand-btn {
  opacity: 1;
}

.ref-expand-btn:hover {
  background: rgba(30, 163, 54, 0.2);
  border-color: rgba(30, 163, 54, 0.45);
  color: #fff;
}

.ref-expand-btn:focus-visible {
  opacity: 1;
  outline: 2px solid var(--avio-green);
  outline-offset: 2px;
}

/* Auf Touch-Geräten: immer sichtbar (kein Hover) */
@media (hover: none) {
  .ref-expand-btn {
    opacity: 1;
  }
}


/* ─────────────────────────────────────────────────────────
   Video-Modal (Lightbox)
───────────────────────────────────────────────────────── */
body.video-modal-open {
  overflow: hidden;
}

.video-modal {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 3vw, 2rem);
}

.video-modal[hidden] {
  display: none;
}

.video-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 5, 6, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.22s ease;
}

.video-modal.is-open .video-modal__backdrop {
  opacity: 1;
}

.video-modal__content {
  position: relative;
  z-index: 1;
  width: min(92vw, 1600px);
  max-height: 88vh;
  background: #0a0a0b;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg, 24px);
  overflow: hidden;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.65), 0 12px 32px rgba(0, 0, 0, 0.4);
  transform: scale(0.96);
  opacity: 0;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.video-modal.is-open .video-modal__content {
  transform: scale(1);
  opacity: 1;
}

.video-modal__close {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  z-index: 2;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(20, 20, 22, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.75);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  font-family: inherit;
}

.video-modal__close:hover {
  background: rgba(30, 163, 54, 0.2);
  border-color: rgba(30, 163, 54, 0.45);
  color: #fff;
}

.video-modal__close:focus-visible {
  outline: 2px solid var(--avio-green);
  outline-offset: 3px;
}

.video-modal__video {
  display: block;
  width: 100%;
  max-height: 88vh;
  object-fit: contain;
  background: #0a0a0b;
}

/* Mobile */
@media (max-width: 768px) {
  .video-modal__content {
    width: 96vw;
    max-height: 90vh;
    border-radius: var(--radius-md, 16px);
  }

  .video-modal__video {
    max-height: 82vh;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .video-modal__backdrop,
  .video-modal__content {
    transition: none;
  }

  .video-modal.is-open .video-modal__content {
    transform: scale(1);
  }
}