/**
 * Pet Age Calculator — Styles
 * Multi-step wizard: Species → Details → Age → Result
 * Prefix: pk-ac
 */

/* ============================================================
   1. Hero / Intro Section
   ============================================================ */

.pk-ac-hero {
  padding: 4rem 2rem 3rem;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-surface) 100%);
  text-align: center;
}

.pk-ac-hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 auto 1.5rem;
  max-width: 620px;
}

.pk-ac-hero__intro {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 720px;
  margin: 0 auto 2rem;
}

.pk-ac-hero__intro p {
  margin-bottom: 1rem;
}

.pk-ac-hero__trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.pk-ac-hero__trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-secondary);
  background: var(--color-white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.pk-ac-hero__trust-number {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}

.pk-ac-hero__trust-icon {
  font-size: 1.125rem;
  flex-shrink: 0;
}

.pk-ac-hero__trust-label {
  font-size: 0.8125rem;
}

/* ============================================================
   2. Tool Container
   ============================================================ */

.pk-ac {
  max-width: 900px;
  margin: -1.5rem auto 3rem;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.04),
    0 6px 24px rgba(0, 0, 0, 0.06);
  position: relative;
  z-index: 1;
}

.pk-ac__inner {
  padding: 2.5rem;
}

/* ============================================================
   3. Progress Bar
   ============================================================ */

.pk-ac__progress {
  padding: 2rem 2.5rem 0;
}

.pk-ac__progress-track {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.pk-ac__progress-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.pk-ac__progress-steps {
  display: flex;
  justify-content: space-between;
}

.pk-ac__progress-step {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-align: center;
  flex: 1;
  transition: color 0.3s ease;
}

.pk-ac__progress-step.is-active {
  color: var(--color-primary);
}

.pk-ac__progress-step.is-complete {
  color: #16A34A;
}

/* ============================================================
   4. Step Container
   ============================================================ */

.pk-ac__step {
  display: none;
  opacity: 0;
  transform: translateY(16px);
}

.pk-ac__step.is-active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.pk-ac__step-title {
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-text);
  margin: 0 0 0.5rem;
}

.pk-ac__step-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 0 1.75rem;
}

/* ============================================================
   5. Species Cards (5-grid)
   ============================================================ */

.pk-ac__card-grid {
  display: grid;
  gap: 1rem;
}

.pk-ac__card-grid--5 {
  grid-template-columns: repeat(5, 1fr);
}

.pk-ac__card-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.pk-ac__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 140px;
  padding: 1.25rem 1rem;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  position: relative;
}

.pk-ac__card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light, #fff7f0);
  transform: scale(1.03);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.pk-ac__card.is-selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light, #fff7f0);
  box-shadow: 0 0 0 3px rgba(212, 88, 10, 0.15);
}

.pk-ac__card.is-selected::after {
  content: "\2713";
  position: absolute;
  top: 8px;
  right: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.pk-ac__card-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.pk-ac__card-label {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
}

.pk-ac__card-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ============================================================
   6. Bird Species Dropdown
   ============================================================ */

.pk-ac__select-wrap {
  max-width: 400px;
  margin: 0 auto 1.5rem;
}

.pk-ac__select {
  width: 100%;
  padding: 0.875rem 1.25rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-white);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.pk-ac__select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(212, 88, 10, 0.15);
}

/* ============================================================
   7. Age Input
   ============================================================ */

.pk-ac__age-form {
  max-width: 500px;
  margin: 0 auto 1.5rem;
}

.pk-ac__field-group {
  margin-bottom: 1.5rem;
}

.pk-ac__label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.pk-ac__input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-base);
  color: var(--color-text);
  transition: border-color 0.2s ease;
}

.pk-ac__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(212, 88, 10, 0.15);
}

.pk-ac__input--small {
  width: 80px;
  text-align: center;
  flex-shrink: 0;
}

.pk-ac__slider-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.pk-ac__slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
  transition: background 0.2s;
}

.pk-ac__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 3px solid var(--color-white);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  transition: transform 0.15s ease;
}

.pk-ac__slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.pk-ac__slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 3px solid var(--color-white);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* ============================================================
   8. Navigation Buttons
   ============================================================ */

.pk-ac__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.pk-ac__nav--center {
  justify-content: center;
}

.pk-ac__nav--back-only {
  justify-content: flex-start;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: none;
}

.pk-ac__btn-back {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.pk-ac__btn-back:hover {
  color: var(--color-primary);
}

.pk-ac__btn-next,
#pk-ac-calculate-btn {
  font-size: 0.9375rem;
  font-weight: 700;
}

.pk-ac__btn-next:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ============================================================
   9. Result Card
   ============================================================ */

.pk-ac__result {
  text-align: center;
}

.pk-ac__result-card {
  background: linear-gradient(135deg, #fffaf5 0%, #fff 100%);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  margin-bottom: 2rem;
  position: relative;
}

.pk-ac__result-species-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
}

.pk-ac__result-intro {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.pk-ac__result-number {
  font-size: clamp(3.5rem, 10vw, 5rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.25rem;
  letter-spacing: -0.03em;
}

.pk-ac__result-unit {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.pk-ac__result-badge {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.pk-ac__result-comparison {
  font-size: 1rem;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.6;
  max-width: 560px;
  margin: 0 auto 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
}

.pk-ac__result-milestone {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* Life Expectancy Bar */
.pk-ac__result-lifespan {
  max-width: 400px;
  margin: 0 auto 1.5rem;
}

.pk-ac__result-lifespan-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.pk-ac__result-lifespan-bar {
  height: 10px;
  background: var(--color-surface);
  border-radius: 5px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.pk-ac__result-lifespan-fill {
  height: 100%;
  border-radius: 5px;
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Share Button */
.pk-ac__share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pk-ac__share-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.pk-ac__share-btn svg {
  flex-shrink: 0;
}

/* ============================================================
   10. Health Guide (Accordion)
   ============================================================ */

.pk-ac__health-guide {
  text-align: left;
  margin-bottom: 2rem;
}

.pk-ac__health-guide-title {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 1rem;
  text-align: center;
}

.pk-ac__health-section {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.pk-ac__health-section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: none;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: left;
  transition: background 0.2s ease;
}

.pk-ac__health-section-header:hover {
  background: var(--color-border);
}

.pk-ac__health-section-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.pk-ac__health-section-title {
  flex: 1;
}

.pk-ac__health-chevron {
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.pk-ac__health-section-header.is-expanded .pk-ac__health-chevron {
  transform: rotate(180deg);
}

.pk-ac__health-section-body {
  padding: 1rem 1.25rem 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.pk-ac__health-section-body p {
  margin: 0 0 0.75rem;
}

.pk-ac__health-section-body ul {
  margin: 0;
  padding-left: 1.25rem;
}

.pk-ac__health-section-body li {
  margin-bottom: 0.5rem;
}

/* Avian vet note */
.pk-ac__avian-note {
  padding: 1rem 1.25rem;
  background: #FFF7ED;
  border: 1px solid #FDBA74;
  border-radius: var(--radius-md);
  margin-top: 1rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text);
}

/* ============================================================
   11. CTAs
   ============================================================ */

.pk-ac__result-ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.pk-ac__cta-btn {
  min-width: 200px;
  text-align: center;
  text-decoration: none;
}

/* ============================================================
   12. Email Capture
   ============================================================ */

.pk-ac__result-email {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.pk-ac__result-email-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 1rem;
}

.pk-ac__result-email-form {
  display: flex;
  gap: 0.5rem;
  max-width: 420px;
  margin: 0 auto 0.5rem;
}

.pk-ac__result-email-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-family: var(--font-base);
}

.pk-ac__result-email-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.pk-ac__result-email-btn {
  white-space: nowrap;
}

.pk-ac__result-email-note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin: 0;
}

.pk-ac__result-email-msg {
  font-size: 0.9375rem;
  color: #16A34A;
  font-weight: 600;
  margin: 0.5rem 0 0;
}

/* ============================================================
   13. Disclaimer
   ============================================================ */

.pk-ac__result-disclaimer {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  padding: 1rem 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  text-align: left;
}

.pk-ac__result-disclaimer p {
  margin: 0;
}

/* ============================================================
   14. Start Over
   ============================================================ */

.pk-ac__btn-start-over {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  cursor: pointer;
}

.pk-ac__btn-start-over:hover {
  color: var(--color-primary);
}

/* ============================================================
   15. Detailed Content Section (below tool)
   ============================================================ */

.pk-ac-content {
  padding: 3rem 2rem;
}

.pk-ac-content .section__title {
  text-align: center;
  margin-bottom: 2rem;
}

/* ============================================================
   16. FAQ Accordion
   ============================================================ */

.pk-ac-faq {
  padding: 3rem 2rem;
}

.pk-ac-faq__list {
  max-width: 720px;
  margin: 0 auto;
}

.pk-ac-faq__item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.pk-ac-faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--color-white);
  border: none;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: left;
  line-height: 1.4;
  transition: background 0.2s ease;
}

.pk-ac-faq__question:hover {
  background: var(--color-surface);
}

.pk-ac-faq__chevron {
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.pk-ac-faq__question.is-expanded .pk-ac-faq__chevron {
  transform: rotate(180deg);
}

.pk-ac-faq__answer {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.pk-ac-faq__answer p {
  margin: 0;
}

/* ============================================================
   16. Responsive — Tablet (768px - 1024px)
   ============================================================ */

@media (max-width: 1024px) {
  .pk-ac__inner {
    padding: 2rem;
  }

  .pk-ac__progress {
    padding: 1.5rem 2rem 0;
  }

  .pk-ac__card-grid--5 {
    grid-template-columns: repeat(3, 1fr);
  }

  .pk-ac__result-card {
    padding: 2.5rem 1.5rem;
  }
}

/* ============================================================
   17. Responsive — Mobile (<768px)
   ============================================================ */

@media (max-width: 768px) {
  .pk-ac-hero {
    padding: 3rem 1.25rem 2rem;
  }

  .pk-ac {
    margin: -1rem 1rem 2rem;
    border-radius: var(--radius-md);
  }

  .pk-ac__inner {
    padding: 1.5rem;
  }

  .pk-ac__progress {
    padding: 1.25rem 1.5rem 0;
  }

  .pk-ac__card-grid--5 {
    grid-template-columns: repeat(3, 1fr);
  }

  .pk-ac__card-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .pk-ac__card {
    min-height: 110px;
    padding: 1rem 0.75rem;
  }

  .pk-ac__card-icon {
    font-size: 2rem;
  }

  .pk-ac__step-title {
    font-size: 1.25rem;
  }

  .pk-ac__result-card {
    padding: 2rem 1.25rem;
  }

  .pk-ac__result-number {
    font-size: 3.5rem;
  }

  .pk-ac__result-comparison {
    font-size: 0.9375rem;
    padding: 0.75rem 1rem;
  }

  .pk-ac__result-email-form {
    flex-direction: column;
  }

  .pk-ac__result-ctas {
    flex-direction: column;
    align-items: center;
  }

  .pk-ac__cta-btn {
    width: 100%;
    max-width: 320px;
  }

  .pk-ac-hero__trust {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }

  .pk-ac__nav {
    flex-direction: column-reverse;
    gap: 0.75rem;
  }

  .pk-ac__nav--back-only {
    flex-direction: row;
  }
}

/* ============================================================
   18. Responsive — Small Mobile (<480px)
   ============================================================ */

@media (max-width: 480px) {
  .pk-ac-hero {
    padding: 2rem 1rem 1.5rem;
  }

  .pk-ac {
    margin: -0.75rem 0.5rem 1.5rem;
  }

  .pk-ac__inner {
    padding: 1.25rem;
  }

  .pk-ac__progress {
    padding: 1rem 1.25rem 0;
  }

  .pk-ac__progress-step {
    font-size: 0.6875rem;
  }

  .pk-ac__card-grid--5 {
    grid-template-columns: repeat(2, 1fr);
  }

  .pk-ac__card-grid--5 .pk-ac__card:last-child {
    grid-column: 1 / -1;
    max-width: 200px;
    margin: 0 auto;
  }

  .pk-ac__card-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .pk-ac__card {
    min-height: 100px;
    padding: 0.875rem 0.5rem;
    gap: 0.5rem;
  }

  .pk-ac__card-icon {
    font-size: 1.75rem;
  }

  .pk-ac__card-label {
    font-size: 0.8125rem;
  }

  .pk-ac__result-number {
    font-size: 3rem;
  }

  .pk-ac__result-card {
    padding: 1.5rem 1rem;
  }

  .pk-ac__health-section-header {
    padding: 0.875rem 1rem;
    font-size: 0.875rem;
  }

  .pk-ac__health-section-body {
    padding: 0.75rem 1rem 1rem;
    font-size: 0.875rem;
  }

  .pk-ac-faq__question {
    font-size: 0.875rem;
    padding: 0.875rem 1rem;
  }

  .pk-ac-faq__answer {
    font-size: 0.875rem;
    padding: 0 1rem 1rem;
  }

  .pk-ac__slider-wrap {
    flex-wrap: wrap;
  }

  .pk-ac__slider {
    min-width: 100%;
    order: 2;
  }

  .pk-ac__input--small {
    order: 1;
    margin-bottom: 0.5rem;
  }
}

/* ============================================================
   19. Print Styles
   ============================================================ */

@media print {
  .pk-ac-hero,
  .pk-ac__progress,
  .pk-ac__nav,
  .pk-ac__share-btn,
  .pk-ac__result-ctas,
  .pk-ac__result-email,
  .pk-ac__btn-start-over,
  .pk-ac-faq {
    display: none !important;
  }

  .pk-ac {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .pk-ac__result-card {
    border: 2px solid #ccc;
  }
}