*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0b0f1a;
  --surface:#141824;
  --surface2:#1c2233;
  --border:#252d42;
  --blue:#3b82f6;
  --blue-dark:#1d4ed8;
  --text:#f0f4ff;
  --muted:#8896b3;
  --r:12px;
}
html,body{
  height:100%;
  font-family:'Heebo',system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  direction:rtl;
}

/* NAV */
.nav{
  position:sticky;top:0;z-index:100;
  height:64px;padding:0 32px;
  background:rgba(11,15,26,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-icon{font-size:28px}
.brand-name{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.3px}
.brand-sub{font-size:11px;color:var(--muted);margin-top:1px}
.nav-user{
  font-size:13px;font-weight:500;color:var(--muted);
  background:var(--surface2);border:1px solid var(--border);
  padding:6px 16px;border-radius:20px;display:none;
}

/* PAGES */
.pg{display:none;min-height:calc(100vh - 64px)}
.pg.on{display:flex}

/* LOGIN */
#pgLogin{align-items:center;justify-content:center}
.login-box{
  background:var(--surface);border:1px solid var(--border);
  border-radius:20px;padding:48px 44px;width:420px;
  box-shadow:0 24px 64px rgba(0,0,0,.5);
}
.login-box h1{
  font-size:26px;font-weight:800;
  background:linear-gradient(135deg,#fff,#93c5fd);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  margin-bottom:6px;
}
.login-box p{color:var(--muted);font-size:14px;margin-bottom:36px}
.login-error{
  background:#3a1620;border:1px solid #5c2331;color:#f87171;
  border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:18px;
}
.lbl{display:block;font-size:12px;font-weight:600;color:var(--muted);
  margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}
.inp{
  width:100%;padding:13px 16px;background:var(--bg);
  border:1.5px solid var(--border);border-radius:10px;
  color:var(--text);font-size:15px;font-family:inherit;
  direction:ltr;text-align:left;outline:none;
  transition:border .2s,box-shadow .2s;margin-bottom:18px;
}
.inp:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,130,246,.2)}
.inp::placeholder{color:#3a4560}
.sep{height:1px;background:var(--border);margin:28px 0}
.btn-login{
  width:100%;padding:15px;
  background:linear-gradient(135deg,var(--blue-dark),var(--blue));
  color:#fff;border:none;border-radius:10px;
  font-size:15px;font-weight:700;font-family:inherit;cursor:pointer;
  letter-spacing:.2px;transition:opacity .2s,transform .1s;
  box-shadow:0 4px 20px rgba(59,130,246,.35);
}
.btn-login:hover{opacity:.9}
.btn-login:active{transform:scale(.98)}
.btn-login:disabled{opacity:.4;cursor:not-allowed}

/* SHELF */
#pgShelf{flex-direction:column;padding:36px 36px 48px}
.shelf-top{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:28px}
.shelf-title{font-size:24px;font-weight:800;color:#fff}
.shelf-sub{font-size:14px;color:var(--muted);margin-top:4px}
.btn-sm{
  background:var(--surface2);border:1px solid var(--border);
  color:var(--muted);border-radius:8px;padding:8px 18px;
  font-size:13px;font-family:inherit;cursor:pointer;
  transition:background .15s,color .15s;
}
.btn-sm:hover{background:var(--surface);color:var(--text)}

/* SEARCH */
.search-bar{
  margin-bottom:24px;
  display:flex;align-items:center;gap:12px;
}
.search-input-wrap{flex:1;position:relative}
.search-input-wrap input{
  width:100%;padding:11px 16px 11px 40px;
  background:var(--surface);border:1.5px solid var(--border);
  border-radius:10px;color:var(--text);font-size:14px;
  font-family:inherit;direction:rtl;outline:none;
  transition:border .2s;
}
.search-bar input:focus{border-color:var(--blue)}
.search-bar input::placeholder{color:var(--muted)}
.search-icon{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  color:var(--muted);font-size:16px;pointer-events:none;
}
.sort-select{
  padding:11px 14px;background:var(--surface);
  border:1.5px solid var(--border);border-radius:10px;
  color:var(--text);font-size:14px;font-family:inherit;
  direction:rtl;outline:none;cursor:pointer;
  transition:border .2s;flex-shrink:0;
}
.sort-select:focus{border-color:var(--blue)}

/* GRID */
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(165px,1fr));
  gap:20px;
}
.book{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);overflow:hidden;cursor:pointer;
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.book:hover{
  transform:translateY(-6px);
  box-shadow:0 20px 48px rgba(0,0,0,.5);
  border-color:#3b5280;
}
.cover{width:100%;aspect-ratio:2/3;object-fit:cover;display:block}
.cover-ph{
  width:100%;aspect-ratio:2/3;
  background:linear-gradient(155deg,#0f2462 0%,#1e40af 50%,#3b82f6 100%);
  display:flex;align-items:center;justify-content:center;font-size:56px;
}
.book-info{padding:12px 13px 14px}
.book-title{
  font-size:13px;font-weight:700;line-height:1.45;color:var(--text);
  margin-bottom:4px;
  display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
}
.book-author{
  font-size:11px;color:var(--muted);margin-bottom:12px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.btn-read{
  width:100%;padding:9px 0;background:var(--blue-dark);
  color:#fff;border:none;border-radius:8px;
  font-size:12px;font-weight:600;font-family:inherit;cursor:pointer;
  transition:background .15s;letter-spacing:.3px;
}
.btn-read:hover{background:var(--blue)}
.btn-read:disabled{opacity:.4;cursor:not-allowed}

/* LOADING */
.loading-state{
  display:flex;flex-direction:column;align-items:center;
  justify-content:center;padding:100px;gap:20px;color:var(--muted);flex:1;
}
.spin{
  width:44px;height:44px;border:3px solid var(--border);
  border-top-color:var(--blue);border-radius:50%;
  animation:spin .75s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-state p{font-size:15px}

.nav-logout{display:flex;align-items:center;gap:10px}
.nav-identity{font-size:12px;color:var(--muted);direction:ltr}

/* NAV TABS */
.nav-tabs{display:flex;gap:8px}
.tab-btn{
  background:transparent;border:1px solid var(--border);color:var(--muted);
  padding:8px 20px;border-radius:8px;font-size:13px;font-weight:600;
  font-family:inherit;cursor:pointer;transition:all .15s;
}
.tab-btn:hover{color:var(--text);border-color:#3b5280}
.tab-btn.on{background:var(--blue-dark);color:#fff;border-color:var(--blue)}

/* ACCOUNTS PAGE */
#pgAccounts{padding:36px;justify-content:center}
.accounts-wrap{display:flex;gap:28px;max-width:1000px;width:100%;align-items:flex-start}
.add-account-box,.accounts-list-box{
  background:var(--surface);border:1px solid var(--border);
  border-radius:16px;padding:32px;flex:1;
}
.add-account-box h2,.accounts-list-box h2{font-size:18px;font-weight:800;color:#fff;margin-bottom:8px}
.muted{color:var(--muted);font-size:13px;margin-bottom:20px}
.alb-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px}
.alb-top h2{margin-bottom:0}
.accounts-list{display:flex;flex-direction:column;gap:10px;max-height:420px;overflow-y:auto}
.account-row{
  display:flex;justify-content:space-between;align-items:center;
  background:var(--surface2);border:1px solid var(--border);
  border-radius:10px;padding:12px 16px;
}
.account-label{font-size:14px;font-weight:700;color:var(--text)}
.account-email{font-size:12px;color:var(--muted);direction:ltr;text-align:right}
.btn-del{
  background:transparent;border:1px solid #5c2331;color:#f87171;
  padding:6px 14px;border-radius:8px;font-size:12px;font-family:inherit;
  cursor:pointer;transition:background .15s;
}
.btn-del:hover{background:#3a1620}

/* SHELF ACTIONS */
.shelf-actions{display:flex;gap:10px}
#btnDownloadSel:disabled{opacity:.35;cursor:not-allowed}

/* BOOK CARD EXTRAS */
.book{position:relative}
.book-checkbox{
  position:absolute;top:8px;right:8px;z-index:2;
  background:rgba(11,15,26,.7);border-radius:6px;padding:3px;
}
.book-checkbox input{width:18px;height:18px;cursor:pointer}
.account-badge{
  position:absolute;top:8px;left:8px;z-index:2;
  background:rgba(59,130,246,.85);color:#fff;font-size:10px;font-weight:700;
  padding:3px 9px;border-radius:6px;max-width:90px;overflow:hidden;
  white-space:nowrap;text-overflow:ellipsis;
}
.book-status{font-size:11px;color:var(--muted);margin-bottom:8px;min-height:14px}
.book-status a{color:#4ade80;text-decoration:none;font-weight:600}
.book-btns{display:flex;gap:6px}
.book-btns .btn-read{flex:1}
.btn-dl{
  background:var(--surface2);border:1px solid var(--border);color:var(--text);
  border-radius:8px;padding:9px 13px;font-size:13px;cursor:pointer;
  transition:background .15s;
}
.btn-dl:hover{background:var(--blue-dark)}

/* LOGIN LOG TABLE */
.logins-table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.logins-table th{
  background:var(--surface2);color:var(--muted);font-size:12px;font-weight:700;
  text-align:right;padding:12px 16px;border-bottom:1px solid var(--border);
}
.logins-table td{padding:11px 16px;font-size:13px;border-bottom:1px solid var(--border);color:var(--text)}
.logins-table tr:last-child td{border-bottom:none}
.logins-table .ltr-cell{direction:ltr;text-align:right}

/* TOAST */
.toast{
  position:fixed;bottom:28px;left:50%;
  transform:translateX(-50%) translateY(100px);
  padding:13px 28px;border-radius:10px;
  font-size:14px;font-weight:500;color:#fff;white-space:nowrap;
  background:#1e2d4a;border:1px solid #2d4070;
  box-shadow:0 8px 32px rgba(0,0,0,.5);
  transition:transform .35s cubic-bezier(.34,1.56,.64,1);
  z-index:9999;pointer-events:none;
}
.toast.show{transform:translateX(-50%) translateY(0)}
.toast.ok{background:#14532d;border-color:#166534}
.toast.err{background:#7f1d1d;border-color:#991b1b}

/* BOOK MODAL */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:1000;
  background:rgba(5,8,16,.75);backdrop-filter:blur(4px);
  align-items:center;justify-content:center;padding:24px;
}
.modal-overlay.on{display:flex}
.modal-box{
  background:var(--surface);border:1px solid var(--border);
  border-radius:18px;max-width:680px;width:100%;
  max-height:85vh;overflow-y:auto;position:relative;
  box-shadow:0 24px 64px rgba(0,0,0,.6);
}
.modal-close{
  position:absolute;top:14px;left:14px;z-index:2;
  width:32px;height:32px;border-radius:8px;
  background:var(--surface2);border:1px solid var(--border);
  color:var(--text);font-size:15px;cursor:pointer;
}
.modal-close:hover{background:var(--blue-dark)}
.modal-body{display:flex;gap:24px;padding:32px}
.modal-cover{
  width:200px;flex-shrink:0;border-radius:10px;
  box-shadow:0 12px 32px rgba(0,0,0,.45);object-fit:cover;
}
.modal-info{flex:1;min-width:0}
.modal-title{font-size:22px;font-weight:800;color:#fff;margin-bottom:6px}
.modal-author{font-size:14px;color:var(--muted);margin-bottom:14px}
.modal-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.modal-tag{
  background:var(--surface2);border:1px solid var(--border);
  color:var(--text);font-size:12px;padding:4px 12px;border-radius:14px;
}
.modal-desc{font-size:14px;line-height:1.7;color:var(--text);white-space:pre-wrap}
@media (max-width:560px){
  .modal-body{flex-direction:column;align-items:center}
  .modal-cover{width:160px}
}

.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ── MOBILE ────────────────────────────────────────────────────────── */
@media (max-width:768px){
  .nav{
    height:auto;flex-wrap:wrap;gap:10px;
    padding:12px 16px;position:static;
  }
  .brand-sub{display:none}
  .nav-tabs{order:3;width:100%;justify-content:center;flex-wrap:wrap}
  .nav-logout{order:2;margin-inline-start:auto}
  .nav-identity{display:none}

  #pgShelf,#pgAccounts,#pgLogins{padding:18px 14px 32px}
  .shelf-top{flex-direction:column;align-items:flex-start;gap:14px}
  .shelf-actions{flex-wrap:wrap;width:100%}
  .shelf-actions .btn-sm{flex:1;min-width:0;white-space:nowrap}

  .search-bar{flex-wrap:wrap}
  .search-input-wrap{flex:1 1 100%}
  .sort-select{flex:1 1 auto}

  .grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}
  .book-title{font-size:12px}
  .book-author{font-size:10px}

  .login-box{width:100%;padding:36px 26px;border-radius:14px}

  .accounts-wrap{flex-direction:column}
  .add-account-box,.accounts-list-box{padding:22px}

  .modal-box{max-height:92vh}
  .modal-body{padding:20px}

  .logins-table th,.logins-table td{padding:9px 10px;font-size:12px;white-space:nowrap}
}

@media (max-width:420px){
  .grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:10px}
  .brand-name{font-size:16px}
  .brand-icon{font-size:22px}
  .tab-btn{padding:7px 12px;font-size:12px}
}