/*
Abismo Marino - Buceo 
Jose Maria Lopez de Uralde Martinez
mailto: jmld6@arroba@alu.ua.es
*/

/* CONFIGURACIÓN BASE Y CUERPO */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    background-image: url("fondo-mar.jpg"); 
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: #001220; 
    color: #ffffff; 
    font-family: Arial, Helvetica, sans-serif;
}

/* CONTENEDOR PRINCIPAL */
#contenedor {
    width: 95%;
    max-width: 1200px;
    margin: 20px auto;
    padding: 35px;
    background-color: rgba(0, 15, 30, 0.85); 
    border: 1px solid #00ffff;
    border-radius: 15px;
    box-shadow: 0 0 40px rgba(0, 255, 255, 0.2);
}

@media screen and (min-width: 900px) {
    #contenedor {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 35px;
    }
    #intro { grid-column: 1 / span 2; }
    #apartados { grid-column: 1; }
    #enlaces, #enlacesintra, #enlacesversiones { 
        grid-column: 2; 
        background: rgba(0, 255, 255, 0.05);
        padding: 20px;
        border-radius: 10px;
        border: 1px solid rgba(0, 255, 255, 0.3);
        margin-bottom: 20px;
    }
}

@media screen and (max-width: 899px) {
    #contenedor { width: 100%; margin: 0; border-radius: 0; }
}

/* TÍTULOS CON RECUADROS Y CONTRASTE ALTO*/
h1, h3 {
    background: rgba(0, 255, 255, 0.1); 
    border-left: 5px solid #00ffff;
    padding: 15px 20px;
    color: #00ffff;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 0 10px 10px 0;
    margin-bottom: 25px;
}

h1 {
    font-size: 2.2em;
    border-bottom: none; 
}

h2 {
    color: #80deea;
    font-size: 1.4em;
    margin: 15px 0 25px 5px;
    border-bottom: 1px solid rgba(0, 255, 255, 0.3);
    display: inline-block;
}

/*EFECTO DE MOVIMIENTO DE AGUA  */
h1 span, h3 span {
    display: inline-block;
    animation: oleaje 4s infinite ease-in-out;
}

@keyframes oleaje {
    0%, 100% { transform: translateX(0) translateY(0); }
    33% { transform: translateX(3px) translateY(-2px); }
    66% { transform: translateX(-2px) translateY(1px); }
}

/* Burbujas decorativas  */
h1 span::before, h3 span::before {
    content: "°";
    position: absolute;
    left: -15px;
    top: -10px;
    font-size: 1.5em;
    color: #fff;
    opacity: 0.6;
    animation: burbujear 2s infinite;
}

@keyframes burbujear {
    0% { transform: translateY(0); opacity: 0; }
    50% { opacity: 0.8; }
    100% { transform: translateY(-20px); opacity: 0; }
}

/* TEXTO Y ENLACES */
p, li, dd {
    color: #ffffff; 
    line-height: 1.8;
    margin-bottom: 15px;
}

a {
    color: #00ffff;
    font-weight: bold;
    text-decoration: underline;
}

a:hover, a:focus {
    color: #ffffff;
    background-color: #006064;
    outline: 2px solid #ffffff;
    text-decoration: none;
}

/*  DECORACIÓN Y LISTAS */
dt {
    font-weight: bold;
    color: #00ffff;
    margin-top: 25px;
    background: rgba(0, 255, 255, 0.05);
    padding: 5px 10px;
    border-radius: 4px;
}

dd {
    margin: 10px 0 20px 20px;
    padding-left: 15px;
    border-left: 2px solid #008b8b;
}

#extraDiv1 {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 80px;
    height: 80px;
    z-index: 100;
    opacity: 0.6;
    pointer-events: none; 
}

#extraDiv1 span {
    display: block;
    width: 100%;
    height: 100%;
    background-image: url("ancla.png");
    background-size: contain;
    background-repeat: no-repeat;
}