/* Criança ativa — caderno de parque */
:root {
  --paper: #f6efe4;
  --paper-deep: #ead9c0;
  --ink: #2a2118;
  --ink-soft: #5c4e42;
  --terracotta: #c24e1d;
  --terracotta-deep: #9a3912;
  --sage: #2a6b55;
  --sage-soft: #e4f1ea;
  --dusk: #4a3f8c;
  --dusk-soft: #e8e4f6;
  --sun: #e8a317;
  --card: #fffbf5;
  --border: #d9c3a6;
  --shadow: #c9b08c;
  --focus: #c24e1d;
  --header-h: 4.5rem;
  --radius: 1.25rem;
  --radius-lg: 1.75rem;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --font-display: "Fraunces", "Palatino Linotype", Palatino, serif;
  --font-body: "Nunito", "Segoe UI", system-ui, sans-serif;
  --measure: 42rem;
  --page: 72rem;
  --clay:
    0 1px 0 rgba(255, 255, 255, 0.7) inset,
    0 8px 0 color-mix(in srgb, var(--shadow) 70%, transparent),
    0 14px 28px rgba(42, 33, 24, 0.08);
  --clay-press:
    0 1px 0 rgba(255, 255, 255, 0.7) inset,
    0 3px 0 color-mix(in srgb, var(--shadow) 80%, transparent),
    0 6px 12px rgba(42, 33, 24, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, #fbe9c8 0, transparent 28%),
    radial-gradient(circle at 92% 18%, #e7f0e4 0, transparent 24%),
    var(--paper);
  min-height: 100dvh;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 80;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Ccircle cx='2' cy='3' r='1' fill='%232A2118'/%3E%3Ccircle cx='46' cy='18' r='0.8' fill='%232A2118'/%3E%3Ccircle cx='22' cy='52' r='1' fill='%232A2118'/%3E%3Ccircle cx='68' cy='61' r='0.7' fill='%232A2118'/%3E%3C/svg%3E");
}

img,
svg {
  max-width: 100%;
  display: block;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
  color: var(--ink);
}

h1 {
  font-size: clamp(2rem, 4.4vw, 3.35rem);
  font-weight: 600;
  margin: 0 0 var(--space-5);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 600;
  margin: 0;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 var(--space-3);
}

p {
  margin: 0 0 var(--space-4);
  max-width: var(--measure);
  hyphens: none;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--terracotta-deep);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--terracotta);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  z-index: 200;
  background: var(--ink);
  color: var(--card);
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  text-decoration: none;
  font-weight: 700;
}

.skip-link:focus {
  top: 0.75rem;
  color: var(--card);
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  z-index: 120;
  background: transparent;
}

.progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--terracotta), var(--sun));
  transform: scaleX(0);
  transform-origin: left center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 3px solid color-mix(in srgb, var(--border) 80%, transparent);
}

.header-inner {
  max-width: var(--page);
  margin: 0 auto;
  min-height: 4.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-5);
  padding:
    max(0.6rem, env(safe-area-inset-top))
    max(1rem, env(safe-area-inset-right))
    0.6rem
    max(1rem, env(safe-area-inset-left));
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  min-height: 44px;
}

.brand-mark {
  flex: none;
  border-radius: 12px;
}

.toc {
  flex: 1 1 16rem;
  min-width: 0;
}

.toc-list {
  list-style: none;
  display: flex;
  gap: 0.2rem;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.toc-list::-webkit-scrollbar {
  display: none;
}

a,
button {
  touch-action: manipulation;
}

.toc-list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 0.85rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
  cursor: pointer;
}

.toc-list a:hover,
.toc-list a[aria-current="true"] {
  background: var(--card);
  color: var(--terracotta-deep);
  box-shadow: 0 2px 0 var(--border);
}

main {
  max-width: var(--page);
  margin: 0 auto;
  padding:
    var(--space-6)
    max(1rem, env(safe-area-inset-right))
    var(--space-8)
    max(1rem, env(safe-area-inset-left));
}

.hero {
  display: grid;
  gap: var(--space-6);
  align-items: center;
  margin-bottom: var(--space-7);
}

.kicker {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: var(--space-3);
}

.lede {
  font-size: 1.2rem;
  max-width: 40rem;
}

.hero-art svg {
  width: 100%;
  height: auto;
  border: 3px solid var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--clay);
}

.section {
  margin-bottom: var(--space-8);
}

.section-head {
  margin-bottom: var(--space-5);
  max-width: 40rem;
}

.section-index {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--terracotta);
  margin-bottom: var(--space-2);
}

.section p,
.session-card p,
.oms-card p,
.ref-card p,
.tips li,
.resumo p,
.ressalva p,
.disclaimer {
  color: var(--ink);
}

.chem-grid,
.week-plan,
.oms-grid,
.refs {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  display: grid;
  gap: var(--space-5);
}

.chem-card,
.session-card,
.oms-card,
.ref-card,
.resumo,
.ressalva,
.rain-note {
  background: var(--card);
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--clay);
}

.chem-card {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.chem-card--dopamine {
  border-color: var(--terracotta);
}

.chem-card--nora {
  border-color: var(--sage);
}

.chem-card--adeno {
  border-color: var(--dusk);
}

.chem-icon {
  width: 3.5rem;
  height: 3.5rem;
}

.chem-role {
  font-weight: 700;
  color: var(--ink-soft);
  margin: 0;
}

.resumo,
.ressalva {
  padding: var(--space-5);
  max-width: none;
}

.resumo {
  background: #f8efd9;
  border-color: var(--terracotta);
}

.resumo p,
.ressalva p {
  max-width: none;
}

.week-plan {
  counter-reset: none;
}

.session-card {
  padding: var(--space-5);
  position: relative;
}

.session-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--card);
  background: var(--terracotta);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  margin-bottom: var(--space-4);
}

.session-icon {
  margin-bottom: var(--space-3);
}

.rain-note {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
  background: #e8f1f6;
  border-color: var(--dusk);
}

.rain-note p {
  margin: 0;
  max-width: none;
}

.subhead {
  margin: var(--space-6) 0 var(--space-4);
}

.oms-card {
  padding: var(--space-5);
}

.oms-age {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.oms-source {
  color: var(--ink-soft);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: var(--space-4);
}

.oms-card ul,
.tips {
  margin: 0;
  padding: 0;
  list-style: none;
}

.oms-card li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.65rem;
}

.oms-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--sage);
}

.oms-note {
  font-weight: 700;
  max-width: none;
}

.tips {
  display: grid;
  gap: var(--space-3);
}

.tips li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--card);
  border: 3px solid var(--border);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  min-height: 48px;
}

.tips svg {
  flex: none;
}

.refs {
  gap: var(--space-5);
}

.refs > li {
  display: flex;
}

.refs > li > .ref-card {
  width: 100%;
}

.ref-card {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  height: 100%;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.ref-year {
  align-self: flex-start;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  background: var(--sage-soft);
  color: var(--sage);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  margin: 0;
}

.ref-card h3 {
  font-size: 1.1rem;
  margin: 0;
}

.ref-title {
  font-style: italic;
  color: var(--ink-soft);
  margin: 0;
}

.ref-meta {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0;
}

.ref-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 800;
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}

.ref-card:hover {
  transform: translateY(-3px);
}

.ressalva {
  background: var(--dusk-soft);
  border-color: var(--dusk);
}

.conclusion {
  background: var(--card);
  border: 3px solid var(--ink);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--clay);
}

.conclusion .section-head {
  margin-bottom: var(--space-4);
}

.conclusion-path {
  margin-top: var(--space-5);
}

.conclusion-path a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.7rem 1.25rem;
  background: var(--terracotta);
  color: #fffbf5;
  text-decoration: none;
  font-weight: 800;
  border-radius: 999px;
  border: 3px solid var(--ink);
  box-shadow: var(--clay);
  cursor: pointer;
}

.conclusion-path a:hover {
  color: #fffbf5;
  transform: translateY(-2px);
}

.conclusion-path a:active {
  transform: translateY(2px);
  box-shadow: var(--clay-press);
}

.site-footer {
  background: var(--ink);
  color: #f6efe4;
  padding:
    var(--space-7)
    max(1rem, env(safe-area-inset-right))
    max(var(--space-7), env(safe-area-inset-bottom))
    max(1rem, env(safe-area-inset-left));
}

.footer-inner {
  max-width: var(--page);
  margin: 0 auto;
}

.disclaimer {
  color: #f6efe4;
  max-width: 40rem;
  margin-top: var(--space-4);
  font-size: 1.05rem;
}

@media (min-width: 720px) {
  .hero {
    grid-template-columns: 1.05fr 0.95fr;
    gap: var(--space-7);
  }

  .chem-grid,
  .week-plan,
  .oms-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

@media (min-width: 1080px) {
  .refs {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .week-plan {
    position: relative;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .ref-card:hover,
  .conclusion-path a:hover,
  .conclusion-path a:active {
    transform: none;
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 9.5rem;
  }

  .toc {
    flex: 1 1 100%;
  }

  .header-inner {
    min-height: auto;
  }

  .toc-list {
    flex-wrap: wrap;
    overflow: visible;
  }

  .toc-list a {
    padding: 0 0.55rem;
    font-size: 0.88rem;
  }
}

@media (max-width: 479px) {
  body {
    font-size: 1.05rem;
  }

  .tips li {
    border-radius: var(--radius);
    align-items: flex-start;
  }

  .hero-art svg {
    border-width: 2.5px;
  }
}