/* ==========================================================================
   Portal Saúde — Landing Page Styles
   Ver docs/DESIGN_GUIDELINES.md para o racional das decisões de design.

   Metodologia: mobile-first. As regras "soltas" (sem media query) são a
   base para telas pequenas; breakpoints usam min-width para acrescentar
   layout conforme a tela cresce — nunca o contrário.
   Breakpoints: --bp-sm (481px, ajustes leves), --bp-md (641px, grids
   passam a 2 colunas), --bp-lg (961px, layout de desktop completo).
   ========================================================================== */

:root {
  /* Cores de marca */
  --color-primary: #0F6FDE;
  --color-primary-dark: #0A4FA0;
  --color-primary-light: #E8F1FD;
  --color-accent: #12B886;
  --color-accent-dark: #0C8F68;

  /* Neutros */
  --color-ink: #0B1F3A;
  --color-text: #33415C;
  --color-text-muted: #5C6B85;
  --color-border: #E2E8F0;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F6F9FC;

  /* Estados */
  --color-warning-bg: #FFF6E5;
  --color-warning-text: #8A5A00;

  /* Tipografia */
  --font-base: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;

  /* Espaçamento (escala 4px) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1160px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(11, 31, 58, 0.06);
  --shadow-md: 0 8px 24px rgba(11, 31, 58, 0.08);
  --shadow-lg: 0 20px 48px rgba(11, 31, 58, 0.12);
}

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

html { scroll-behavior: smooth; }

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

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

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}
@media (min-width: 641px) {
  .container { padding: 0 var(--space-6); }
}

h1, h2, h3, h4 { color: var(--color-ink); font-weight: 700; line-height: 1.2; }

h1, h2 { text-wrap: balance; }
h1 { font-size: clamp(2rem, 4vw + 1rem, 3.4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 2.4vw + 1rem, 2.4rem); letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; }
@media (min-width: 641px) {
  h3 { font-size: 1.25rem; }
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  margin-bottom: var(--space-4);
}

.lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}
@media (min-width: 641px) {
  .lead { font-size: 1.15rem; }
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: scale(0.97); }
.btn:focus-visible { outline: 3px solid var(--color-primary-light); outline-offset: 2px; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-md); }

.btn-ghost {
  background: transparent;
  color: var(--color-primary-dark);
  border-color: var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-primary); background: var(--color-primary-light); }

.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}
@media (min-width: 641px) {
  .site-header .container { padding-top: var(--space-4); padding-bottom: var(--space-4); }
}

.brand { display: block; }

/* Nav: por padrão (mobile) é um menu suspenso escondido, acionado pelo
   botão hambúrguer. A partir de --bp-md vira uma barra horizontal fixa. */
.nav-links {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  flex-direction: column;
  align-items: stretch;
  padding: var(--space-6);
  gap: var(--space-4);
  display: none;
}
.nav-links.open { display: flex; }

.nav-links a:not(.btn) {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-links a:not(.btn):hover { color: var(--color-primary); }

.nav-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (min-width: 681px) {
  .nav-links {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-8);
    background: none;
    border-bottom: none;
    padding: 0;
  }
  .nav-toggle { display: none; }
}

/* Hero */
.hero {
  padding: var(--space-16) 0 var(--space-12);
  background:
    radial-gradient(60% 60% at 85% 10%, var(--color-primary-light) 0%, transparent 70%),
    linear-gradient(180deg, #FBFDFF 0%, #FFFFFF 100%);
}
@media (min-width: 961px) {
  .hero { padding: var(--space-24) 0 var(--space-16); }
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}
@media (min-width: 961px) {
  .hero .container { grid-template-columns: 1.1fr 0.9fr; gap: var(--space-16); }
}

.hero-copy p.lead { margin: var(--space-4) 0 var(--space-8); max-width: 46ch; }

.hero-actions { display: flex; flex-direction: column; gap: var(--space-3); }
.hero-actions .btn { width: 100%; }
@media (min-width: 641px) {
  .hero-actions { flex-direction: row; flex-wrap: wrap; gap: var(--space-4); }
  .hero-actions .btn { width: auto; }
}

.hero-note {
  margin-top: var(--space-4);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.hero-visual {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
}
@media (min-width: 641px) {
  .hero-visual { padding: var(--space-8); }
}

.hero-visual-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.hero-visual-label .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(18, 184, 134, 0.18);
  flex-shrink: 0;
}

.hero-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
@media (min-width: 641px) {
  .hero-stat-grid { gap: var(--space-4); }
}

.hero-stat {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}
@media (min-width: 641px) {
  .hero-stat { padding: var(--space-4); }
}
.hero-stat strong {
  display: block;
  font-size: 1.4rem;
  color: var(--color-primary-dark);
}
@media (min-width: 641px) {
  .hero-stat strong { font-size: 1.6rem; }
}
.hero-stat span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Placeholder notice banner */
.placeholder-banner {
  background: var(--color-warning-bg);
  color: var(--color-warning-text);
  font-size: 0.85rem;
  text-align: center;
  padding: var(--space-2) var(--space-4);
}
.placeholder-banner strong { font-weight: 700; }

/* Sections */
section { padding: var(--space-16) 0; }
@media (min-width: 961px) {
  section { padding: var(--space-24) 0; }
}
section.alt { background: var(--color-surface-alt); }

.section-head {
  max-width: 640px;
  margin: 0 auto var(--space-8);
  text-align: center;
}
@media (min-width: 641px) {
  .section-head { margin-bottom: var(--space-12); }
}
.section-head .lead { margin-top: var(--space-3); }

/* Problema */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 641px) {
  .problem-grid { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
}
@media (min-width: 961px) {
  .problem-grid { grid-template-columns: repeat(3, 1fr); }
}
.problem-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}
@media (min-width: 641px) {
  .problem-card { padding: var(--space-8); }
}
.problem-card .icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}
.problem-card h3 { margin-bottom: var(--space-2); }
.problem-card p { color: var(--color-text-muted); font-size: 0.95rem; }

/* Personas / Para quem é */
.personas-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 641px) {
  .personas-grid { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
}
@media (min-width: 961px) {
  .personas-grid { grid-template-columns: repeat(3, 1fr); }
}
.persona-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: box-shadow .2s ease, transform .2s ease;
}
@media (min-width: 641px) {
  .persona-card { padding: var(--space-8); }
}
.persona-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.persona-card .tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  background: rgba(18, 184, 134, 0.12);
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
}
.persona-card ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.persona-card li {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  padding-left: var(--space-6);
  position: relative;
}
.persona-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent-dark);
  font-weight: 700;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 641px) {
  .features-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 961px) {
  .features-grid { grid-template-columns: repeat(4, 1fr); }
}
.feature-card {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}
@media (min-width: 641px) {
  .feature-card { padding: var(--space-6); border-bottom: none; }
}
.feature-card .icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-bottom: var(--space-4);
}
.feature-card h3 { font-size: 1.05rem; margin-bottom: var(--space-2); }
.feature-card p { font-size: 0.92rem; color: var(--color-text-muted); }

/* Como funciona */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  counter-reset: step;
}
@media (min-width: 641px) {
  .steps { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 961px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
}
.step {
  position: relative;
  padding-top: calc(40px + var(--space-3));
}
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 0; left: 0;
  z-index: 2;
  width: 40px; height: 40px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
/* Linha conectando os passos, dando sensação de processo/sequência
   (só faz sentido no layout de 1 coluna do mobile — em grade de 2+
   colunas os itens já ficam lado a lado, então a linha é removida). */
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 40px;
  left: 19px;
  width: 2px;
  height: calc(100% - 40px + var(--space-6));
  background: var(--color-border);
}
@media (min-width: 641px) {
  .step::after { content: none; }
}
.step h3 { font-size: 1.05rem; margin-bottom: var(--space-2); }
.step p { font-size: 0.92rem; color: var(--color-text-muted); }

/* Segurança / Compliance */
.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 641px) {
  .trust-grid { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
}
@media (min-width: 961px) {
  .trust-grid { grid-template-columns: repeat(3, 1fr); }
}
.trust-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  background: var(--color-surface);
  text-align: center;
}
.trust-card img.avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  margin: 0 auto var(--space-4);
  object-fit: cover;
}
.trust-card h3 { font-size: 1rem; margin-bottom: var(--space-2); }
.trust-card p { font-size: 0.9rem; color: var(--color-text-muted); text-align: left; }

/* CTA final */
.cta-final {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  color: #fff;
}
@media (min-width: 681px) {
  .cta-final { padding: var(--space-16); }
}
.cta-final h2 { color: #fff; }
.cta-final .lead { color: rgba(255,255,255,0.85); margin: var(--space-3) auto var(--space-8); max-width: 50ch; }
.cta-final .btn-primary { background: #fff; color: var(--color-primary-dark); }
.cta-final .btn-primary:hover { background: #f0f5ff; }
.cta-final .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.4); }
.cta-final .btn-ghost:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.cta-final .actions { display: flex; flex-direction: column; gap: var(--space-3); }
.cta-final .actions .btn { width: 100%; }
@media (min-width: 641px) {
  .cta-final .actions { flex-direction: row; justify-content: center; flex-wrap: wrap; gap: var(--space-4); }
  .cta-final .actions .btn { width: auto; }
}

/* Contato */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: flex-start;
}
@media (min-width: 961px) {
  .contact-grid { grid-template-columns: 0.9fr 1.1fr; gap: var(--space-16); }
}
.contact-info h2 { margin-bottom: var(--space-4); }
.contact-info .lead { margin-bottom: var(--space-6); }
.contact-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-4); }
.contact-list li { display: flex; gap: var(--space-3); align-items: flex-start; }
.contact-list .icon {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  background: var(--color-primary-light); color: var(--color-primary-dark);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

/* Ícones inline (SVG stroke, herdam a cor do container via currentColor) */
.icon svg { display: block; }

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}
@media (min-width: 641px) {
  .contact-form { padding: var(--space-8); }
}
.form-row { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
@media (min-width: 481px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}
.form-field { margin-bottom: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); }
.form-field label { font-size: 0.85rem; font-weight: 600; color: var(--color-ink); }
.form-field input,
.form-field select,
.form-field textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  color: var(--color-text);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
}
.form-note { font-size: 0.8rem; color: var(--color-text-muted); margin-top: var(--space-3); }
.form-success {
  display: none;
  background: rgba(18, 184, 134, 0.12);
  color: var(--color-accent-dark);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  font-size: 0.9rem;
  margin-top: var(--space-4);
}
.form-success.visible { display: block; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-6);
  background: var(--color-surface-alt);
}
@media (min-width: 641px) {
  .site-footer { padding: var(--space-16) 0 var(--space-8); }
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}
@media (min-width: 641px) {
  .footer-grid { grid-template-columns: 1fr 1fr; margin-bottom: var(--space-12); }
}
@media (min-width: 961px) {
  .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); }
}
.footer-brand p { color: var(--color-text-muted); font-size: 0.9rem; margin-top: var(--space-3); max-width: 32ch; }
.footer-col h4 { font-size: 0.85rem; margin-bottom: var(--space-4); }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { font-size: 0.9rem; color: var(--color-text-muted); }
.footer-col a:hover { color: var(--color-primary); }
.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
@media (min-width: 641px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
  }
}

/* Utilities */
.text-center { text-align: center; }
.mt-8 { margin-top: var(--space-8); }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  z-index: 100;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* Páginas legais (política de privacidade, termos de uso) */
.legal-page { padding: var(--space-12) 0 var(--space-16); }
.legal-page .container { max-width: 760px; }
.legal-page .updated-at {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: var(--space-2) 0 var(--space-8);
}
.legal-page h2 { font-size: 1.3rem; margin: var(--space-8) 0 var(--space-3); }
.legal-page h2:first-of-type { margin-top: 0; }
.legal-page p { margin-bottom: var(--space-3); }
.legal-page ul, .legal-page ol { padding-left: var(--space-6); margin-bottom: var(--space-3); }
.legal-page li { margin-bottom: var(--space-2); }
.legal-page strong { color: var(--color-ink); }
.legal-page a { color: var(--color-primary); text-decoration: underline; }