/* =====================================================================
   WORKNOTE NEXT — system.css
   Camadas 1 e 3 do DESIGN_SYSTEM.md: primitivos + componentes genéricos.
   Regra de ouro deste arquivo: NUNCA uma cor, fonte ou valor de marca fixo aqui.
   Tudo é consumido via var(--token-semantico), definido pelo theme.css de cada proposta.
   Carregado ANTES do theme.css de cada proposta.
   ===================================================================== */

/* =====================================================================
   1. PRIMITIVOS (Camada 1 — DESIGN_SYSTEM.md secao 2)
   ===================================================================== */
:root {
  --space-1: .25rem;  --space-2: .5rem;   --space-3: .75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem;  --space-8: 2rem;   --space-10: 2.5rem;
  --space-12: 3rem;   --space-16: 4rem;   --space-20: 5rem;  --space-24: 6rem;
  --space-32: 8rem;   --space-40: 10rem;  --space-48: 12rem;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 1.75rem);
  --text-3xl: clamp(1.875rem, 1.6rem + 1.4vw, 2.25rem);
  --text-4xl: clamp(2.25rem, 1.8rem + 2.2vw, 3rem);
  --text-5xl: clamp(2.75rem, 2rem + 3.5vw, 4rem);
  --text-6xl: clamp(3.1rem, 2.1rem + 5vw, 5.5rem);
  --text-7xl: clamp(4.25rem, 2.8rem + 7vw, 7rem);

  --radius-none: 0;   --radius-xs: 4px;  --radius-sm: 8px;  --radius-md: 14px;
  --radius-lg: 20px;  --radius-xl: 28px; --radius-2xl: 40px; --radius-full: 999px;

  --shadow-0: none;
  --shadow-1: 0 1px 2px rgba(0,0,0,.05);
  --shadow-2: 0 4px 12px rgba(0,0,0,.06);
  --shadow-3: 0 12px 32px rgba(0,0,0,.10);
  --shadow-4: 0 24px 64px rgba(0,0,0,.16);

  --duration-instant: 100ms; --duration-fast: 180ms; --duration-base: 280ms;
  --duration-slow: 450ms;    --duration-slower: 700ms;
  --ease-standard: cubic-bezier(.4,0,.2,1);
  --ease-out: cubic-bezier(0,0,.2,1);
  --ease-in-out-soft: cubic-bezier(.45,0,.15,1);

  --container-max: 1200px;
  --container-padding: clamp(1.25rem, 4vw, 2.5rem);
  --header-h: 76px;

  --z-header: 100; --z-overlay: 200; --z-modal: 300;
}

/* =====================================================================
   2. RESET
   ===================================================================== */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}
body { min-height: 100svh; line-height: 1.6; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, picture, svg, video, canvas { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
h1, h2, h3, h4 { text-wrap: balance; }
p, li { text-wrap: pretty; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* =====================================================================
   3. BASE (consome tokens semânticos de tema — ver contrato no fim do arquivo)
   ===================================================================== */
body { font-family: var(--font-body); font-size: var(--text-base); color: var(--color-text); background: var(--color-bg); }
h1, h2, h3 { font-family: var(--font-display); font-weight: var(--fw-display, 700); line-height: 1.12; color: var(--color-heading); overflow-wrap: break-word; }
h4 { font-family: var(--font-display); font-weight: var(--fw-display-sm, 600); line-height: 1.3; color: var(--color-heading); }
h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-lg); }
.lead { font-size: var(--text-lg); color: var(--color-text-muted); line-height: 1.7; }

:focus-visible {
  outline: 2.5px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

.skip-link {
  position: absolute; top: -100%; left: var(--space-4); z-index: var(--z-modal);
  padding: var(--space-3) var(--space-5);
  background: var(--color-heading); color: var(--color-bg);
  font-weight: 600; border-radius: var(--radius-sm);
  transition: top var(--duration-base) var(--ease-standard);
}
.skip-link:focus { top: var(--space-4); }

/* =====================================================================
   4. LAYOUT
   ===================================================================== */
.container { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--container-padding); }
.section { padding-block: var(--space-section, clamp(4rem, 3rem + 4vw, 8rem)); }
.section--surface { background: var(--color-surface); }
.section--alt { background: var(--color-surface-alt); }
.section-head { max-width: 640px; margin-inline: auto; text-align: center; margin-bottom: var(--space-12); }
.section-head--left { margin-inline: 0; text-align: left; }

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 600; color: var(--color-accent);
  letter-spacing: .04em; text-transform: var(--eyebrow-case, none);
  margin-bottom: var(--space-3);
}
.eyebrow::before { content: ''; width: 7px; height: 7px; border-radius: var(--radius-full); background: var(--color-accent-2, var(--color-accent)); }

.grid { display: grid; gap: var(--space-6); }
.grid--2 { grid-template-columns: repeat(1, 1fr); }
.grid--3 { grid-template-columns: repeat(1, 1fr); }
.grid--4 { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 640px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

[data-reveal] {
  opacity: 0; transform: translateY(var(--reveal-distance, 16px));
  transition: opacity var(--duration-reveal, var(--duration-slow)) var(--ease-reveal, var(--ease-standard)),
              transform var(--duration-reveal, var(--duration-slow)) var(--ease-reveal, var(--ease-standard));
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

/* =====================================================================
   5. COMPONENTES (Camada 3 — anatomia/estados obrigatórios, aparência via tokens)
   ===================================================================== */

/* --- Botão --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--btn-pad-y, .9rem) var(--btn-pad-x, 1.6rem);
  font-family: var(--font-ui, var(--font-body)); font-weight: 600; font-size: var(--text-base);
  border-radius: var(--radius-btn, var(--radius-full));
  border: var(--btn-border-width, 0) solid transparent;
  transition: transform var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard);
  white-space: nowrap;
}
.btn svg { width: 1.15em; height: 1.15em; flex-shrink: 0; }
.btn--primary { background: var(--color-cta-bg); color: var(--color-cta-text); box-shadow: var(--shadow-btn, var(--shadow-1)); }
.btn--primary:hover { background: var(--color-cta-bg-hover); box-shadow: var(--shadow-btn-hover, var(--shadow-2)); transform: translateY(-2px); }
.btn--primary:active { transform: translateY(0); }
.btn--secondary { background: var(--color-surface); color: var(--color-heading); border: var(--btn-border-width, 1.5px) solid var(--color-border); }
.btn--secondary:hover { border-color: var(--color-accent); color: var(--color-accent); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: inherit; border: var(--btn-border-width, 1.5px) solid var(--color-border-strong); }
.btn--ghost:hover { background: var(--color-surface); }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none !important; box-shadow: none !important; }
.btn--lg { padding: var(--btn-lg-pad-y, 1.1rem) var(--btn-lg-pad-x, 2.1rem); font-size: var(--text-lg); }
.btn--block { width: 100%; }

/* --- Card --- */
.card {
  background: var(--color-surface); border: var(--card-border-width, 1px) solid var(--color-border);
  border-radius: var(--radius-card, var(--radius-lg));
  padding: var(--card-pad, var(--space-8));
  box-shadow: var(--shadow-card-rest, var(--shadow-0));
  transition: transform var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard);
}
.card--interactive:hover { transform: translateY(var(--card-hover-lift, -4px)); box-shadow: var(--shadow-card-hover, var(--shadow-3)); border-color: var(--color-border-strong); }

/* --- Badge --- */
.badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs); font-weight: 600; letter-spacing: .02em;
  border-radius: var(--radius-badge, var(--radius-full));
  background: var(--color-badge-bg, var(--color-surface-alt));
  color: var(--color-badge-text, var(--color-text-muted));
}

/* --- Alerta --- */
.alert { display: flex; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-radius: var(--radius-md); border: 1px solid; }
.alert svg { width: 20px; height: 20px; flex-shrink: 0; }
.alert--info    { background: var(--color-info-bg, #EFF6FF); border-color: var(--color-info, #3B82F6); color: var(--color-info, #1D4ED8); }
.alert--success { background: var(--color-success-bg, #F0FDF4); border-color: var(--color-success, #16A34A); color: var(--color-success, #15803D); }
.alert--warning { background: var(--color-warning-bg, #FFFBEB); border-color: var(--color-warning, #F59E0B); color: var(--color-warning, #B45309); }
.alert--error   { background: var(--color-error-bg, #FEF2F2);  border-color: var(--color-error, #EF4444);   color: var(--color-error, #B91C1C); }

/* --- Input (preparado, não usado nesta fase) --- */
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label { font-size: var(--text-sm); font-weight: 600; color: var(--color-heading); }
.field input, .field textarea {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
}
.field input:focus, .field textarea:focus { border-color: var(--color-accent); outline: 2.5px solid var(--color-focus-ring); outline-offset: 1px; }
.field[data-invalid] input { border-color: var(--color-error, #EF4444); }

/* --- Ícone circular reutilizável --- */
.icon-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: var(--icon-badge-size, 48px); height: var(--icon-badge-size, 48px);
  border-radius: var(--radius-icon-badge, var(--radius-md));
  background: var(--color-icon-badge-bg, var(--color-surface-alt));
  color: var(--color-accent); flex-shrink: 0;
}
.icon-badge svg { width: 48%; height: 48%; }
.icon-badge--lg { --icon-badge-size: 60px; }

/* --- Header / Nav --- */
.header {
  position: sticky; top: 0; z-index: var(--z-header); height: var(--header-h);
  display: flex; align-items: center;
  background: var(--color-header-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base) var(--ease-standard), background-color var(--duration-base) var(--ease-standard);
}
.header.is-scrolled { background: var(--color-header-bg-scrolled, var(--color-header-bg)); border-bottom-color: var(--color-border); }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); width: 100%; }
.logo { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-display); font-weight: 800; font-size: var(--text-xl); color: var(--color-heading); }
.logo__mark { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: var(--radius-sm); background: var(--color-logo-mark-bg, var(--color-accent)); color: var(--color-logo-mark-fg, #fff); flex-shrink: 0; }
.logo__mark svg { width: 20px; height: 20px; }

.nav { display: flex; align-items: center; gap: var(--space-6); }
.nav__list { display: flex; align-items: center; gap: var(--space-4); }
.nav__link { font-weight: 500; color: var(--color-text-muted); font-size: var(--text-sm); white-space: nowrap; transition: color var(--duration-fast) var(--ease-standard); position: relative; padding-block: var(--space-1); }
.nav__link:hover { color: var(--color-heading); }
.nav__link.is-active { color: var(--color-accent); font-weight: 600; }

.header__actions { display: flex; align-items: center; gap: var(--space-4); }
.header__phone { display: none; align-items: center; gap: var(--space-2); font-weight: 600; color: var(--color-heading); font-size: var(--text-sm); }
.header__phone svg { width: 18px; height: 18px; color: var(--color-accent); }

.menu-toggle { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: var(--radius-sm); color: var(--color-heading); }
.menu-toggle svg { width: 24px; height: 24px; }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-menu { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }

@media (min-width: 1280px) {
  .header__phone { display: inline-flex; }
  .menu-toggle { display: none; }
  .nav { position: static; background: none; box-shadow: none; padding: 0; flex-direction: row; }
  .nav__list { flex-direction: row; }
}
@media (max-width: 1279.98px) {
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--color-surface);
    padding: var(--space-8) var(--container-padding);
    transform: translateX(100%);
    transition: transform var(--duration-slow) var(--ease-standard);
    overflow-y: auto; overflow-x: hidden;
  }
  .nav.is-open { transform: translateX(0); }
  .nav__list { flex-direction: column; align-items: flex-start; gap: var(--space-6); }
  .nav__link { font-size: var(--text-xl); }
  .nav__cta { margin-top: var(--space-6); width: 100%; }
}

/* --- FAQ / Accordion --- */
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding-block: var(--space-5);
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg);
  color: var(--color-heading); cursor: pointer; list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .chevron { flex-shrink: 0; width: 22px; height: 22px; color: var(--color-accent); transition: transform var(--duration-base) var(--ease-standard); }
.faq-item[open] summary .chevron { transform: rotate(180deg); }
.faq-item p { padding-bottom: var(--space-6); color: var(--color-text-muted); max-width: 68ch; line-height: 1.7; }

/* --- Footer --- */
.footer { background: var(--color-footer-bg); color: var(--color-footer-text); padding-top: var(--space-16); }
.footer a { transition: color var(--duration-fast) var(--ease-standard); }
.footer a:hover { color: var(--color-footer-text-hover, #fff); }
.footer__grid { display: grid; gap: var(--space-10); padding-bottom: var(--space-12); }
@media (min-width: 768px) { .footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
.footer h4 { color: var(--color-footer-heading, var(--color-footer-text-hover, #fff)); font-size: var(--text-sm); text-transform: uppercase; letter-spacing: .06em; margin-bottom: var(--space-5); }
.footer__list { display: flex; flex-direction: column; gap: var(--space-3); font-size: var(--text-sm); }
.footer__bottom { border-top: 1px solid var(--color-footer-border, rgba(255,255,255,.12)); padding-block: var(--space-6); display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: space-between; font-size: var(--text-xs); color: var(--color-footer-text-muted, var(--color-footer-text)); }
.footer__bottom-links { display: flex; gap: var(--space-5); }

/* --- WhatsApp flutuante --- */
.whatsapp-float {
  position: fixed; right: var(--space-5); bottom: var(--space-5); z-index: var(--z-header);
  width: 58px; height: 58px; border-radius: var(--radius-full);
  background: var(--color-whatsapp, #16A34A); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-3);
  transition: transform var(--duration-fast) var(--ease-standard);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 28px; height: 28px; }

/* =====================================================================
   6. UTILITÁRIOS
   ===================================================================== */
.text-center { text-align: center; }
.max-w-prose { max-width: 65ch; }

/* =====================================================================
   CONTRATO DE TOKENS SEMÂNTICOS QUE CADA theme.css DEVE DEFINIR
   =====================================================================
   --font-display, --font-body, --font-ui (opcional, default = --font-body)
   --color-bg, --color-surface, --color-surface-alt
   --color-text, --color-text-muted, --color-heading
   --color-border, --color-border-strong
   --color-accent, --color-accent-2 (opcional)
   --color-cta-bg, --color-cta-bg-hover, --color-cta-text
   --color-focus-ring
   --color-header-bg, --color-header-bg-scrolled
   --color-logo-mark-bg, --color-logo-mark-fg
   --color-footer-bg, --color-footer-text
   --color-whatsapp (opcional)
   --space-section (opcional — override do primitivo para densidade da proposta)
   --radius-btn, --radius-card, --radius-badge, --radius-icon-badge (opcionais)
   --shadow-btn, --shadow-btn-hover, --shadow-card-rest, --shadow-card-hover (opcionais)
   ===================================================================== */