:root{--navy:#0b2341;--navy2:#143d68;--gold:#d3a94b;--bg:#f5f7fa;--text:#182434;--muted:#687386;--border:#dfe5ec;--white:#fff;--green:#147a55;--red:#b42318;--shadow:0 12px 35px rgba(10,35,65,.08)}*{box-sizing:border-box}html{font-family:Arial,Helvetica,sans-serif;color:var(--text);background:var(--bg)}body{margin:0;line-height:1.55}a{color:var(--navy2);text-decoration:none}a:hover{text-decoration:underline}.container,.page-container{width:min(1180px,calc(100% - 36px));margin:auto}.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;align-items:center;gap:12px;color:var(--navy);text-decoration:none}.brand-mark{width:42px;height:42px;border-radius:10px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;font-size:22px}.brand strong,.brand small{display:block}.brand small{font-size:11px;color:var(--muted);letter-spacing:.08em}.main-nav{display:flex;align-items:center;gap:22px}.main-nav a{color:var(--text);font-weight:600;font-size:14px}.inline{display:inline}.link-button{border:0;background:none;font:inherit;color:var(--text);cursor:pointer;font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--navy);color:#fff;border:0;border-radius:8px;padding:11px 18px;font-weight:700;cursor:pointer}.btn:hover{text-decoration:none;background:var(--navy2)}.btn-sm{padding:7px 11px;font-size:12px}.btn-light{background:#eef2f6;color:var(--navy)}.wide{width:100%}.hero{background:linear-gradient(135deg,#071a30,#123d69);color:#fff;padding:84px 0}.hero-grid{display:grid;grid-template-columns:1.55fr .75fr;gap:70px;align-items:center}.hero h1,.page-hero h1{font-size:clamp(36px,5vw,60px);line-height:1.06;margin:.2em 0}.hero p{color:#d7e1eb;font-size:18px;max-width:700px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.15em;color:var(--gold)}.search-box{display:flex;background:#fff;border-radius:12px;padding:7px;margin-top:28px;max-width:760px}.search-box input{flex:1;border:0;padding:12px;font-size:16px;outline:none}.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.13);border-radius:18px;padding:26px}.hero-stat{padding:18px;border-bottom:1px solid rgba(255,255,255,.12)}.hero-stat:last-child{border:0}.hero-stat b{display:block;font-size:34px}.hero-stat span{color:#bdcada}.section{padding:58px 0}.section-head,.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:24px}.section-head h2,.page-head h1{margin:.2em 0}.book-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.book-card{display:block;background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:0 2px 9px rgba(0,0,0,.03);color:var(--text);transition:.2s}.book-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);text-decoration:none}.book-card img,.cover-placeholder{width:100%;aspect-ratio:3/4;object-fit:cover;background:linear-gradient(135deg,#dbe4ee,#aab9cb);display:grid;place-items:center}.cover-placeholder span{font-size:72px;font-weight:800;color:rgba(11,35,65,.35)}.book-body{padding:16px}.book-body small{color:var(--muted)}.book-body h3{font-size:16px;line-height:1.35;margin:7px 0}.book-body p{font-size:13px;color:var(--muted);min-height:38px}.availability,.status{display:inline-block;border-radius:999px;padding:4px 9px;font-size:11px;font-weight:800;text-transform:uppercase}.availability.ok,.status.available,.status.active,.status.open,.status.paid,.status.ready{background:#e4f5ed;color:var(--green)}.availability.no,.status.lost,.status.damaged,.status.suspended,.status.unpaid{background:#fee8e6;color:var(--red)}.status.borrowed,.status.queued,.status.partial,.status.reference,.status.repair{background:#fff1cc;color:#8a5d00}.status.closed,.status.inactive,.status.fulfilled,.status.cancelled,.status.expired{background:#e9edf2;color:#566273}.page-hero{background:#eaf0f6;padding:42px 0}.page-hero h1{font-size:40px}.catalog-filter,.toolbar{display:flex;gap:10px;align-items:end;flex-wrap:wrap}.catalog-filter input{min-width:360px}.catalog-filter input,.catalog-filter select,.toolbar input,.toolbar select,input,select,textarea{border:1px solid #cfd7e1;border-radius:7px;background:#fff;padding:10px 11px;font:inherit;width:100%}.catalog-filter input,.catalog-filter select,.toolbar input,.toolbar select{width:auto}.catalog-filter select{min-width:200px}.muted{color:var(--muted)}.book-detail{display:grid;grid-template-columns:260px 1fr;gap:48px}.detail-cover{width:100%;border-radius:10px;box-shadow:var(--shadow);aspect-ratio:3/4;object-fit:cover}.subtitle{font-weight:400;color:var(--muted)}.lead{font-size:18px}.metadata{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:25px 0}.metadata div{background:#fff;border:1px solid var(--border);border-radius:8px;padding:13px}.metadata span,.metadata b{display:block}.metadata span{font-size:11px;color:var(--muted);text-transform:uppercase}.metadata.compact{grid-template-columns:repeat(3,1fr)}.prose{max-width:800px}.back{font-size:13px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:12px 13px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}th{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:#f8fafc}td small{display:block;color:var(--muted)}footer{background:#0b2038;color:#dce4ed;margin-top:40px;padding:35px 0}.footer-grid{display:flex;justify-content:space-between}.login-section{min-height:68vh;display:grid;place-items:center;padding:50px 20px}.login-card{width:min(440px,100%);background:#fff;border:1px solid var(--border);border-radius:14px;padding:34px;box-shadow:var(--shadow)}.login-card h1{margin:.2em 0}.stack-form{display:grid;gap:16px}.stack-form label,.form-grid label{font-size:13px;font-weight:700}.stack-form label input,.stack-form label select,.stack-form label textarea,.form-grid label input,.form-grid label select,.form-grid label textarea{margin-top:6px}.check{display:flex;align-items:center;gap:8px}.check input{width:auto!important}.admin-shell{display:grid;grid-template-columns:230px 1fr;min-height:calc(100vh - 76px)}.sidebar{background:#0e2949;padding:25px 14px;color:#dbe6f1}.sidebar a{display:block;color:#dbe6f1;padding:10px 12px;border-radius:7px;font-size:14px}.sidebar a:hover{background:#173b63;text-decoration:none}.sidebar-title{font-size:10px;letter-spacing:.12em;color:#8ea8c2;padding:19px 12px 7px}.admin-main{min-width:0;padding:34px 0 60px}.panel{background:#fff;border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:22px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0 28px}.stat-card{background:#fff;border:1px solid var(--border);border-radius:10px;padding:18px}.stat-card span{display:block;color:var(--muted);font-size:12px}.stat-card strong{font-size:27px;color:var(--navy)}.panel-head{display:flex;justify-content:space-between}.danger-text{color:var(--red);font-weight:700}.actions{white-space:nowrap}.actions a{margin-right:10px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.span-2{grid-column:span 2}.form-actions{display:flex;gap:15px;align-items:center}.two-col{display:grid;grid-template-columns:340px 1fr;gap:20px}.narrow{max-width:680px}.inline-form,.form-row{display:flex;gap:8px;align-items:center}.inline-form input,.inline-form select{width:auto;min-width:110px}.alert{width:min(1180px,calc(100% - 36px));margin:15px auto;border-radius:8px;padding:12px 14px}.admin-main .alert{width:100%}.alert.success{background:#e6f5ee;color:#116443}.alert.error{background:#feeceb;color:#8f1f17}.pagination{display:flex;gap:5px;list-style:none;padding:0}.pagination a,.pagination span{display:block;padding:7px 10px;background:#fff;border:1px solid var(--border);border-radius:5px}code{font-size:11px;white-space:pre-wrap;word-break:break-all}@media(max-width:900px){.book-grid{grid-template-columns:repeat(2,1fr)}.hero-grid,.book-detail,.two-col{grid-template-columns:1fr}.hero-card{display:grid;grid-template-columns:repeat(3,1fr)}.hero-stat{border-bottom:0;border-right:1px solid rgba(255,255,255,.12)}.admin-shell{grid-template-columns:1fr}.sidebar{display:flex;overflow:auto;padding:8px}.sidebar-title{display:none}.sidebar a{white-space:nowrap}.stats-grid{grid-template-columns:repeat(2,1fr)}.metadata{grid-template-columns:repeat(2,1fr)}.nav-wrap{height:auto;padding:12px 0;align-items:flex-start}.main-nav{gap:10px;flex-wrap:wrap;justify-content:flex-end}}@media(max-width:600px){.brand small{display:none}.brand strong{font-size:14px}.main-nav a:not(.btn){display:none}.hero{padding:55px 0}.search-box{display:grid}.book-grid{grid-template-columns:1fr 1fr;gap:10px}.book-body{padding:11px}.book-body h3{font-size:14px}.page-container,.container{width:min(100% - 22px,1180px)}.stats-grid,.form-grid,.metadata{grid-template-columns:1fr}.span-2{grid-column:span 1}.catalog-filter{display:grid}.catalog-filter input,.catalog-filter select{min-width:0;width:100%}.hero-card{grid-template-columns:1fr}.hero-stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.12)}.page-head{align-items:flex-start;flex-direction:column}.inline-form{flex-wrap:wrap}.admin-main{padding-top:20px}.book-detail{gap:24px}.detail-cover{max-width:220px}.book-grid .cover-placeholder span{font-size:45px}}

.big-money{font-size:32px;font-weight:800;color:var(--navy);margin:.2em 0}.reserve-box{margin:20px 0}

.compact-form{min-width:280px;padding:12px 0}.compact-form label{font-size:12px}.compact-form input,.compact-form select,.compact-form textarea{margin-top:3px}

/* v1.2.0 UI upgrades */
.main-nav a.btn,.main-nav a.btn:hover{color:#fff!important}.btn-login{background:#0b2341!important;color:#fff!important;border:2px solid #0b2341;box-shadow:0 4px 12px rgba(11,35,65,.18)}.btn-login:hover{background:#143d68!important;border-color:#143d68}.brand-logo{width:auto;height:46px;max-width:160px;object-fit:contain;display:block}.admin-menu-bar{display:flex;justify-content:flex-start;margin-bottom:14px}.admin-shell.menu-hidden{grid-template-columns:1fr}.admin-shell.menu-hidden .sidebar{display:none}.branding-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.upload-card{border:1px solid var(--border);border-radius:10px;padding:16px;background:#f8fafc}.upload-card h3{margin-top:0}.branding-preview{max-width:260px;max-height:90px;object-fit:contain;display:block;margin:0 0 14px}.favicon-preview{width:48px;height:48px;object-fit:contain;display:block;margin:0 0 14px}.cover-admin-preview{width:120px;max-height:170px;object-fit:cover;border-radius:8px;border:1px solid var(--border)}.import-panel{margin-top:0}.import-panel .panel-head{align-items:flex-start;gap:15px}.import-errors{margin-top:12px;background:#fff5f4;border:1px solid #ffc9c5;border-radius:8px;padding:10px 12px}.import-errors ul{margin-bottom:0}.online-book-box{border:1px solid #c9d8e8;background:#f4f8fc;border-radius:10px;padding:16px}.online-book-box h3{margin-top:0}.online-access-card{border:1px solid #bad8ca;background:#eef8f3;border-radius:10px;padding:16px;margin:18px 0}.online-access-card p{margin:.35em 0 1em}.reader-page{max-width:1400px}.reader-notice{background:#fff7dc;border:1px solid #eed28a;border-radius:9px;padding:12px 14px;margin-bottom:14px}.reader-shell{background:#17202b;border-radius:12px;padding:10px;min-height:70vh;box-shadow:var(--shadow)}.reader-frame{display:block;width:100%;height:75vh;border:0;background:#fff;border-radius:7px}.reader-help{margin-top:12px;font-size:13px}.upgrade-panel{border-left:4px solid var(--gold)}
@media(max-width:900px){.branding-grid{grid-template-columns:1fr}.admin-shell.menu-hidden{display:block}.admin-shell.menu-hidden .sidebar{display:none}.admin-menu-bar{position:sticky;top:76px;z-index:20;background:var(--bg);padding:8px 0}.brand-logo{max-width:130px;height:40px}}

/* v1.3.0 member access & public UX */
.nav-toggle{display:none;border:1px solid var(--border);background:#fff;color:var(--navy);border-radius:8px;padding:8px 11px;font-weight:700;cursor:pointer}.hero-actions{display:flex;align-items:center;gap:16px;margin-top:18px;flex-wrap:wrap}.btn-gold{background:var(--gold);color:#10263f}.btn-gold:hover{background:#e0bb64;color:#10263f}.hero-link{color:#e6edf5;font-weight:700}.hero-link:hover{color:#fff}.book-badges{display:flex;align-items:center;justify-content:space-between;gap:8px}.online-badge{display:inline-block;background:#e7f1ff;color:#174f8a;border-radius:999px;padding:3px 7px;font-size:9px;font-weight:800;letter-spacing:.06em}.online-filter{display:flex;align-items:center;gap:7px;background:#fff;border:1px solid #cfd7e1;border-radius:7px;padding:9px 11px;font-size:13px;font-weight:700;white-space:nowrap}.online-filter input{width:auto;margin:0}.empty-state{background:#fff;border:1px dashed #c8d1dc;border-radius:12px;padding:26px;text-align:center}.span-grid{grid-column:1/-1}.member-access-card{max-width:500px}.member-access-note{font-size:12px;margin:14px 0 0}.quick-session-badge{display:inline-block;margin:.3em 0 0;background:#e4f5ed;color:var(--green);border-radius:999px;padding:5px 10px;font-size:12px;font-weight:800}.access-settings-box{border:1px solid #c9d8e8;background:#f4f8fc;border-radius:10px;padding:16px}.access-settings-box h3{margin-top:0}.readonly-field{background:#eef2f6!important;color:#5f6c7b}.form-grid small{display:block;color:var(--muted);font-weight:400;margin-top:5px}.footer-grid a{color:#fff}.reader-shell iframe{overscroll-behavior:contain}
@media(max-width:900px){.hero-card{grid-template-columns:repeat(2,1fr)}.hero-stat:nth-child(2){border-right:0}.main-nav{gap:12px}}
@media(max-width:600px){.nav-wrap{align-items:center;flex-wrap:wrap}.nav-toggle{display:inline-flex}.main-nav{display:none;width:100%;flex-direction:column;align-items:stretch;gap:4px;padding:8px 0 4px;border-top:1px solid var(--border)}.main-nav.open{display:flex}.main-nav.open a:not(.btn){display:block}.main-nav a,.main-nav .link-button{padding:9px 4px}.main-nav .inline{display:block}.main-nav .btn{width:100%}.hero-actions{align-items:stretch;flex-direction:column}.hero-actions .btn{text-align:center}.hero-card{grid-template-columns:1fr 1fr}.hero-stat{border-right:0!important}.online-filter{width:100%}}

/* v1.4.0 barcode labels */
.barcode-preview{display:block;width:auto;max-width:220px;height:46px;object-fit:contain;background:#fff;border:1px solid #e0e5eb;border-radius:5px;padding:3px;margin:6px 0}.member-barcode-preview{max-width:190px}.barcode-print-link{display:inline-block;font-size:11px;font-weight:700;margin-top:2px}.head-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.member-barcode-card{display:flex;align-items:center;gap:16px;flex-wrap:wrap;background:#f8fafc;border:1px solid var(--border);border-radius:9px;padding:14px}.member-barcode-card>div{min-width:180px}.member-barcode-card small{display:block;color:var(--muted);font-weight:400}.member-barcode-card .barcode-preview{margin:0}@media(max-width:700px){.head-actions{width:100%}.head-actions .btn{flex:1}.barcode-preview{max-width:160px}.member-barcode-card{align-items:flex-start;flex-direction:column}}

/* v1.5.0 member card & photo management */
.member-photo-box{display:grid;grid-template-columns:130px 1fr;gap:18px;align-items:center;background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:16px}.member-photo-preview-wrap{display:flex;justify-content:center}.member-photo-preview,.member-photo-placeholder{width:105px;height:135px;border-radius:9px;border:1px solid var(--border);background:#eef2f6;object-fit:cover}.member-photo-placeholder{display:grid;place-items:center;font-size:36px;color:#718096}.member-photo-fields h3{margin:0 0 8px}.member-list-photo{width:46px;height:58px;border-radius:6px;object-fit:cover;border:1px solid var(--border);background:#eef2f6;display:grid;place-items:center}.member-list-photo.placeholder{font-size:20px;color:#718096}.member-actions{display:flex;gap:9px;flex-wrap:wrap}.member-actions a{font-weight:700;font-size:12px}
@media(max-width:700px){.member-photo-box{grid-template-columns:1fr}.member-photo-preview-wrap{justify-content:flex-start}}

/* =========================================================
   v1.6 Secure Online PDF Reader
   ========================================================= */
.reader-head{align-items:flex-end}.reader-actions{display:flex;align-items:center;gap:8px}.reader-mode-badge{display:inline-block;background:#e7f1ff;color:#174f8a;border-radius:999px;padding:4px 8px;font-size:11px;font-weight:800;vertical-align:middle}.reader-shell{position:relative;overflow:hidden}.reader-shell:fullscreen{width:100vw;height:100vh;border-radius:0;padding:0;background:#111827}.reader-shell:fullscreen .reader-frame{height:100vh;border-radius:0}.reader-watermarks{position:absolute;inset:0;z-index:3;pointer-events:none;overflow:hidden;display:grid;grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(3,1fr);align-items:center;justify-items:center}.reader-watermarks span{display:block;max-width:90%;transform:rotate(-24deg);color:rgba(15,35,65,.16);font-size:16px;font-weight:800;letter-spacing:.04em;white-space:nowrap;text-shadow:0 1px 0 rgba(255,255,255,.2);user-select:none}.online-source-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:12px 0}.online-source-status{display:flex;flex-direction:column;gap:3px;background:#fff;border:1px solid #cbd8e6;border-radius:8px;padding:10px 12px;margin:10px 0}.online-source-status.ok{background:#eef8f3;border-color:#bad8ca}.online-source-status span{font-size:12px;color:var(--muted);word-break:break-word}.online-book-box code{background:#e9eef5;padding:2px 5px;border-radius:4px}.reader-frame{position:relative;z-index:1}.reader-notice strong{color:var(--navy)}
@media(max-width:800px){.reader-head{align-items:flex-start}.reader-actions{width:100%}.reader-actions .btn{width:100%;text-align:center}.online-source-grid{grid-template-columns:1fr}.reader-watermarks span{font-size:11px}.reader-frame{height:72vh}}

/* v1.7 operational efficiency */
.password-field{position:relative;display:block}.password-field input{padding-right:48px}.password-toggle{position:absolute;right:7px;top:50%;transform:translateY(-50%);width:36px;height:36px;border:0;border-radius:7px;background:#eef2f6;color:var(--navy);cursor:pointer;font-size:17px;display:grid;place-items:center}.password-toggle:hover{background:#dfe7f0}.password-toggle:focus-visible{outline:3px solid rgba(20,61,104,.22);outline-offset:2px}
.import-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:24px}.import-card{display:flex;flex-direction:column;gap:14px}.import-card form{margin-top:auto}.import-hint{background:#f8fbff;border-left:4px solid var(--gold)}.import-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:20px}.import-stat strong{display:block;font-size:28px}.import-stat.create{border-top:4px solid #147a55}.import-stat.update{border-top:4px solid #2463a7}.import-stat.skip{border-top:4px solid #8a5d00}.import-stat.error{border-top:4px solid #b42318}.import-action{display:inline-block;padding:4px 8px;border-radius:999px;font-size:10px;font-weight:800}.import-action.create{background:#e4f5ed;color:#147a55}.import-action.update{background:#e8f1ff;color:#245f9e}.import-action.skip{background:#fff1cc;color:#8a5d00}.import-action.error{background:#fee8e6;color:#b42318}.import-confirm,.card-export-bar{display:flex;align-items:center;justify-content:space-between;gap:20px}.card-export-form{margin-top:16px}.member-filter{margin-bottom:16px}.member-filter select{min-width:150px}.card-export-bar h2{margin:.1em 0}.table-wrap input[type=checkbox]{width:auto}.head-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
@media(max-width:900px){.import-grid{grid-template-columns:1fr}.import-summary{grid-template-columns:repeat(2,1fr)}.import-confirm,.card-export-bar{align-items:flex-start;flex-direction:column}.head-actions{width:100%}}