/* ==========================================================================
   header.css — navbar flotante + menú mobile          prefijo: .hdr-
   ========================================================================== */

.hdr {
  position: fixed;
  inset: var(--hdr-top) 0 auto;
  z-index: 100;
  pointer-events: none;            /* solo la barra recibe clicks, no el aire alrededor */
}

.hdr-bar {
  pointer-events: auto;
  position: relative;
  /* tres columnas: el menú queda centrado de verdad, sin importar el ancho del logo o de los botones */
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.5rem;
  height: var(--hdr-h);
  padding: 0 .7rem 0 1.4rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: rgba(12, 10, 19, .55);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  transition: background var(--t-med) var(--ease),
              border-color var(--t-med) var(--ease),
              box-shadow var(--t-med) var(--ease);
}
.hdr.is-scrolled .hdr-bar {
  background: rgba(12, 10, 19, .86);
  border-color: var(--line-strong);
  box-shadow: 0 18px 50px -18px rgba(0, 0, 0, .9);
}

/* filete de brillo sobre el borde superior */
.hdr-bar::before {
  content: "";
  position: absolute;
  inset: -1px 18% auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(227, 106, 240, .7), transparent);
  opacity: .7;
}

.hdr-logo { justify-self: start; display: flex; align-items: center; }
.hdr-logo img { height: 2.125rem; width: auto; }

/* ---------- navegación ---------- */
.hdr-nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: .25rem;
  padding: .3125rem;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .025);
  border: 1px solid var(--line);
}

.hdr-link {
  position: relative;
  z-index: 1;
  padding: .55rem 1.05rem;
  border-radius: var(--r-pill);
  color: var(--text-2);
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: color var(--t-fast) var(--ease);
}
.hdr-link:hover,
.hdr-link.is-active { color: var(--text); }

/* píldora que se desliza hasta el link de la sección visible */
.hdr-indicator {
  position: absolute;
  top: .3125rem; bottom: .3125rem;
  left: 0; width: 0;
  border-radius: var(--r-pill);
  background: linear-gradient(135deg, rgba(123, 60, 242, .35), rgba(193, 44, 229, .35));
  border: 1px solid rgba(193, 44, 229, .45);
  box-shadow: 0 0 20px -4px rgba(193, 44, 229, .6);
  opacity: 0;
  transition: left var(--t-med) var(--ease-out),
              width var(--t-med) var(--ease-out),
              opacity var(--t-fast) var(--ease);
}
.hdr-indicator.is-visible { opacity: 1; }

.hdr-actions { justify-self: end; display: flex; align-items: center; gap: .6rem; }

/* ---------- botón hamburguesa ---------- */
.hdr-burger {
  display: none;
  width: 46px; height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--surface-2);
  place-items: center;
}
.hdr-burger span {
  grid-area: 1 / 1;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform var(--t-med) var(--ease-out), opacity var(--t-fast) var(--ease);
}
.hdr-burger span:nth-child(1) { transform: translateY(-6px); }
.hdr-burger span:nth-child(3) { transform: translateY(6px); }
.hdr-burger[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg); }
.hdr-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hdr-burger[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg); }

/* ---------- menú mobile ---------- */
.hdr-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  padding: calc(var(--hdr-h) + var(--hdr-top) + 2rem) var(--gutter) 2rem;
  background:
    radial-gradient(120% 60% at 100% 0%, rgba(193, 44, 229, .22), transparent 60%),
    radial-gradient(90% 50% at 0% 100%, rgba(79, 124, 255, .16), transparent 60%),
    rgba(5, 4, 9, .97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-med) var(--ease), visibility 0s linear var(--t-med);
}
.hdr-menu.is-open {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--t-med) var(--ease), visibility 0s;
}

.hdr-menu__links { display: grid; gap: .25rem; }
.hdr-menu__links a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.75rem, 1.2rem + 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-2);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--t-med) var(--ease-out), transform var(--t-med) var(--ease-out), color var(--t-fast);
}
.hdr-menu__links a small {
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--text-3);
}
.hdr-menu__links a.is-active { color: var(--text); }
.hdr-menu__links a.is-active small { color: var(--brand-hi); }
.hdr-menu.is-open .hdr-menu__links a { opacity: 1; transform: none; }
.hdr-menu.is-open .hdr-menu__links a:nth-child(1) { transition-delay: 60ms; }
.hdr-menu.is-open .hdr-menu__links a:nth-child(2) { transition-delay: 110ms; }
.hdr-menu.is-open .hdr-menu__links a:nth-child(3) { transition-delay: 160ms; }
.hdr-menu.is-open .hdr-menu__links a:nth-child(4) { transition-delay: 210ms; }

.hdr-menu__cta {
  margin-top: auto;
  display: grid;
  gap: .75rem;
}
.hdr-menu__cta .btn { width: 100%; }

/* ---------- responsive ---------- */
@media (max-width: 1060px) {
  .hdr-link { padding: .55rem .8rem; }
  .hdr-actions .btn--primary { display: none; }   /* queda solo Iniciar sesión */
}

@media (max-width: 880px) {
  :root { --hdr-h: 62px; --hdr-top: 10px; }
  .hdr-bar { display: flex; justify-content: space-between; padding: 0 .5rem 0 1rem; border-radius: 18px; }
  .hdr-logo img { height: 28px; }
  .hdr-nav,
  .hdr-actions .btn { display: none; }
  .hdr-burger { display: grid; }
}

@media (min-width: 881px) {
  .hdr-menu { display: none; }
}