/* ============================================================
   DR. GABRIEL FOGAÇA — Design System
   Paleta, tipografia, espaçamento e responsivo (mobile-first)
   Fonte: docs/blueprint/design.md
   ============================================================ */

/* ---------- 1. Paleta de cores (tokens CSS) ---------- */
:root {
  /* Primária — verde-sóbrio institucional (também theme-color) */
  --color-primary: #0d5c46;
  --color-primary-dark: #0a4a38;
  --color-primary-deep: #083a2c;

  /* Secundária (accent) — dourado, apenas decorativo (contraste 2,4:1) */
  --color-accent: #c8a24a;

  /* Neutros */
  --color-bg: #f7f8f6;
  --color-surface: #ffffff;
  --color-text: #1a2e28;
  --color-text-muted: #4a5f58;
  --color-border: #dce4e0;

  /* Feedback */
  --color-error: #b3261e;
  --color-success: #2e7d32;

  /* ---------- 2. Tipografia ---------- */
  --font-heading: 'Lora', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* ---------- 3. Espaçamento (escala 8pt) ---------- */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-section: 96px;

  /* ---------- 4. Layout ---------- */
  --container-max: 1120px;
  --container-pad: 24px;
  --radius: 8px;
  --transition-fast: 150ms;
  --transition-med: 250ms;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem; /* 16px — base legível */
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* Imagens responsivas: max-width 100% + height auto mantêm a proporção;
   os atributos width/height no HTML reservam o espaço (evita CLS). */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- Container (max-width + auto, nunca largura fixa em px) ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ---------- Tipografia de headings (h1 > h2 > h3) ---------- */
h1,
h2,
h3 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
}

h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

/* ---------- Links e CTAs ---------- */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast) ease;
}

a:hover {
  color: var(--color-primary-dark);
}

.cta {
  display: inline-block;
  padding: 16px 32px;
  background-color: var(--color-primary);
  color: var(--color-surface);
  font-weight: 700;
  border-radius: var(--radius);
  transition:
    background-color var(--transition-fast) ease,
    transform var(--transition-fast) ease,
    box-shadow var(--transition-fast) ease;
}

.cta:hover {
  background-color: var(--color-primary-dark);
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(13, 92, 70, 0.2);
}

.cta-secondary {
  display: inline-block;
  padding: 8px 0;
  color: var(--color-primary);
  font-weight: 500;
  border-bottom: 2px solid var(--color-accent);
  transition: color var(--transition-fast) ease;
}

.cta-secondary:hover {
  color: var(--color-primary-dark);
}

/* ---------- Seções ---------- */
section {
  padding: var(--spacing-section) 0;
}

/* ---------- Header / nav ---------- */
header {
  background-color: var(--color-primary);
  color: var(--color-surface);
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  list-style: none;
}

nav a {
  color: var(--color-surface);
  padding: 8px;
}

/* ---------- FAQ ---------- */
details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

summary {
  cursor: pointer;
  font-weight: 700;
}

/* ---------- Banner de consentimento LGPD (AC-050) ----------
   Barra fixa no rodapé da viewport. O JS (events.js) esconde o banner
   com o atributo `hidden`; a regra #consent-banner[hidden] garante que
   o display:flex abaixo não sobrescreva o display:none do atributo. */
#consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--container-pad);
  background-color: var(--color-primary-deep);
  color: var(--color-surface);
  border-top: 1px solid var(--color-primary);
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.15);
}

#consent-banner[hidden] {
  display: none;
}

#consent-banner p {
  flex: 1 1 280px;
  font-size: 0.9rem;
  line-height: 1.5;
}

#consent-banner a {
  color: var(--color-accent);
  text-decoration: underline;
}

#consent-banner a:hover {
  color: var(--color-surface);
}

#consent-accept {
  flex: 0 0 auto;
  padding: 10px 24px;
  background-color: var(--color-surface);
  color: var(--color-primary-deep);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition:
    background-color var(--transition-fast) ease,
    color var(--transition-fast) ease;
}

#consent-accept:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-surface);
}

/* Mobile: texto e botão centralizados quando quebram em coluna.
   prefers-reduced-motion: a regra global abaixo já desativa transições
   (transition: none !important), então o banner não anima. */
@media (max-width: 640px) {
  #consent-banner {
    justify-content: center;
    text-align: center;
  }
}

/* ---------- Foco visível (acessibilidade) ---------- */
/* Regra geral: outline visível em TODO elemento interativo focado por
   teclado (links, botões, summary do FAQ, etc.) — WCAG 2.4.7. */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ---------- Responsivo mobile-first ---------- */
@media (max-width: 1024px) {
  :root {
    --container-pad: 32px;
  }
}

@media (max-width: 640px) {
  :root {
    --spacing-section: 64px;
    --container-pad: 16px;
  }

  body {
    font-size: 1rem;
  }

  nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* ---------- Scroll reveal (US-003 / AC-012) ----------
   Escopado em html.js: sem JS, o conteúdo permanece 100% visível
   (progressive enhancement). O JS (main.js) define --reveal-duration e
   --reveal-translate-y; o CSS apenas consome as variáveis. Anima somente
   transform/opacity — nunca propriedades de layout (evita CLS, AC-015). */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(var(--reveal-translate-y, 20px));
  transition:
    opacity var(--reveal-duration, 500ms) ease,
    transform var(--reveal-duration, 500ms) ease;
}

html.js [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Acessibilidade: prefers-reduced-motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  /* Sem movimento: conteúdo sempre visível, mesmo com JS ativo. */
  html.js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}