:root {
  --color-primario: #15396d;       /* Azul institucional logo */
  --color-acento: #fbb316;         /* Amarillo anaranjado logo */
  --color-texto: #111111;          /* Negro intenso */
  --color-gris: #d6d6d6;           /* Gris claro libro */
  --color-fondo: #f5fafd;          /* Fondo claro */
  --borde-redondeado: 18px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Poppins', sans-serif;
  color: var(--color-texto);
  background: var(--color-fondo);
  min-height: 100vh;
}

header {
  background: linear-gradient(rgba(21,57,109,0.8),rgba(21,57,109,0.8)), url('../img/educacion-matematicas.jpg') center/cover no-repeat;
  color: #fff;
  padding: 90px 10px 40px 10px;
  text-align: center;
  position: relative;
}

main { margin-top: 80px; }

/* Navegación */
nav {
  width: 100%;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
  position: fixed;
  top: 0; left: 0; z-index: 99;
  display: flex; justify-content: space-between; align-items: center; padding: 0.7em 2em;
}
.logo {
  font-size: 1.2rem;
  color: var(--color-primario);
  font-weight: bold;
  letter-spacing: 1px;
  text-decoration: none;
  display: flex;
  align-items: center;
}
.logo img {
  height: 48px;
  margin-right: 8px;
  vertical-align: middle;
}
.nav-links {
  display: flex;
  gap: 1.5em;
}
.nav-links a {
  color: var(--color-primario);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: color .2s;
}
.nav-links a:hover {
  color: var(--color-acento);
}
.cta-btn {
  background: var(--color-acento);
  color: var(--color-primario);
  border: none;
  border-radius: var(--borde-redondeado);
  padding: 0.5em 1.2em;
  margin-left: 1em;
  font-weight: bold;
  cursor: pointer;
  transition: background .2s, color .2s;
  box-shadow: 0 3px 10px #0001;
}
.cta-btn:hover {
  background: var(--color-primario);
  color: var(--color-acento);
}
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}
.hamburger span {
  width: 26px;
  height: 3px;
  background: var(--color-primario);
  margin: 4px 0;
  border-radius: 2px;
  transition: .3s;
}

/* Aviso importante */
.aviso-importante {
  color: var(--color-primario);
  font-weight: 700;
  font-size: 1.13em;
  background: #fff8e0;
  padding: 0.6em 1.2em;
  border-radius: 12px;
  margin: 1em 0 1.5em 0;
  display: inline-block;
  border: 2px solid var(--color-acento);
  box-shadow: 0 2px 8px #0002;
}

/* Secciones generales */
section {
  padding: 55px 18px;
  max-width: 1050px;
  margin: auto;
}
h1 {
  font-size: 2.3rem;
  margin-bottom: 0.3em;
  color: var(--color-primario);
  font-weight: 800;
  text-shadow: 1px 2px 0px #fff6;
}
h2 {
  color: var(--color-primario);
  margin-bottom: 0.6em;
  font-size: 2rem;
  font-weight: 700;
}
.intro {
  font-size: 1.14rem;
  margin-bottom: 1.6em;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Programas / servicios */
.programas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
  gap: 25px;
}
.card {
  background: #fff;
  border: 2px solid var(--color-primario);
  border-radius: var(--borde-redondeado);
  padding: 1.3em 1em;
  box-shadow: 0 3px 10px #0001;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: box-shadow .2s, border .2s;
}
.card img {
  width: 80px;
  margin-bottom: 1em;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-acento);
  background: #fff;
}
.card h3 {
  margin-bottom: 0.5em;
  color: var(--color-primario);
  font-size: 1.2rem;
}
.card p {
  font-size: 1rem;
  color: #444;
}

/* Testimonios */
.testimonios {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
  gap: 25px;
}
.testimonio-card {
  background: #fff;
  border-radius: var(--borde-redondeado);
  border: 1.5px solid var(--color-acento);
  padding: 1.2em;
  box-shadow: 0 3px 12px #0002;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.testimonio-card img {
  width: 45px;
  height: 45px;
  object-fit: cover;
  border-radius: 50%;
  margin-bottom: 0.6em;
  border: 1.5px solid var(--color-primario);
  background: #fff;
}
.testimonio-card blockquote {
  font-size: 1rem;
  color: #333;
  font-style: italic;
  margin-bottom: 0.5em;
}
.testimonio-card footer {
  font-size: 0.95rem;
  color: var(--color-acento);
  font-weight: 600;
}

/* Formulario de contacto */
.contacto-form {
  background: #fff;
  border-radius: var(--borde-redondeado);
  box-shadow: 0 2px 8px #0002;
  padding: 1.5em;
  max-width: 400px;
  margin: auto;
  border: 1.5px solid var(--color-primario);
}
.contacto-form input,
.contacto-form textarea {
  width: 100%;
  margin-bottom: 1em;
  padding: 0.75em;
  border-radius: 8px;
  border: 1.2px solid #b5d4ef;
  font-size: 1rem;
  resize: vertical;
}
.contacto-form input:focus, .contacto-form textarea:focus {
  outline: 2px solid var(--color-primario);
  border-color: var(--color-primario);
}
.contacto-form button {
  width: 100%;
  padding: 0.7em;
  background: var(--color-primario);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: bold;
  cursor: pointer;
  transition: background .2s;
}
.contacto-form button:hover {
  background: var(--color-acento);
  color: var(--color-primario);
}

/* Inscripción */
#inscripcion {
  text-align: center;
}

/* Footer */
footer {
  background: var(--color-primario);
  color: #fff;
  text-align: center;
  padding: 1.1em 0;
  font-size: 1rem;
  margin-top: 50px;
  border-radius: 0 0 18px 18px;
}

/* Responsive */
@media (max-width: 700px) {
  h1 { font-size: 1.3rem; }
  h2 { font-size: 1.13rem; }
  nav { padding: 0.7em 0.7em; }
  section { padding: 35px 7px; }
  .card img { width: 54px; }
  .logo img { height: 38px; }
}
@media (max-width: 850px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 5px 16px #0002;
  }
  .nav-links.active { display: flex; }
  .hamburger { display: flex; }
}
/* ...todo tu CSS anterior aquí... */

/* Animaciones elegantes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1.2s ease-out, transform 1.2s cubic-bezier(.17,.67,.83,.67);
}
.fade-in.visible,
.fade-in.animated, /* por si quieres usar clases extra */
.fade-in[data-visible="true"] {
  opacity: 1;
  transform: none;
}

@keyframes pulse {
  0% { transform: scale(1);}
  100% { transform: scale(1.07);}
}

/* Aplica pulse SOLO al aviso */
.aviso-importante.pulse {
  animation: pulse 1.4s infinite alternate;
}

/* Logo animado en menú */
.logo img {
  transition: transform 0.6s cubic-bezier(.42,0,.58,1.0);
}
.logo img:hover {
  transform: rotate(-6deg) scale(1.08);
}

/* Botón animado */
.cta-btn {
  transition: background 0.25s, color 0.25s, transform 0.18s;
}
.cta-btn:hover {
  transform: scale(1.06);
}

/* (mantén el resto del CSS que te di para los colores, responsive, etc.) */