/* Reset curto, shell da pagina, header e rodape. */

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

html {
  font-family: var(--font-sans);
  font-size: 100%;
  line-height: 1.55;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-primary);
  font-size: var(--text-md);
  background:
    radial-gradient(circle at 72% 12%, var(--background-tint-a), transparent 42%),
    radial-gradient(circle at 12% 62%, var(--background-tint-b), transparent 38%),
    var(--background);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; font-weight: 650; }
p { margin: 0; }
a { color: var(--purple); }

:focus-visible {
  outline: 2px solid var(--purple);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.shell {
  width: min(1320px, calc(100% - var(--space-16)));
  margin-inline: auto;
}

.skip {
  position: absolute;
  top: -5rem;
  left: var(--space-4);
  z-index: 40;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--surface-solid);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  box-shadow: var(--shadow-2);
  transition: top var(--duration-base) var(--ease-standard);
}
.skip:focus { top: var(--space-4); }

/* Cabeçalho: a mesma paleta roxa do portal ocupa toda a faixa superior. */
.header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: linear-gradient(105deg, var(--purple-strong), var(--purple-light));
  border-bottom: 1px solid color-mix(in srgb, var(--text-on-accent) 22%, transparent);
  transition: background var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}
.header[data-scrolled="true"] {
  background: linear-gradient(105deg, var(--purple-strong), var(--purple-light));
  border-bottom-color: color-mix(in srgb, var(--text-on-accent) 34%, transparent);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-on-accent);
  font-size: var(--text-base);
  font-weight: 650;
  letter-spacing: -.015em;
  text-decoration: none;
  transition: transform var(--duration-press) var(--ease-out);
}
.brand:active { transform: scale(.98); }
.brand-logo { display: block; width: auto; height: 2rem; }
.brand-divider { color: color-mix(in srgb, var(--text-on-accent) 48%, transparent); }
.brand-product { color: color-mix(in srgb, var(--text-on-accent) 78%, transparent); font-weight: 550; }

.nav { display: flex; align-items: center; gap: var(--space-1); }
.nav a {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: color-mix(in srgb, var(--text-on-accent) 84%, transparent);
  font-size: var(--text-sm);
  font-weight: 550;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out),
              transform var(--duration-press) var(--ease-out);
}
.nav a:hover { color: var(--text-on-accent); background: color-mix(in srgb, var(--text-on-accent) 16%, transparent); }
.nav a:active { transform: scale(.97); }

.header .button-secondary {
  border-color: color-mix(in srgb, var(--text-on-accent) 30%, transparent);
  background: var(--surface-solid);
  color: var(--purple-strong);
  box-shadow: none;
}
.header .button-secondary:hover {
  border-color: var(--surface-solid);
  background: color-mix(in srgb, var(--surface-solid) 88%, var(--purple-soft));
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-8) 0 var(--space-12);
  border-top: 1px solid var(--hairline);
  color: var(--text-tertiary);
  font-size: var(--text-xs);
}
.footer-mark { color: var(--text-secondary); font-weight: 600; }

main { display: flex; flex-direction: column; padding-bottom: var(--space-16); }

.noscript {
  margin-top: var(--space-6);
  padding: var(--space-4);
  border: 1px solid var(--amber-line);
  border-radius: var(--radius-md);
  background: var(--amber-soft);
  color: var(--amber);
  font-size: var(--text-sm);
}

@media (max-width: 1080px) {
  .shell { width: calc(100% - var(--space-8)); }
}

@media (max-width: 720px) {
  .shell { width: calc(100% - var(--space-6)); }
  .nav { display: none; }
  footer { display: block; }
  footer p + p { margin-top: var(--space-2); }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* O input de arquivo continua sendo o controle real; a dropzone e a sua pele. */
.file-input:focus-visible + .dropzone { outline: 2px solid var(--purple); outline-offset: 3px; }