@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=DM+Mono:wght@300;400;500&display=swap');/*it can be detel*/

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

html, body {
    min-height: 100vh;
    background: var(--black);
    font-family: 'DM Mono', monospace;
    color: var(--cream);
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed; inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 30%, rgba(139,46,22,.20) 0%, transparent 65%),
        radial-gradient(ellipse 50% 60% at 80% 70%, rgba(29,52,97,.22) 0%, transparent 65%),
        radial-gradient(ellipse 40% 40% at 50% 50%, rgba(201,169,110,.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

header {
    position: sticky; top: 0; z-index: 100;
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    background: rgba(8,6,4,.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
.header-left  { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.header-center { flex: 1; max-width: 400px; }
.header-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

header h1 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.2rem; font-weight: 300;
    letter-spacing: .06em; color: var(--cream); white-space: nowrap;
}

#shelf-count {
    font-size: .62rem; letter-spacing: .2em;
    background: rgba(201,169,110,.10); color: var(--gold);
    border: 1px solid var(--gold-dim);
    padding: 3px 12px; border-radius: 20px; white-space: nowrap;
}

.home-btn-add {
    font-family: 'DM Mono', monospace;
    font-size: .62rem; letter-spacing: .16em; text-transform: uppercase;
    color: var(--black); background: var(--gold); border: 1px solid var(--gold);
    text-decoration: none; padding: 7px 16px; border-radius: 2px;
    font-weight: 600; white-space: nowrap;
    transition: background .2s, box-shadow .2s;
}
.home-btn-add:hover { background: #e0bb7a; box-shadow: 0 0 18px rgba(201,169,110,.35); }

#theme-group, #lang-group { display: flex; gap: 5px; }
#theme-group button, #lang-group button {
    font-family: 'DM Mono', monospace;
    font-size: .6rem; letter-spacing: .12em; text-transform: uppercase;
    padding: 5px 10px; border: 1px solid var(--gold-dim);
    background: transparent; color: var(--muted);
    cursor: pointer; border-radius: 2px;
    transition: background .2s, color .2s, border-color .2s;
}
#theme-group button:hover, #theme-group button.active,
#lang-group button:hover,  #lang-group button.active {
    background: var(--gold); border-color: var(--gold); color: var(--black);
}

#search-wrap { position: relative; display: flex; align-items: center; }
.search-icon { position: absolute; left: 10px; font-size: 1.05rem; color: var(--gold-dim); pointer-events: none; line-height: 1; }
#genre-filter {
    width: 100%; padding: 7px 12px 7px 30px;
    font-family: 'DM Mono', monospace; font-size: .72rem; letter-spacing: .05em;
    border: 1px solid var(--border); border-radius: 2px;
    background: var(--input-bg); color: var(--cream); outline: none;
    transition: border-color .2s, box-shadow .2s;
}
#genre-filter:focus { border-color: var(--gold-dim); box-shadow: 0 0 0 2px rgba(201,169,110,.08); }
#genre-filter::placeholder { color: var(--muted); }

main {
    position: relative; z-index: 1;
    padding: 32px 40px 80px;
    max-width: 1320px;
    margin: 0 auto;
}

.book-card {
    display: flex; flex-direction: column; align-items: center;
    gap: 10px; cursor: pointer;
    transition: transform .25s ease;
}
.book-card:hover { transform: translateY(-5px); }

.book-3d { perspective: 600px; width: 80px; height: 120px; position: relative; }
.book-3d-inner {
    width: 80px; height: 120px; position: relative;
    transform-style: preserve-3d; transform: rotateY(-25deg);
    transition: transform 0.4s ease;
    animation: book-float 3s ease-in-out infinite;
}
.book-3d:hover .book-3d-inner { transform: rotateY(-45deg); }
.book-face {
    position: absolute; width: 80px; height: 120px;
    border-radius: 0 3px 3px 0;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 7px; text-align: center; overflow: hidden;
}
.book-face-title { font-size: .44rem; font-weight: 700; color: rgba(255,255,255,.92); line-height: 1.3; z-index: 1; position: relative; }
.book-face-deco { position: absolute; bottom: 9px; left: 50%; transform: translateX(-50%); width: 55%; height: 1px; background: rgba(255,255,255,.22); }
.book-spine { position: absolute; left: 0; top: 0; width: 14px; height: 120px; transform: rotateY(90deg) translateZ(-7px); transform-origin: left center; border-radius: 1px 0 0 1px; }
.book-shadow { position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%); width: 60px; height: 10px; background: radial-gradient(ellipse, rgba(0,0,0,.40) 0%, transparent 70%); filter: blur(4px); }

@keyframes book-float {
    0% { transform: rotateY(-25deg) translateY(0px); }
    50% { transform: rotateY(-25deg) translateY(-4px); }
    100% { transform: rotateY(-25deg) translateY(0px); }
}

.book-card-info { width: 100%; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.book-card-title { font-family: 'Cormorant Garamond', serif; font-size: .92rem; font-weight: 400; font-style: italic; color: var(--cream); line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.book-card-author { font-family: 'DM Mono', monospace; font-size: .6rem; letter-spacing: .07em; color: var(--gold); }
.book-card-genre { font-family: 'DM Mono', monospace; font-size: .54rem; letter-spacing: .13em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--border); padding: 2px 8px; border-radius: 20px; display: inline-block; }
.book-card-stars { font-size: .8rem; letter-spacing: 2px; display: block; }
.book-card-unrated { font-family: 'DM Mono', monospace; font-size: .52rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); opacity: .5; }
.book-card-actions { display: flex; gap: 5px; justify-content: center; flex-wrap: wrap; margin-top: 4px; width: 100%; }

.bc-btn {
    font-family: 'DM Mono', monospace; font-size: .55rem; letter-spacing: .1em; text-transform: uppercase;
    padding: 4px 10px; border: 1px solid var(--border); background: transparent; color: var(--muted);
    cursor: pointer; border-radius: 2px; text-decoration: none;
    display: inline-flex; align-items: center; gap: 3px; line-height: 1;
    transition: border-color .2s, color .2s, background .2s;
}
.bc-btn:hover { border-color: var(--gold-dim); color: var(--gold); background: rgba(201,169,110,.06); }
.bc-btn-delete:hover { border-color: rgba(180,60,40,.6); color: #d96060; background: rgba(180,60,40,.08); }

.shelf-empty { grid-column: 1 / -1; text-align: center; padding: 100px 20px; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.shelf-empty-icon { font-size: 2.8rem; opacity: .15; display: block; }
.shelf-empty-title { font-family: 'Cormorant Garamond', serif; font-size: 1.5rem; font-weight: 300; color: var(--cream); opacity: .45; }
.shelf-empty-sub { font-size: .63rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold-dim); }
.shelf-empty-link { font-family: 'DM Mono', monospace; font-size: .63rem; letter-spacing: .14em; text-transform: uppercase; color: var(--black); background: var(--gold); border: 1px solid var(--gold); text-decoration: none; padding: 8px 22px; border-radius: 2px; font-weight: 600; margin-top: 6px; transition: background .2s, box-shadow .2s; }
.shelf-empty-link:hover { background: #e0bb7a; box-shadow: 0 0 18px rgba(201,169,110,.3); }

#toasts { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.toast { font-family: 'DM Mono', monospace; font-size: .7rem; letter-spacing: .1em; padding: 10px 18px; border-radius: 3px; border: 1px solid var(--gold-dim); background: rgba(8,6,4,.92); color: var(--gold); backdrop-filter: blur(8px); animation: toastIn .3s ease both; }
@keyframes toastIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

@keyframes fadeUp { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: translateY(0); } }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 2px; }

@media (max-width: 900px) {
    header { height: auto; padding: 12px 20px; flex-wrap: wrap; gap: 10px; }
    .header-center { order: 3; width: 100%; max-width: 100%; }
    main { padding: 28px 20px 60px; }
}
@media (max-width: 480px) {
    header h1 { display: none; }
}