/* Reset básico y configuración global */
* {
box-sizing: border-box;
}

html {
background-color: #f4f4f4;
/* Fondo suave para la ventana */
min-height: 100%;
}

body {
max-width: 50rem;
margin: 2rem auto;
padding: 2rem 3rem;
background-color: #fffdfa;
/* Fondo tipo tarjeta/papel */
color: #333;
font-size: 1.125rem;
line-height: 1.5;
border: 1px solid #969191;
border-radius: 12px;
box-shadow: 0 2px 12px 2px #bbb;
text-align: left;
}

header,
footer {
text-align: center;
background-color: #f0f0f0;
padding: 1.5rem;
border-radius: 8px;
border: 1px solid #9e9d9d;
margin-bottom: 2rem;box-shadow: 0 1px 3px 1px #bbb;
}

h1 {
color: #2e0b67;
/* Tono rojizo elegante (Firebrick) */
font-size: 2.2rem;
font-weight: 300;
margin: 0.5rem 0;
text-align: center;
}

h2 {
color: #2e0b67;
font-size: 1.6rem;
font-weight: 500;
border-bottom: 1px solid #eee;
padding-bottom: 0.5rem;
margin-top: 2rem;
margin-bottom: 1rem;
}

h3 {
color: #2e0b67;
font-size: 1.25rem;
font-weight: 600;
margin-top: 1.5rem;
margin-bottom: 0.8rem;
}

p {
margin-bottom: 1.2rem;
text-align: justify;
}

a {
color: #a93226;
text-decoration: none;
font-weight: 500;
transition: color 0.2s ease;
line-height: 2.5rem;
font-size: 1.2rem;
}

a:hover {
color: #c0392b;
text-decoration: underline;
}

a:visited {
color: #7b241c;
}

hr {
border: 0;
height: 1px;
background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0));
margin: 2.5rem 0;
}

/* Ajustes para móviles */
@media (max-width: 768px) {
body {
margin: 1rem;
padding: 1.5rem;
width: auto;
border-radius: 8px;
}

h1 {
font-size: 1.8rem;
}

h2 {
font-size: 1.4rem;
}
}

/* Navegación entre capítulos */
#navegacion-capitulos {
display: flex;
justify-content: space-between;
margin: 2rem 0;
padding-top: 1.5rem;
border-top: 1px solid #e0e0e0;
}

.nav-btn {
display: inline-block;
padding: 0.5rem 1rem;
background-color: #f9f9f9;
border: 1px solid #ddd;
border-radius: 6px;
color: #a93226;
font-weight: 600;
transition: all 0.2s ease;
}

.nav-btn:hover {
background-color: #a93226;
color: white;
text-decoration: none;
border-color: #a93226;
}

/* Navegación entre capítulos */
#navegacion-capitulos {
display: flex;
justify-content: space-between;
margin: 2rem 0;
padding-top: 1.5rem;
border-top: 1px solid #e0e0e0;
}

.nav-btn {
display: inline-block;
padding: 0.5rem 1rem;
background-color: #f9f9f9;
border: 1px solid #ddd;
border-radius: 6px;
color: #a93226;
font-weight: 600;
transition: all 0.2s ease;
}

.nav-btn:hover {
background-color: #a93226;
color: white;
text-decoration: none;
border-color: #a93226;
}