:root{--bg-color:#050505;--text-color:#d8c3a5;--accent-color:#8b0000;--page-bg:url(/bg.png)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);background:radial-gradient(circle,#1a1a1a 0%,#000 100%);justify-content:center;align-items:center;min-height:100vh;font-family:Palatino Linotype,Book Antiqua,Palatino,serif;display:flex;overflow:hidden}#app{flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;display:flex}h1{letter-spacing:5px;text-shadow:0 0 10px #8b0000cc;margin-bottom:10px;font-size:2.5rem}.audio-control{text-align:center;z-index:100;pointer-events:none;position:absolute;top:40px}.controls{z-index:100;gap:20px;display:flex;position:absolute;bottom:40px}.nav-btn{color:var(--text-color);border:1px solid var(--text-color);cursor:pointer;text-transform:uppercase;letter-spacing:2px;background:#0a0a0acc;border-radius:4px;padding:12px 24px;font-family:inherit;font-size:1.2rem;transition:all .3s;box-shadow:0 4px 6px #00000080}.nav-btn:hover{background:var(--accent-color);color:#fff;border-color:var(--accent-color);box-shadow:0 0 15px #8b0000cc}.nav-btn:disabled{opacity:.3;cursor:not-allowed;pointer-events:none;color:#555;background:0 0;border-color:#555}.book-container{perspective:2500px;width:900px;height:600px;position:relative;transform:scale(.9)rotateX(15deg)}.book{width:100%;height:100%;transform-style:preserve-3d;position:relative}.page{transform-origin:0;width:50%;height:100%;transform-style:preserve-3d;transition:transform 1.5s cubic-bezier(.645,.045,.355,1);position:absolute;top:0;right:0}.front,.back{backface-visibility:hidden;background-image:var(--page-bg);width:100%;height:100%;transform-style:preserve-3d;background-position:50%;background-size:cover;border:2px solid #3a2a1a;border-radius:2px 8px 8px 2px;position:absolute;box-shadow:inset 0 0 50px #000c,2px 4px 15px #0009}.back{border-radius:8px 2px 2px 8px;transform:rotateY(180deg)}.front:before,.back:before{content:"";pointer-events:none;background:linear-gradient(90deg,#000c 0%,#0000 100%);width:40px;height:100%;position:absolute;top:0;left:0}.back:before{background:linear-gradient(270deg,#000c 0%,#0000 100%);left:auto;right:0}.page-content{height:100%;transform-style:preserve-3d;flex-direction:column;justify-content:center;align-items:center;padding:40px;display:flex;position:relative}.popup{transform-origin:bottom;filter:drop-shadow(0 -10px 30px #000000e6);mix-blend-mode:screen;opacity:0;pointer-events:none;background-position:bottom;background-repeat:no-repeat;background-size:contain;width:100%;height:110%;transition:transform 1.5s cubic-bezier(.645,.045,.355,1),opacity .5s;position:absolute;bottom:5%;transform:rotateX(90deg)translateZ(5px)}.page.flipped .back .popup,.page.active .front .popup{opacity:1;transform:rotateX(0)translateZ(10px)}.popup-wrapper{perspective:2000px;width:100%;height:100%;transform-style:preserve-3d;justify-content:center;display:flex;position:absolute;top:0;left:0}.monster-title{color:var(--accent-color);text-shadow:2px 2px 10px #000, 0 0 5px var(--accent-color);writing-mode:vertical-rl;letter-spacing:15px;opacity:0;font-size:3rem;transition:opacity 1s 1s,transform 1s 1s;position:absolute;top:8%;left:8%;transform:translateZ(5px)translate(-20px)}.page.flipped .back .monster-title,.page.active .front .monster-title{opacity:1;transform:translateZ(5px)translate(0)}.monster-desc{color:#ccc;opacity:0;background:#0a0505d9;border:1px solid #4a0000;width:84%;padding:20px;font-size:1.1rem;line-height:1.8;transition:opacity 1s 1.2s,transform 1s 1.2s;position:absolute;bottom:8%;left:8%;transform:translateZ(5px)translateY(20px);box-shadow:0 0 20px #000000e6}.page.flipped .back .monster-desc,.page.active .front .monster-desc{opacity:1;transform:translateZ(5px)translateY(0)}.cover{background-image:var(--page-bg);background-blend-mode:multiply;background-color:#111;border:4px solid #2a1a1a;justify-content:center;align-items:center;width:100%;height:100%;display:flex;box-shadow:inset 0 0 100px #000}.cover-content{border:2px solid var(--accent-color);background:#0009;padding:40px;box-shadow:0 0 30px #8b00004d}.cover h2{color:var(--accent-color);text-shadow:0 0 30px #000, 0 0 15px var(--accent-color);writing-mode:vertical-rl;letter-spacing:30px;margin:0;font-size:5rem}