/* ==========================================================================
   Clínica Dentária Graça Ferraz — Sistema de Design & CSS Autónomo
   Direção Visual: Editorial Institucional Português
   ========================================================================== */

/* --- Tokens & Variáveis Globais --- */
:root {
  --font-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Paleta de Cores Editorial */
  --bg-primary: #F4F0EA;       /* Marfim quente */
  --bg-surface: #FFFDF9;       /* Branco quebrado */
  --bg-dark: #201C19;          /* Castanho escuro / Carvão profundo */
  --bg-dark-surface: #2B2622;  /* Superfície escura secundária */
  
  --text-main: #1E1D1A;        /* Carvão */
  --text-muted: #77716A;       /* Cinza quente / Muted */
  --text-light: #F4F0EA;       /* Texto sobre fundo escuro */
  --text-light-muted: #B8B0A5; /* Muted sobre fundo escuro */

  --border-subtle: #D8D0C6;    /* Linha areia fina */
  --border-dark: #3D3630;      /* Linha sobre fundo escuro */
  --accent: #A88C76;           /* Taupe quente */
  --action: #6E5647;           /* Castanho profundo / Botão principal */
  --action-hover: #564336;     /* Castanho profundo hover */

  /* Espaçamentos & Estrutura */
  --container-max: 1240px;
  --header-height: 80px;
  --radius-sm: 2px;
  --radius-md: 4px;
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: auto;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--text-main);
  color: var(--bg-surface);
  padding: 10px 18px;
  z-index: 9999;
  font-weight: 500;
  transition: top 0.2s ease;
}

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

/* --- Tipografia Editorial --- */
.font-serif {
  font-family: var(--font-serif);
}

.font-sans {
  font-family: var(--font-sans);
}

h1, h2, h3, h4, .serif-heading {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.15;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

/* --- Layout Utilitário --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

@media (min-width: 768px) {
  .container {
    padding-left: 36px;
    padding-right: 36px;
  }
}

@media (min-width: 1200px) {
  .container {
    padding-left: 48px;
    padding-right: 48px;
  }
}

.section-padding {
  padding-top: 88px;
  padding-bottom: 88px;
}

@media (min-width: 992px) {
  .section-padding {
    padding-top: 120px;
    padding-bottom: 120px;
  }
}

/* --- Header & Navegação --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(244, 240, 234, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: var(--transition-smooth);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border-subtle);
}

.brand-info {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.1;
  letter-spacing: 0.01em;
}

.brand-location {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-desktop {
  display: none;
}

@media (min-width: 992px) {
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: 32px;
  }
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--action);
  transition: width 0.25s ease;
}

.nav-link:hover::after {
  width: 100%;
}

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

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

.header-phone {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-phone:hover {
  color: var(--action);
}

/* Botões do Sistema */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--action);
  color: var(--bg-surface);
  border-color: var(--action);
}

.btn-primary:hover {
  background-color: var(--action-hover);
  border-color: var(--action-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  border-color: var(--text-main);
  background-color: rgba(0, 0, 0, 0.02);
  transform: translateY(-1px);
}

.btn-text {
  padding: 8px 0;
  background: transparent;
  color: var(--text-main);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--text-main);
  border-radius: 0;
}

.btn-text:hover {
  color: var(--action);
  border-color: var(--action);
  gap: 12px;
}

.btn-light {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--bg-surface);
}

.btn-light:hover {
  background-color: #EFECE6;
  border-color: #EFECE6;
  transform: translateY(-1px);
}

/* Mobile Toggle */
.mobile-menu-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
}

@media (min-width: 992px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-menu-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 24px;
  z-index: 99;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.mobile-menu-drawer.is-open {
  display: flex;
}

.mobile-menu-drawer .nav-link {
  font-size: 1.1rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(216, 208, 198, 0.4);
}

/* --- Sessão 01: Hero Institucional --- */
.hero-section {
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 80px;
  position: relative;
}

@media (min-width: 992px) {
  .hero-section {
    padding-top: calc(var(--header-height) + 70px);
    padding-bottom: 110px;
  }
}

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

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 60px;
  }
}

@media (min-width: 1200px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.hero-location-badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--action);
}

.hero-title {
  font-size: 2.75rem;
  line-height: 1.1;
  font-weight: 500;
  color: var(--text-main);
  text-wrap: balance;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.5rem;
  }
}

@media (min-width: 1200px) {
  .hero-title {
    font-size: 4.2rem;
  }
}

.hero-support {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding-top: 8px;
}

.hero-media-wrapper {
  position: relative;
}

.hero-image-frame {
  position: relative;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  padding: 8px;
  box-shadow: 0 20px 48px rgba(30, 29, 26, 0.08);
}

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

.hero-image-caption {
  margin-top: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

/* --- Faixa de Confiança --- */
.trust-banner {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  padding: 36px 0;
}

.trust-banner-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
}

.trust-banner-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-style: italic;
  color: var(--action);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.trust-banner-number {
  display: inline-block;
  margin: 0 0.08em;
  font-size: 1.35em;
  font-weight: 600;
  line-height: 0.8;
  color: var(--text-main);
}

@media (min-width: 768px) {
  .trust-banner-title {
    font-size: 2.1rem;
  }
}

/* --- Sessão 02: Manifesto e Prova Visual --- */
.manifesto-section {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
}

.manifesto-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 50px;
}

@media (min-width: 992px) {
  .manifesto-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 80px;
    align-items: start;
  }
}

.manifesto-block {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.section-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.manifesto-title {
  font-size: 2.4rem;
  line-height: 1.15;
  color: var(--text-main);
  text-wrap: balance;
}

@media (min-width: 768px) {
  .manifesto-title {
    font-size: 3rem;
  }
}

.manifesto-editorial-line {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--action);
  font-style: italic;
  padding-left: 16px;
  border-left: 2px solid var(--accent);
}

.manifesto-body {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 580px;
}

.proof-block {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 24px;
}

@media (min-width: 768px) {
  .proof-block {
    padding: 32px;
  }
}

.proof-media-frame {
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

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

.proof-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.proof-title {
  font-size: 1.7rem;
  font-weight: 500;
  color: var(--text-main);
}

.proof-body {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Sessão 03: Áreas de Ajuda --- */
.areas-section {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.areas-header {
  max-width: 700px;
  margin-bottom: 50px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.areas-title {
  font-size: 2.4rem;
  line-height: 1.15;
}

@media (min-width: 768px) {
  .areas-title {
    font-size: 3rem;
  }
}

.areas-support {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.areas-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-subtle);
}

.area-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-smooth);
}

@media (min-width: 768px) {
  .area-row {
    grid-template-columns: 80px 1.2fr 2fr 40px;
    align-items: baseline;
    gap: 24px;
    padding: 32px 16px;
  }

  .area-row:hover {
    background-color: var(--bg-primary);
    padding-left: 24px;
    padding-right: 8px;
  }
}

.area-number {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--accent);
  font-weight: 400;
}

.area-name {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--text-main);
  font-weight: 600;
}

.area-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.area-arrow {
  display: none;
  color: var(--accent);
  font-size: 1.2rem;
  transition: var(--transition-smooth);
}

@media (min-width: 768px) {
  .area-arrow {
    display: block;
    text-align: right;
  }

  .area-row:hover .area-arrow {
    color: var(--action);
    transform: translateX(4px);
  }
}

/* --- Sessão 04: Como Cuidamos & FAQ --- */
.process-section {
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-bottom: 1px solid var(--border-dark);
}

.process-header {
  max-width: 680px;
  margin-bottom: 60px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.process-section .section-eyebrow {
  color: var(--accent);
}

.process-title {
  font-size: 2.4rem;
  color: var(--text-light);
  line-height: 1.15;
}

@media (min-width: 768px) {
  .process-title {
    font-size: 3rem;
  }
}

.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  border-top: 1px solid var(--border-dark);
  padding-top: 40px;
}

@media (min-width: 992px) {
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
  }
}

.process-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}

.process-num {
  font-family: var(--font-serif);
  font-size: 3rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.9;
}

.process-card-title {
  font-size: 1.35rem;
  color: var(--text-light);
  font-weight: 500;
}

.process-card-desc {
  font-size: 0.98rem;
  color: var(--text-light-muted);
  line-height: 1.6;
}

/* FAQ */
.faq-section {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
}

.faq-header {
  max-width: 640px;
  margin-bottom: 48px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-title {
  font-size: 2.4rem;
  line-height: 1.15;
}

@media (min-width: 768px) {
  .faq-title {
    font-size: 3rem;
  }
}

.faq-container {
  max-width: 860px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-subtle);
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
}

.faq-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  cursor: pointer;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.25;
  transition: color 0.2s ease;
}

.faq-trigger:hover {
  color: var(--action);
}

.faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  color: var(--action);
  transition: transform 0.3s ease, background-color 0.2s ease;
}

.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
  background-color: var(--action);
  color: var(--bg-surface);
  border-color: var(--action);
}

.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  opacity: 0;
}

.faq-item.is-open .faq-panel {
  opacity: 1;
}

.faq-panel-content {
  padding-bottom: 24px;
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* --- Sessão 05: Contacto & Localização --- */
.contact-section {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 70px;
  }
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-heading-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-call-title {
  font-size: 2.4rem;
  line-height: 1.15;
  color: var(--text-main);
}

@media (min-width: 768px) {
  .contact-call-title {
    font-size: 3.2rem;
  }
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 28px;
}

.contact-detail-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.contact-value {
  font-size: 1.15rem;
  color: var(--text-main);
  font-weight: 500;
}

.contact-phone-highlight {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--action);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.contact-phone-highlight:hover {
  color: var(--action-hover);
}

.contact-actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  padding-top: 10px;
}

/* Formulário de Simulação Local */
.simulation-form-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-title {
  font-size: 1.5rem;
  color: var(--text-main);
  font-weight: 600;
}

.form-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-main);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 12px 14px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  transition: var(--transition-smooth);
}

.form-input:focus, .form-textarea:focus {
  outline: 2px solid var(--action);
  outline-offset: 2px;
  border-color: var(--action);
  background-color: #FFFFFF;
}

.form-input[aria-invalid="true"], .form-textarea[aria-invalid="true"] {
  border-color: var(--action-hover);
  background-color: #FBF1EC;
}

.form-textarea {
  resize: vertical;
  min-height: 90px;
}

.form-notice {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.form-feedback-message {
  display: none;
  padding: 14px;
  background-color: #EAE3D9;
  border: 1px solid var(--accent);
  color: var(--text-main);
  font-size: 0.88rem;
  line-height: 1.5;
  border-radius: var(--radius-sm);
}

/* --- Rodapé Institucional --- */
.site-footer {
  background-color: var(--bg-dark);
  color: var(--text-light-muted);
  padding: 60px 0 100px; /* Espaço extra para a barra mobile */
  border-top: 1px solid var(--border-dark);
  font-size: 0.9rem;
}

@media (min-width: 768px) {
  .site-footer {
    padding: 70px 0 40px;
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 50px;
  }
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-light);
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-light);
}

.footer-desc {
  font-size: 0.92rem;
  color: var(--text-light-muted);
  line-height: 1.6;
  max-width: 320px;
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: var(--text-light-muted);
}

.footer-link:hover {
  color: var(--text-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 0.82rem;
  color: #8C847B;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* --- Mobile Sticky Action Bar --- */
.mobile-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(32, 28, 25, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-dark);
  padding: 12px 20px max(12px, env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  z-index: 95;
}

@media (min-width: 768px) {
  .mobile-sticky-bar {
    display: none;
  }
}

@media (max-width: 767px) {
  .hero-section {
    padding-bottom: calc(112px + env(safe-area-inset-bottom));
  }
}

.mobile-sticky-bar .btn {
  flex: 1;
  padding: 10px 14px;
  font-size: 0.88rem;
}

/* A barra é escura; o botão secundário precisa permanecer claro e legível. */
.mobile-sticky-bar .btn-secondary {
  color: var(--text-light);
  border-color: #8F857A;
  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: var(--text-light);
  background-color: rgba(255, 255, 255, 0.16);
}

/* --- Animações e Microinterações --- */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }

  .fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .faq-panel {
    transition: none;
  }
}