/* Reset + base · FlashMoney */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizelegibility;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0 0 0.5em;
}

h1 {
  font-size: var(--step-4);
}

h2 {
  font-size: var(--step-3);
}

h3 {
  font-size: var(--step-2);
}

h4 {
  font-size: var(--step-1);
}

p {
  margin: 0 0 1rem;
  max-width: 60ch;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

/* Foco visível — WCAG 2.1 AA */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip link — WCAG */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--ink);
  color: var(--bg);
  padding: 0.75rem 1.25rem;
  text-decoration: none;
  border-radius: 0 0 8px;
}

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

/* Container utilitário */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: var(--step-0);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition:
    background 0.15s,
    color 0.15s,
    border-color 0.15s,
    transform 0.15s;
  min-height: 44px; /* touch target */
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--ink);
  color: var(--bg);
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(13, 99, 244, 0.08);
  color: var(--primary);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: var(--step--1);
  font-weight: 500;
}

/* Footer reusável */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 0;
  text-align: center;
  color: var(--ink-soft);
  font-size: var(--step--1);
}

.site-footer strong {
  color: var(--ink);
}

/* Mobile-first breakpoint */
@media (width >= 600px) {
  .row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}