*, *::before, *::after {
  box-sizing: border-box;
}

/* Qualquer `display` explícito vence o `[hidden]` do navegador — foi assim que
   um botão marcado como oculto continuou na tela (ciclo 87) e um campo de
   formulário antes dele (ciclo 76). Aqui a regra passa a valer sempre. */
[hidden] {
  display: none !important;
}

html {
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* O gradiente radial de fundo sujava o contraste dos cards; o fundo agora é chapado. */
body {
  margin: 0;
  min-height: 100vh;
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  font-size: var(--text-base);
  line-height: var(--leading-normal);
}

h1, h2, h3, h4, p {
  margin: 0;
}

/* Escala tipográfica: os títulos param de depender de tamanho inline. */
h1 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h2 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
}

h3 {
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
}

h4 {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
}

button, input, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

a {
  color: hsl(var(--primary));
  text-decoration: none;
  cursor: pointer;
}

a:hover {
  text-decoration: underline;
}

::selection {
  background: hsl(var(--primary) / 0.35);
}

/*
 * Foco visível único para todo o sistema. `:focus-visible` só aparece na
 * navegação por teclado, então o mouse continua limpo.
 */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: var(--ring-width) solid hsl(var(--ring));
  outline-offset: var(--ring-offset);
  border-radius: var(--radius-xs);
}

:where(button, a, input, select, textarea)[disabled],
:where(button, a)[aria-disabled="true"] {
  opacity: var(--disabled-opacity);
  cursor: not-allowed;
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* ---------- Scrollbar fina ---------- */
* {
  scrollbar-width: thin;
  scrollbar-color: hsl(var(--muted-foreground) / 0.25) transparent;
}

*::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  background-color: hsl(var(--muted-foreground) / 0.25);
  border-radius: 9999px;
  border: 1px solid transparent;
}

*::-webkit-scrollbar-corner {
  background: transparent;
}

/* ---------- Animações de entrada ---------- */
@keyframes fade-in {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes scale-in {
  0% { opacity: 0; transform: scale(0.95); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: var(--shadow-glow); }
  50% { box-shadow: 0 0 40px hsl(var(--primary) / 0.55); }
}

.fade-in {
  animation: fade-in 0.25s ease-out;
}

.scale-in {
  animation: scale-in 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}