/* ======================================================
   Puppy Weight Calculator - Playful Illustrated Design
   Fonts: Fraunces (serif) + Nunito (sans-serif)
   Mobile-first responsive
   ====================================================== */

/* ---- Design Tokens ---- */
:root {
  --color-bg: #FFF8F0;
  --color-card: #FFFCF8;
  --color-dark: #3B2F2F;
  --color-accent: #D4805A;
  --color-cream: #FFECD2;
  --color-tan: #9B8B7B;
  --color-muted: #8B7B6B;
  --color-input-border: #D8CCBC;
  --color-section-border: #E8DDD0;
  --color-badge-orange-bg: #FFECD2;
  --color-badge-orange-border: #E8C9A0;
  --color-badge-green-bg: #E8F0E0;
  --color-badge-green-border: #C4D8B0;
  --color-badge-blue-bg: #E0E8F4;
  --color-badge-blue-border: #B0C4D8;
  --radius-sm: 14px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --shadow-card: 6px 6px 0 #3B2F2F;
  --shadow-btn: 4px 4px 0 #3B2F2F;
  --shadow-btn-hover: 5px 5px 0 #3B2F2F;
  --shadow-item: 3px 3px 0 #3B2F2F;
}

/* ---- Reset ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--color-dark);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* ---- Dotted Background ---- */
.bg-dots {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
  pointer-events: none;
  background-image: radial-gradient(circle, #DCCFBF 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ---- Floating Dog Silhouettes ---- */
.dog-silhouette {
  position: fixed;
  pointer-events: none;
  z-index: 0;
  opacity: 0.12;
}

.dog-silhouette--1 {
  top: 60px;
  right: 40px;
  transform: rotate(-10deg);
}

.dog-silhouette--2 {
  bottom: 100px;
  left: 30px;
  transform: scaleX(-1) rotate(5deg);
}

.dog-silhouette--3 {
  top: 50%;
  right: 60px;
  transform: rotate(8deg);
}

/* ---- Layout ---- */
.container {
  max-width: 500px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 5;
}

.container--wide {
  max-width: 600px;
}

/* ---- Nav ---- */
.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 40px;
  position: relative;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.5s ease;
}

body.mounted .site-nav {
  opacity: 1;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-dark);
}

.nav-logo-circle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2.5px solid var(--color-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-cream);
  flex-shrink: 0;
}

.nav-logo-text {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 20px;
  color: var(--color-dark);
  font-weight: 600;
  letter-spacing: -0.5px;
}

.nav-logo-text .accent {
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  font-family: 'Nunito', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-dark);
}

/* ---- Hero ---- */
.hero {
  text-align: center;
  padding: 50px 20px 10px;
  position: relative;
  z-index: 5;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.7s ease 0.15s;
}

body.mounted .hero {
  opacity: 1;
  transform: translateY(0);
}

.hero-eyebrow {
  font-family: 'Nunito', sans-serif;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.hero-arrow {
  margin-bottom: 8px;
}

.hero h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(38px, 5.5vw, 64px);
  color: var(--color-dark);
  margin: 0 0 12px;
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -2px;
}

.hero h1 .italic-accent {
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
  position: relative;
  display: inline-block;
}

.hero h1 .italic-accent .sketch-underline {
  position: absolute;
  bottom: -2px;
  left: -4px;
  width: 110%;
}

.hero-subtitle {
  font-family: 'Nunito', sans-serif;
  font-size: 16px;
  color: var(--color-tan);
  max-width: 380px;
  margin: 0 auto;
  line-height: 1.6;
  font-weight: 400;
}

/* ---- Trust Badges ---- */
.trust-badges {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 24px;
  flex-wrap: wrap;
}

.trust-badge {
  font-family: 'Nunito', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: #6B5B4B;
  padding: 5px 14px;
  border-radius: 20px;
  display: inline-block;
}

.trust-badge--orange {
  background: var(--color-badge-orange-bg);
  border: 1.5px solid var(--color-badge-orange-border);
}

.trust-badge--green {
  background: var(--color-badge-green-bg);
  border: 1.5px solid var(--color-badge-green-border);
}

.trust-badge--blue {
  background: var(--color-badge-blue-bg);
  border: 1.5px solid var(--color-badge-blue-border);
}

/* ---- Card ---- */
.card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 2.5px solid var(--color-dark);
  box-shadow: var(--shadow-card);
  position: relative;
}

.card--light {
  border: 2px solid var(--color-section-border);
  box-shadow: none;
}

/* ---- Calculator Wrapper ---- */
.calculator-wrapper {
  max-width: 500px;
  margin: 36px auto 50px;
  padding: 0 20px;
  position: relative;
  z-index: 5;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.7s ease 0.3s;
}

body.mounted .calculator-wrapper {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Corner Decoration ---- */
.corner-star {
  position: absolute;
  top: 12px;
  right: 12px;
  opacity: 0.15;
}

/* ---- Sketch Line Divider ---- */
.sketch-line {
  width: 100%;
  display: block;
}

/* ---- Section Headers ---- */
.section-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 26px;
  color: var(--color-dark);
  text-align: center;
  font-weight: 800;
  margin-bottom: 24px;
}

.section-title .italic-accent {
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
}

/* ---- How It Works ---- */
.how-it-works {
  max-width: 500px;
  margin: 0 auto 70px;
  padding: 0 20px;
  position: relative;
  z-index: 5;
  opacity: 0;
  transition: all 0.7s ease 0.5s;
}

body.mounted .how-it-works {
  opacity: 1;
}

.how-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.how-item {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--color-card);
  border: 2px solid var(--color-section-border);
  transition: all 0.2s;
  cursor: default;
}

.how-item:hover {
  border-color: var(--color-dark);
  box-shadow: var(--shadow-item);
}

.how-item-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-cream);
  border: 2px solid var(--color-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Fraunces', Georgia, serif;
  font-size: 16px;
  font-weight: 800;
  color: var(--color-dark);
  flex-shrink: 0;
}

.how-item-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 2px;
}

.how-item-desc {
  font-family: 'Nunito', sans-serif;
  font-size: 13px;
  color: var(--color-tan);
  line-height: 1.5;
  font-weight: 400;
}

/* ---- Content Sections ---- */
.content-section {
  max-width: 500px;
  margin: 0 auto 40px;
  padding: 0 20px;
  position: relative;
  z-index: 5;
}

.content-section .card {
  padding: 28px 24px;
}

.content-section h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.content-section h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
  margin-top: 20px;
}

.content-section p {
  font-family: 'Nunito', sans-serif;
  color: var(--color-tan);
  margin-bottom: 14px;
  line-height: 1.7;
  font-size: 14px;
}

.content-section .section-subtitle {
  font-family: 'Nunito', sans-serif;
  font-size: 14px;
  color: var(--color-tan);
  margin-bottom: 20px;
}

/* ---- Size Table ---- */
.size-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 13px;
  font-family: 'Nunito', sans-serif;
}

.size-table th {
  background: var(--color-cream);
  padding: 10px 12px;
  text-align: left;
  font-weight: 700;
  color: var(--color-dark);
  border-bottom: 2px solid var(--color-input-border);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.size-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-section-border);
  color: var(--color-muted);
}

.size-table td strong {
  color: var(--color-dark);
  font-weight: 700;
}

.size-table tr:hover td {
  background: rgba(255, 236, 210, 0.3);
}

/* ---- FAQ ---- */
.faq-section {
  max-width: 500px;
  margin: 0 auto 40px;
  padding: 0 20px;
  position: relative;
  z-index: 5;
}

.faq-item {
  background: var(--color-card);
  border: 2px solid var(--color-section-border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: all 0.2s;
}

.faq-item:hover {
  border-color: var(--color-input-border);
}

.faq-item.open {
  border-color: var(--color-dark);
  box-shadow: var(--shadow-item);
}

.faq-question {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  font-size: 15px;
  color: var(--color-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 18px;
  user-select: none;
}

.faq-question::after {
  content: '+';
  font-family: 'Nunito', sans-serif;
  font-size: 20px;
  font-weight: 300;
  color: var(--color-input-border);
  transition: transform 0.2s;
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item.open .faq-question::after {
  content: '\2212';
  color: var(--color-accent);
}

.faq-answer {
  font-family: 'Nunito', sans-serif;
  color: var(--color-tan);
  line-height: 1.7;
  font-size: 14px;
  display: none;
  padding: 0 18px 16px;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ---- Growth Timeline Visual ---- */
.growth-timeline {
  margin: 20px 0;
}

.timeline-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.timeline-size {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-dark);
  width: 60px;
  flex-shrink: 0;
  text-align: right;
}

.timeline-bar {
  height: 28px;
  width: var(--bar-width);
  background: linear-gradient(135deg, var(--color-cream), var(--color-badge-orange-bg));
  border: 1.5px solid var(--color-badge-orange-border);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 100px;
}

.timeline-label {
  font-family: 'Nunito', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-dark);
  white-space: nowrap;
}

/* ---- Growth Stages ---- */
.stage-list {
  margin-top: 16px;
}

.stage-item {
  margin-bottom: 16px;
  padding: 14px 16px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-section-border);
}

.stage-item:last-child {
  margin-bottom: 0;
}

.stage-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.stage-badge {
  font-family: 'Nunito', sans-serif;
  font-size: 11px;
  font-weight: 700;
  color: #4B6B8B;
  background: var(--color-badge-blue-bg);
  border: 1.5px solid var(--color-badge-blue-border);
  padding: 3px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

.stage-name {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-dark);
}

.stage-item p {
  font-family: 'Nunito', sans-serif;
  color: var(--color-tan);
  line-height: 1.7;
  font-size: 14px;
  margin: 0;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-card);
  border-top: 2px solid var(--color-section-border);
  padding: 40px 0 24px;
  margin-top: 48px;
  position: relative;
  z-index: 5;
}

.site-footer .container {
  max-width: 600px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-about p {
  font-size: 13px;
  color: var(--color-tan);
  line-height: 1.6;
  margin-top: 8px;
}

.footer-links h4 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-dark);
}

.footer-links a {
  display: block;
  font-size: 13px;
  color: var(--color-tan);
  text-decoration: none;
  margin-bottom: 8px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-section-border);
  padding-top: 20px;
  font-size: 12px;
  color: var(--color-tan);
  text-align: center;
  line-height: 1.5;
}

/* ---- Animations ---- */
@keyframes popIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ---- Responsive ---- */

/* Desktop */
@media (min-width: 768px) {
  .how-it-works {
    max-width: 800px;
    margin-bottom: 80px;
  }

  .how-items {
    flex-direction: row;
    gap: 16px;
  }

  .how-item {
    flex: 1;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px 20px;
  }

  .content-section {
    max-width: 800px;
  }

  .content-section .card {
    padding: 40px 48px;
  }

  .content-section h2 {
    font-size: 26px;
  }

  .content-section h3 {
    font-size: 18px;
  }

  .content-section p {
    font-size: 15px;
  }

  .faq-section {
    max-width: 800px;
  }

  .faq-question {
    font-size: 16px;
    padding: 18px 22px;
  }

  .faq-answer {
    font-size: 15px;
    padding: 0 22px 18px;
  }

  .section-title {
    font-size: 32px;
    margin-bottom: 32px;
  }

  .site-footer .container {
    max-width: 800px;
  }

  .size-table {
    font-size: 14px;
  }
}

/* Mobile */
@media (max-width: 600px) {
  .site-nav {
    padding: 16px 20px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding: 30px 16px 10px;
  }

  .card {
    padding: 24px 20px;
    border-radius: 22px;
  }

  .calculator-wrapper {
    padding: 0 12px;
    margin: 24px auto 36px;
  }

  .how-it-works,
  .content-section,
  .faq-section {
    padding: 0 12px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .timeline-size {
    width: 50px;
    font-size: 12px;
  }

  .timeline-bar {
    min-width: 80px;
  }

  .stage-header {
    flex-wrap: wrap;
  }

  .trust-badges {
    gap: 8px;
  }

  .trust-badge {
    font-size: 11px;
    padding: 4px 10px;
  }

  .dog-silhouette--1 {
    right: 10px;
    top: 30px;
  }

  .dog-silhouette--3 {
    right: 10px;
  }
}

@media (max-width: 375px) {
  .hero h1 {
    font-size: 32px;
    letter-spacing: -1.5px;
  }

  .card {
    padding: 20px 16px;
    box-shadow: 4px 4px 0 var(--color-dark);
  }
}