/* theme.css — custom properties + tipografia (tema WhatsApp) */
:root {
  /* Paleta WhatsApp */
  --wa-teal: #075E54;
  --wa-teal-dark: #054D44;
  --wa-teal-light: #128C7E;
  --wa-teal-lighter: #25D366;
  /* Verde de ação do WhatsApp atual — superfícies (botão enviar, míc.);
     NÃO usar em texto: #00A884 reprova contraste AA sobre branco */
  --wa-green: #00A884;
  --wa-chat-bg: #EFEAE2;
  --wa-bubble-out: #D9FDD3;
  --wa-bubble-in: #FFFFFF;

  /* Token pedido pela especificação (uso decorativo: bordas, acentos) */
  --wa-timestamp: #8FA895;
  /* Tinta de texto usada em horários/metadados — mais escura para contraste AA */
  --wa-timestamp-ink: #54656F;

  /* Neutros */
  --ink: #111B21;
  --ink-2: #3B4A54;
  --ink-3: #54656F;
  --ink-muted: #667781;
  --panel: #FFFFFF;
  --panel-alt: #F0F2F5;
  --line: #D9DBD4;
  --danger: #D32F2F;
  --mark-bg: #F3E28A;
  --tick-read: #53BDEB; /* duplo check azul = "lida" no WhatsApp */

  /* Estruturais */
  --radius: 8px;
  --radius-sm: 6px;
  --shadow-bubble: 0 1px 0.5px rgba(11, 20, 26, 0.13);
  --shadow-pop: 0 6px 18px rgba(11, 20, 26, 0.18);
  --topbar-h: 56px;
  --sidebar-w: 360px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji";
}

html { font-size: 19.2px; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--panel-alt);
}

h1, h2, h3 { font-weight: 600; }

a { text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--wa-teal-light);
  outline-offset: 2px;
  border-radius: 2px;
}

.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: 8px;
  top: -48px;
  z-index: 100;
  background: var(--wa-teal);
  color: #fff;
  padding: 8px 14px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top 120ms ease;
}

.skip-link:focus { top: 0; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}