:root{
  --bg:#05101c;
  --card:rgba(8,25,42,.72);
  --text:#eaf3ff;
  --muted:#9bb0c7;
  --primary:#38bdf8;
  --primary-2:#2563eb;
  --accent:#7dd3fc;
  --danger:#fb7185;
  --warning:#fbbf24;
  --success:#34d399;
  --border:rgba(56,189,248,.16);
  --border-strong:rgba(125,211,252,.28);
  --shadow:0 18px 50px rgba(0,0,0,.38);
  --glass:blur(16px);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}

body.deep-blue-theme{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text);
  line-height:1.55;
  min-height:100vh;
  overflow-x:hidden;
  background:
    radial-gradient(circle at 12% 10%, rgba(37,99,235,.22), transparent 28%),
    radial-gradient(circle at 88% 8%, rgba(56,189,248,.18), transparent 24%),
    radial-gradient(circle at 50% 100%, rgba(14,165,233,.12), transparent 34%),
    linear-gradient(180deg,#030712 0%,#071a2b 45%,#05101c 100%);
  background-attachment:fixed;
}

a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}

/* NAVBAR */
.navbar{
  position:sticky;top:0;z-index:80;overflow:hidden;
  background:linear-gradient(135deg,rgba(3,10,18,.96) 0%,rgba(11,47,85,.92) 42%,rgba(5,18,32,.96) 100%);
  border-bottom:1px solid var(--border-strong);
  box-shadow:0 14px 38px rgba(0,0,0,.38);
  backdrop-filter:var(--glass);-webkit-backdrop-filter:var(--glass);
}
#navbarParticles{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:.58;mix-blend-mode:screen}
.nav-inner{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.navbar-brand{display:flex;align-items:center;gap:12px;font-weight:850;color:#fff;letter-spacing:-.25px;text-shadow:0 0 18px rgba(56,189,248,.18)}
.navbar-brand:hover{text-decoration:none;color:#fff}
.brand-logo{height:42px;width:auto;object-fit:contain;background:transparent;filter:drop-shadow(0 0 12px rgba(56,189,248,.28))}
.nav-links{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.nav-links a{color:#cbe7ff;font-size:14px;font-weight:700;padding:8px 10px;border-radius:10px;border:1px solid transparent;transition:.22s ease}
.nav-links a:hover{background:rgba(56,189,248,.14);border-color:rgba(56,189,248,.18);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,0,0,.18)}
.nav-links a.active{background:linear-gradient(135deg,rgba(56,189,248,.24),rgba(37,99,235,.24));border-color:rgba(125,211,252,.24);color:#fff}

/* CONTAINER */
.container{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:24px 16px 40px}

/* HERO */
.hero{position:relative;overflow:hidden;border-radius:24px;padding:38px 28px;text-align:center;background:radial-gradient(circle at 16% 18%,rgba(56,189,248,.18),transparent 28%),radial-gradient(circle at 84% 12%,rgba(37,99,235,.22),transparent 26%),linear-gradient(135deg,rgba(3,10,18,.88),rgba(8,32,56,.78) 48%,rgba(3,10,18,.9));border:1px solid var(--border-strong);box-shadow:var(--shadow);margin-bottom:24px}
.hero::before{content:"";position:absolute;inset:-40% 20% auto -10%;height:220px;background:linear-gradient(120deg,transparent,rgba(125,211,252,.10),transparent);transform:rotate(-8deg);pointer-events:none}
.hero h1{position:relative;z-index:1;margin:0 0 10px;font-size:clamp(28px,4.2vw,48px);line-height:1.08;letter-spacing:-1.2px;background:linear-gradient(135deg,#fff 0%,#7dd3fc 48%,#38bdf8 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{position:relative;z-index:1;margin:0 auto;max-width:760px;color:#b9d7ef;font-size:15px}

/* SEARCH */
.search-box{position:relative;z-index:1;display:flex;gap:10px;max-width:780px;margin:22px auto 0;background:rgba(2,8,15,.58);padding:10px;border-radius:18px;border:1px solid var(--border-strong);box-shadow:0 10px 30px rgba(0,0,0,.24);backdrop-filter:var(--glass)}
.search-box input{flex:1;border:0;outline:none;font-size:15px;padding:10px 8px;background:transparent;color:var(--text)}
.search-box input::placeholder{color:#7f96ad}

/* CHIPS */
.chips{position:relative;z-index:1;display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:18px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;background:rgba(2,8,15,.48);border:1px solid var(--border);color:#cbe7ff;font-size:13px;font-weight:700;transition:.22s ease}
.chip:hover{text-decoration:none;transform:translateY(-2px) scale(1.02);border-color:rgba(125,211,252,.34);background:linear-gradient(135deg,rgba(56,189,248,.22),rgba(37,99,235,.22));color:#fff;box-shadow:0 10px 24px rgba(0,0,0,.22)}
.chip.active{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;border-color:transparent}

/* =========================================================
   FLOATING QR (kiri atas, kecil, bisa minimize)
   + EFEK GLOW MENYEBAR TIAP 10 DETIK
   ========================================================= */
.visit-float{position:fixed;left:14px;top:78px;z-index:70;display:flex;flex-direction:column;align-items:flex-start;gap:8px;overflow:visible}

.visit-float-toggle{
  position:relative;
  overflow:visible;            /* penting: supaya ripple glow bisa keluar */
  display:inline-flex;align-items:center;gap:8px;height:46px;min-width:46px;padding:0 12px;border-radius:999px;
  border:1px solid var(--border-strong);
  background:linear-gradient(135deg,rgba(56,189,248,.92),rgba(37,99,235,.92));
  color:#fff;font-weight:800;font-size:13px;cursor:pointer;
  box-shadow:0 12px 28px rgba(0,0,0,.34);
  backdrop-filter:var(--glass);
  transition:transform .2s ease,box-shadow .2s ease;
  animation:qrGlow 10s ease-in-out infinite;   /* denyut cahaya tiap 10 detik */
}
.visit-float-toggle:hover{transform:translateY(-1px);box-shadow:0 16px 34px rgba(56,189,248,.32)}
.visit-float-toggle svg{flex:0 0 auto;position:relative;z-index:2}
.visit-float-toggle-label{position:relative;z-index:2}

/* cincin ripple yang menyebar keluar */
.visit-float-toggle::before,
.visit-float-toggle::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:999px;
  border:2px solid rgba(125,211,252,.85);
  opacity:0;
  pointer-events:none;
  z-index:1;
  animation:qrRipple 10s ease-out infinite;
}
.visit-float-toggle::after{animation-delay:.45s;border-color:rgba(56,189,248,.7)}

.visit-float-panel{width:196px;background:linear-gradient(160deg,rgba(8,25,42,.97),rgba(5,16,28,.97));border:1px solid var(--border-strong);border-radius:16px;box-shadow:0 22px 50px rgba(0,0,0,.5);overflow:hidden;animation:popIn .25s cubic-bezier(.22,1,.36,1)}
.visit-float-head{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;background:rgba(56,189,248,.10);border-bottom:1px solid var(--border)}
.visit-float-head strong{font-size:13px;color:#fff}
.visit-float-min{width:26px;height:26px;border-radius:8px;border:1px solid var(--border);background:rgba(255,255,255,.06);color:#cbe7ff;font-size:16px;line-height:1;cursor:pointer;display:grid;place-items:center;transition:.2s ease}
.visit-float-min:hover{background:rgba(56,189,248,.18);color:#fff}
.visit-float-body{padding:12px;text-align:center}
.visit-float-body img{display:block;margin:0 auto;border-radius:10px;background:#fff;padding:5px;width:140px;height:140px}
.visit-float-body p{margin:8px 0 10px;font-size:11.5px;line-height:1.4;color:var(--muted)}
.btn-block{width:100%}
.visit-float.minimized .visit-float-panel{display:none}
.visit-float.minimized .visit-float-toggle{padding:0;width:46px;justify-content:center}
.visit-float.minimized .visit-float-toggle-label{display:none}

/* denyut glow: menyala singkat di awal siklus 10 detik, lalu padam */
@keyframes qrGlow{
  0%,3%   {box-shadow:0 12px 28px rgba(0,0,0,.34);}
  7%      {box-shadow:0 0 0 3px rgba(56,189,248,.40), 0 0 18px 4px rgba(56,189,248,.55), 0 12px 28px rgba(0,0,0,.34);}
  12%     {box-shadow:0 0 0 7px rgba(56,189,248,.22), 0 0 30px 11px rgba(125,211,252,.50), 0 12px 28px rgba(0,0,0,.34);}
  18%     {box-shadow:0 0 0 10px rgba(56,189,248,.10), 0 0 38px 16px rgba(56,189,248,.30), 0 12px 28px rgba(0,0,0,.34);}
  24%,100%{box-shadow:0 12px 28px rgba(0,0,0,.34);}
}

/* ripple menyebar: membesar + memudar */
@keyframes qrRipple{
  0%   {transform:scale(1);opacity:0;}
  4%   {opacity:.9;}
  20%  {transform:scale(2.3);opacity:0;}
  100% {transform:scale(2.3);opacity:0;}
}

@keyframes popIn{from{transform:translateY(-8px) scale(.96);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}

/* GRID */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px}

/* BOOK CARD */
.book-card{position:relative;background:var(--card);border:1px solid var(--border);border-radius:22px;overflow:hidden;display:flex;flex-direction:column;backdrop-filter:var(--glass);box-shadow:0 10px 28px rgba(0,0,0,.22);transition:transform .32s cubic-bezier(.22,1,.36,1),box-shadow .32s cubic-bezier(.22,1,.36,1),border-color .32s ease}
.book-card:hover{transform:translateY(-10px) scale(1.018);box-shadow:0 28px 58px rgba(0,0,0,.42),0 0 0 1px rgba(56,189,248,.16);border-color:rgba(125,211,252,.34)}
.cover-wrap{position:relative;aspect-ratio:3/4;overflow:hidden;background:linear-gradient(145deg,rgba(3,10,18,.92),rgba(11,47,85,.68))}
.cover-wrap img,.cover-wrap .cover-placeholder{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,1,.36,1),filter .35s ease}
.book-card:hover .cover-wrap img{transform:scale(1.08);filter:saturate(1.08) brightness(1.03)}
.cover-placeholder{display:grid;place-items:center;color:#8faec7;font-size:13px;font-weight:700;text-align:center;padding:12px}
.bidang-badge{position:absolute;top:10px;left:10px;z-index:2;background:rgba(2,8,15,.74);color:#dff6ff;border:1px solid rgba(125,211,252,.20);border-radius:999px;padding:5px 10px;font-size:11px;font-weight:800;backdrop-filter:var(--glass);box-shadow:0 8px 18px rgba(0,0,0,.22)}
.book-body{padding:14px;display:flex;flex-direction:column;gap:8px;flex:1}
.book-body h3{margin:0;font-size:16px;line-height:1.35;min-height:44px}
.book-body h3 a{color:var(--text)}
.book-body h3 a:hover{color:var(--accent);text-decoration:none}
.meta{margin:0;color:var(--muted);font-size:13px}
.stock{margin:0;font-size:13px;font-weight:800;color:var(--primary)}

/* HOVER PREVIEW */
.hover-preview{position:absolute;inset:0;z-index:3;display:flex;flex-direction:column;justify-content:flex-end;padding:18px;background:linear-gradient(0deg,rgba(2,8,15,.96) 0%,rgba(2,8,15,.82) 38%,rgba(2,8,15,.36) 68%,transparent 100%);opacity:0;transform:translateY(12px);transition:opacity .35s ease,transform .35s cubic-bezier(.22,1,.36,1);pointer-events:none}
.book-card:hover .hover-preview{opacity:1;transform:translateY(0);pointer-events:auto}
.hover-preview h4{color:#fff;font-size:15px;font-weight:850;margin:0 0 6px;line-height:1.3}
.hover-preview p{color:rgba(226,242,255,.84);font-size:13px;line-height:1.5;margin:0 0 12px}
.hover-preview .btn.light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#fff;backdrop-filter:var(--glass)}
.hover-preview .btn.light:hover{background:#fff;color:#071a2b}

/* BUTTONS */
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 14px;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,.06);color:var(--text);font-weight:750;font-size:14px;cursor:pointer;transition:.2s ease;backdrop-filter:var(--glass)}
.btn:hover{text-decoration:none;transform:translateY(-1px);background:rgba(56,189,248,.14);border-color:rgba(125,211,252,.26);box-shadow:0 10px 24px rgba(0,0,0,.20)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));border-color:transparent;color:#fff}
.btn-primary:hover{background:linear-gradient(135deg,#7dd3fc,#38bdf8);box-shadow:0 14px 30px rgba(56,189,248,.24)}
.btn-danger{background:rgba(244,63,94,.16);border-color:rgba(251,113,133,.28);color:#fda4af}
.btn-danger:hover{background:rgba(244,63,94,.24)}
.btn-small{padding:6px 10px;font-size:13px;border-radius:10px}
.btn-back{display:inline-flex;margin-bottom:12px}

/* PANEL */
.panel{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:22px;margin:18px 0;box-shadow:0 10px 30px rgba(0,0,0,.20);backdrop-filter:var(--glass)}
.narrow{max-width:760px;margin-left:auto;margin-right:auto}

/* TABLE */
.table-wrap{overflow:auto;background:rgba(2,8,15,.48);border:1px solid var(--border);border-radius:16px;backdrop-filter:var(--glass)}
table{width:100%;border-collapse:collapse;min-width:760px}
th,td{padding:10px 12px;border-bottom:1px solid rgba(56,189,248,.12);vertical-align:top;font-size:14px}
th{background:rgba(255,255,255,.05);text-align:left;white-space:nowrap;font-weight:850;color:#dbeafe}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:rgba(56,189,248,.06)}

/* TEXT / FORM */
.muted{color:var(--muted)}
.flex-between{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
label{display:block;font-size:14px;margin-bottom:5px;font-weight:800;color:#dbeafe}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:12px;font:inherit;background:rgba(2,8,15,.58);color:var(--text);outline:none;transition:.2s ease}
input::placeholder,textarea::placeholder{color:#7f96ad}
input:focus,select:focus,textarea:focus{border-color:rgba(56,189,248,.55);box-shadow:0 0 0 3px rgba(56,189,248,.14)}
textarea{min-height:110px;resize:vertical}

/* FLASH / ALERT */
.flash{padding:12px 14px;border-radius:14px;margin:12px 0;border:1px solid;font-weight:750;backdrop-filter:var(--glass)}
.flash-success{background:rgba(16,185,129,.14);border-color:rgba(52,211,153,.30);color:#a7f3d0}
.flash-error{background:rgba(244,63,94,.14);border-color:rgba(251,113,133,.30);color:#fecdd3}
.flash-info{background:rgba(37,99,235,.16);border-color:rgba(96,165,250,.30);color:#dbeafe}
.alert{padding:12px 14px;border-radius:14px;margin:10px 0;border:1px solid;backdrop-filter:var(--glass)}
.alert-info{background:rgba(37,99,235,.16);border-color:rgba(96,165,250,.30);color:#dbeafe}
.alert-success{background:rgba(16,185,129,.14);border-color:rgba(52,211,153,.30);color:#a7f3d0}
.alert-warning{background:rgba(245,158,11,.14);border-color:rgba(251,191,36,.30);color:#fde68a}
.alert-danger{background:rgba(244,63,94,.16);border-color:rgba(251,113,133,.30);color:#fecdd3}

/* BADGE */
.badge{display:inline-block;padding:4px 9px;border-radius:999px;font-size:12px;font-weight:850;border:1px solid;white-space:nowrap}
.badge-active{background:rgba(16,185,129,.16);color:#86efac;border-color:rgba(34,197,94,.34)}
.badge-overdue{background:rgba(244,63,94,.16);color:#fda4af;border-color:rgba(251,113,133,.34)}
.badge-returned{background:rgba(148,163,184,.16);color:#cbd5e1;border-color:rgba(148,163,184,.28)}

/* DETAIL */
.detail{display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:start}
.detail-cover{border-radius:20px;overflow:hidden;border:1px solid var(--border-strong);background:rgba(2,8,15,.58);box-shadow:var(--shadow)}
.detail-cover img,.detail-cover .cover-placeholder{width:100%;aspect-ratio:3/4;object-fit:contain;background:linear-gradient(145deg,rgba(3,10,18,.95),rgba(11,47,85,.65))}
.info-list{display:grid;gap:8px;margin:14px 0}
.info-list div{display:grid;grid-template-columns:170px 1fr;gap:10px;padding:8px 0;border-bottom:1px dashed rgba(56,189,248,.16)}
.info-list strong{color:#cbe7ff}

/* PAGINATION */
.pagination{display:flex;gap:6px;justify-content:center;align-items:center;flex-wrap:wrap;margin:20px 0 0}
.pagination a,.pagination span{min-width:40px;text-align:center;padding:9px 12px;border-radius:12px;border:1px solid var(--border);background:rgba(2,8,15,.52);color:#dbeafe;font-weight:850;font-size:14px;transition:.2s ease;backdrop-filter:var(--glass)}
.pagination a:hover{text-decoration:none;transform:translateY(-1px);border-color:rgba(125,211,252,.30);background:rgba(56,189,248,.14);box-shadow:0 10px 24px rgba(0,0,0,.20)}
.pagination .active{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;border-color:transparent}
.pagination .disabled{opacity:.42;cursor:not-allowed}

/* VISIT MODAL */
.visit-modal-backdrop{position:fixed;inset:0;z-index:9000;display:flex;align-items:center;justify-content:center;padding:18px;background:rgba(2,6,12,.72);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);animation:fadeIn .25s ease}
.visit-modal{width:min(440px,100%);background:radial-gradient(circle at 50% 0%,rgba(56,189,248,.16),transparent 40%),linear-gradient(160deg,rgba(8,25,42,.98),rgba(5,16,28,.98));border:1px solid var(--border-strong);border-radius:22px;padding:26px 22px;box-shadow:0 30px 70px rgba(0,0,0,.55);text-align:center;animation:popIn2 .3s cubic-bezier(.22,1,.36,1)}
.visit-modal-icon{width:64px;height:64px;margin:0 auto 12px;border-radius:50%;display:grid;place-items:center;font-size:30px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-2));box-shadow:0 12px 28px rgba(56,189,248,.32)}
.visit-modal h2{margin:0 0 6px;font-size:22px;background:linear-gradient(135deg,#fff,#7dd3fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.visit-modal p{margin:0 0 16px;color:#b9d7ef;font-size:14px}
.visit-modal form{text-align:left}
.visit-modal .actions{justify-content:flex-end;margin-top:8px}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes popIn2{from{transform:translateY(18px) scale(.96);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}

/* FLOATING NOTICE (kanan bawah) */
.floating-notice{position:fixed;right:16px;bottom:16px;z-index:9999;width:min(360px,calc(100% - 24px));background:rgba(8,25,42,.94);border:1px solid rgba(251,191,36,.34);border-left:5px solid var(--warning);border-radius:16px;box-shadow:0 20px 48px rgba(0,0,0,.42);padding:14px;display:flex;gap:10px;align-items:flex-start;animation:slideIn .28s ease;backdrop-filter:var(--glass);color:var(--text)}
.floating-danger{border-color:rgba(251,113,133,.36);border-left-color:var(--danger)}
.floating-body strong{display:block;font-size:14px;color:#fff}
.floating-body p{margin:6px 0 0;font-size:14px;color:#cbe7ff}
.floating-actions{margin-top:10px}
.floating-close{border:0;background:transparent;font-size:22px;line-height:1;cursor:pointer;color:#9bb0c7;padding:0}
.floating-close:hover{color:#fff}
@keyframes slideIn{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}

/* FOOTER */
.site-footer{position:relative;z-index:1;border-top:1px solid var(--border);background:rgba(2,8,15,.72);padding:10px 16px;text-align:center;font-size:12px;color:var(--muted);backdrop-filter:var(--glass)}

/* RESPONSIVE */
@media(max-width:850px){
  .detail{grid-template-columns:1fr}
  .detail-cover{max-width:280px;margin:0 auto}
}
@media(max-width:640px){
  .nav-inner{padding:10px 12px}
  .nav-links{width:100%;justify-content:flex-start}
  .brand-logo{height:34px}
  .navbar-brand span{font-size:14px;line-height:1.2}
  .hero{padding:24px 16px;border-radius:18px}
  .search-box{flex-direction:column;border-radius:16px}
  .search-box input{padding:10px}
  .grid{grid-template-columns:1fr}
  .info-list div{grid-template-columns:1fr;gap:2px}
  .pagination a,.pagination span{min-width:38px;padding:8px 10px;font-size:13px}
  .floating-notice{right:10px;left:10px;bottom:10px;width:auto}
  .visit-modal{padding:22px 16px}
  .visit-float{left:10px}
  .visit-float-panel{width:176px}
  .visit-float-body img{width:128px;height:128px}
}

/* AKSESIBILITAS: matikan glow bagi yang sensitif gerakan */
@media(prefers-reduced-motion:reduce){
  .visit-float-toggle,
  .visit-float-toggle::before,
  .visit-float-toggle::after{animation:none}
  .visit-float-toggle::before,
  .visit-float-toggle::after{opacity:0}
}