/* ==========================================================================
   base.css — Reset, tipografia base, layout, navegação, utilitários
   ========================================================================== */

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

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--ja-bg);
  color: var(--ja-ink);
  font-family: var(--ja-font-sans);
  font-size: var(--ja-fs-base);
  line-height: var(--ja-lh-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ja-font-serif);
  font-weight: 500;
  line-height: var(--ja-lh-tight);
  color: var(--ja-ink);
  margin: 0 0 var(--ja-sp-3) 0;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--ja-fs-2xl); }
h2 { font-size: var(--ja-fs-xl); }
h3 { font-size: var(--ja-fs-lg); }
h4 { font-size: var(--ja-fs-md); }

p { margin: 0 0 var(--ja-sp-3) 0; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 var(--ja-sp-3) 0; padding-left: 1.25em; }

a {
  color: var(--ja-teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--ja-dur) var(--ja-ease);
}
a:hover { color: var(--ja-teal-deep); }

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

strong, b { font-weight: 600; }
small { font-size: var(--ja-fs-sm); }

code, kbd, samp, pre {
  font-family: var(--ja-font-mono);
  font-size: 0.92em;
}

hr {
  border: none;
  border-top: 1px solid var(--ja-border);
  margin: var(--ja-sp-6) 0;
}

/* --- Formulários -------------------------------------------------------- */
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button { touch-action: manipulation; }

input[type="text"],
input[type="password"],
input[type="number"],
input[type="email"],
input[type="date"],
input[type="tel"],
input[type="search"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #C8C1B4;
  border-radius: var(--ja-radius-sm);
  background: var(--ja-paper);
  color: var(--ja-ink);
  font-size: var(--ja-fs-md);
  line-height: 1.4;
  min-height: var(--ja-tap-min);
  transition: border-color var(--ja-dur) var(--ja-ease), box-shadow var(--ja-dur) var(--ja-ease);
}

textarea { min-height: 80px; resize: vertical; }

select {
  appearance: none;
  -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ja-ink-mute) 50%),
                    linear-gradient(135deg, var(--ja-ink-mute) 50%, transparent 50%);
  background-position: calc(100% - 17px) calc(50% + 2px), calc(100% - 12px) calc(50% + 2px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 34px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--ja-teal);
  box-shadow: var(--ja-focus-ring);
}

input[type="range"] {
  accent-color: var(--ja-teal);
  height: var(--ja-tap-min);
  cursor: pointer;
}

input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--ja-teal);
  width: 18px;
  height: 18px;
  cursor: pointer;
  flex: 0 0 auto;
}

/* --- Foco visível (acessibilidade) -------------------------------------- */
:focus-visible {
  outline: 2px solid var(--ja-teal);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ja-ink);
  color: var(--ja-paper);
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus { left: 0; }

/* --- Layout: container -------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--ja-container);
  margin-inline: auto;
  padding-inline: var(--ja-sp-4);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--ja-sp-6); }
}

/* --- Navegação principal ------------------------------------------------ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--ja-border);
  transition: box-shadow var(--ja-dur) var(--ja-ease), background-color var(--ja-dur) var(--ja-ease);
}

/* Estado "stuck" — a barra ganhou sombra quando está fixa no topo. */
.nav.is-stuck {
  box-shadow: var(--ja-shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ja-sp-4);
  min-height: var(--ja-nav-h);
  flex-wrap: wrap;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--ja-sp-2);
  font-family: var(--ja-font-serif);
  font-size: var(--ja-fs-md);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ja-ink);
  text-decoration: none;
  white-space: nowrap;
}
.nav__brand:hover { color: var(--ja-teal); }

.nav__brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--ja-ink);
  color: var(--ja-bg);
  font-family: var(--ja-font-serif);
  font-style: italic;
  font-size: 18px;
  line-height: 1;
  padding-bottom: 2px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--ja-sp-4);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav__links a {
  color: var(--ja-ink-soft);
  text-decoration: none;
  font-size: var(--ja-fs-sm);
  font-weight: 500;
  padding: var(--ja-sp-2) 0;
  border-bottom: 1px solid transparent;
  transition: color var(--ja-dur) var(--ja-ease), border-color var(--ja-dur) var(--ja-ease);
}
.nav__links a:hover { color: var(--ja-teal); border-bottom-color: var(--ja-teal); }

.nav__links a.is-active {
  color: var(--ja-teal);
  font-weight: 600;
  border-bottom-color: var(--ja-bronze);
}

/* Em ecrãs pequenos as links quebram para uma segunda linha — mantém hit area */
@media (max-width: 560px) {
  .nav__links { gap: var(--ja-sp-3); }
  .nav__links a { font-size: var(--ja-fs-xs); }
}

/* --- Utilitários -------------------------------------------------------- */
.hidden {
  display: none !important;
}

.no-print {
  /* visível no ecrã; removido no @media print em style.css */
}

@media print {
  .no-print { display: none !important; }
}

.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;
}

/* --- Botões base -------------------------------------------------------- */
button,
.btn,
.btn-ja,
.btn-primary,
.btn-secondary,
.btn-outline,
.btn-gold,
.btn-green,
.btn-purple,
.btn-ja-accent,
.btn-ja-secondary,
.btn-ja-send,
.btn-choice {
  font-family: inherit;
  border-radius: var(--ja-radius-sm);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: var(--ja-tap-min);
  padding: 11px 20px;
  font-size: var(--ja-fs-base);
  line-height: 1.2;
  border: 1px solid transparent;
  transition: background-color var(--ja-dur) var(--ja-ease),
              color var(--ja-dur) var(--ja-ease),
              border-color var(--ja-dur) var(--ja-ease),
              box-shadow var(--ja-dur) var(--ja-ease),
              opacity var(--ja-dur) var(--ja-ease);
}

button:disabled,
[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
}