:root {
  /* Paleta Principal: Cloud Dancer & Neutros */
  --color-cloud-dancer: #f0eee9; /* Off-white principal */
  --color-surface: #ffffff;      /* Branco para cartões */
  --color-surface-alt: #e6e3dc;  /* Borda e separadores */
  
  /* Tipografia & Contrastes */
  --color-text-primary: #1c1c1a;  /* Grafite escuro */
  --color-text-secondary: #63625e;/* Cinza para descrições */
  
  /* Acessibilidade & Interatividade */
  --color-accent: #2b2b29;        
  --color-accent-hover: #4a4945;  

  /* Variáveis de compatibilidade e estrutura */
  --color-bg: #ffffff;
  --color-border: var(--color-surface-alt);
  --color-text-main: #1a1a1a;
  --color-text-muted: var(--color-text-secondary);
  --color-primary: #121212;

  --cover-intro-bg: linear-gradient(135deg, #0052D4, #4364F7, #6FB1FC);
  --cover-intro-text: #ffffff;
  --cover-learning-bg: linear-gradient(135deg, #7F00FF, #E100FF);
  --cover-learning-text: #ffffff;
  --cover-ethics-bg: linear-gradient(135deg, #11998e, #38ef7d);
  --cover-ethics-text: #ffffff;

  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 16px 40px -12px rgba(0, 0, 0, 0.1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.dark-theme {
  background-color: var(--color-bg);
  color: var(--color-text-main);
  --color-cloud-dancer: #121214;
  --color-surface: #1e1e24;
  --color-surface-alt: #2d2d35;
  --color-text-primary: #f0f0f2;
  --color-text-secondary: #a0a0a8;
  --color-accent: #f0f0f2;
  --color-accent-hover: #ffffff;
  --color-bg: #121214;
  --color-border: #2d2d35;
  --color-text-main: #f0f0f2;
  --color-text-muted: #a0a0a8;
  --color-primary: #2d2d35;
  --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 16px 40px -12px rgba(0, 0, 0, 0.45);
}

body.dark-theme .site-header {
  background-color: rgba(30, 30, 36, 0.9);
}

body.dark-theme .button-primary,
body.dark-theme .btn-primary {
  color: #f0f0f2;
}

body.dark-theme .button-primary:hover,
body.dark-theme .btn-primary:hover {
  background-color: #1e1e24;
}

body.dark-theme #metodologia .material-item {
  background: #1e1e24;
  border-color: #2d2d35;
}

body.dark-theme .site-footer {
  border-top-color: #2d2d35;
}

.card, .material-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-surface-alt);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover,
.material-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.card-description, .card-caption {
  color: var(--color-text-secondary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 20px 5vw;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  object-fit: cover;
  flex-shrink: 0;
}

.brand-light {
  font-weight: 400;
  color: var(--color-text-muted);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}

.main-nav {
  display: flex;
  flex: 1;
  justify-content: center;
  gap: 32px;
}

.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.main-nav a:hover {
  color: var(--color-primary);
}

.header-link {
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  transition: all var(--transition-fast);
}

.theme-toggle-switch {
  position: relative;
  width: 70px;
  height: 36px;
  flex: 0 0 auto;
  padding: 0;
  overflow: visible;
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 30px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(255, 255, 255, 0.45));
  color: var(--color-text-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-switch:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.theme-toggle-switch:active {
  transform: scale(0.97);
}

.switch-track {
  position: absolute;
  inset: 0;
  display: block;
  border-radius: inherit;
}

.switch-icon {
  position: absolute;
  z-index: 1;
  top: 50%;
  display: grid;
  width: 18px;
  height: 18px;
  place-items: center;
  transform: translateY(-50%);
}

.icon-sun {
  left: 7px;
}

.icon-sun,
.icon-sun *,
.icon-sun svg,
.icon-sun svg * {
  color: #ffffff !important;
  fill: #ffffff !important;
  stroke: #ffffff !important;
  filter: brightness(0) invert(1) !important;
}

.icon-moon {
  right: 7px;
}

.icon-moon,
.icon-moon *,
.icon-moon svg,
.icon-moon svg * {
  color: #000000 !important;
  fill: #000000 !important;
  stroke: #000000 !important;
  filter: brightness(0) !important;
}

.switch-icon svg {
  display: block;
  width: 18px;
  height: 18px;
  color: #ffffff;
  stroke: #ffffff;
}

.switch-thumb {
  position: absolute;
  z-index: 2;
  top: 3px;
  left: 3px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(30, 41, 59, 0.25);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-switch:hover .switch-thumb {
  transform: scale(1.05);
}

body.dark-theme .theme-toggle-switch {
  border-color: rgba(168, 85, 247, 0.55);
  background: linear-gradient(135deg, #21123f, #102b55);
  color: #f0e7ff;
  box-shadow: inset 0 2px 8px rgba(3, 7, 18, 0.55), 0 0 12px rgba(168, 85, 247, 0.4);
}

body.dark-theme .switch-thumb {
  transform: translateX(34px);
  background: linear-gradient(135deg, #e879f9, #a855f7);
  box-shadow: 0 0 10px rgba(217, 70, 239, 0.7), 0 0 18px rgba(168, 85, 247, 0.45);
}

body.dark-theme .theme-toggle-switch:hover .switch-thumb {
  transform: translateX(34px) scale(1.05);
}

.header-link:hover {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  padding: 80px 5vw 100px;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.hero-copy h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  line-height: 1.1;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-copy h1 em {
  font-style: italic;
  color: var(--color-accent);
}

.hero-description {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  max-width: 520px;
  line-height: 1.5;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.button-primary,
.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
  transition: all 0.3s ease;
}

.button-primary:hover,
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
  background-color: #000;
}

.button-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.button-secondary:hover {
  background-color: var(--color-surface-alt);
  border-color: var(--color-primary);
}

.hero-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  max-width: 100%;
  margin-top: 24px;
  margin-bottom: 3rem;
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
}

.hero-visual {
  position: relative;
}

.hero-image {
  width: 100%;
  height: 480px;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.visual-label {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 260px;
  z-index: 2;
}

.label-kicker {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.label-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text-primary);
}

.label-caption {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.visual-stamp {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.15;
  box-shadow: var(--shadow-card);
  z-index: 2;
}

.section-wrap {
  padding: 80px 5vw;
  max-width: 1400px;
  margin: 0 auto;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 48px;
  gap: 24px;
}

.section-heading h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 400;
  line-height: 1.2;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-primary);
  white-space: nowrap;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.text-link:hover {
  color: var(--color-accent-hover);
  transform: translateX(4px);
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.cards-grid,
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  align-items: stretch;
  justify-content: center;
  gap: 2rem;
}

.material-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.material-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.steps-card,
.card,
.cards-grid .material-item {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 2rem;
  box-sizing: border-box;
  text-align: left;
}

.steps-card .material-category,
.card .material-category {
  margin: 0 0 0.5rem;
  text-align: left;
}

.steps-card h3,
.steps-card p,
.card h3,
.card p {
  text-align: left;
}

.steps-card .material-description,
.card .material-description {
  margin: 0.75rem 0 0;
}

.material-card-link:hover .material-item,
.material-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.cover {
  height: 280px;
  border-radius: var(--radius-sm);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
  color: #ffffff;
}

/* Paleta Tech Vibrante nas Capas dos Cartões */
.card-thumb-1,
.cover-intro {
  background: linear-gradient(135deg, #0052D4, #4364F7, #6FB1FC);
  color: #ffffff;
}

.card-thumb-2,
.cover-learning {
  background: linear-gradient(135deg, #7F00FF, #E100FF);
  color: #ffffff;
}

.card-thumb-3,
.cover-ethics {
  background: linear-gradient(135deg, #11998e, #38ef7d);
  color: #ffffff;
}

/* Tipografia das capas com 100% de contraste e legibilidade */
.cover,
.cover-index,
.cover-title,
.cover-footer,
.card-thumb-1,
.card-thumb-2,
.card-thumb-3,
.card-thumb-1 *,
.card-thumb-2 *,
.card-thumb-3 * {
  color: #ffffff;
}

.cover-index {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  opacity: 1;
  white-space: nowrap;
}

.cover-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  line-height: 1.2;
  z-index: 2;
  color: #ffffff;
}

.cover-footer {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  opacity: 1;
  color: #ffffff;
}

.cover-art {
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  opacity: 0.15;
  border: 20px solid currentColor;
  pointer-events: none;
}

.cover-art-grid {
  border-radius: var(--radius-sm);
  transform: rotate(45deg);
}

.cover-art-orbit {
  border-style: dashed;
}

.cover-art-sun {
  box-shadow: 0 0 0 10px currentColor;
}

.card-caption,
.material-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.card-number,
.material-number,
.step-number,
.page-number,
.cover-index {
  white-space: nowrap;
}

.material-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.material-arrow {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.material-card-link:hover .material-arrow {
  transform: translate(3px, -3px);
  color: var(--color-primary);
}

.material-category {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.card-title,
.material-title,
.material-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  word-wrap: break-word;
}

.card-description,
.material-description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-top: 8px;
}

/* Metodologia / Como funciona (Layout de Etapas) */
#metodologia {
  border-top: 1px solid var(--color-border);
}

#metodologia .cover {
  display: none;
}

#metodologia .material-item {
  background: #ffffff;
  border: 1px solid #eef0f2;
  border-top: none;
  position: relative;
  overflow: hidden;
}

#metodologia .material-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  border-radius: 16px 16px 0 0;
  transition: height 0.3s ease, box-shadow 0.3s ease;
}

#metodologia .material-grid > .material-item:nth-child(1)::before {
  background: linear-gradient(90deg, #0052D4, #4364F7, #6FB1FC);
}

#metodologia .material-grid > .material-item:nth-child(2)::before {
  background: linear-gradient(90deg, #7F00FF, #E100FF);
}

#metodologia .material-grid > .material-item:nth-child(3)::before {
  background: linear-gradient(90deg, #11998e, #38ef7d);
}

#metodologia .material-item:hover::before {
  height: 6px;
}

#metodologia .material-grid > .material-item:nth-child(1):hover::before {
  box-shadow: 0 0 12px rgba(67, 100, 247, 0.6);
}

#metodologia .material-grid > .material-item:nth-child(2):hover::before {
  box-shadow: 0 0 12px rgba(225, 0, 255, 0.6);
}

#metodologia .material-grid > .material-item:nth-child(3):hover::before {
  box-shadow: 0 0 12px rgba(56, 239, 125, 0.6);
}

.process-pill {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 100px;
  background: var(--color-surface);
  border: 1px solid var(--color-surface-alt);
  color: var(--color-text-secondary);
  white-space: nowrap;
  align-self: center;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.process-card {
  background: var(--color-surface);
  border: 1px solid var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
  box-shadow: var(--shadow-soft);
}

.process-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-accent-hover);
}

.process-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent);
}

.process-card-1::before {
  background: var(--cover-intro-bg);
}

.process-card-2::before {
  background: var(--cover-learning-bg);
}

.process-card-3::before {
  background: var(--cover-ethics-bg);
}

.process-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.process-number {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  line-height: 1;
  font-weight: 400;
  color: var(--color-text-primary);
  opacity: 0.85;
  letter-spacing: -0.03em;
}

.process-phase {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border-radius: 100px;
  background-color: var(--color-surface-alt);
  color: var(--color-text-primary);
  text-transform: uppercase;
}

.process-card-body {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.process-category {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.process-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.25;
  color: var(--color-text-primary);
  margin-bottom: 8px;
  word-wrap: break-word;
}

.process-focus {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--color-surface-alt);
}

.process-focus strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.process-description {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.process-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--color-surface-alt);
  font-size: 0.8rem;
}

.process-module {
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.process-step-indicator {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.78rem;
}

.product-hero {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 60px;
  align-items: flex-start;
  padding-top: 60px;
}

.product-visual {
  height: 480px;
  margin-bottom: 0;
  box-shadow: var(--shadow-card);
}

.product-copy h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  line-height: 1.1;
  font-weight: 400;
  margin-bottom: 20px;
}

.product-meta {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 24px 0;
  margin: 32px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.product-meta li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.product-meta strong {
  color: var(--color-text-main);
  font-weight: 600;
}

.product-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.product-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-lg);
  margin-top: 20px;
}

.details-column h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-list li {
  position: relative;
  padding-left: 28px;
  font-size: 1.05rem;
  color: var(--color-text-main);
}

.feature-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.mini-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.mini-item .cover {
  height: 200px;
}

.about {
  padding: 80px 5vw;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--color-border);
}

.about-inner {
  max-width: 680px;
}

.about-inner h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 20px;
}

.about-inner h2 em {
  font-style: italic;
  color: var(--color-accent);
}

.about-inner p:not(.eyebrow) {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.watermark,
.about-symbol {
  position: absolute;
  right: 5vw;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-size: 10rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-surface-alt);
  opacity: 0.5;
  pointer-events: none;
  user-select: none;
}

.footer,
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  padding-bottom: 40px;
  padding-left: 5vw;
  padding-right: 5vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.back-top:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

@media (max-width: 900px) {
  .site-header {
    flex-wrap: wrap;
  }

  .main-nav {
    gap: 20px;
  }

  .product-hero {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .product-visual {
    height: 360px;
  }

  .product-details {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .process-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 600px) {
  .cards-grid,
  .steps-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-header {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px 12px;
    padding: 12px 5vw;
  }

  .brand {
    order: 1;
    gap: 8px;
    font-size: 1rem;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
  }

  .nav-actions {
    order: 2;
    width: auto;
    flex-direction: row;
    gap: 8px;
    margin-left: 0;
  }

  .main-nav {
    order: 3;
    flex: 0 0 100%;
    width: 100%;
    justify-content: flex-start;
    flex-wrap: nowrap;
    gap: 18px;
    overflow-x: auto;
    padding: 2px 0 4px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .main-nav::-webkit-scrollbar {
    display: none;
  }

  .main-nav a {
    flex: 0 0 auto;
    font-size: 0.88rem;
  }

  .header-link {
    display: none;
  }

  @media (max-width: 360px) {
    .main-nav {
      flex-wrap: wrap;
      gap: 4px 12px;
      overflow: visible;
    }

    .main-nav a {
      font-size: 0.82rem;
    }
  }

  .product-meta {
    grid-template-columns: 1fr;
  }

  .hero-image {
    height: 380px;
  }

  .visual-label {
    left: 16px;
    bottom: 16px;
    padding: 12px 16px;
    max-width: calc(100% - 32px);
  }

  .visual-stamp {
    top: 16px;
    right: 16px;
    width: 56px;
    height: 56px;
    font-size: 0.75rem;
  }

  .site-footer {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}


.main-nav a.ativo {
  color: var(--color-text-main);
  font-weight: 700;
  border-bottom: 2px solid currentColor;
}

button.button {
  border: none;
  cursor: pointer;
  font-family: inherit;
}

button.button-secondary {
  border: 1px solid var(--color-border);
}

body.dark-theme .button-secondary {
  color: var(--color-text-main);
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.breadcrumb a {
  text-decoration: underline;
}

.breadcrumb a:hover {
  color: var(--color-text-main);
}

.breadcrumb-produto {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 400;
  line-height: 1.15;
}

.page-intro {
  margin-top: 12px;
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 560px;
}

.card-tags {
  display: flex;
  gap: 8px;
  margin-top: auto;
  padding-top: 16px;
}

.tag {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.faq {
  border-top: 1px solid var(--color-border);
}

.faq-titulo {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 400;
  margin-bottom: 24px;
}

.faq-lista {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 800px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  transition: border-color var(--transition-fast);
}

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

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  line-height: 1;
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin-top: 12px;
  color: var(--color-text-muted);
}

.popup {
  margin: auto;
  max-width: 440px;
  width: calc(100% - 32px);
  padding: 32px;
  border: none;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text-main);
  box-shadow: var(--shadow-card);
}

.popup::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.popup h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.6rem;
  line-height: 1.2;
  margin-bottom: 12px;
}

.popup p {
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.popup-botoes {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.popup .button {
  padding: 12px 24px;
}

.atalhos {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 10px;
}

.atalho {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 100px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.atalho:hover {
  transform: translateY(-2px);
}

.atalho svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.atalho-whatsapp {
  background: var(--color-surface);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.atalho-whatsapp:hover {
  border-color: var(--color-text-main);
}

.atalho-chat {
  background: var(--color-primary);
  color: #ffffff;
  border: 1px solid var(--color-primary);
}

.atalho-chat:hover {
  background: #000000;
}

body.dark-theme .atalho-chat {
  border-color: var(--color-text-muted);
}

.chat-janela {
  position: fixed;
  right: 24px;
  bottom: 96px;
  z-index: 210;
  width: 380px;
  max-width: calc(100vw - 32px);
  height: 580px;
  max-height: calc(100vh - 140px);
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  text-align: left;
}

.chat-janela[hidden] {
  display: none;
}

.chat-topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.chat-topo strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
}

.chat-topo span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.chat-fechar {
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-main);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}

.chat-fechar:hover {
  border-color: var(--color-text-main);
}

.chat-mensagens {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  line-height: 1.45;
  white-space: normal;
  overflow-wrap: anywhere;
}

.chat-msg-bot a {
  color: var(--color-primary);
  text-underline-offset: 2px;
}

.chat-resposta-titulo {
  margin: 2px 0 7px;
  font-family: var(--font-serif);
  font-size: 1.02rem;
  font-weight: 400;
  line-height: 1.3;
}

.chat-resposta-paragrafo {
  margin: 0 0 8px;
}

.chat-resposta-paragrafo:last-child {
  margin-bottom: 0;
}

.chat-resposta-lista {
  display: grid;
  gap: 5px;
  margin: 0 0 9px;
  padding-left: 20px;
}

.chat-msg-bot {
  align-self: flex-start;
  background: var(--color-cloud-dancer);
  border-bottom-left-radius: 4px;
}

.chat-indicador-digitando {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-width: 42px;
  min-height: 20px;
}

.chat-indicador-digitando span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-text-muted);
  animation: chat-pulsar 1.2s ease-in-out infinite;
}

.chat-indicador-digitando span:nth-child(2) {
  animation-delay: 0.16s;
}

.chat-indicador-digitando span:nth-child(3) {
  animation-delay: 0.32s;
}

@keyframes chat-pulsar {
  0%, 60%, 100% { opacity: 0.38; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-4px); }
}

@media (prefers-reduced-motion: reduce) {
  .chat-indicador-digitando span {
    animation: none;
    opacity: 0.7;
  }
}

.chat-msg-usuario {
  align-self: flex-end;
  background: var(--color-primary);
  color: #ffffff;
  border-bottom-right-radius: 4px;
}

.chat-perguntas {
  padding: 12px 20px;
  border-top: 1px solid var(--color-border);
}

.chat-perguntas summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.chat-perguntas summary::-webkit-details-marker {
  display: none;
}

.chat-perguntas summary::after {
  content: "▼";
  font-size: 0.7rem;
}

.chat-perguntas:not([open]) summary::after {
  content: "▲";
}

.chat-perguntas summary:hover {
  color: var(--color-text-main);
}

.chat-perguntas-lista {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.chat-pergunta {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  background: transparent;
  color: var(--color-text-main);
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.chat-pergunta:hover {
  border-color: var(--color-text-main);
  background: var(--color-cloud-dancer);
}

.chat-form {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
}

.chat-form input {
  flex: 1;
  min-width: 0;
  font: inherit;
  font-size: 0.92rem;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  background: var(--color-bg);
  color: var(--color-text-main);
}

.chat-form button {
  padding: 10px 18px;
  border: none;
  border-radius: 100px;
  background: var(--color-primary);
  color: #ffffff;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
}

body.dark-theme .chat-form button,
body.dark-theme .chat-msg-usuario {
  background: #f0f0f2;
  color: #121214;
}

.contato {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  border-top: 1px solid var(--color-border);
}

.contato-texto p:not(.eyebrow) {
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.contato-lista {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contato-lista a {
  text-decoration: underline;
}

.contato-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
}

.contato-form label {
  font-weight: 600;
  font-size: 0.9rem;
}

.contato-form input,
.contato-form textarea {
  font: inherit;
  padding: 10px 14px;
  margin-bottom: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text-main);
}

.contato-form textarea {
  resize: none;
}

.contato-form button {
  align-self: flex-start;
  margin-top: 8px;
}

.form-aviso {
  font-weight: 600;
  color: #15803d;
}

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

@media (max-width: 600px) {
  .atalhos {
    right: 16px;
    bottom: 16px;
  }

  .atalho {
    padding: 12px 16px;
  }

  .chat-janela {
    right: 16px;
    bottom: 84px;
  }
}

body.dark-theme .text-link {
  color: var(--color-text-main);
}

body.dark-theme .button-primary {
  border: 1px solid var(--color-text-muted);
}

.site-footer {
  padding-bottom: 100px;
}

@media (max-width: 600px) {
  .section-heading {
    flex-direction: column;
    align-items: flex-start;
  }
}

.material-info h2 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
}

body.dark-theme .form-aviso {
  color: #4ade80;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }
}