/* RYU v3.1: cover UI and accessible transition */
.file-remove{margin-left:12px;background:#432b2b;border:1px solid #9e6767;color:#ffe4df;padding:3px 9px;border-radius:5px;cursor:pointer}
.upload-option{display:flex;gap:8px;align-items:center;margin:14px 0;color:#d5c5b4}
.cover-book{box-shadow:2px 3px 0 #dbd0bd,4px 5px 0 #96877a,10px 15px 28px #0009!important;transition:transform .85s cubic-bezier(.2,.7,.15,1),opacity .4s ease!important}
.cover-book.ryu-flipping{transform:perspective(1200px) rotateY(-88deg) scale(.97)!important}
.cover-book.ryu-opening{transform:perspective(1200px) rotateY(-68deg) translateX(-12%)!important;opacity:.6}
.cover-real-image{image-rendering:auto;object-fit:contain}
.cover-zoom{cursor:zoom-in}
.cover-real-image{backface-visibility:hidden}
@media(prefers-reduced-motion:reduce){.cover-book{transition:none!important}}