/* Autor: Thorsten Joormann | Tel: +49 162 16 15 396 */

.ref-intro {
  padding-block: var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--paper-line);
  max-width: 72ch;
}

.ref-intro h1 {
  margin-block: var(--space-sm) var(--space-md);
  max-width: 16ch;
}

.ref-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  padding-block: var(--space-lg) var(--space-section);
  counter-reset: ref;
}

.ref-card {
  position: relative;
  background: var(--paper-raised);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  overflow: hidden;
  transition: transform var(--duration-normal) var(--ease-out-expo),
    box-shadow var(--duration-normal) var(--ease-out-expo),
    border-color var(--duration-normal) var(--ease-out-expo);
}

.ref-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.ref-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 26px 50px -30px rgba(0, 0, 0, 0.35);
  border-color: var(--paper-line-strong);
}

.ref-card:hover::after {
  transform: scaleX(1);
}

.ref-card::before {
  counter-increment: ref;
  content: counter(ref, decimal-leading-zero);
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  font-size: var(--label-size);
  font-weight: 600;
  letter-spacing: var(--label-track);
  color: var(--paper-line-strong);
  font-variant-numeric: tabular-nums;
}

.ref-card__brand {
  display: flex;
  align-items: center;
  gap: 0.6em;
  font-size: var(--label-size);
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: var(--label-track);
}

.ref-card h3 {
  font-size: var(--text-lg);
  margin: 0;
}

.ref-card p {
  color: var(--ink-soft);
  max-width: none;
  flex: 1;
}

.ref-card .btn {
  align-self: flex-start;
}

@media (max-width: 900px) {
  .ref-grid {
    grid-template-columns: 1fr;
  }
}

.ref-faq {
  padding-block: var(--space-lg) var(--space-section);
  border-top: 1px solid var(--paper-line);
}

.ref-faq__list {
  display: grid;
  gap: var(--space-md);
  max-width: 72ch;
}

.ref-faq__item h3 {
  margin-bottom: var(--space-xs);
}

.ref-faq__item p {
  color: var(--ink-soft);
  max-width: none;
}

/* ---- In-Page-Overlay statt neuem Tab ---- */
.ref-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(20, 28, 37, 0.78);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

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

.ref-modal__panel {
  width: 100%;
  max-width: 1200px;
  height: min(85vh, 900px);
  background: var(--paper-raised);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 40px 100px -30px rgba(0, 0, 0, 0.6);
}

.ref-modal__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--ink-deep);
  color: var(--white);
}

.ref-modal__title {
  font-size: var(--text-sm);
  font-weight: 600;
}

.ref-modal__close {
  background: none;
  border: 1px solid var(--on-ink-line-strong);
  color: var(--white);
  border-radius: 999px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: var(--text-sm);
  transition: background var(--duration-fast) var(--ease-out-expo);
}

.ref-modal__close:hover {
  background: rgba(247, 245, 240, 0.15);
}

.ref-modal__body {
  position: relative;
  flex: 1;
  background: var(--paper-raised);
}

.ref-modal__loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

/* Muss die display:flex-Regel oben schlagen, sonst bleibt die (weitgehend transparente)
   Ladefläche über dem iFrame liegen und fängt Klicks/Scroll ab, obwohl JS hidden setzt
   und der Inhalt darunter sichtbar ist — gleicher Bug-Typ wie beim Cookie-Banner. */
.ref-modal__loading[hidden] {
  display: none;
}

.ref-modal__frame-hidden {
  opacity: 0;
}

#ref-modal-frame {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

@media (max-width: 720px) {
  .ref-modal {
    padding: 0;
  }

  .ref-modal__panel {
    max-width: none;
    height: 100vh;
    border-radius: 0;
  }
}