body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f9f9fb;
  color: #333;
}

/* Títulos */
h2 {
  color: rgba(46, 122, 105, 0.92);
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

/* navbar*/
.navbar {
  background-color: #1f1f2e;
}
.navbar-brand {
  font-weight: bold;
}
.navbar-nav .nav-link {
  color: #ccc;
}
.navbar-nav .nav-link:hover {
  color: #fff;
}
#buscador {
  margin-left: auto;
  margin-right: 10px;
}

/* Tarjetas de libros */
#lista-libros .card {
  height: 100%;
  border: none;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background-color: #fff;
}

#lista-libros .card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.card-img-top {
  height: 420px;
  object-fit: cover;
}

.card-body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-title {
  font-weight: bold;
  color: #222;
  margin-bottom: 0.5rem;
}

.card-text {
  font-size: 0.95rem;
  color: #444;
  margin-bottom: 0.4rem;
}

/* Botones tipo ícono */
.card-body .acciones {
  display: flex;
  justify-content: space-around;
  margin-top: 1rem;
}

.btn-icon {
  width: 36px;
  height: 36px;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.btn-bookmark {
  background-color: white;
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

.btn-bookmark:hover {
  background-color: #f8f9fa;
}
.btn-icon:hover {
  transform: scale(1.1);
}

.btn-icon i {
  pointer-events: none;
}

.btn-leer {
  color: #2e7d32;
  border-color: #2e7d32;
}
.btn-leer:hover {
  background-color: #2e7d32;
  color: white;
}

.btn-guardar {
  color: #b71c1c;
  border-color: #b71c1c;
}
.btn-guardar:hover {
  background-color: #b71c1c;
  color: white;
}

.btn-prestamo {
  color: #1565c0;
  border-color: #1565c0;
}
.btn-prestamo:hover {
  background-color: #1565c0;
  color: white;
}

/* Ícono corazón */
.favorito-activo {
  color: white !important;
  background-color: #b71c1c !important;
  border-color: #b71c1c !important;
}

.boton-registro {
  background-color: rgba(46, 122, 105, 0.92); /* verde */
  color: white;
  border: none;
  border-radius: 0.5rem;
  padding: 0.6rem 1rem;
  font-weight: 600;
  font-size: 1rem;
  transition: background-color 0.3s ease, transform 0.2s ease;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.boton-registro:hover {
  background-color: rgb(16, 16, 16);
  transform: scale(1.02);
  color: white;
}
.imagen-registro {
  max-width: 80%;
  height: auto;
  border-radius: 1rem;
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

footer {
  background-color: #1f1f2e;
  color: #ccc;
  font-size: 0.9rem;
  padding: 1.5rem 0;
  margin-top: 3rem;
}