.intfuen-frontend {
  --intfuen-bg-image: none;
  position: relative;
  overflow: hidden;
  max-width: 760px;
  margin: 24px auto;
  padding: 28px;
  border-radius: 28px;
  border: 1px solid #dcdcde;
  background-color: #111827;
  background-image: var(--intfuen-bg-image);
  background-size: cover;
  background-position: center;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.16);
  min-height: 460px;
  display: flex;
  align-items: center;
}

.intfuen-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.32) 0%, rgba(17, 24, 39, 0.70) 100%);
}

.intfuen-screen {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 580px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.90);
  backdrop-filter: blur(8px);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.16);
}

.intfuen-content {
  margin-bottom: 20px;
  color: #111827;
}

.intfuen-message {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.intfuen-avatar {
  width: 64px;
  height: 64px;
  border-radius: 999px;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 26px rgba(17, 24, 39, 0.16);
}

.intfuen-avatar-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #2271b1;
  color: #fff;
  font-weight: 700;
  font-size: 24px;
}

.intfuen-bubble {
  background: rgba(255, 255, 255, 0.88);
  border-radius: 20px;
  padding: 16px 18px;
  box-shadow: inset 0 0 0 1px rgba(17, 24, 39, 0.05);
}

.intfuen-speaker {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #2271b1;
  margin-bottom: 8px;
}

.intfuen-copy {
  font-size: 20px;
  line-height: 1.6;
  color: #111827;
}

.intfuen-copy p {
  margin-top: 0;
}

.intfuen-copy p:last-child {
  margin-bottom: 0;
}

.intfuen-copy strong {
  font-weight: 700;
}

.intfuen-copy img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  margin-bottom: 14px;
}

.intfuen-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.intfuen-choice {
  padding: 15px 18px;
  border: 1px solid #2271b1;
  background: linear-gradient(180deg, #2f80c5 0%, #2271b1 100%);
  color: #fff;
  border-radius: 16px;
  cursor: pointer;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.15s ease, opacity 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 10px 24px rgba(34, 113, 177, 0.24);
}

.intfuen-choice:hover {
  opacity: 0.97;
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(34, 113, 177, 0.28);
}

.intfuen-choice:focus {
  outline: 2px solid #8ec5ff;
  outline-offset: 2px;
}

@media (max-width: 640px) {
  .intfuen-frontend {
    padding: 16px;
    min-height: 380px;
    border-radius: 20px;
  }

  .intfuen-screen {
    padding: 18px;
    border-radius: 18px;
  }

  .intfuen-message {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 10px;
  }

  .intfuen-avatar {
    width: 52px;
    height: 52px;
  }

  .intfuen-copy {
    font-size: 17px;
  }
}

/* Interactive Funnel Engine 0.1.8 - landing-style MVP refinements */
.intfuen-frontend {
  max-width: 920px;
  min-height: 520px;
  padding: 34px;
}

.intfuen-screen {
  max-width: 660px;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.94);
}

.intfuen-progress {
  margin-bottom: 24px;
}

.intfuen-progress-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #5b6472;
}

.intfuen-progress-label {
  color: #2271b1;
}

.intfuen-progress-track {
  width: 100%;
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(17, 24, 39, 0.10);
}

.intfuen-progress-bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2271b1 0%, #7c3aed 100%);
  transition: width 0.22s ease;
}

.intfuen-message {
  display: block;
}

.intfuen-avatar {
  width: 46px;
  height: 46px;
  border-width: 2px;
  margin-bottom: 12px;
}

.intfuen-avatar-fallback {
  font-size: 18px;
}

.intfuen-bubble {
  padding: 0;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
}

.intfuen-speaker {
  margin-bottom: 10px;
  color: #5b6472;
}

.intfuen-copy {
  font-size: 26px;
  line-height: 1.35;
  font-weight: 750;
  letter-spacing: -0.03em;
}

.intfuen-buttons {
  gap: 14px;
}

.intfuen-choice {
  width: 100%;
  padding: 18px 20px;
  border: 1px solid rgba(34, 113, 177, 0.24);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  color: #111827;
  text-align: left;
  box-shadow: 0 8px 22px rgba(17, 24, 39, 0.08);
}

.intfuen-choice:hover {
  opacity: 1;
  transform: translateY(-2px);
  border-color: rgba(34, 113, 177, 0.52);
  box-shadow: 0 16px 34px rgba(17, 24, 39, 0.13);
}

.intfuen-choice::after {
  content: '→';
  float: right;
  opacity: 0.55;
}

@media (max-width: 640px) {
  .intfuen-frontend {
    padding: 14px;
    min-height: 440px;
  }

  .intfuen-screen {
    padding: 22px;
  }

  .intfuen-copy {
    font-size: 22px;
  }
}

/* Interactive Funnel Engine 0.1.10 - robust immersive fullscreen */
body.interactive-funnel-engine-lock-scroll {
  overflow: hidden !important;
}

.intfuen-frontend--fullscreen,
.intfuen-frontend--overlay-active {
  position: fixed !important;
  inset: 0 !important;
  z-index: 2147483000 !important;
  width: 100vw !important;
  height: 100vh !important;
  max-width: none !important;
  min-height: 100vh !important;
  margin: 0 !important;
  padding: clamp(18px, 4vw, 56px) !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-sizing: border-box !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.intfuen-frontend:fullscreen {
  width: 100vw !important;
  height: 100vh !important;
  max-width: none !important;
  min-height: 100vh !important;
  margin: 0 !important;
  padding: clamp(18px, 4vw, 56px) !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-sizing: border-box !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.intfuen-frontend--fullscreen .intfuen-screen,
.intfuen-frontend--overlay-active .intfuen-screen,
.intfuen-frontend:fullscreen .intfuen-screen {
  width: min(760px, 92vw) !important;
  max-width: 760px !important;
  max-height: calc(100vh - 48px);
  overflow: auto;
}

.intfuen-fullscreen-toggle {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 3;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(17, 24, 39, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  color: #111827;
  cursor: pointer;
  font-size: 17px;
  line-height: 1;
  box-shadow: 0 8px 20px rgba(17, 24, 39, 0.10);
}

.intfuen-fullscreen-toggle:hover,
.intfuen-fullscreen-toggle:focus {
  background: #fff;
  outline: 2px solid rgba(34, 113, 177, 0.28);
  outline-offset: 2px;
}

@media (max-width: 640px) {
  .intfuen-frontend--fullscreen,
  .intfuen-frontend--overlay-active,
  .intfuen-frontend:fullscreen {
    padding: 12px !important;
  }

  .intfuen-frontend--fullscreen .intfuen-screen,
  .intfuen-frontend--overlay-active .intfuen-screen,
  .intfuen-frontend:fullscreen .intfuen-screen {
    width: min(100%, 94vw) !important;
    max-height: calc(100vh - 24px);
  }

  .intfuen-fullscreen-toggle {
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
  }
}

/* Interactive Funnel Engine 0.1.14 - cleaner fullscreen control and free watermark */
.intfuen-screen {
  display: flex;
  flex-direction: column;
}

.intfuen-content,
.intfuen-buttons {
  flex: 0 0 auto;
}

.intfuen-fullscreen-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-width: 0;
  min-height: 0;
  padding: 0;
  appearance: none;
  -webkit-appearance: none;
}

.intfuen-fullscreen-icon {
  position: relative;
  display: block;
  width: 16px;
  height: 16px;
}

.intfuen-fullscreen-icon::before,
.intfuen-fullscreen-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  border-color: currentColor;
  border-style: solid;
}

.intfuen-fullscreen-icon::before {
  border-width: 2px 0 0 2px;
  clip-path: polygon(0 0, 45% 0, 45% 20%, 20% 20%, 20% 45%, 0 45%);
}

.intfuen-fullscreen-icon::after {
  border-width: 0 2px 2px 0;
  clip-path: polygon(55% 80%, 80% 80%, 80% 55%, 100% 55%, 100% 100%, 55% 100%);
}

/* Interactive Funnel Engine 0.1.17 - final visual polish */
.intfuen-progress-top {
  padding-right: 52px;
}

.intfuen-fullscreen-toggle {
  top: 18px;
  right: 18px;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
}

.intfuen-fullscreen-icon {
  display: block;
  width: 18px;
  height: 18px;
}

.intfuen-fullscreen-icon::before,
.intfuen-fullscreen-icon::after {
  content: none;
}

@media (max-width: 640px) {
  .intfuen-progress-top {
    padding-right: 46px;
  }

  .intfuen-fullscreen-toggle {
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
  }
}