:root {
  --azul-marino: #001f3f;
  --celeste: #00bfff;
  --empresa-color: #667eea;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

main {
  flex: 1;
}

.navbar {
  background-color: #ffffff;
}

.navbar-brand img {
  width: 100px;
  height: 60px;
}

.navbar-brand span {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--empresa-color);
  text-wrap: initial;
}

.navbar-nav .nav-link {
  font-size: 1rem;
  color: #212529;
  transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
  color: var(--empresa-color);
  font-weight: 500;
}

.navbar-nav .nav-link.active {
  color: #fff !important;
  background-color: var(--empresa-color);
  border-radius: 8px;
  padding: 6px 12px;
  font-weight: 600;
}

.btn-login {
  color: var(--empresa-color);
  border-color: var(--empresa-color);
  transition: all 0.3s ease;
}

.btn-login:hover {
  background-color: var(--empresa-color);
  color: white;
}

.card-icon {
  font-size: 2.5rem;
  color: white;
  background: #0d6efd;
  border-radius: 50%;
  padding: 1rem;
  margin-bottom: 1rem;
}

.intro-text {
  max-width: 100% !important;
}

.info-card {
  background: linear-gradient(to bottom right, #e9ecef, #f8f9fa);
  border: none;
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
}

footer {
  background-color: #f8f9fa;
  margin-top: 2rem; /* separación para que no choque */
  padding: 1.5rem 0;
}

.img-fluid {
  max-width: 100%;
  height: auto;
}

.banner-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 6px;
  position: relative !important;
}

/* Offcanvas lateral */
#menuLateral.offcanvas-start {
  width: 250px !important;
  max-width: 250px !important;
}

.navbar-light .navbar-nav .nav-link {
  color: rgba(0, 0, 0, 0.99) !important;
}

/* Ajuste para row centrado */
.row.justify-content-center {
  padding: 1rem; /* espacio interno */
}
/* Pantallas grandes 2560px */
@media (min-width: 1921px) {
  .navbar-brand span {
    font-size: 2rem;
  }
  .card {
    max-width: 700px;
    margin: auto;
  }
}

/* Pantallas 1440px */
@media (max-width: 1440px) {
  .navbar-brand span {
    font-size: 1.4rem;
  }
  .card {
    max-width: 600px;
    margin: auto;
  }
}

/* Pantallas 1024px */
@media (max-width: 1024px) {
  .navbar-brand span {
    font-size: 1.2rem;
  }
  .navbar-brand img {
    width: 80px;
    height: 50px;
  }
  .card {
    padding: 1.5rem;
  }
}

/* Pantallas 768px (tablets) */
@media (max-width: 768px) {
  .navbar-brand span {
    font-size: 1rem;
    text-align: center;
    display: block;
  }
  .navbar-brand {
    flex-direction: column;
    align-items: center;
  }
  .navbar-brand img {
    height: 50px;
  }
  .card {
    padding: 1rem;
  }
}

/* Pantallas 425px (móviles grandes) */
@media (max-width: 425px) {
  .navbar-brand span {
    font-size: 0.95rem;
  }
  .btn-login {
    display: block;
    margin-top: 0.8rem; /* baja el botón login */
    font-size: 0.9rem;
    padding: 0.4rem 0.8rem;
  }
  .card {
    padding: 0.8rem;
  }
  h1 {
    font-size: 1.4rem;
  }
}

/* Pantallas 375px (móviles medianos) */
@media (max-width: 375px) {
  .navbar-brand span {
    font-size: 0.9rem;
  }
  .btn-login {
    font-size: 0.85rem;
    padding: 0.35rem 0.7rem;
  }
  .card {
    padding: 0.7rem;
  }
  h1 {
    font-size: 1.2rem;
  }
}

/* Pantallas 320px (móviles pequeños) */
@media (max-width: 320px) {
  .navbar-brand span {
    font-size: 0.85rem;
  }
  .navbar-brand img {
    height: 40px;
  }
  .btn-login {
    font-size: 0.8rem;
    padding: 0.3rem 0.6rem;
    margin-top: 0.6rem;
  }
  .card {
    padding: 0.6rem;
  }
  h1 {
    font-size: 1rem;
  }
}