:root{
  --bg:#eef3f9;
  --card:#ffffff;
  --text:#12233f;
  --muted:#667085;
  --primary:#2753e6;
  --primary-dark:#1939a6;
  --line:#dbe4f0;
  --shadow:0 12px 35px rgba(18,35,63,.08);
  --radius:24px;
  --dynamic-cover-height:260px;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
body.mono-mode{filter:grayscale(1)}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{max-width:1440px;margin:0 auto;padding:0 20px}

.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar{display:grid;grid-template-columns:280px 1fr auto;gap:18px;align-items:center;padding:16px 0}
.brand{display:flex;align-items:center;gap:12px}
.logo-box{width:64px;height:64px;border-radius:20px;background:#fff;border:1px dashed #b8c6db;display:flex;align-items:center;justify-content:center;overflow:hidden}
.logo-box img{width:100%;height:100%;object-fit:cover}
.brand strong{display:block;font-size:28px}
.brand small{display:block;color:var(--muted);margin-top:4px}

.search-bar{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px}
.search-bar input{flex:1;border:none;outline:none;font-size:17px;padding:8px 12px;background:transparent}
.search-bar button{border:none;background:var(--primary);color:#fff;border-radius:999px;padding:14px 24px;cursor:pointer;font-weight:700}
.header-actions{display:flex;gap:10px;align-items:center}
.pill,.icon-btn{background:#fff;border:1px solid var(--line);border-radius:999px;padding:12px 18px;transition:.25s ease}
.pill:hover,.icon-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.lang-switch{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff}
.lang-switch a{padding:10px 14px;font-weight:700;color:var(--muted)}
.lang-switch a.active{background:var(--primary);color:#fff}

.page-wrap{padding:24px 0}
.main-grid{display:grid;grid-template-columns:280px 1fr;gap:24px}
.genre-panel,.section-card,.admin-content,.admin-sidebar{background:#fff;border-radius:28px;box-shadow:var(--shadow)}
.genre-panel{padding:20px;position:sticky;top:110px}
.genre-panel h3{margin-top:0}
.genre-link{display:block;padding:14px 16px;border-radius:16px;margin-bottom:10px;background:#f2f6fb;transition:.25s ease}
.genre-link:hover{background:#dbe7ff;color:var(--primary);transform:translateX(4px)}
.genre-link.active{background:#18357f;color:#fff}

.section-card{padding:20px;margin-bottom:24px}
.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.section-head h2{margin:0;font-size:38px;color:#4c63dd}
.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.book-card{background:#fff;border-radius:26px;overflow:hidden;box-shadow:var(--shadow);transition:transform .28s ease, box-shadow .28s ease}
.book-card:hover{transform:translateY(-8px) scale(1.02);box-shadow:0 18px 42px rgba(18,35,63,.16)}
.book-cover{position:relative;height:var(--dynamic-cover-height);background-size:cover;background-position:center}
.book-overlay{position:absolute;inset:0;background:linear-gradient(to top, rgba(0,0,0,.75), rgba(0,0,0,.1))}
.book-badge{position:absolute;top:14px;right:14px;background:#fff;color:#111;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}
.genre-badge{position:absolute;left:14px;bottom:68px;background:rgba(255,255,255,.24);color:#fff;border-radius:999px;padding:7px 11px;font-size:13px}
.book-meta{position:absolute;left:14px;right:14px;bottom:14px;color:#fff}
.book-meta h3{margin:0 0 6px;font-size:18px;line-height:1.15}
.book-meta p{margin:0;font-size:13px;color:#e7edff}
.book-footer{display:flex;justify-content:space-between;align-items:center;padding:14px}
.book-open{background:#142e7a;color:#fff;padding:11px 18px;border-radius:16px;font-weight:700}
.book-stats{font-size:14px;color:var(--muted)}

.accessibility-panel{position:fixed;right:24px;top:100px;z-index:60}
.accessibility-panel.hidden{display:none}
.acc-card{width:320px;background:#fff;border-radius:24px;padding:18px;box-shadow:var(--shadow);border:1px solid var(--line)}
.acc-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.acc-head button{border:none;background:#f2f5fb;border-radius:12px;width:38px;height:38px;cursor:pointer}
.acc-btn{width:100%;margin-bottom:10px;padding:14px;border:none;border-radius:16px;background:#eef2f7;cursor:pointer;font-weight:700}
.acc-card label{display:block;font-size:14px;margin-top:10px}
.acc-card select{width:100%;margin-top:6px;padding:12px;border:1px solid var(--line);border-radius:14px}

.alert{padding:14px 16px;border-radius:16px;margin-bottom:16px}
.alert.success{background:#ecfdf5;color:#065f46}
.alert.error{background:#fef2f2;color:#991b1b}

.site-footer{margin-top:40px;background:linear-gradient(135deg,#0f1f48,#122a6e);color:#fff;padding-top:38px}
.footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:28px}
.footer-brand,.footer-col{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:26px;padding:24px}
.footer-logo{width:86px;height:86px;border-radius:22px;object-fit:cover;background:#fff}
.fallback-logo{width:86px;height:86px;border-radius:22px;background:#fff;color:#122a6e;display:flex;align-items:center;justify-content:center;font-weight:700}
.footer-banner{margin-top:16px;border-radius:20px;max-height:140px;object-fit:cover;width:100%}
.map-wrap{border-radius:18px;overflow:hidden}
.map-wrap iframe{width:100%;height:220px;border:none}
.clock-box{margin-top:16px;padding:14px;border-radius:16px;background:rgba(255,255,255,.08);display:flex;justify-content:space-between;align-items:center}
.footer-bottom{margin-top:20px;padding:20px 0;text-align:center;border-top:1px solid rgba(255,255,255,.12)}

.admin-layout{display:grid;grid-template-columns:250px 1fr;gap:24px}
.admin-sidebar{padding:18px;display:flex;flex-direction:column;gap:10px;height:max-content}
.admin-sidebar a{padding:13px 16px;border-radius:16px;transition:.24s ease}
.admin-sidebar a:hover{background:#eef2ff;color:var(--primary)}
.admin-sidebar a.active{background:#e6eeff;color:var(--primary);font-weight:700}
.admin-content{padding:24px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.admin-form label{display:block;font-size:14px;margin-bottom:8px}
.admin-form input,.admin-form select,.admin-form textarea{width:100%;padding:14px 16px;border:1px solid #d8e0ec;border-radius:16px;background:#fff}
.admin-form textarea{min-height:120px}
.checks{display:flex;gap:18px;flex-wrap:wrap;margin:16px 0}
.btn-primary{padding:12px 18px;border:none;border-radius:14px;background:var(--primary);color:#fff;cursor:pointer;font-weight:700}
.btn-danger{padding:10px 14px;border:none;border-radius:12px;background:#dc2626;color:#fff;cursor:pointer}
.btn-secondary{padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--text)}
.admin-table-wrap{overflow:auto}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th,.admin-table td{padding:12px;border-bottom:1px solid #eef2f7;text-align:left}
.admin-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{background:#fff;border-radius:22px;padding:20px;box-shadow:var(--shadow)}
.stat-card .num{font-size:30px;font-weight:700}

@media(max-width:1100px){
  .topbar{grid-template-columns:1fr}
  .main-grid,.footer-grid,.admin-layout,.grid2,.admin-cards{grid-template-columns:1fr}
  .genre-panel{position:static}
  .header-actions{flex-wrap:wrap}
}

.auth-modern{
  min-height:55vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:30px 0;
}
.auth-card{
  width:min(520px, 100%);
  background:#fff;
  border-radius:28px;
  box-shadow:0 18px 50px rgba(18,35,63,.12);
  padding:30px;
}
.auth-card h1{
  margin-top:0;
  margin-bottom:20px;
  font-size:42px;
  color:#17326f;
}
.guest-modal{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.45);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:9999;
}
.guest-modal.hidden{display:none}
.guest-modal-card{
  width:min(520px, 92%);
  background:#fff;
  border-radius:28px;
  padding:28px;
  box-shadow:0 20px 50px rgba(0,0,0,.2);
  position:relative;
}
.guest-close{
  position:absolute;
  top:14px;
  right:14px;
  width:40px;
  height:40px;
  border:none;
  border-radius:12px;
  background:#eef2f7;
  cursor:pointer;
  font-size:22px;
}
.guest-actions{
  display:flex;
  gap:12px;
  margin-top:18px;
  flex-wrap:wrap;
}
.auth-modern{
  min-height:55vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:30px 0;
}
.auth-card{
  width:min(520px, 100%);
  background:#fff;
  border-radius:28px;
  box-shadow:0 18px 50px rgba(18,35,63,.12);
  padding:30px;
}
.auth-card h1{
  margin-top:0;
  margin-bottom:20px;
  font-size:42px;
  color:#17326f;
}