:root {
  /* Tom principal escuro (fundo e textos) */
  --first-color: #1A1A1A;          /* Slightly darker gray for the background */

  /* Tom de destaque (botões, ícones, bordas) */
  --second-color: #00d2ff;         /* Bright cyan from the logo (unchanged) */

  /* Versão semitransparente para sombras e hover (≈5% opacity) */
  --second-color-shadow: rgba(0, 210, 255, 0.05); /* Faint cyan for shadows */
}