body {
  min-width: 320px;
  background:
    radial-gradient(circle at 10% 5%, rgb(190 226 210 / 55%), transparent 28rem),
    linear-gradient(145deg, #f8fbf9 0%, var(--color-page) 100%);
}

.page-shell {
  width: min(1180px, calc(100% - 40px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 64px 0;
}

.hero {
  max-width: 760px;
  margin-bottom: 36px;
}

.hero-home-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  margin-bottom: 36px;
  padding: 0 20px;
  border-color: var(--color-primary-strong);
  border-radius: var(--radius-pill);
  color: var(--color-on-primary);
  background: var(--color-primary-strong);
  text-decoration: none;
}

.hero-home-link:hover {
  border-color: var(--color-primary);
  color: var(--color-on-primary);
  background: var(--color-primary);
}

.hero-home-link:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 3px;
}

.hero h1 {
  margin-bottom: var(--space-4);
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  line-height: 1.65;
}

.calculator {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 70%);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
}

.form-panel,
.result-panel {
  padding: clamp(28px, 5vw, 54px);
}

.section-heading {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 32px;
}

.section-heading h2 {
  margin-bottom: var(--space-1);
}

.section-heading p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.step {
  display: grid;
  flex: 0 0 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: var(--color-primary-strong);
  background: var(--color-primary-soft);
  font-size: 0.82rem;
  font-weight: 800;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.field-help {
  margin-top: calc(-1 * var(--space-1));
}

.field-wide {
  grid-column: 1 / -1;
}

.choice-group {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-8) 0 0;
  padding: var(--space-5);
}

/* Datos del reporte: mismo contenedor que .choice-group. */
.identity-group {
  margin: var(--space-8) 0 0;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-muted);
}

.identity-group legend {
  padding: 0 var(--space-1);
  color: var(--color-primary-strong);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
}

.identity-group legend small {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: var(--weight-regular);
}

.identity-group > p {
  margin: 0 0 var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.question-grid {
  gap: 14px 16px;
}

.question-grid .field {
  min-height: 100%;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.question-grid .field > span {
  line-height: 1.45;
}

.question-grid .field select {
  margin-top: auto;
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}

.button-report {
  width: 100%;
  margin-top: 18px;
}

.result-panel {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 560px;
  background: var(--color-surface-muted);
}

.result-placeholder,
.loading-state,
.risk-result {
  width: 100%;
  text-align: center;
}

.result-placeholder,
.loading-state {
  margin: auto 0;
}

.result-placeholder h2 {
  margin: 18px 0 8px;
}

.result-placeholder p,
.loading-state p {
  color: var(--color-text-muted);
  line-height: 1.5;
}

.result-icon {
  display: grid;
  width: 58px;
  height: 58px;
  margin: 0 auto;
  place-items: center;
  border-radius: var(--radius-lg);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  font-size: 1.8rem;
}

.spinner {
  display: block;
  width: 40px;
  height: 40px;
  margin: 0 auto 18px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.result-label,
.result-period {
  color: var(--color-text-muted);
}

.result-details {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.result-detail {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.5;
  text-align: left;
}

.result-detail strong {
  color: var(--color-text);
  text-align: right;
}

.risk-number {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  margin: 10px 0;
  color: var(--color-text);
  transition: color 180ms ease;
}

.risk-number strong {
  font-size: clamp(4.5rem, 9vw, 7rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
}

.risk-number span {
  margin: 8px 0 0 8px;
  font-size: 1.7rem;
  font-weight: 800;
}

.risk-category {
  display: inline-block;
  margin: 10px 0;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  color: var(--color-text);
  background: var(--color-border);
  font-weight: 800;
  transition: color 180ms ease, background 180ms ease;
}

.risk-low .risk-number {
  color: #0d5a43;
}

.risk-low .risk-category {
  color: #0b4c38;
  background: #d8f0e5;
}

.risk-moderate .risk-number {
  color: #874900;
}

.risk-moderate .risk-category {
  color: #704000;
  background: #ffe7bd;
}

.risk-high .risk-number {
  color: #a12830;
}

.risk-high .risk-category {
  color: #821c24;
  background: #f9dfe2;
}

.medical-notice {
  margin-top: 28px;
  text-align: left;
}

.medical-notice p {
  margin: 5px 0 0;
}

.ranges-info {
  margin-top: 48px;
  padding-top: 34px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.ranges-eyebrow {
  margin-bottom: 6px;
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.ranges-info h2 {
  margin-bottom: 14px;
}

.ranges-info > p:not(.ranges-eyebrow) {
  margin-bottom: 12px;
}

.ranges-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 22px 0;
}

.ranges-list div {
  padding: 13px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
}

.ranges-list dt {
  color: var(--color-text);
  font-size: 0.78rem;
  font-weight: 750;
}

.ranges-list dd {
  margin: 2px 0 0;
  color: var(--color-primary-strong);
  font-weight: 800;
}

.source-link {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  color: var(--color-primary-strong);
  font-weight: 750;
  text-underline-offset: 3px;
}

.source-link:focus-visible {
  border-radius: 3px;
  outline: var(--focus-outline);
  outline-offset: 3px;
}

.source-links {
  display: grid;
  gap: 10px;
}

.breakdown-section {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: left;
}

.breakdown-section h3 {
  margin: 0 0 14px;
  font-size: var(--text-md);
}

.breakdown-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breakdown-list > div,
.breakdown-list > li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.breakdown-list dt {
  color: inherit;
}

.breakdown-list dd {
  flex: 0 0 auto;
  margin: 0;
  color: var(--color-primary-strong);
  font-weight: 800;
  white-space: nowrap;
}

.breakdown-list strong {
  flex: 0 0 auto;
  color: var(--color-primary-strong);
  white-space: nowrap;
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100% - 24px, 640px);
    padding: 38px 0;
  }

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

  .result-panel {
    min-height: 430px;
  }
}

@media (max-width: 520px) {
  .page-shell {
    width: 100%;
    padding: 28px 12px;
  }

  .calculator {
    border-radius: var(--radius-xl);
  }

  .form-panel,
  .result-panel {
    padding: 28px 20px;
  }

  .result-panel {
    min-height: 0;
  }

  .hero-home-link {
    width: 100%;
    justify-content: center;
  }

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

  .field-wide {
    grid-column: auto;
  }

  .actions {
    flex-direction: column;
  }

  .ranges-list {
    grid-template-columns: 1fr;
  }

  .result-detail {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }

  .result-detail strong {
    text-align: left;
  }

  .breakdown-list > div,
  .breakdown-list > li {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }
}