/* ===================================================
   LUMACA'S REFUGIUM
   STORY ENGINE
   Version 1.0
=================================================== */

/* ==========================================
   RESET
========================================== */

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

html,
body{

    width:100%;
    height:100%;
    overflow:hidden;

    font-family:Arial, Helvetica, sans-serif;

}

/* ==========================================
   HINTERGRUND
========================================== */

body{

    background:

        url("assets/story/chroniken-start.png")

        center center

        / cover

        no-repeat

        fixed;

}

/* ==========================================
   HEADER
========================================== */

#topbar{

    position:fixed;

    top:0;
    left:0;

    width:100%;
    height:70px;

    display:flex;

    justify-content:space-between;

    align-items:center;

    padding:0 40px;

    background:rgba(0,0,0,.55);

    backdrop-filter:blur(8px);

    border-bottom:1px solid rgba(205,170,90,.35);

    z-index:1000;

}

/* ==========================================
   LOGO
========================================== */

#logo{

    display:flex;

    align-items:center;

    gap:15px;

}

#logo img{

    width:42px;

    height:42px;

}

#logo span{

    color:#d9ba6a;

    font-size:28px;

    font-weight:700;

    letter-spacing:2px;

    text-transform:uppercase;

}

/* ==========================================
   NAVIGATION
========================================== */

nav{

    display:flex;

    gap:45px;

}

nav a{

    position:relative;

    color:#d7bf85;

    text-decoration:none;

    font-family:"Cinzel",serif;

    font-size:22px;

    letter-spacing:1px;

    transition:all .35s ease;

    text-transform:uppercase;

}

nav a:hover{

    color:#fff3c6;

    text-shadow:

        0 0 8px rgba(255,220,120,.65),

        0 0 20px rgba(255,200,80,.35);

}

nav a::after{

    content:"";

    position:absolute;

    left:0;

    bottom:-10px;

    width:0;

    height:2px;

    background:linear-gradient(

        90deg,

        transparent,

        #d7b15c,

        transparent

    );

    transition:.35s;

}

nav a:hover::after,
nav a.active::after{

    width:100%;

}

/* ==========================================
   UNSICHTBARE BUTTONS
========================================== */

button{

    position:absolute;

    background:transparent;

    border:none;

    cursor:pointer;

}

/* Buch öffnen */

#openBook{

    left:50%;

    top:71.2%;

    transform:translate(-50%,-50%);

    width:270px;

    height:70px;

}

/* Musik */

#musicButton{

    left:15px;

    bottom:15px;

    width:180px;

    height:45px;

}

/* Vollbild */

#fullscreenButton{

    right:20px;

    bottom:15px;

    width:110px;

    height:45px;

}

/* ==========================================
   DEBUGMODUS
========================================== */

.debug button{

    background:rgba(255,0,0,.35);

    border:2px solid yellow;

}

/* ==========================================
   RESPONSIVE
========================================== */

@media(max-width:900px){

    #topbar{

        padding:0 20px;

    }

    #logo span{

        font-size:20px;

    }

    nav{

        gap:20px;

    }

    nav a{

        font-size:15px;

    }

}

/* ==========================================
   BUCH LEUCHTEN
========================================== */

#bookGlow{

    position:absolute;

    left:50%;
    top:66.5%;

    transform:translate(-50%,-50%);

    width:320px;
    height:110px;

    border-radius:18px;

    pointer-events:none;

    opacity:0;

    transition:.4s;

    background:radial-gradient(

        ellipse,

        rgba(255,200,80,.45),

        rgba(255,170,40,.15),

        transparent 70%

    );

    filter:blur(18px);

}

#openBook:hover + #bookGlow{

    opacity:1;

    animation:bookGlow 1.8s ease-in-out infinite;

}

@keyframes bookGlow{

    0%{

        transform:translate(-50%,-50%) scale(1);

    }

    50%{

        transform:translate(-50%,-50%) scale(1.06);

    }

    100%{

        transform:translate(-50%,-50%) scale(1);

    }

}