.alumnos-section {
  scroll-margin-top: 80px; /* que el header fijo no tape el título al navegar a #biblioteca */
}

/* ---------- Tarjeta (escritorio) ---------- */
.alumnos-card {
  display: flex;
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem); /* más aire entre imagen y texto */
  padding: clamp(1.5rem, 3.5vw, 3rem);
  border-radius: 1rem;
  color: #f3f4f6;
  background: linear-gradient(135deg, #1e40af 0%, #0f172a 70%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.6);
}

/* ---------- Imagen ---------- */
.alumnos-image {
  flex-shrink: 0;
  width: clamp(160px, 22vw, 240px);
  aspect-ratio: 1 / 1;
  border-radius: 12px;
  overflow: hidden;
}

.alumnos-image img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* usá "contain" si no querés que se recorte */
  display: block;
}

.alumnos-content {
  flex: 1 1 auto;
  min-width: 0;
}

/* ---------- Etiqueta "Acceso libre" ---------- */
.alumnos-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.9rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #60a5fa;
  background: rgba(59, 92, 225, 0.15);
  border: 1px solid rgba(238, 236, 250, 0.246);
}

.alumnos-badge i {
  color: #bfdbfe;
}

.alumnos-title {
  margin: 0 0 0.6rem;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
}

.alumnos-text {
  margin: 0 0 1rem;
  max-width: 60ch;
  line-height: 1.6;
  color: #d1d5db;
}

.alumnos-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  margin: 0 0 1.6rem;
  padding: 0;
  list-style: none;
  font-weight: 600;
  color: #e5e7eb;
}

.alumnos-list i {
  margin-right: 0.45rem;
  color: #60a5fa;
}

/* ---------- Botón principal ---------- */
.alumnos-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1.8rem;
  border-radius: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: #0f172a;
  background: #fff;
  box-shadow: 0 6px 18px -6px rgba(0, 0, 0, 0.5);
  transition:
    transform 0.15s ease,
    background 0.15s ease,
    box-shadow 0.15s ease;
}

.alumnos-btn:hover,
.alumnos-btn:focus-visible {
  color: #0f172a;
  background: #dbeafe;
  transform: translateY(-2px);
  box-shadow: 0 10px 22px -8px rgba(0, 0, 0, 0.6);
  outline: none;
}

.alumnos-btn:focus-visible {
  outline: 3px solid #93c5fd;
  outline-offset: 3px;
}

.alumnos-btn-arrow {
  font-size: 0.8em;
  opacity: 0.7;
}

/* ---------- Puntos de confianza ---------- */
.alumnos-perks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  margin: 1.2rem 0 0;
  padding: 1.1rem 0 0;
  list-style: none;
  font-size: 0.85rem;
  color: #9ca3af;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.alumnos-perks i {
  margin-right: 0.4rem;
  color: #bfdbfe;
}

/* ---------- Tablet (768px a 1023px) ---------- */
@media (max-width: 1023px) {
  .alumnos-image {
    width: 170px;
  }

  .alumnos-card {
    gap: 2.5rem;
  }
}

/* ---------- Celulares y tablets chicas (hasta 767px) ---------- */
@media (max-width: 767px) {
  .alumnos-card {
    flex-direction: column;
    align-items: stretch;
    gap: 1.75rem;
    padding: 1.25rem;
  }

  .alumnos-image {
    width: 100%;
    aspect-ratio: 16 / 9;
  }

  .alumnos-btn {
    width: 100%;
    justify-content: center;
    padding: 1rem 1.2rem;
  }
}

/* ---------- Celulares chicos (hasta 479px) ---------- */
@media (max-width: 479px) {
  .alumnos-card {
    padding: 1rem;
    gap: 1.5rem;
  }

  .alumnos-image {
    aspect-ratio: 4 / 3;
  }

  .alumnos-list {
    flex-direction: column;
    gap: 0.6rem;
  }

  .alumnos-btn {
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    gap: 0.5rem;
  }

  .alumnos-perks {
    flex-direction: column;
    gap: 0.5rem;
  }
}