.invalid-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  text-align: center;
}

.invalid-state p {
  color: var(--text-secondary);
  font-size: 17px;
}

.invalid-state[hidden],
.rechner-container[hidden] {
  display: none;
}

@keyframes rechner-fade-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.rechner-container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 32px 20px 64px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  animation: rechner-fade-in 0.4s var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  .rechner-container {
    animation: none;
  }
}

.page-headline {
  margin: 0;
  font-size: 28px;
  font-weight: 500;
  line-height: 1.3;
  text-align: center;
}

@media (max-width: 480px) {
  .page-headline {
    font-size: 22px;
    white-space: normal;
  }
}

.rechner-layout {
  display: grid;
  grid-template-columns: minmax(0, 400px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

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

.inputs-card {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 24px;
}

@media (max-width: 900px) {
  .inputs-card {
    position: static;
  }
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.input-group:first-child {
  padding-top: 0;
  border-top: none;
}

.input-group-title {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field label {
  font-size: 15px;
  font-weight: 500;
}

.helper {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  cursor: pointer;
}

.checkbox-field input[type="checkbox"] {
  width: 20px;
  height: 20px;
  min-height: auto;
  accent-color: var(--action);
  cursor: pointer;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.info-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-secondary);
  font-size: 11px;
  font-style: normal;
  font-family: Georgia, serif;
  cursor: help;
}

.info-icon:hover,
.info-icon:focus-visible {
  background: var(--action);
  color: #fff;
  outline: none;
}

.info-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--text-primary);
  color: var(--surface);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.4;
  text-align: left;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 10;
  pointer-events: none;
}

.info-icon:hover .info-tooltip,
.info-icon:focus-visible .info-tooltip {
  visibility: visible;
  opacity: 1;
}

@media (max-width: 480px) {
  .info-tooltip {
    left: auto;
    right: -8px;
    transform: none;
    width: 180px;
  }
}

.slider-value {
  font-weight: 400;
  color: var(--text-secondary);
}

.result-section {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.verdict {
  font-size: 24px;
  font-weight: 400;
  line-height: 1.3;
  margin: 0;
  color: var(--text-secondary);
}

.verdict.positive {
  color: var(--text-primary);
  font-weight: 500;
}

.chart-card {
  padding: 16px;
}

.stat-tiles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-tile {
  padding: 16px;
  text-align: center;
  transition: box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
}

.stat-tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -6px rgba(0, 0, 0, 0.1);
}

.stat-label {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.stat-value {
  margin: 0;
  font-size: 28px;
  font-weight: 300;
}

.pain-vorteil-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.pain-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px;
  text-align: center;
  transition: box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
}

.pain-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -6px rgba(0, 0, 0, 0.1);
}

.pain-card.accent {
  background: var(--accent-green-bg);
  border-color: transparent;
}

.pain-vorteil-pct-badge {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.pain-card.accent .pain-vorteil-pct-badge {
  background: var(--surface);
  color: var(--accent-green);
  border-color: var(--accent-green);
}

.pain-vorteil-title {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.pain-card.accent .pain-vorteil-title {
  color: var(--accent-green);
}

.pain-vorteil-value {
  margin: 0;
  font-size: 32px;
  font-weight: 300;
}

.pain-card.accent .pain-vorteil-value {
  color: var(--accent-green);
}

.pain-vorteil-caption {
  margin: 0 0 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

.pain-vorteil-sub {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.pain-card.accent .pain-vorteil-sub {
  color: var(--accent-green);
}

.pain-vorteil-mehr {
  margin: 8px 0 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.pain-card.accent .pain-vorteil-mehr {
  color: var(--accent-green);
}

.pain-vorteil-fazit {
  max-width: 480px;
  margin: 0 auto;
  font-size: 14px;
  text-align: center;
  color: var(--text-secondary);
}

.checkout-cta {
  min-height: 52px;
  border-radius: var(--radius-pill);
  background: var(--action);
  color: #fff;
  font-family: var(--font);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: opacity 0.15s var(--ease), transform 0.15s var(--ease);
}

.checkout-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

@media (max-width: 480px) {
  .pain-vorteil-grid {
    grid-template-columns: 1fr;
  }

  .pain-vorteil-value {
    font-size: 28px;
  }
}

.explanation-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.explanation {
  margin: 0;
  font-size: 13px;
  text-align: center;
}

.calc-explainer {
  text-align: center;
}

.calc-explainer summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.calc-explainer-body {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

.calc-explainer-body p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
}

@media (max-width: 480px) {
  .stat-tiles {
    grid-template-columns: 1fr;
  }

  .stat-value {
    font-size: 24px;
  }

  .verdict {
    font-size: 20px;
  }
}