/* ==========================================================================
   Engagement-Extras — Styles für interaktive Elemente
   ========================================================================== */

/* ─── Scroll Progress Bar ─── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 1001;
  transition: width 50ms linear;
}

/* ─── Smart Sticky CTA Bar ─── */
.sticky-cta-bar {
  position: fixed;
  bottom: -80px;
  left: 0;
  right: 0;
  z-index: 99;
  background: var(--white);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
  padding: var(--sp-3) var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-6);
  transition: bottom var(--transition-slow);
}

.sticky-cta-bar.visible {
  bottom: 0;
}

.sticky-cta-bar__text {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--fs-base);
  color: var(--neutral-800);
}

.sticky-cta-bar__text span {
  color: var(--primary);
}

.sticky-cta-bar__close {
  position: absolute;
  right: var(--sp-4);
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neutral-400);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.sticky-cta-bar__close:hover {
  background: var(--neutral-100);
  color: var(--neutral-700);
}

@media (max-width: 640px) {
  .sticky-cta-bar {
    flex-direction: column;
    gap: var(--sp-2);
    padding: var(--sp-3) var(--sp-4);
  }

  .sticky-cta-bar__text {
    font-size: var(--fs-sm);
  }

  .sticky-cta-bar .btn {
    width: 100%;
    padding: var(--sp-2) var(--sp-4);
    font-size: var(--fs-sm);
  }
}

/* ─── Wärmepumpen-Sparrechner ─── */
.sparrechner {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--sp-10);
  box-shadow: var(--shadow-lg);
  max-width: 720px;
  margin: 0 auto;
}

.sparrechner__header {
  text-align: center;
  margin-bottom: var(--sp-8);
}

.sparrechner__header h3 {
  margin-bottom: var(--sp-2);
}

.sparrechner__header p {
  color: var(--text-muted);
}

.sparrechner__controls {
  display: grid;
  gap: var(--sp-6);
  margin-bottom: var(--sp-8);
}

.sparrechner__field label {
  display: block;
  font-weight: 600;
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-2);
  color: var(--neutral-700);
}

.sparrechner__slider-row {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.sparrechner__slider-row input[type="range"] {
  flex: 1;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  outline: none;
}

.sparrechner__slider-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(27, 107, 64, 0.35);
  transition: transform var(--transition-fast);
}

.sparrechner__slider-row input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.sparrechner__slider-row input[type="range"]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(27, 107, 64, 0.35);
}

.sparrechner__slider-value {
  min-width: 70px;
  text-align: right;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--fs-lg);
  color: var(--primary);
}

.sparrechner select {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius);
  font-size: var(--fs-base);
  background: var(--white);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.sparrechner select:focus {
  border-color: var(--primary);
  outline: none;
}

/* Result */
.sparrechner__result {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
  pointer-events: none;
}

.sparrechner__result.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.sparrechner__result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.sparrechner__result-item {
  text-align: center;
  padding: var(--sp-5);
  border-radius: var(--radius-lg);
  background: var(--neutral-50);
}

.sparrechner__result-item--highlight {
  background: var(--primary-50);
  border: 2px solid var(--primary);
}

.sparrechner__result-label {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: var(--sp-1);
}

.sparrechner__result-value {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-2xl);
  color: var(--neutral-800);
}

.sparrechner__result-item--highlight .sparrechner__result-value {
  color: var(--primary);
}

.sparrechner__bar-container {
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  height: 12px;
  overflow: hidden;
  margin-bottom: var(--sp-2);
}

.sparrechner__bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: var(--radius-full);
  transition: width 1s ease;
}

.sparrechner__bar-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-bottom: var(--sp-4);
}

.sparrechner__co2 {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4);
  background: #ECFDF5;
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  color: var(--primary-dark);
  margin-bottom: var(--sp-6);
}

.sparrechner__co2 svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .sparrechner {
    padding: var(--sp-6);
  }

  .sparrechner__result-grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Förder-Quiz ─── */
.foerderquiz {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--sp-10);
  box-shadow: var(--shadow-lg);
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.foerderquiz__progress {
  height: 4px;
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  margin-bottom: var(--sp-8);
  overflow: hidden;
}

.foerderquiz__progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.5s ease;
  border-radius: var(--radius-full);
}

.foerderquiz__step {
  display: none;
}

.foerderquiz__step.active {
  display: block;
  animation: quizFadeIn 0.4s ease;
}

@keyframes quizFadeIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

.foerderquiz__question {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: var(--sp-2);
}

.foerderquiz__hint {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-bottom: var(--sp-6);
}

.foerderquiz__options {
  display: grid;
  gap: var(--sp-3);
}

.foerderquiz__option {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition);
  font-weight: 500;
}

.foerderquiz__option:hover {
  border-color: var(--primary-light);
  background: var(--primary-50);
}

.foerderquiz__option.selected {
  border-color: var(--primary);
  background: var(--primary-50);
  box-shadow: 0 0 0 3px rgba(27, 107, 64, 0.15);
}

.foerderquiz__option-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--neutral-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.foerderquiz__option.selected .foerderquiz__option-icon {
  background: var(--primary);
  color: var(--white);
}

/* Quiz Result */
.foerderquiz__result {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
  text-align: center;
}

.foerderquiz__result.visible {
  opacity: 1;
  transform: translateY(0);
}

.result-circle {
  width: 140px;
  height: 140px;
  margin: 0 auto var(--sp-6);
  position: relative;
}

.result-circle svg {
  transform: rotate(-90deg);
  width: 140px;
  height: 140px;
}

.result-circle__bg {
  fill: none;
  stroke: var(--neutral-200);
  stroke-width: 8;
}

.result-circle__fill {
  fill: none;
  stroke: var(--primary);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 339.292;
  stroke-dashoffset: 339.292;
  transition: stroke-dashoffset 1.5s ease;
}

.result-circle__text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-2xl);
  color: var(--primary);
}

.foerderquiz__result-details {
  text-align: left;
  margin: var(--sp-6) 0;
}

.foerderquiz__result-row {
  display: flex;
  justify-content: space-between;
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--neutral-200);
  font-size: var(--fs-base);
}

.foerderquiz__result-row:last-child {
  border-bottom: none;
  font-weight: 700;
  color: var(--primary);
  font-size: var(--fs-lg);
}

.foerderquiz__result-row span:last-child {
  font-family: var(--font-heading);
  font-weight: 700;
}

.foerderquiz__result ul {
  text-align: left;
  margin: var(--sp-4) 0;
  list-style: none;
}

.foerderquiz__result ul li {
  padding: var(--sp-2) 0;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  position: relative;
  padding-left: var(--sp-6);
}

.foerderquiz__result ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ─── Before/After Slider ─── */
.ba-slider {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: col-resize;
  user-select: none;
  aspect-ratio: 16/10;
}

.ba-slider__after,
.ba-slider__before {
  position: absolute;
  inset: 0;
}

.ba-slider__after img,
.ba-slider__before img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
}

.ba-slider__before {
  clip-path: inset(0 50% 0 0);
  z-index: 2;
}

.ba-slider__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background: var(--white);
  z-index: 3;
  transform: translateX(-50%);
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
}

.ba-slider__handle::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: var(--white);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ba-slider__handle::before {
  content: '◂ ▸';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 4;
  font-size: 12px;
  color: var(--neutral-600);
  white-space: nowrap;
  letter-spacing: 2px;
}

.ba-slider__label {
  position: absolute;
  bottom: var(--sp-3);
  padding: var(--sp-1) var(--sp-3);
  background: rgba(0, 0, 0, 0.6);
  color: var(--white);
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius);
  z-index: 4;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ba-slider__label--before {
  left: var(--sp-3);
}

.ba-slider__label--after {
  right: var(--sp-3);
}

/* ─── Tooltip ─── */
.tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--neutral-900);
  color: var(--white);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius);
  font-size: var(--fs-xs);
  white-space: nowrap;
  opacity: 0;
  transition: all var(--transition-fast);
  pointer-events: none;
  z-index: 50;
}

.tooltip.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--neutral-900);
}

/* ─── Animated Element Icons ─── */
@keyframes flicker {
  0%, 100% { opacity: 1; transform: scale(1); }
  25% { opacity: 0.85; transform: scale(1.03); }
  50% { opacity: 1; transform: scale(0.98); }
  75% { opacity: 0.9; transform: scale(1.02); }
}

@keyframes wave {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-2px) rotate(1deg); }
  50% { transform: translateY(0) rotate(0deg); }
  75% { transform: translateY(2px) rotate(-1deg); }
}

@keyframes pulse-earth {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.element-card--feuer:hover .card__icon svg {
  animation: flicker 1.5s ease infinite;
}

.element-card--wasser:hover .card__icon svg {
  animation: wave 2s ease infinite;
}

.element-card--erde:hover .card__icon svg {
  animation: pulse-earth 2s ease infinite;
}

/* ─── Stagger group children ─── */
.stagger-group > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-group > *.visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-group > *:nth-child(1) { transition-delay: 0ms; }
.stagger-group > *:nth-child(2) { transition-delay: 150ms; }
.stagger-group > *:nth-child(3) { transition-delay: 300ms; }
.stagger-group > *:nth-child(4) { transition-delay: 450ms; }
.stagger-group > *:nth-child(5) { transition-delay: 600ms; }
.stagger-group > *:nth-child(6) { transition-delay: 750ms; }