/* ── Background gradient mesh ── */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 15% 10%, rgba(82,174,50,0.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 85% 90%, rgba(50,89,253,0.10) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(82,174,50,0.03) 0%, transparent 50%);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.2px;
  white-space: nowrap;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
  will-change: transform;
}
.btn--sm { height: 40px; padding: 0 18px; font-size: 13.5px; }
.btn--lg { height: 54px; padding: 0 32px; font-size: 15.5px; letter-spacing: 0.4px; }

.btn--primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: var(--shadow-cta);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-cta-hover); }
.btn--primary:active { transform: scale(0.97); }

.btn--ghost {
  color: var(--text);
  background: transparent;
}
.btn--ghost:hover { background: var(--glass-hover); }

.btn--glass {
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn--glass:hover { background: var(--glass-hover); border-color: var(--glass-border-strong); transform: translateY(-2px); }
.btn--glass:active { transform: scale(0.97); }

/* ── Navbar · floating glass pill ─────────────────────────────────
   Detached from edges, premium backdrop-filter, dynamic on scroll.
   Estados:
     default       → glass sutil, transparente
     [data-scrolled] → más opaque, border más fuerte, shadow elevada
   ────────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: max(14px, env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  width: calc(100% - 28px);
  max-width: 1200px;
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.015) 100%),
    rgba(11, 15, 26, 0.55);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 4px 14px -4px rgba(0, 0, 0, 0.3),
    0 12px 30px -10px rgba(0, 0, 0, 0.35);
  transition:
    top 0.4s cubic-bezier(0.22, 0.61, 0.36, 1),
    background 0.4s ease,
    border-color 0.4s ease,
    box-shadow 0.4s ease,
    transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* Estado scrolled · más sólido, más elevado */
.nav[data-scrolled] {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%),
    rgba(11, 15, 26, 0.78);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.10),
    0 6px 20px -4px rgba(0, 0, 0, 0.4),
    0 18px 44px -12px rgba(50, 89, 253, 0.18);
}

/* Hidden state · scroll down (hide), scroll up (show) */
.nav[data-hidden] {
  transform: translateX(-50%) translateY(calc(-100% - 24px));
}

.nav__inner {
  padding: 10px 10px 10px 22px;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 28px;
}
.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}
.nav__logo-mark { width: 28px; height: 28px; }
.nav__logo-text {
  font-weight: 700;
  letter-spacing: 0.5px;
  font-size: 16px;
}
/* Imagen oficial del logo (assets/img/kbppay-logo.svg) — rombo + tipografía
   en un único SVG. Reemplaza al inline mark + span de texto. */
.nav__logo-img {
  height: 28px;
  width: auto;
  display: block;
}
.nav__links {
  display: flex;
  gap: 4px;
  justify-content: center;
  padding: 4px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 999px;
}
.nav__links a {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 7px 14px;
  border-radius: 999px;
  transition: color 0.3s ease, background 0.3s ease;
  position: relative;
  text-decoration: none;
}
.nav__links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}
/* Active section · highlight with gradient bg */
.nav__links a[aria-current="true"] {
  color: var(--text);
  background: linear-gradient(135deg, rgba(82, 174, 50, 0.18), rgba(50, 89, 253, 0.18));
  border: 1px solid rgba(82, 174, 50, 0.20);
  padding: 6px 13px; /* compensar border */
}

.nav__cta { display: flex; gap: 8px; }

.nav__burger {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  border-radius: var(--r-xs);
}
.nav__burger span {
  display: block;
  width: 18px; height: 1.6px;
  background: var(--text);
  border-radius: 1px;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.6px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.6px) rotate(-45deg); }

.nav__mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 10px 14px 14px;
  margin-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.nav__mobile[hidden] { display: none !important; }

@media (max-width: 880px) {
  .nav__mobile:not([hidden]) { display: flex; }
}
.nav__mobile a {
  padding: 12px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 12px;
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease;
}
.nav__mobile a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}
.nav__mobile a.btn { padding: 0 22px; margin-top: 8px; justify-content: center; }

@media (max-width: 880px) {
  .nav {
    width: calc(100% - 20px);
    border-radius: 24px;
  }
  .nav__inner { grid-template-columns: auto 1fr auto; gap: 12px; padding: 10px 10px 10px 16px; }
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .nav:has(.nav__mobile:not([hidden])) {
    border-radius: 24px;
  }
}

/* Body padding-top para compensar el nav fixed (era sticky antes) */
body { padding-top: 72px; }
@media (max-width: 880px) { body { padding-top: 64px; } }