/* =========================================
   HEADER
   ========================================= */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  transition: all 0.4s var(--ease);
  /* Degradado horizontal: teal claro a la izquierda → teal medio a la derecha
     Esto hace que la zona del logo sea más luminosa y el logo destaque mejor */
  background: linear-gradient(90deg, rgba(42, 155, 170, 0.95) 0%, rgba(30, 118, 130, 0.95) 50%, rgba(15, 73, 81, 0.95) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(68, 220, 241, 0.18);
}

.site-header.scrolled {
  height: 70px;
  background: linear-gradient(90deg, rgba(42, 155, 170, 0.98) 0%, rgba(30, 118, 130, 0.98) 50%, rgba(15, 73, 81, 0.98) 100%);
  box-shadow: 0 4px 30px rgba(15, 73, 81, 0.2);
}

.header-inner {
  max-width: var(--max-w);
  height: 100%;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--blanco);
}
.logo-mark {
  width: 60px; height: 60px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: transform 0.5s var(--ease);
}
.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  /* Sombra suave para dar relieve al logo sobre la cabecera */
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.15));
}
.logo:hover .logo-mark {
  transform: scale(1.05);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo-text .nombre {
  font-family: var(--fuente-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.logo-text .lema {
  font-size: 0.7rem;
  color: var(--cian);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-top: 4px;
}

/* Navegación */
.nav {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}
.nav a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 400;
  letter-spacing: 0.5px;
  position: relative;
  padding: 0.5rem 0;
  transition: color 0.3s ease;
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  width: 0; height: 2px;
  background: var(--cian);
  transition: all 0.35s var(--ease);
  transform: translateX(-50%);
}
.nav a:hover { color: var(--cian); }
.nav a:hover::after { width: 100%; }

.nav-cta {
  background: var(--lima);
  color: var(--teal-muy-oscuro) !important;
  padding: 0.65rem 1.5rem !important;
  border-radius: 50px;
  font-weight: 600 !important;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease !important;
}
.nav-cta:hover {
  background: var(--lima-suave);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(197, 244, 8, 0.5);
}
.nav-cta::after { display: none; }

/* Botón hamburguesa */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px; height: 32px;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}
.menu-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--blanco);
  transition: all 0.3s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Responsive */
@media (max-width: 900px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--teal-oscuro);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    border-top: 1px solid rgba(68, 220, 241, 0.18);
  }
  .nav.open { display: flex; }
  .menu-toggle { display: flex; }
}

@media (max-width: 640px) {
  :root { --header-h: 70px; }
  .header-inner { padding: 0 1rem; }
  .logo-text .nombre { font-size: 1.2rem; }
  .logo-text .lema { font-size: 0.6rem; letter-spacing: 1.5px; }
}