/* ==========================================================================
   Clínica Dentária Graça Ferraz — Sobre nós / A clínica
   Direção Visual: Arquivo Vivo (Editorial Documental)
   ========================================================================== */

/* --- Tokens Específicos da Página Sobre Nós --- */
:root {
  --petroleum: #36545A;          /* Azul petróleo documental */
  --bg-archive: #E9E5DD;         /* Papel de arquivo para cronologia */
  --bg-dark-principles: #1E1D1A; /* Carvão profundo para princípios */
  --accent-document: #A88C76;    /* Acento taupe de arquivo */
  --text-muted-contrast: #544E47;/* Cinza escuro de alto contraste (>= 4.5:1 sobre marfim) */
}

/* --- Estado Ativo de Navegação --- */
.nav-link.is-active,
.mobile-menu-drawer .nav-link.is-active {
  color: var(--text-main);
  font-weight: 600;
}

.nav-link.is-active::after {
  width: 100%;
  background-color: var(--action);
}

/* --- Ajuste de Densidade e Separação no Header Desktop --- */
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: nowrap;
}

.brand {
  flex-shrink: 0;
}

.nav-desktop {
  display: none;
}

@media (min-width: 992px) {
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: 24px;
  }
}

@media (min-width: 1200px) {
  .nav-desktop {
    gap: 32px;
  }
}

.nav-link {
  font-size: 0.9rem;
  white-space: nowrap;
}

.header-actions {
  display: none;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .header-actions {
    display: flex;
  }
}

@media (min-width: 992px) and (max-width: 1140px) {
  .nav-desktop {
    gap: 16px;
  }
  .nav-link {
    font-size: 0.85rem;
  }
  .header-actions {
    gap: 12px;
  }
  .header-phone span {
    display: none; /* Oculta texto redundante em telas médias preservando o ícone/link */
  }
  .header-actions .btn {
    padding: 10px 16px;
    font-size: 0.85rem;
  }
}

/* --- 1. Hero: #hero (Visível imediatamente no First Paint) --- */
.about-hero-section {
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 72px;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

@media (min-width: 992px) {
  .about-hero-section {
    padding-top: calc(var(--header-height) + 64px);
    padding-bottom: 96px;
  }
}

.about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 992px) {
  .about-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 64px;
  }
}

.about-hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  opacity: 1;
}

.about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--petroleum);
}

.about-eyebrow::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--petroleum);
}

.about-hero-title {
  font-family: var(--font-sans);
  font-size: 2.25rem;
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-main);
  text-wrap: balance;
}

@media (min-width: 768px) {
  .about-hero-title {
    font-size: 3.1rem;
  }
}

@media (min-width: 1200px) {
  .about-hero-title {
    font-size: 3.6rem;
  }
}

.about-hero-support {
  font-size: 1.12rem;
  color: var(--text-muted-contrast);
  line-height: 1.65;
  max-width: 560px;
}

.about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding-top: 12px;
}

.about-hero-media {
  position: relative;
  opacity: 1;
}

.about-hero-frame {
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  padding: 8px;
  box-shadow: 0 12px 36px rgba(30, 29, 26, 0.04);
}

.about-hero-img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  display: block;
}

/* --- 2. Origem: #origem --- */
.about-origem-section {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding-top: 80px;
  padding-bottom: 80px;
}

@media (min-width: 992px) {
  .about-origem-section {
    padding-top: 104px;
    padding-bottom: 104px;
  }
}

.about-origem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 992px) {
  .about-origem-grid {
    grid-template-columns: 260px 1fr;
    gap: 64px;
    align-items: start;
  }
}

.about-origem-meta {
  padding-top: 6px;
}

.about-meta-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--petroleum);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--petroleum);
}

.about-origem-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 760px;
}

.about-origem-title {
  font-family: var(--font-sans);
  font-size: 1.85rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

@media (min-width: 768px) {
  .about-origem-title {
    font-size: 2.35rem;
  }
}

.about-origem-text {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--text-muted-contrast);
}

/* --- 3. Cronologia: #cronologia --- */
.about-chronology-section {
  background-color: var(--bg-archive);
  border-bottom: 1px solid var(--border-subtle);
  padding-top: 88px;
  padding-bottom: 88px;
}

@media (min-width: 992px) {
  .about-chronology-section {
    padding-top: 112px;
    padding-bottom: 112px;
  }
}

.chronology-header {
  margin-bottom: 56px;
  max-width: 680px;
}

.about-section-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--petroleum);
  margin-bottom: 12px;
}

.chronology-title {
  font-family: var(--font-sans);
  font-size: 1.85rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

@media (min-width: 768px) {
  .chronology-title {
    font-size: 2.35rem;
  }
}

.timeline-container {
  position: relative;
  max-width: 880px;
  display: flex;
  flex-direction: column;
  gap: 48px;
  padding-left: 24px;
}

@media (min-width: 768px) {
  .timeline-container {
    padding-left: 180px;
    gap: 56px;
  }
}

.timeline-track {
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 0;
  width: 1px;
  background-color: var(--border-subtle);
}

@media (min-width: 768px) {
  .timeline-track {
    left: 140px;
  }
}

.timeline-entry {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@media (min-width: 768px) {
  .timeline-entry {
    flex-direction: row;
    align-items: baseline;
    gap: 48px;
  }
}

.timeline-year {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  line-height: 1;
  font-weight: 600;
  color: var(--petroleum);
}

@media (min-width: 768px) {
  .timeline-year {
    position: absolute;
    left: -180px;
    width: 110px;
    text-align: right;
    font-size: 2.7rem;
  }
}

.timeline-marker {
  position: absolute;
  top: 10px;
  left: -28px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--petroleum);
  border: 2px solid var(--bg-archive);
}

@media (min-width: 768px) {
  .timeline-marker {
    left: -44px;
  }
}

.timeline-content {
  background-color: transparent;
  padding: 0;
}

.timeline-content p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-main);
}

/* Diferenciação Visual dos Dois Marcos de 1986 */
.timeline-entry-founding .timeline-content p {
  font-weight: 500;
  color: #12110F;
}

.timeline-entry-sub {
  margin-top: -12px;
  padding-left: 16px;
  border-left: 2px solid rgba(54, 84, 90, 0.2);
}

@media (min-width: 768px) {
  .timeline-entry-sub {
    margin-top: -16px;
    padding-left: 0;
    border-left: none;
  }
}

.timeline-year-sub {
  font-size: 1.8rem;
  opacity: 0.75;
}

@media (min-width: 768px) {
  .timeline-year-sub {
    font-size: 2.1rem;
    opacity: 0.75;
  }
}

.timeline-marker-sub {
  width: 7px;
  height: 7px;
  background-color: var(--accent-document);
  top: 11px;
}

.timeline-entry-sub .timeline-content p {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--text-muted-contrast);
}

/* --- 4. Princípios: #principios --- */
.about-principles-section {
  background-color: var(--bg-dark-principles);
  color: var(--text-light);
  padding-top: 88px;
  padding-bottom: 88px;
  border-bottom: 1px solid var(--border-dark);
}

@media (min-width: 992px) {
  .about-principles-section {
    padding-top: 112px;
    padding-bottom: 112px;
  }
}

.principles-header {
  max-width: 780px;
  margin-bottom: 56px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.principles-title {
  font-family: var(--font-sans);
  font-size: 2rem;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-light);
  text-wrap: balance;
}

@media (min-width: 768px) {
  .principles-title {
    font-size: 2.75rem;
  }
}

.principles-intro {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-light-muted);
}

.principles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .principles-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

.principle-item {
  border-top: 1px solid var(--border-dark);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.principle-name {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-light);
}

.principle-desc {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-light-muted);
}

/* --- 5. Evolução: #evolucao --- */
.about-evolucao-section {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding-top: 88px;
  padding-bottom: 88px;
}

@media (min-width: 992px) {
  .about-evolucao-section {
    padding-top: 112px;
    padding-bottom: 112px;
  }
}

.about-evolucao-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 992px) {
  .about-evolucao-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 64px;
  }
}

.about-evolucao-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-evolucao-title {
  font-family: var(--font-sans);
  font-size: 1.85rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

@media (min-width: 768px) {
  .about-evolucao-title {
    font-size: 2.5rem;
  }
}

.about-evolucao-body {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-muted-contrast);
}

.about-evolucao-closing {
  font-size: 1.15rem;
  line-height: 1.7;
  font-weight: 600;
  color: var(--text-main);
  border-left: 2px solid var(--petroleum);
  padding-left: 16px;
  margin-top: 8px;
}

.about-evolucao-media {
  position: relative;
  display: flex;
  justify-content: center;
}

.about-evolucao-frame {
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-primary);
  padding: 6px;
  box-shadow: 0 12px 36px rgba(30, 29, 26, 0.04);
  max-width: 360px;
  width: 100%;
}

.about-evolucao-img {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* --- 6. Pessoas: #pessoas --- */
.about-pessoas-section {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
  padding-top: 80px;
  padding-bottom: 80px;
}

@media (min-width: 992px) {
  .about-pessoas-section {
    padding-top: 104px;
    padding-bottom: 104px;
  }
}

.about-pessoas-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 36px 28px;
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

@media (min-width: 768px) {
  .about-pessoas-card {
    padding: 56px 48px;
  }
}

.about-pessoas-title {
  font-family: var(--font-sans);
  font-size: 1.75rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

@media (min-width: 768px) {
  .about-pessoas-title {
    font-size: 2.25rem;
  }
}

.about-pessoas-body {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text-muted-contrast);
}

.about-pessoas-closing {
  font-size: 1.05rem;
  line-height: 1.65;
  font-weight: 600;
  color: var(--text-main);
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
}

/* --- 7. Contacto: #contacto --- */
.about-contacto-section {
  background-color: var(--bg-dark);
  color: var(--text-light);
  padding-top: 88px;
  padding-bottom: 88px;
}

@media (min-width: 992px) {
  .about-contacto-section {
    padding-top: 112px;
    padding-bottom: 112px;
  }
}

.about-contacto-card {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.about-contacto-header {
  border-bottom: 1px solid var(--border-dark);
  padding-bottom: 32px;
}

.about-contacto-title {
  font-family: var(--font-sans);
  font-size: 2rem;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-light);
  text-wrap: balance;
}

@media (min-width: 768px) {
  .about-contacto-title {
    font-size: 2.75rem;
  }
}

.about-contacto-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 992px) {
  .about-contacto-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
    align-items: start;
  }
}

.about-contacto-info-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 600px) {
  .about-contacto-info-block {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

.about-contacto-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.about-contacto-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light-muted);
}

.about-contacto-value {
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--text-light);
  font-style: normal;
}

.about-contacto-link {
  color: var(--text-light);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.about-contacto-link:hover {
  color: var(--accent);
}

.about-contacto-actions-block {
  background-color: var(--bg-dark-surface);
  border: 1px solid var(--border-dark);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-contacto-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.about-contacto-actions .btn-secondary {
  color: #F4F0EA;
  border-color: #6E5647;
  background-color: rgba(255, 255, 255, 0.06);
}

.about-contacto-actions .btn-secondary:hover,
.about-contacto-actions .btn-secondary:focus-visible {
  color: #FFFFFF;
  border-color: #F4F0EA;
  background-color: rgba(255, 255, 255, 0.14);
}

/* --- Mobile Sticky Action Bar & Resguardo Safe Area --- */
.mobile-sticky-bar {
  background: rgba(30, 29, 26, 0.98);
  border-top: 1px solid var(--border-dark);
  padding: 12px 16px max(12px, env(safe-area-inset-bottom, 0px));
}

.mobile-sticky-bar .btn-secondary {
  color: #F4F0EA;
  border-color: #5A524A;
  background-color: rgba(255, 255, 255, 0.08);
}

.mobile-sticky-bar .btn-secondary:hover,
.mobile-sticky-bar .btn-secondary:focus-visible {
  color: #FFFFFF;
  border-color: #F4F0EA;
  background-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.mobile-sticky-bar .btn-primary {
  background-color: var(--action);
  color: #FFFFFF;
  border-color: var(--action);
}

.mobile-sticky-bar .btn-primary:hover,
.mobile-sticky-bar .btn-primary:focus-visible {
  background-color: var(--action-hover);
  border-color: var(--action-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
}

/* Resguardo dinâmico no mobile: altura da barra fixa (~68px) + margem (24px) + safe-area */
@media (max-width: 767px) {
  .site-footer {
    padding-bottom: calc(68px + 24px + env(safe-area-inset-bottom, 0px));
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* --- Foco Acessível & Contraste --- */
:focus-visible {
  outline: 2px solid var(--petroleum);
  outline-offset: 3px;
}

.about-principles-section :focus-visible,
.about-contacto-section :focus-visible,
.site-footer :focus-visible,
.mobile-sticky-bar :focus-visible {
  outline: 2px solid #FFFDF9;
  outline-offset: 3px;
}

/* --- Redução de Movimento --- */
@media (prefers-reduced-motion: reduce) {
  .fade-in-up {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  html {
    scroll-behavior: auto !important;
  }
}