:root{--bg:#f2f3f5;--surface:#fff;--surface-subtle:#fafbfc;--surface-glass:#ffffffd9;--navy:#0a1628;--navy-mid:#0d2347;--cobalt:#0051c6;--cobalt-light:#1a6ae0;--metallic:#004a99;--gold:#c5a367;--gold-light:#d4b97a;--gold-pale:#c5a3671f;--slate:#4a5568;--slate-light:#718096;--mist:#a0aec0;--border:#0a162814;--border-mid:#0a162824;--border-strong:#0a162838;--border-cobalt:#0051c680;--border-gold:#c5a36766;--premium-green:#0a8552;--premium-red:#cc2418;--shadow-xs:0 1px 3px #0a16280f, 0 1px 2px #0a16280a;--shadow-sm:0 4px 16px #0a16280f, 0 2px 8px #0a16280a;--shadow-md:0 12px 40px #0a16281a, 0 4px 16px #0a16280f;--shadow-lg:0 32px 80px #0a162829, 0 8px 24px #0a162814;--shadow-gold:0 8px 32px #c5a36726;--ease:cubic-bezier(.23, 1, .32, 1);--ease-spring:cubic-bezier(.34, 1.56, .64, 1);--dur:.38s;--dur-fast:.22s}*,:before,:after{box-sizing:border-box}.premium-root{background:var(--bg);min-height:100vh;color:var(--navy);-webkit-font-smoothing:antialiased;background-image:radial-gradient(80% 40% at 20% 0,#0051c60a 0%,#0000 60%),radial-gradient(60% 30% at 80% 100%,#c5a3670f 0%,#0000 60%);padding:80px 48px 120px;font-family:DM Sans,system-ui,sans-serif}.premium-header{max-width:1400px;margin:0 auto 72px}.premium-header-top{border-bottom:1px solid var(--border-mid);justify-content:space-between;align-items:flex-end;padding-bottom:40px;display:flex;position:relative}.premium-header-top:after{content:"";background:linear-gradient(90deg, var(--gold), transparent);width:80px;height:2px;position:absolute;bottom:-1px;left:0}.premium-kicker{color:#111;letter-spacing:.22em;text-transform:uppercase;align-items:center;gap:10px;margin:0 0 14px;font-size:.68rem;font-weight:500;display:flex}.premium-kicker:before{content:"";background:var(--gold);width:20px;height:1px;display:inline-block}.premium-main-title{color:#0051c6;letter-spacing:-.02em;margin:0;font-family:Cormorant Garamond,serif;font-size:clamp(2.8rem,5vw,4.4rem);font-weight:300;line-height:1.05}.premium-subtitle{color:var(--slate);max-width:520px;margin:18px 0 0;font-size:.925rem;font-weight:500;line-height:1.7}.premium-header-stat{text-align:right;background:var(--surface);border:1px solid var(--border-gold);padding:20px 32px;position:relative;overflow:hidden}.premium-header-stat:before{content:"";background:linear-gradient(90deg, var(--gold), var(--gold-light), var(--gold));height:2px;position:absolute;top:0;left:0;right:0}.premium-stat-number{color:var(--navy);letter-spacing:-.02em;font-family:Cormorant Garamond,serif;font-size:3.8rem;font-weight:300;line-height:1;display:block}.premium-stat-text{letter-spacing:.18em;text-transform:uppercase;color:#000;margin-top:6px;font-size:.6rem;font-weight:500;display:block}.premium-books-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:24px;max-width:1400px;margin:0 auto;display:grid}.premium-book-card{background:var(--surface);border:1px solid var(--border);cursor:pointer;height:400px;box-shadow:var(--shadow-xs);transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);border-radius:0;flex-direction:column;display:flex;position:relative;overflow:visible}.premium-book-card:before{content:"";background:linear-gradient(90deg, transparent, var(--gold), transparent);opacity:0;height:2px;transition:opacity var(--dur) var(--ease);z-index:2;position:absolute;top:0;left:0;right:0}.premium-book-card:after{content:"";background:linear-gradient(180deg, var(--cobalt), var(--cobalt-light));opacity:0;width:2px;transition:opacity var(--dur) var(--ease);z-index:2;position:absolute;top:0;bottom:0;left:0}.premium-book-card:hover{border-color:var(--border-cobalt);box-shadow:var(--shadow-md);transform:translateY(-6px)scale(1.01)}.premium-book-card:hover:before,.premium-book-card:hover:after{opacity:1}.premium-card-image-container{aspect-ratio:1/1.38;background:var(--surface-subtle);border-bottom:1px solid var(--border);justify-content:center;align-items:center;padding:10px;display:flex;position:relative;overflow:hidden}.premium-card-image{object-fit:cover;width:100%;height:100%;transition:transform var(--dur) var(--ease), filter var(--dur) var(--ease)}.premium-book-card:hover .premium-card-image{filter:brightness(1.03);transform:scale(1.05)}.premium-card-image-container:after{content:"";opacity:0;transition:opacity var(--dur) var(--ease);pointer-events:none;background:linear-gradient(#0000 50%,#0a16281f 100%);position:absolute;inset:0}.premium-book-card:hover .premium-card-image-container:after{opacity:1}.premium-card-content{text-align:center;background:var(--surface);flex-direction:column;flex-grow:1;padding:14px 18px 16px;display:flex}.premium-title-price-row{flex-direction:column;align-items:center;gap:8px;margin-bottom:10px;display:flex}.premium-card-title{color:var(--navy);-webkit-line-clamp:2;text-align:center;letter-spacing:.01em;-webkit-box-orient:vertical;margin:0;font-family:Cormorant Garamond,serif;font-size:1.1rem;font-weight:400;line-height:1.35;display:-webkit-box;overflow:hidden}.premium-inline-price{flex-direction:row;flex-shrink:0;justify-content:center;align-items:center;gap:14px;display:flex}.premium-price-wrapper{flex-direction:column;align-items:center;line-height:1.2;display:flex}.premium-price-label,.premium-mrp-label{text-transform:uppercase;letter-spacing:.1em;color:var(--mist);margin-bottom:3px;font-size:.48rem;font-weight:500}.premium-price{color:var(--premium-green);font-family:DM Sans,sans-serif;font-size:1.15rem;font-weight:600}.premium-original-price{color:var(--premium-red);opacity:.85;font-size:.85rem;font-weight:400;text-decoration:line-through}.premium-card-meta{flex-wrap:wrap;justify-content:center;gap:5px;margin-bottom:12px;display:flex}.premium-chip{text-transform:uppercase;letter-spacing:.08em;color:var(--cobalt);background:#0051c60f;border:1px solid #0051c626;padding:3px 8px;font-size:.6rem;font-weight:500}.premium-chip.ghost{color:var(--slate-light);border:1px solid var(--border);background:0 0}.premium-chip.already-chip{background:var(--gold-pale);border-color:var(--border-gold);color:var(--gold)}.premium-view-details-btn{text-transform:uppercase;letter-spacing:.18em;cursor:pointer;color:#fff;background:#0051c6;border:1px solid #ffffff26;border-color:#ffffff26 #001e6466 #001e6480 #ffffff1a;border-radius:10px;width:100%;margin-top:auto;padding:11px;font-family:DM Sans,sans-serif;font-size:.58rem;font-weight:600;transition:background .3s cubic-bezier(.23,1,.32,1),box-shadow .3s cubic-bezier(.23,1,.32,1);position:relative;overflow:hidden}.premium-view-details-btn:before{content:"";pointer-events:none;background:linear-gradient(105deg,#0000 20%,#ffffff21 50%,#0000 80%);width:60%;height:100%;transition:left .42s cubic-bezier(.23,1,.32,1);position:absolute;top:0;left:-100%}.premium-view-details-btn:after{content:"";opacity:.7;background:linear-gradient(90deg,#003da5,#4d8eff,#003da5);height:2px;position:absolute;bottom:0;left:0;right:0}.premium-view-details-btn span{z-index:1;letter-spacing:.18em;position:relative}.premium-book-card:hover .premium-view-details-btn{background:#0046aa;box-shadow:0 6px 20px #0051c659}.premium-book-card:hover .premium-view-details-btn:before{left:150%}.premium-modal-overlay{-webkit-backdrop-filter:blur(16px)saturate(1.2);z-index:1000;animation:overlayIn var(--dur-fast) var(--ease);background:#060e1c99;place-items:center;padding:24px;display:grid;position:fixed;inset:0}@keyframes overlayIn{0%{opacity:0}to{opacity:1}}.premium-modal-wrapper{background:var(--surface);border:1px solid var(--border-mid);width:min(1080px,100%);max-height:92vh;box-shadow:var(--shadow-lg);animation:modalIn var(--dur) var(--ease-spring);flex-direction:column;display:flex;position:relative;overflow-y:auto}.premium-modal-wrapper:before{content:"";background:linear-gradient(90deg, var(--cobalt), var(--gold), var(--cobalt));z-index:10;height:2px;position:absolute;top:0;left:0;right:0}@keyframes modalIn{0%{opacity:0;transform:translateY(16px)scale(.99)}to{opacity:1;transform:translateY(0)scale(1)}}.premium-modal-close{border:1px solid var(--border-mid);background:var(--surface);width:40px;height:40px;color:var(--slate);cursor:pointer;z-index:60;transition:all var(--dur-fast) var(--ease);border-radius:50%;place-items:center;display:grid;position:absolute;top:20px;right:20px}.premium-modal-close:hover{background:var(--navy);border-color:var(--navy);color:var(--surface);transform:rotate(90deg)}.premium-modal-hero-gallery{border-bottom:1px solid var(--border);background:linear-gradient(160deg,#f7f8fa 0%,#fafbfc 100%);justify-content:center;padding:56px 40px 48px;display:flex;position:relative}.premium-modal-hero-gallery:before{content:"";pointer-events:none;background-image:radial-gradient(circle,#0a162808 1px,#0000 1px);background-size:24px 24px;position:absolute;inset:0}.premium-gallery-strip-expanded{z-index:1;justify-content:center;align-items:stretch;gap:40px;width:100%;display:flex;position:relative}.premium-gallery-frame-large{flex-direction:column;flex:1;align-items:center;gap:16px;max-width:420px;display:flex}.premium-image-wrapper{background:var(--surface);border:1px solid var(--border-mid);width:100%;height:480px;box-shadow:var(--shadow-sm);transition:box-shadow var(--dur) var(--ease);justify-content:center;align-items:center;padding:20px;display:flex;position:relative;overflow:hidden}.premium-image-wrapper:hover{box-shadow:var(--shadow-md)}.premium-image-wrapper:before,.premium-image-wrapper:after{content:"";width:16px;height:16px;position:absolute}.premium-image-wrapper:before{border-top:2px solid var(--gold);border-left:2px solid var(--gold);top:8px;left:8px}.premium-image-wrapper:after{border-bottom:2px solid var(--gold);border-right:2px solid var(--gold);bottom:8px;right:8px}.premium-modal-large-image{object-fit:contain;width:100%;height:100%}.premium-strip-label{text-transform:uppercase;letter-spacing:.18em;color:var(--gold);align-items:center;gap:8px;font-size:.6rem;font-weight:500;display:flex}.premium-strip-label:before,.premium-strip-label:after{content:"";background:var(--gold-light);opacity:.6;width:16px;height:1px}.premium-modal-details-block{padding:56px 72px 64px}.premium-book-header{margin-bottom:40px}.premium-book-title{letter-spacing:-.01em;color:var(--navy);margin:0;font-family:Cormorant Garamond,serif;font-size:2.8rem;font-weight:300;line-height:1.2}.premium-editorial-divider{background:linear-gradient(90deg, var(--gold), var(--gold-light));width:56px;height:2px;margin-top:20px}.premium-book-info{border:1px solid var(--border);grid-template-columns:repeat(3,1fr);gap:0;margin-bottom:44px;display:grid;overflow:hidden}.premium-info-row{border-right:1px solid var(--border);padding:20px 24px;position:relative}.premium-info-row:last-child{border-right:none}.premium-info-row:before{content:"";height:2px;transition:background var(--dur-fast) var(--ease);background:0 0;position:absolute;top:0;left:0;right:0}.premium-info-row:hover:before{background:var(--gold)}.premium-info-label{text-transform:uppercase;color:var(--mist);letter-spacing:.14em;margin-bottom:8px;font-size:.58rem;font-weight:500;display:block}.premium-info-value{color:var(--navy);font-family:DM Sans,sans-serif;font-size:1rem;font-weight:500}.condition-emerald{color:var(--premium-green);font-weight:600}.premium-pricing-section{border:1px solid var(--border-cobalt);background:linear-gradient(135deg,#f9fafe 0%,#f5f7fb 100%);margin-bottom:44px;padding:36px;position:relative;overflow:hidden}.premium-pricing-section:before{content:"";background:linear-gradient(180deg, var(--cobalt), var(--cobalt-light));width:3px;position:absolute;top:0;bottom:0;left:0}.premium-price-title{text-transform:uppercase;letter-spacing:.14em;color:var(--mist);font-size:.6rem;font-weight:500}.premium-price-display-large{color:var(--navy);letter-spacing:-.02em;margin:12px 0 0;font-family:Cormorant Garamond,serif;font-size:3.4rem;font-weight:300}.premium-price-comparison{border-top:1px solid var(--border);justify-content:space-between;align-items:center;margin-top:24px;padding-top:20px;display:flex}.premium-price-label-small{color:var(--mist);text-transform:uppercase;letter-spacing:.08em;font-size:.65rem}.premium-price-original-large{color:var(--premium-red);margin-top:4px;font-size:1.15rem;font-weight:400;text-decoration:line-through;display:block}.premium-savings-label{text-transform:uppercase;color:var(--premium-green);letter-spacing:.08em;text-align:right;margin-bottom:4px;font-size:.58rem;font-weight:600;display:block}.premium-savings-amount{color:var(--premium-green);font-size:1.2rem;font-weight:700;display:block}.premium-seller-info{border:1px solid var(--border-gold);background:linear-gradient(135deg, #fffdf8, var(--surface));animation:slideDown .26s var(--ease);margin-bottom:40px;padding:28px;position:relative}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.premium-seller-info:before{content:"";background:linear-gradient(90deg, var(--gold), var(--gold-light), transparent);height:2px;position:absolute;top:0;left:0;right:0}.premium-seller-title{text-transform:uppercase;letter-spacing:.14em;color:var(--gold);margin:0 0 20px;font-size:.6rem;font-weight:500}.premium-seller-card{align-items:center;gap:20px;display:flex}.premium-seller-avatar{background:linear-gradient(135deg, var(--navy-mid), var(--cobalt));width:52px;height:52px;color:var(--surface);flex-shrink:0;place-items:center;font-family:Cormorant Garamond,serif;font-size:1.4rem;font-weight:400;display:grid}.premium-seller-details{flex-direction:column;gap:3px;display:flex}.premium-seller-name{color:var(--navy);margin:0;font-size:1.05rem;font-weight:500}.premium-seller-email{color:var(--slate);margin:0;font-size:.875rem}.premium-seller-phone{color:var(--navy);margin:4px 0 0;font-size:.85rem}.premium-verified-badge{text-transform:uppercase;letter-spacing:.08em;background:var(--gold-pale);color:var(--gold);border:1px solid var(--border-gold);align-self:flex-start;margin-top:8px;padding:3px 10px;font-size:.55rem;font-weight:600}.premium-interest-feedback{animation:slideDown .26s var(--ease);align-items:flex-start;gap:16px;margin:24px 0;padding:20px 24px;font-size:.9rem;display:flex;position:relative;overflow:hidden}.premium-interest-feedback.success{color:#065f46;background:#f0faf5;border:1px solid #0a855233}.premium-interest-feedback.success:before{content:"";background:var(--premium-green);width:3px;position:absolute;top:0;bottom:0;left:0}.premium-interest-feedback.already{border:1px solid var(--border-gold);color:var(--navy);background:#fffdf8}.premium-interest-feedback.already:before{content:"";background:var(--gold);width:3px;position:absolute;top:0;bottom:0;left:0}.premium-interest-feedback.own{background:var(--surface-subtle);border:1px solid var(--border);color:var(--navy)}.premium-interest-feedback.own:before{content:"";background:var(--cobalt);width:3px;position:absolute;top:0;bottom:0;left:0}.premium-feedback-icon{flex-shrink:0;font-size:1.1rem}.premium-feedback-title{margin:0 0 4px;font-weight:600}.premium-feedback-body{opacity:.85;margin:0;line-height:1.55}.premium-modal-buttons-horizontal{flex-direction:row;gap:14px;width:100%;display:flex}.action-flex-item{flex:1}.premium-btn{text-transform:uppercase;letter-spacing:.16em;cursor:pointer;text-align:center;transition:all var(--dur-fast) var(--ease);border-radius:0;padding:17px 24px;font-family:DM Sans,sans-serif;font-size:.7rem;font-weight:500;position:relative;overflow:hidden}.premium-btn-primary{background:var(--navy);color:var(--surface);border:1px solid var(--navy)}.premium-btn-primary:after{content:"";pointer-events:none;background:linear-gradient(135deg,#ffffff14 0%,#0000 50%);position:absolute;inset:0}.premium-btn-primary:hover:not(:disabled){background:var(--cobalt);border-color:var(--cobalt);transform:translateY(-1px);box-shadow:0 8px 24px #0051c64d}.premium-btn-secondary{color:var(--navy);border:1px solid var(--border-mid);background:0 0}.premium-btn-secondary:hover{border-color:var(--border-strong);background:var(--surface-subtle);transform:translateY(-1px)}.premium-btn-secondary.active-state{border-color:var(--gold);background:var(--gold-pale);color:var(--navy)}.premium-btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none!important;transform:none!important}.interest-btn-done,.interest-btn-already{border-color:var(--border)!important;color:var(--mist)!important;background:0 0!important}.interest-btn-own{background:var(--surface-subtle)!important;border-color:var(--border)!important;color:var(--slate-light)!important}.interest-btn-error{border-color:var(--premium-red)!important;color:var(--premium-red)!important;background:0 0!important}.interest-btn-loading{background:var(--surface-subtle)!important;color:var(--navy)!important;border-color:var(--border-mid)!important}.premium-btn-spinner{border:1.5px solid #0a162826;border-top-color:var(--cobalt);vertical-align:middle;border-radius:50%;width:12px;height:12px;margin-right:8px;animation:.7s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.premium-state-wrap{text-align:center;place-items:center;min-height:60vh;display:grid}.premium-spinner{border:1.5px solid var(--border);border-top-color:var(--cobalt);border-radius:50%;width:40px;height:40px;animation:1s linear infinite spin}.premium-state-label{color:var(--navy);margin-top:20px;font-family:Cormorant Garamond,serif;font-size:1.25rem;font-weight:300}.premium-error{color:var(--premium-red)}.premium-retry-btn{border:1px solid var(--border-mid);color:var(--navy);text-transform:uppercase;letter-spacing:.14em;cursor:pointer;transition:all var(--dur-fast) var(--ease);background:0 0;margin-top:20px;padding:12px 28px;font-family:DM Sans,sans-serif;font-size:.65rem;font-weight:500}.premium-retry-btn:hover{background:var(--navy);color:var(--surface)}@media (max-width:820px){.premium-root{padding:40px 20px 80px}.premium-header-top{flex-direction:column;align-items:flex-start;gap:24px}.premium-header-stat{text-align:left;width:100%}.premium-modal-hero-gallery{padding:40px 20px}.premium-gallery-strip-expanded{flex-direction:column;gap:28px}.premium-image-wrapper{height:360px}.premium-modal-details-block{padding:36px 24px 44px}.premium-book-info{grid-template-columns:1fr}.premium-info-row{border-right:none;border-bottom:1px solid var(--border)}.premium-info-row:last-child{border-bottom:none}.premium-modal-buttons-horizontal{flex-direction:column;gap:10px}.premium-book-title{font-size:2rem}.premium-pricing-section{padding:24px}}.premium-segregator-nav{justify-content:flex-start;width:100%;max-width:1200px;margin:2.5rem auto;padding:0 1.5rem;display:flex;position:relative}.premium-segregator-track{scroll-behavior:smooth;border-bottom:1px solid #0000000f;gap:1.5rem;width:100%;padding-bottom:.75rem;display:flex;overflow-x:auto}.premium-segregator-track::-webkit-scrollbar{display:none}.premium-segregator-track{-ms-overflow-style:none;scrollbar-width:none}.premium-segregator-tab{cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;outline:none;align-items:center;gap:.5rem;padding:.5rem .25rem;transition:all .3s cubic-bezier(.25,1,.5,1);display:flex;position:relative}.premium-segregator-tab .tab-label{font-family:var(--font-sans,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);letter-spacing:.05em;text-transform:uppercase;color:#666;font-size:.875rem;font-weight:500;transition:color .3s}.premium-segregator-tab .tab-indicator-dot{opacity:0;background-color:#0051c6;border-radius:50%;width:5px;height:5px;transition:transform .3s cubic-bezier(.34,1.56,.64,1),opacity .3s;transform:scale(.5)}.premium-segregator-tab:hover .tab-label{color:#000}.premium-segregator-tab.is-active .tab-label{color:#0051c6;font-weight:600}.premium-segregator-tab.is-active .tab-indicator-dot{opacity:1;transform:scale(1)}.premium-segregator-tab:after{content:"";transform-origin:50%;background-color:#0051c6;width:100%;height:2px;transition:transform .4s cubic-bezier(.25,1,.5,1);position:absolute;bottom:-.8125rem;left:0;transform:scaleX(0)}.premium-segregator-tab.is-active:after{transform:scaleX(1)}.premium-root{color:#111;background-color:#f9f9f9;min-height:100vh;padding-bottom:5rem}.premium-chip{color:#333;letter-spacing:.02em;text-transform:uppercase;background:#fff;border:1px solid #0000000d;padding:.35rem .75rem;font-size:.75rem;font-weight:500}.premium-chip.ghost{color:#0051c6;background:0 0;border:1px solid #0033c626}