/* ============================================================
   COMPONENTS.CSS — Header, botões, cards, FAQ, footer, loader
   ============================================================ */

/* ---------------- Header ---------------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-header);
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background var(--dur-mid) var(--ease-in-out),
              backdrop-filter var(--dur-mid), border-color var(--dur-mid);
  border-bottom: 1px solid transparent;
}
.header.is-scrolled {
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border);
}
.header__inner { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--font-display);
  font-weight: 600; font-size: 1.25rem; letter-spacing: -0.01em; }
.brand__dot { width: 14px; height: 14px; border-radius: 50%; background: var(--grad-rind);
  box-shadow: 0 0 14px var(--green-neon); }
.nav { display: flex; align-items: center; gap: 1.75rem; }
.nav a { font-size: .95rem; position: relative; color: var(--text-muted); transition: color var(--dur-fast); }
.nav a::after { content: ""; position: absolute; left: 0; bottom: -4px; width: 0; height: 2px;
  background: var(--accent); transition: width var(--dur-fast) var(--ease-out-expo); }
.nav a:hover { color: var(--text); }
.nav a:hover::after { width: 100%; }

.header__actions { display: flex; align-items: center; gap: .75rem; }


/* Burger (mobile) */
.burger { display: none; width: 44px; height: 44px; border-radius: var(--radius-sm);
  background: var(--card-bg); border: 1px solid var(--card-border); }
.burger span { display: block; width: 20px; height: 2px; background: var(--text); margin: 4px auto; border-radius: 2px;
  transition: transform var(--dur-fast), opacity var(--dur-fast); }

/* ---------------- Buttons ---------------- */
.btn {
  --pad-x: 1.6rem;
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .9rem var(--pad-x); border-radius: var(--radius-pill);
  font-weight: 600; font-size: 1rem; letter-spacing: .01em;
  position: relative; overflow: hidden; isolation: isolate;
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-fast);
}
.btn:active { transform: scale(.96); }
.btn--primary { background: var(--grad-rind); color: var(--white); box-shadow: var(--shadow-glow); }
.btn--primary::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--grad-pulp); opacity: 0; transition: opacity var(--dur-mid) var(--ease-in-out);
}
.btn--primary:hover { transform: translateY(-2px); }
.btn--primary:hover::before { opacity: 1; }
.btn--ghost { border: 1px solid var(--card-border); color: var(--text); background: var(--card-bg); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn--lg { padding: 1.1rem 2.2rem; font-size: 1.1rem; }

/* ---------------- Cards ---------------- */
.card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius-md); padding: var(--space-md);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
  transition: transform var(--dur-mid) var(--ease-out-expo),
              border-color var(--dur-fast), box-shadow var(--dur-fast);
  position: relative; overflow: hidden;
}
.card::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
  background: var(--grad-glow); opacity: 0; transition: opacity var(--dur-mid);
}
.card:hover { transform: translateY(-6px); border-color: var(--accent); }
.card:hover::after { opacity: .35; }
.card__icon {
  width: 56px; height: 56px; border-radius: var(--radius-sm); display: grid; place-items: center;
  background: var(--grad-rind); color: var(--white); margin-bottom: var(--space-sm);
  font-size: 1.6rem; box-shadow: var(--shadow-glow);
}
.card h3 { font-size: var(--fs-h3); margin-bottom: .5rem; }
.card p { color: var(--text-muted); font-size: 1rem; }
.card__metric { font-family: var(--font-display); font-size: clamp(2rem,4vw,3rem); color: var(--accent); }

/* ---------------- FAQ accordion ---------------- */
.faq { position: relative; overflow: hidden; }
.faq__bg-sprites {
  position: absolute; inset: 0;
  pointer-events: none; z-index: 0;
  overflow: hidden;
}
.faq__bg-sprite {
  position: absolute; height: auto;
  will-change: transform, opacity;
}
.faq__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  position: relative; z-index: 1;
}
.faq__anim {
  display: flex;
  align-items: center;
  justify-content: center;
}
.faq__sprite {
  width: 100%;
  max-width: 300px;
  height: auto;
  display: block;
}
.faq__content { /* right column */ }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item__q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.6rem 0; text-align: left; font-size: var(--fs-h3); font-family: var(--font-display);
}
.faq-item__icon { flex: 0 0 auto; width: 32px; height: 32px; position: relative; }
.faq-item__icon::before, .faq-item__icon::after {
  content: ""; position: absolute; inset: 50% 0 auto 0; height: 2px; background: var(--accent);
  transition: transform var(--dur-mid) var(--ease-spring);
}
.faq-item__icon::after { transform: rotate(90deg); }
.faq-item.is-open .faq-item__icon::after { transform: rotate(0); }
.faq-item__a { overflow: hidden; height: 0; }
.faq-item__a p { padding-bottom: 1.6rem; color: var(--text-muted); max-width: 60ch; }

/* ---------------- Footer ---------------- */
.footer { background: var(--bg-elev); border-top: 1px solid var(--border); padding-block: var(--space-lg); }
.footer__grid { display: flex; flex-wrap: wrap; gap: var(--space-lg); justify-content: space-between; }
.footer__brand { max-width: 320px; }
.footer__cols { display: flex; gap: var(--space-lg); flex-wrap: wrap; }
.footer__col h5 { font-size: var(--fs-small); text-transform: uppercase; letter-spacing: .2em;
  color: var(--accent); margin-bottom: 1rem; }
.footer__col a { display: block; color: var(--text-muted); padding: .35rem 0; transition: color var(--dur-fast); }
.footer__col a:hover { color: var(--text); }
.footer__bottom { margin-top: var(--space-lg); padding-top: var(--space-md);
  border-top: 1px solid var(--border); display: flex; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem; color: var(--text-muted); font-size: var(--fs-small); }

/* ---------------- Custom cursor ---------------- */
.cursor { position: fixed; top: 0; left: 0; z-index: var(--z-cursor); pointer-events: none;
  mix-blend-mode: difference; }
.cursor__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--white);
  transform: translate(-50%, -50%); }
.cursor__ring { position: fixed; top: 0; left: 0; width: 44px; height: 44px; border-radius: 50%;
  border: 1.5px solid var(--white); transform: translate(-50%, -50%);
  transition: width var(--dur-fast), height var(--dur-fast), background var(--dur-fast);
  z-index: var(--z-cursor); pointer-events: none; mix-blend-mode: difference; }
.cursor__ring.is-hover { width: 72px; height: 72px; background: rgba(255,255,255,.15); }
@media (hover: none), (pointer: coarse) { .cursor, .cursor__ring { display: none; } }

/* ---------------- Loader ---------------- */
.loader {
  position: fixed; inset: 0; z-index: var(--z-loader);
  background: var(--grad-hero); display: grid; place-items: center; gap: 1.5rem;
}
.loader__melon { width: 88px; height: 88px; }
.loader__bar { width: min(60vw, 320px); height: 3px; background: rgba(255,255,255,.15); border-radius: 2px; overflow: hidden; }
.loader__fill { height: 100%; width: 0; background: var(--grad-pulp); }
.loader__pct { font-family: var(--font-display); color: var(--white); font-size: 1rem; letter-spacing: .2em; }

/* ---------------- Particles canvas ---------------- */
.particles-canvas { position: fixed; inset: 0; z-index: 6; pointer-events: none; }

/* ---------------- Skip link (a11y) ---------------- */
.skip-link { position: absolute; left: -999px; top: 0; z-index: 9999; padding: .75rem 1rem;
  background: var(--accent); color: var(--on-accent); border-radius: 0 0 var(--radius-sm) 0; }
.skip-link:focus { left: 0; }