:root{--primary:#0693e3;--primary-dark:#0479bc;--secondary:#93c5fd;--success:#16a34a;--warning:#d97706;--danger:#dc2626;--background:#eee;--surface:#f7fbff;--card:#fff;--text:#15212b;--text-soft:#31414f;--muted:#7b8791;--sidebar:#0f172a;--sidebar-text:#fff;--sidebar-border:#ffffff14;--border:#0693e31f;--shadow:0 12px 28px #11182714;--shadow-hover:0 22px 46px #11182724;--radius-lg:24px;--radius-md:18px;--radius-sm:14px;--app-header-padding-y:20px;--app-header-padding-x:28px;--app-sidebar-padding-y:18px;--app-sidebar-padding-x:14px;--app-card-padding:24px;--app-shell-gradient:radial-gradient(circle at top right, #0693e314, transparent 26%), linear-gradient(180deg, #f7fbff 0%, #eee 100%);--app-header-gradient:linear-gradient(90deg, #0b74cf 0%, var(--primary) 100%);--auth-aside-gradient:radial-gradient(circle at top left, #ffffff47, transparent 34%), linear-gradient(145deg, #0d82d6 0%, #0693e3 55%, #39a9f1 100%);--layout-card-radius:24px}body[data-brand-layout=compact]{--app-header-padding-y:16px;--app-header-padding-x:22px;--app-sidebar-padding-y:14px;--app-sidebar-padding-x:12px;--app-card-padding:18px;--layout-card-radius:20px}body[data-brand-layout=editorial]{--app-header-padding-y:24px;--app-header-padding-x:32px;--app-sidebar-padding-y:20px;--app-sidebar-padding-x:16px;--app-card-padding:28px;--layout-card-radius:28px}body[data-brand-theme=dark]{--background:#06111f;--surface:#0d1727;--card:#0f1b2e;--text:#e6edf7;--text-soft:#c2cfdd;--muted:#90a0b4;--sidebar:#08111f;--sidebar-text:#f8fafc;--sidebar-border:#94a3b829;--border:#94a3b82e;--shadow:0 16px 38px #00000047;--shadow-hover:0 22px 46px #00000057;--app-shell-gradient:radial-gradient(circle at top right, #f8c33a1f, transparent 28%), linear-gradient(180deg, #08111f 0%, #091424 100%);--app-header-gradient:linear-gradient(90deg, #08111f 0%, #10233d 100%);--auth-aside-gradient:radial-gradient(circle at top left, #f8c33a29, transparent 34%), linear-gradient(145deg, #08111f 0%, #10233d 55%, #1f3b63 100%)}body[data-brand-theme=dark] .page-hero,body[data-brand-theme=dark] .auth-card,body[data-brand-theme=dark] .admin-card,body[data-brand-theme=dark] .hero-stat-card,body[data-brand-theme=dark] .header-search-suggestions,body[data-brand-theme=dark] .header-search-suggestion{background:var(--card);color:var(--text);border-color:var(--border)}body[data-brand-theme=dark] .page-hero{background:radial-gradient(circle at 100% 0,#f8c33a14,#0000 24%),linear-gradient(#0c1726 0%,#0f1b2d 100%)}body[data-brand-theme=dark] .page-hero:after{opacity:.04}body[data-brand-theme=dark] .auth-aside{background:var(--auth-aside-gradient)}body[data-brand-theme=dark] .auth-aside:before{opacity:.16}body[data-brand-theme=dark] .branding-option-card,body[data-brand-theme=dark] .branding-live-preview{color:var(--text);background:linear-gradient(#102033 0%,#0d1727 100%);border-color:#94a3b833}body[data-brand-theme=dark] .branding-option-card span,body[data-brand-theme=dark] .branding-live-preview p,body[data-brand-theme=dark] .admin-helper{color:var(--text-soft)}*{box-sizing:border-box}body{min-height:100vh;color:var(--text);background:var(--background);margin:0;font-family:Poppins,Inter,Segoe UI,Helvetica Neue,Arial,sans-serif}button,input,select,textarea{font:inherit}#root{min-height:100vh}.library-app{background:var(--app-shell-gradient);min-height:100vh}.app-shell{grid-template-columns:280px minmax(0,1fr);display:grid}.app-shell.auth-screen-shell{grid-template-columns:minmax(0,1fr)}.app-sidebar{height:100vh;padding:var(--app-sidebar-padding-y) var(--app-sidebar-padding-x);background:var(--sidebar);color:var(--sidebar-text);border-right:1px solid var(--sidebar-border);grid-template-rows:auto 1fr auto;gap:20px;display:grid;position:sticky;top:0;overflow:hidden;box-shadow:8px 0 24px #0f172a0a}.sidebar-brand{box-shadow:none;background:0 0;border-radius:22px;align-items:center;gap:14px;padding:14px 14px 18px;display:flex}.sidebar-logo{object-fit:contain;width:40px;height:40px}.sidebar-brand-copy{gap:4px;display:grid}.sidebar-brand-copy strong{letter-spacing:.08em;color:var(--sidebar-text);font-size:1.3rem}.sidebar-brand-copy span{color:color-mix(in srgb, var(--sidebar-text) 74%, transparent);font-size:.9rem}.sidebar-nav{align-content:start;gap:14px;padding-right:0;display:grid;overflow:visible}.sidebar-group{gap:8px;display:grid}.sidebar-group-title{color:#ffffff94;letter-spacing:.08em;text-transform:uppercase;padding:0 10px;font-size:.72rem;font-weight:700}.sidebar-link{color:#ffffffd6;border:1px solid #0000;border-radius:14px;align-items:center;gap:10px;min-height:42px;padding:0 12px;font-size:.95rem;text-decoration:none;transition:background .16s,border-color .16s,transform .16s,color .16s;display:flex}.sidebar-link:hover{background:#ffffff14;transform:translate(2px)}.sidebar-link.active{color:#fff;background:linear-gradient(90deg,#0693e338,#f8c33a1f);border-color:#ffffff1f;box-shadow:inset 0 0 0 1px #ffffff14}.sidebar-link-icon{background:#ffffff14;border-radius:10px;justify-content:center;align-items:center;width:30px;height:30px;display:inline-flex}.sidebar-parent-link{font-weight:700}.sidebar-subnav{border-left:1px solid #ffffff1f;gap:8px;margin-left:16px;padding-left:12px;display:grid}.sidebar-sub-link{min-height:38px;padding:0 10px;font-size:.9rem}.sidebar-footer{border-top:1px solid #ffffff1f;gap:12px;padding:12px 8px 0;display:grid}.sidebar-level-card{box-shadow:var(--shadow);background:#ffffff0f;border:1px solid #ffffff1a;border-radius:22px;gap:10px;padding:18px;display:grid}.sidebar-level-label{color:#ffffffb3;font-size:.85rem}.sidebar-level-card strong{color:#f8c33a;font-size:1.4rem}.sidebar-level-row{color:#ffffffb8;justify-content:space-between;align-items:center;gap:10px;font-size:.9rem;display:flex}.sidebar-level-row strong{color:var(--secondary);font-size:1rem}.sidebar-progress{background:#ffffff14;border-radius:999px;height:8px;position:relative;overflow:hidden}.sidebar-progress-fill{border-radius:inherit;background:linear-gradient(90deg, #f8c33a 0%, var(--secondary) 100%);height:100%;display:block}.sidebar-level-card small{color:#ffffffa8}.sidebar-levels{flex-wrap:wrap;gap:8px;display:flex}.level-badge{border-radius:999px;justify-content:center;align-items:center;padding:7px 10px;font-size:.76rem;font-weight:700;display:inline-flex}.level-badge.bronze{color:#8a4b17;background:#fbbf242e}.level-badge.silver{color:#445569;background:#cbd5e147}.level-badge.gold{color:#9a6700;background:#facc1538}.app-main{grid-template-rows:auto 1fr;min-width:0;display:grid}.app-header{z-index:10;padding:var(--app-header-padding-y) var(--app-header-padding-x);background:var(--app-header-gradient);border-bottom:1px solid #ffffff1f;grid-template-columns:minmax(260px,1.2fr) minmax(180px,.9fr) auto;align-items:center;gap:18px;display:grid;position:sticky;top:0;box-shadow:0 16px 30px #0693e32e}.header-search{position:relative}.header-search input{color:#fff;background:#ffffff24;border:1px solid #ffffff24;border-radius:16px;width:100%;min-height:44px;padding:0 58px 0 18px;box-shadow:0 10px 20px #11182714}.header-search input::placeholder{color:#ffffffdb}.header-search-shortcut{color:#ffffffeb;background:#ffffff24;border:1px solid #ffffff1f;border-radius:999px;justify-content:center;align-items:center;width:30px;height:30px;padding:0;display:inline-flex;position:absolute;top:50%;right:14px;transform:translateY(-50%)}.header-search-suggestions{z-index:18;background:#fff;border:1px solid #0693e31f;border-radius:18px;gap:8px;padding:10px;display:grid;position:absolute;top:calc(100% + 10px);left:0;right:0;box-shadow:0 18px 42px #0f172a24}.header-search-suggestion{width:100%;color:var(--text);text-align:left;box-shadow:none;background:#fff;border:1px solid #0000;border-radius:14px;gap:4px;padding:12px 14px;display:grid}.header-search-suggestion:hover{background:#0693e30d;border-color:#0693e31a}.header-search-suggestion strong{font-size:.92rem}.header-search-suggestion span,.header-search-empty{color:var(--muted);font-size:.82rem}.header-search-empty{padding:10px 12px}.header-route-copy{gap:3px;min-width:0;display:grid}.header-route-copy strong{color:#fff;white-space:nowrap;text-overflow:ellipsis;font-size:.95rem;overflow:hidden}.header-route-copy span{color:#ffffffc2;white-space:nowrap;text-overflow:ellipsis;font-size:.82rem;overflow:hidden}.header-right{justify-content:flex-end;align-items:center;gap:10px;display:flex}.header-auth-tools,.header-guest-actions{flex-wrap:nowrap;align-items:center;gap:10px;display:inline-flex}.header-notifications{align-items:center;display:inline-flex;position:relative}.header-icon-button{color:#fff;width:42px;height:42px;box-shadow:none;background:#ffffff1f;border:1px solid #ffffff24;border-radius:14px;position:relative}.header-badge{background:var(--danger);color:#fff;border-radius:999px;min-width:20px;height:20px;padding:0 6px;font-size:.72rem;font-weight:700;line-height:20px;position:absolute;top:-4px;right:-4px}.header-ghost-link,.header-primary-link{border-radius:14px;justify-content:center;align-items:center;min-height:40px;padding:0 14px;font-weight:600;text-decoration:none;display:inline-flex}.header-ghost-link{color:#fff}.header-primary-link{color:#fff;background:#ffffff2e}.header-profile{justify-content:center;align-items:center;padding:0;display:flex;position:relative}.header-profile-button{width:42px;height:42px;box-shadow:none;color:inherit;background:#ffffff1a;border:1px solid #ffffff24;border-radius:999px;justify-content:center;align-items:center;padding:0;display:inline-flex}.header-profile-button-guest{width:auto;min-width:54px;padding:0 10px}.header-profile-avatar{width:34px;height:34px;color:var(--primary);background:#ffffffeb;border-radius:999px;justify-content:center;align-items:center;font-weight:700;display:inline-flex}.header-profile-avatar-guest{color:#fff;background:0 0;width:auto;min-width:42px;padding:0}.header-profile-popover{opacity:0;visibility:hidden;z-index:30;background:#fff;border:1px solid #0693e31f;border-radius:14px;gap:7px;min-width:154px;padding:10px 12px;transition:opacity 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p{color:var(--muted);margin:0;font-size:.98rem;line-height:1.6}.page-hero-side{justify-items:end;gap:14px;display:grid}.page-hero-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:12px;display:flex}.page-hero-stats{grid-template-columns:repeat(3,minmax(120px,1fr));gap:12px;display:grid}.hero-stat-card{background:#0693e30f;border:1px solid #0693e314;border-radius:18px;gap:6px;min-width:120px;padding:16px 18px;display:grid}.hero-stat-card span{color:var(--muted);font-size:.8rem;font-weight:600}.hero-stat-card strong{font-size:1.1rem}.page-layout-content,.page-stack{gap:22px;display:grid}.filter-bar,.ui-card,.ui-section,.panel-block,.info-card,.card,.result-panel,.profile-card,.premium-panel,.answer-card,.quality-preview{border-radius:var(--radius-lg);background:var(--card);box-shadow:var(--shadow);border:1px solid #0693e314}.filter-bar{padding:18px 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16px}.admin-filter-trigger.active{background:#0693e329}.admin-filter-count{background:var(--primary);color:#fff;border-radius:999px;justify-content:center;align-items:center;min-width:22px;height:22px;margin-left:8px;padding:0 6px;font-size:.74rem;font-weight:700;display:inline-flex}.admin-filters-panel{z-index:30;background:#fff;border:1px solid #0693e31a;border-radius:20px;width:min(380px,100vw - 160px);padding:18px;position:absolute;top:calc(100% + 12px);right:0;box-shadow:0 20px 48px #11182729}.admin-filters-list{gap:14px;display:grid}.admin-filter-option{min-height:48px;color:var(--text);text-align:left;box-shadow:none;background:#fff;border:1px solid #15212b1a;border-radius:14px;justify-content:space-between;align-items:center;gap:14px;padding:0 16px;display:flex}.admin-filter-option.active{background:#0693e30f;border-color:#0693e32e}.admin-filter-option strong{color:var(--primary);font-size:.8rem}.admin-filter-actions-panel{justify-content:flex-end}.admin-clear-filters{min-height:46px;color:var(--primary);background:0 0;border:none;border-radius:14px;align-self:center;align-items:center;padding:0 14px;font-weight:600;display:inline-flex}.admin-page-content{gap:24px;display:grid}.admin-overview-grid{grid-template-columns:repeat(3,minmax(0,1fr)) minmax(260px,.9fr);gap:18px;display:grid}.admin-kpi-card,.admin-ranking-card{box-shadow:var(--shadow);background:#fff;border:1px solid #0693e314;border-radius:24px;align-items:flex-start;gap:16px;padding:22px;display:flex}.admin-kpi-card.blue{background:linear-gradient(135deg,#0693e314,#0693e305)}.admin-kpi-card.green{background:linear-gradient(135deg,#16a34a14,#16a34a05)}.admin-kpi-card.purple{background:linear-gradient(135deg,#9333ea14,#9333ea05)}.admin-kpi-icon{color:#fff;background:var(--primary);border-radius:18px;justify-content:center;align-items:center;width:56px;height:56px;display:inline-flex;box-shadow:0 12px 24px #0693e32e}.admin-kpi-card.green .admin-kpi-icon{background:var(--success);box-shadow:0 12px 24px #16a34a2e}.admin-kpi-card.purple .admin-kpi-icon{background:#8b5cf6;box-shadow:0 12px 24px #8b5cf62e}.admin-kpi-copy{gap:6px;display:grid}.admin-kpi-copy strong{letter-spacing:-.04em;font-size:2rem}.admin-kpi-copy span{color:var(--text);font-weight:700}.admin-kpi-copy small{color:var(--muted);line-height:1.5}.admin-ranking-card{background:linear-gradient(#fffaf0 0%,#fff 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minmax(520px,1.12fr);width:min(1140px,100%)}.auth-shell-simple{justify-content:center;width:100%;display:flex}.auth-aside{background:var(--auth-aside-gradient);color:#fff;border-radius:28px;align-content:start;gap:18px;padding:30px 28px;display:grid;position:relative;overflow:hidden;box-shadow:0 24px 48px #0693e33d}.auth-aside:before{content:"";background-image:var(--login-banner-image);opacity:.18;pointer-events:none;background-position:50%;background-repeat:no-repeat;background-size:cover;position:absolute;inset:0}.auth-aside>*{z-index:1;position:relative}.auth-aside--login{gap:16px;min-height:500px;padding:26px 24px}.auth-aside--register{padding:30px 28px}.auth-aside h1{margin:0;font-size:2rem;line-height:1.15}.auth-aside p{color:#ffffffe0;margin:0;font-size:1rem;line-height:1.6}.auth-aside-list{gap:14px;display:grid}.auth-aside-item{background:#ffffff1f;border:1px solid #ffffff24;border-radius:18px;gap:6px;padding:16px 18px;display:grid}.auth-aside-item strong{font-size:1rem}.auth-aside-item span{color:#ffffffdb;line-height:1.5}.auth-card{width:100%;padding:var(--app-card-padding);border-radius:var(--layout-card-radius);box-shadow:var(--shadow);background:linear-gradient(#fff 0%,#fbfdff 100%);border:1px solid #0693e314}.auth-card--login{max-width:540px;min-height:0;padding:calc(var(--app-card-padding) - 2px) var(--app-card-padding) var(--app-card-padding);align-content:start;gap:0;margin:0 auto;display:grid}.auth-card--register{max-width:760px}.auth-card-minimal{width:min(560px,100%);padding:30px}.auth-card-brand{align-items:center;gap:12px;margin-bottom:18px;display:inline-flex}.auth-card--login .auth-card-brand{text-align:left;justify-content:center}.auth-card-brand img{object-fit:cover;border-radius:12px;width:38px;height:38px}.auth-card-brand strong{color:var(--primary);letter-spacing:.06em;font-size:1.12rem;display:block}.auth-card-brand span{color:var(--text-soft);margin-top:2px;font-size:.88rem;display:block}.auth-header{justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:22px;display:flex}.auth-header-copy{gap:6px;display:grid}.auth-header-copy h1{margin:0;font-size:1.9rem}.auth-header-copy p{color:var(--text-soft);margin:0;line-height:1.55}.auth-tag{color:var(--primary);text-transform:uppercase;letter-spacing:.08em;font-size:.8rem;font-weight:700}.auth-close{color:var(--primary);box-shadow:none;background:#0693e314;border:none;border-radius:999px;padding:10px 14px}.auth-close:hover{transform:none}.auth-switch{background:#0693e314;border:1px solid #0693e314;border-radius:999px;justify-content:center;align-items:center;gap:4px;width:fit-content;margin:0 auto 18px;padding:4px;display:flex}.auth-switch-item{color:var(--text);box-shadow:none;background:0 0;border:none;border-radius:999px;min-width:98px;padding:8px 16px}.auth-switch-item.active{color:var(--primary);box-shadow:var(--shadow);background:#fff}.auth-switch-item:hover{transform:none}.auth-form{gap:18px;display:grid}.auth-form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.auth-form{margin-top:0}.auth-card--login .auth-form{max-width:100%}.auth-form label{gap:8px;display:grid}.auth-form label span{color:#173b63;font-weight:600}.auth-form input{background:#fff;border:1px solid #0693e324;border-radius:14px;width:100%;padding:14px 15px;transition:border-color .18s,box-shadow .18s,transform .18s}.auth-form input:focus{border-color:#0693e36b;outline:none;box-shadow:0 0 0 4px #0693e31a}.auth-form small{color:var(--text-soft);font-size:.84rem;line-height:1.5}.auth-input-with-action{position:relative}.auth-input-with-action input{padding-right:90px}.auth-input-action{color:var(--primary);box-shadow:none;background:0 0;border:none;padding:6px 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#10192338}.book-modal-close{z-index:2;width:42px;height:42px;color:var(--text);background:#10192314;border:none;border-radius:999px;font-weight:700;position:absolute;top:16px;right:16px}.book-modal-layout{grid-template-columns:minmax(280px,360px) minmax(0,1fr);gap:28px;padding:28px;display:grid}.book-modal-cover{align-self:start;position:relative}.book-modal-cover img{width:100%;box-shadow:var(--shadow-hover);border-radius:22px;display:block}.modal-status-pill{border-radius:999px;align-items:center;padding:10px 14px;font-size:.86rem;font-weight:700;display:inline-flex;position:absolute;bottom:16px;left:16px}.modal-status-pill.available{color:#075b8b;background:#0693e31f}.modal-status-pill.borrowed{color:#fff;background:#101923c7}.book-modal-content{align-content:start;gap:20px;display:grid}.book-modal-header{gap:8px;display:grid}.book-modal-header h2{letter-spacing:-.03em;margin:0;font-size:clamp(1.7rem,2vw,2.4rem)}.book-modal-header p{color:var(--muted);margin:0;font-size:1rem}.book-modal-meta{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.book-modal-description{color:#31414f;margin:0;font-size:.98rem;line-height:1.7}.book-modal-summary{background:#0693e312;border:1px solid #0693e314;border-radius:18px;gap:6px;padding:14px 16px;display:grid}.book-modal-summary strong{color:var(--text);font-size:.95rem}.book-modal-summary p{color:#516378;margin:0;line-height:1.65}.modal-borrow-panel{background:#0693e30f;border:1px solid #0693e31a;border-radius:18px;gap:10px;padding:18px;display:grid}.modal-borrow-panel strong{font-size:1rem}.modal-borrow-panel span{color:var(--muted)}.modal-borrow-panel.muted{background:#7b879114;border-color:#7b879124}.premium-access-note{background:#0693e30f;border:1px solid #0693e31f;border-radius:18px;gap:6px;padding:16px 18px;display:grid}.premium-access-note strong{font-size:1rem}.premium-access-note 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