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var(--border-medium);border-radius:12px;color:var(--text-muted);text-align:center;font-size:14px;background-color:var(--bg-surface)}.community-band{display:flex;align-items:center;gap:18px;padding:24px 28px;margin:48px 0 36px;border:1px solid var(--border-medium);border-radius:12px;background:linear-gradient(135deg,var(--brand-lighter) 0%,var(--bg-surface) 100%);box-shadow:var(--card-shadow)}.community-icon{display:grid;place-items:center;width:50px;height:50px;flex-shrink:0;border-radius:12px;color:#fff;background:var(--brand-gradient);box-shadow:0 4px 12px #018f834d}.community-band .eyebrow{margin-bottom:4px;color:var(--school-red)}.community-band h3{margin-bottom:4px;color:var(--text-main);font-family:Playfair Display,serif;font-size:21px}.community-band p:last-child{margin-bottom:0;color:var(--text-muted);font-size:12px}.outline-button{display:inline-flex;align-items:center;gap:8px;margin-left:auto;padding:10px 18px;border:1px solid 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var(--border-medium);border-radius:14px;background-color:var(--bg-card);box-shadow:0 25px 60px #00000059;color:var(--text-main);animation:modalEnter .2s ease-out}@keyframes modalEnter{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}.modal-close{position:absolute;top:18px;right:18px;padding:6px;border-radius:50%;border:0;background:transparent;color:var(--text-faint);display:flex;align-items:center;justify-content:center;transition:all .2s ease}.modal-close:hover{background-color:var(--brand-light);color:var(--brand-teal)}.exit-button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;padding:0;flex-shrink:0;border:1px solid var(--border-medium);border-radius:50%;background-color:var(--bg-surface);color:var(--text-muted);box-shadow:var(--card-shadow);transition:all .2s ease}.exit-button:hover{color:var(--brand-teal);border-color:var(--brand-teal);background-color:var(--brand-light);transform:translateY(-1px)}.sidebar-close{display:none}.profile-menu-close{position:absolute;top:10px;right:10px;width:28px;height:28px;box-shadow:none}.modal-heading{display:flex;align-items:center;gap:14px;margin-bottom:14px}.modal-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:10px;color:#fff;background:var(--brand-gradient);flex-shrink:0}.modal-heading .eyebrow{margin-bottom:3px;color:var(--school-red)}.modal-heading h2{font-size:24px;color:var(--text-main)}.modal-intro{max-width:460px;margin-bottom:22px;color:var(--text-muted);font-size:13px;line-height:1.6}.submission-form{display:flex;flex-direction:column;gap:15px}.submission-form label{display:flex;flex-direction:column;gap:6px;color:var(--text-secondary);font-size:12px;font-weight:600}.submission-form input,.submission-form select,.submission-form textarea{width:100%;padding:10px 12px;border:1px solid var(--border-medium);border-radius:6px;outline:none;color:var(--text-main);background-color:var(--bg-surface);font-size:13px;font-weight:400;transition:border-color .2s,box-shadow .2s}.submission-form input:focus,.submission-form select:focus,.submission-form textarea:focus{border-color:var(--brand-teal);box-shadow:0 0 0 3px #018f832e}.submission-form textarea{resize:vertical;line-height:1.5}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.price-input{position:relative}.price-input span{position:absolute;left:12px;top:10px;color:var(--text-faint);font-size:13px;font-weight:500}.price-input input{padding-left:28px}.upload-box{display:flex;align-items:center;gap:10px;min-height:56px;padding:10px 14px;border:1px dashed var(--border-medium);border-radius:8px;color:var(--text-muted);background-color:var(--bg-surface);cursor:pointer}.upload-box span{color:var(--text-secondary);font-weight:500}.upload-box small{color:var(--text-faint);font-size:10px;margin-left:auto}.cover-palette-picker{display:flex;gap:8px;margin-top:4px}.palette-btn{width:28px;height:28px;border-radius:6px;border:2px solid transparent;cursor:pointer;transition:transform .15s,border-color .15s}.palette-btn:hover{transform:scale(1.1)}.palette-selected{border-color:#fff;outline:2px solid var(--brand-teal);transform:scale(1.1)}.submit-button{width:100%;margin-top:6px;padding:12px}.form-footnote{display:flex;align-items:center;justify-content:center;gap:6px;margin:-4px 0 0;color:var(--text-faint);font-size:11px}.auth-error{margin:-4px 0 0;color:#ef4444;font-size:12px}.auth-switch{padding:4px 0;border:0;color:var(--brand-teal);background:none;font-size:12px;font-weight:500;text-align:center}.book-detail-grid{display:grid;grid-template-columns:180px 1fr;gap:24px;margin-bottom:20px}.book-detail-cover{height:240px;border-radius:10px;display:flex;flex-direction:column;padding:18px;color:#fff;position:relative;overflow:hidden;box-shadow:0 8px 24px #0003}.book-detail-cover strong{font-family:Playfair Display,serif;font-size:20px;margin-top:14px;line-height:1.1}.book-detail-meta{display:flex;flex-direction:column}.book-detail-title{font-family:Playfair Display,serif;font-size:24px;margin-bottom:4px;color:var(--text-main)}.book-detail-author{color:var(--text-muted);font-size:13px;margin-bottom:12px}.book-detail-tags{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}.detail-badge{padding:4px 10px;border-radius:6px;font-size:11px;font-weight:600;background-color:var(--brand-light);color:var(--brand-teal);border:1px solid var(--border-medium)}.book-detail-desc{font-size:13px;line-height:1.6;color:var(--text-secondary);margin-bottom:16px;padding:12px;border-radius:8px;background-color:var(--bg-surface);border:1px solid var(--border-subtle)}.book-detail-seller{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-muted);margin-bottom:16px}.book-detail-seller strong{color:var(--text-main)}.book-detail-actions{display:flex;gap:12px;margin-top:auto}.success-message{padding:24px 12px 10px;text-align:center}.success-check{display:grid;place-items:center;width:60px;height:60px;margin:0 auto 18px;border-radius:50%;color:#fff;background:var(--brand-gradient);box-shadow:0 0 0 8px var(--brand-light)}.success-message .eyebrow{justify-content:center;color:var(--brand-teal)}.success-message h2{margin-bottom:10px;font-size:28px}.success-message>p:not(.eyebrow){max-width:340px;margin:0 auto 24px;color:var(--text-muted);font-size:13px;line-height:1.6}.success-message .primary-button{margin:auto}.welcome-overlay{position:fixed;z-index:60;inset:0;display:grid;place-items:center;padding:20px;background:var(--modal-backdrop);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.welcome-card{position:relative;width:min(100%,520px);padding:40px 44px 34px;border:1px solid var(--border-medium);border-radius:16px;background-color:var(--bg-card);box-shadow:0 25px 70px #0006;text-align:center;color:var(--text-main)}.welcome-close{position:absolute;top:14px;right:14px}.welcome-card-crest{width:105px;height:105px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.welcome-card-crest img{max-width:100%;max-height:100%;width:auto;height:auto;aspect-ratio:1269 / 1239;-o-object-fit:contain;object-fit:contain;display:block;filter:drop-shadow(0 8px 16px rgba(1,143,131,.2));image-rendering:-webkit-optimize-contrast}.welcome-card .eyebrow{justify-content:center;margin-bottom:10px;color:var(--school-red)}.welcome-card h2{margin-bottom:14px;font-size:40px;line-height:1.1}.welcome-card>p:not(.eyebrow){max-width:360px;margin:0 auto 26px;color:var(--text-muted);font-size:13px;line-height:1.7}.welcome-actions{display:flex;justify-content:center;align-items:center;gap:16px}.welcome-login{display:inline-flex;align-items:center;gap:7px;padding:11px 16px;border:1px solid var(--border-medium);border-radius:8px;color:var(--brand-teal);background:var(--bg-surface);font-size:13px;font-weight:600;transition:all .2s ease}.welcome-login:hover{background:var(--brand-light);border-color:var(--brand-teal)}.welcome-note{display:flex;justify-content:center;align-items:center;gap:6px;margin-top:24px;color:var(--text-faint);font-size:11px}.toast-pill{position:fixed;bottom:24px;right:24px;z-index:100;display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:30px;background:var(--brand-gradient);color:#fff;font-size:13px;font-weight:600;box-shadow:0 10px 25px #018f8366;animation:toastSlideUp .25s ease-out}@keyframes toastSlideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media(max-width:1020px){.main-content{padding:0 4%}.hero-art{margin-right:0;width:220px;height:220px}.art-circle{width:200px;height:200px}.hero-art-crest{width:140px;height:140px}.book-grid{grid-template-columns:repeat(2,1fr);gap:16px 14px}.requests-board{grid-template-columns:1fr}}@media(max-width:768px){.sidebar-close{display:inline-flex;position:absolute;top:16px;right:14px}.sidebar{position:fixed;z-index:40;top:0;bottom:0;left:0;transform:translate(-100%);transition:transform .25s ease;box-shadow:8px 0 30px #0000004d}.sidebar-open{transform:translate(0)}.main-content{padding:0 clamp(12px,3.5vw,20px)}.topbar{height:clamp(58px,12vw,70px)}.mobile-menu{display:block;border:0;background:none;color:var(--text-main);padding:6px;margin-right:4px}.crumb{font-size:clamp(10px,2.5vw,12px)}.profile-name{display:none}.hero-section{min-height:auto;padding:clamp(22px,6vw,36px) 0 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h2{font-size:clamp(20px,5.2vw,28px)}.collection-meta{width:100%;justify-content:space-between;font-size:clamp(10px,2.6vw,12px)}.community-band{align-items:flex-start;flex-wrap:wrap;padding:clamp(16px,4vw,22px);gap:12px}.outline-button{margin-left:0;width:100%;justify-content:center}.page-footer{gap:16px;flex-direction:column}.book-detail-grid{grid-template-columns:1fr;gap:16px}.book-detail-cover{height:clamp(150px,40vw,200px)}}@media(max-width:640px){.search-container{margin-bottom:clamp(18px,4vw,26px)}.search-panel{flex-direction:column;align-items:stretch;padding:8px 10px;gap:6px;border-radius:10px}.search-input-wrap{padding:2px 4px;gap:8px}.search-input-wrap input{font-size:clamp(12px,3vw,13px);padding:6px 0}.filter-wrap{border-left:0;border-top:1px solid var(--border-subtle);padding:6px 4px 2px;min-width:0;width:100%;font-size:11px;justify-content:flex-start}.filter-wrap select{font-size:11.5px;width:100%}.genre-chips{gap:6px;padding-bottom:4px;-webkit-overflow-scrolling:touch;scrollbar-width:none}.genre-chips::-webkit-scrollbar{display:none}.genre-chip{font-size:clamp(10px,2.8vw,11.5px);padding:clamp(4px,1.2vw,6px) clamp(9px,2.6vw,13px);flex-shrink:0}.modal-overlay{padding:10px}.modal-card{width:100%;max-width:100%;max-height:90vh;padding:clamp(18px,5vw,26px) clamp(14px,4vw,20px);border-radius:14px}.modal-head h2{font-size:clamp(18px,5vw,24px)}.form-row{grid-template-columns:1fr;gap:12px}.submission-form input,.submission-form select,.submission-form textarea{font-size:13px;padding:9px 12px}}@media(max-width:500px){.hero-art{display:none}.hero-copy{width:100%}h1{font-size:clamp(24px,6.8vw,32px)}.topbar{gap:6px}.crumb{flex:1 1 auto;min-width:0;flex-direction:column;align-items:flex-start;gap:0;font-size:10px;line-height:1.25}.crumb-slash{display:none}.crumb>span:first-child,.crumb strong{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.crumb strong{font-size:11px}.top-actions{flex-shrink:0;gap:6px}.theme-toggle-btn{width:34px;height:34px;padding:0;border-radius:50%}.theme-toggle-btn span{display:none}.icon-button{width:34px;height:34px}.profile-button{padding:4px;border-radius:50%}.profile-button svg{display:none}.hero-action-crest{display:block;width:clamp(48px,14vw,62px);height:clamp(48px,14vw,62px);padding:3px}.hero-actions{flex-direction:column;gap:8px}.hero-actions .primary-button,.hero-actions .text-button{width:100%;justify-content:center;min-height:42px}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(10px,3vw,14px) clamp(8px,2.5vw,12px)}.book-card{border-radius:10px}.book-cover{height:clamp(118px,32vw,146px);margin:clamp(5px,1.6vw,7px) clamp(5px,1.6vw,7px) 0;padding:clamp(9px,2.6vw,13px);border-radius:7px}.book-cover:after{right:-24px;bottom:-32px;width:90px;height:90px;box-shadow:0 0 0 8px #ffffff14,0 0 0 16px #ffffff0d}.cover-kicker{font-size:clamp(5.5px,1.7vw,7px);letter-spacing:.1em}.cover-rule{width:clamp(18px,5.5vw,24px);height:1.5px;margin-top:clamp(3px,1.2vw,6px)}.book-cover strong{max-width:100%;margin-top:clamp(5px,1.6vw,8px);font-size:clamp(12.5px,3.5vw,15px);line-height:1.1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.book-cover small{font-size:clamp(7.5px,2.1vw,8.5px);line-height:1.2}.cover-seal{right:clamp(6px,2vw,9px);top:clamp(6px,2vw,9px);width:clamp(18px,5vw,22px);height:clamp(18px,5vw,22px)}.cover-seal svg{width:clamp(9px,2.7vw,11px);height:clamp(9px,2.7vw,11px)}.book-info{padding:clamp(7px,2vw,10px) clamp(7px,2vw,10px) clamp(9px,2.4vw,11px)}.book-genre{font-size:clamp(7.5px,2.1vw,8.5px);letter-spacing:.04em}.heart-card{padding:2px}.heart-card svg{width:clamp(11px,3.2vw,13px);height:clamp(11px,3.2vw,13px)}.book-info h3{margin:4px 0 2px;font-size:clamp(11.5px,3.2vw,13px);line-height:1.22}.author{margin-bottom:6px;font-size:clamp(8px,2.3vw,9.5px)}.book-bottom{gap:4px;align-items:center}.rating{font-size:clamp(8px,2.3vw,9.5px);gap:2px}.rating svg{width:clamp(9px,2.4vw,10px);height:clamp(9px,2.4vw,10px)}.rating span{margin-left:1px}.price{font-size:clamp(11px,3.1vw,12.5px);font-weight:700}.trade-label{padding:2px clamp(3px,1.2vw,5px);border-radius:4px;font-size:clamp(6.5px,1.9vw,8px);letter-spacing:.02em;white-space:nowrap}.welcome-overlay{padding:clamp(10px,3.5vw,16px)}.welcome-card{padding:clamp(24px,6vw,32px) clamp(16px,4.5vw,22px) clamp(20px,5.5vw,26px);border-radius:16px}.welcome-card-crest{width:clamp(65px,18vw,85px);height:clamp(65px,18vw,85px)}.welcome-card h2{font-size:clamp(22px,6.5vw,30px);margin-bottom:8px}.welcome-card p{font-size:clamp(11.5px,3vw,13.5px);line-height:1.55;margin-bottom:20px}.welcome-actions{flex-direction:column;gap:8px;width:100%}.welcome-actions button{width:100%;justify-content:center;min-height:44px}}@media(max-width:360px){.main-content{padding:0 9px}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 6px}.book-cover{height:110px;margin:4px 4px 0;padding:8px}.book-cover strong{font-size:11.5px;margin-top:4px}.cover-seal{width:16px;height:16px;top:5px;right:5px}.cover-seal svg{width:8px;height:8px}.book-bottom{flex-direction:column;align-items:flex-start;gap:3px}}.topbar-logout-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:9999px;border:1px solid var(--border-medium);background:var(--bg-surface);color:var(--school-red, #E45D61);font-size:13px;font-weight:600;cursor:pointer;transition:all .18s ease}.topbar-logout-btn:hover{background:#fdeced;border-color:var(--school-red, #E45D61);transform:translateY(-1px)}[data-theme=dark] .topbar-logout-btn{background:#e45d611a;border-color:#e45d614d}[data-theme=dark] .topbar-logout-btn:hover{background:#e45d6133}.topbar-login-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:9999px;border:1px solid var(--brand-teal);background:var(--brand-teal);color:#fff;font-size:13px;font-weight:600;cursor:pointer;transition:all .18s ease;box-shadow:0 2px 6px #018f8333}.topbar-login-btn:hover{background:var(--brand-teal-dark, #026b62);border-color:var(--brand-teal-dark, #026b62);transform:translateY(-1px)}[data-theme=dark] .topbar-login-btn{background:var(--brand-teal);border-color:var(--brand-teal);color:#fff}[data-theme=dark] .topbar-login-btn:hover{background:#03a89a;border-color:#03a89a}.profile-student-badge{display:inline-block;margin-top:4px;padding:2px 8px;font-size:11px;font-weight:600;border-radius:6px;background:var(--brand-lighter, #f0faf8);color:var(--brand-teal, #018F83);border:1px solid var(--border-subtle)}.dev-feedback-corner{margin-top:36px;padding:28px;border-radius:18px;background:var(--bg-card);border:1.5px 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12px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--text-main);font-size:13.5px;font-family:inherit;transition:border-color .18s ease}.dev-feedback-form input:focus,.dev-feedback-form select:focus,.dev-feedback-form textarea:focus{outline:none;border-color:var(--brand-teal);box-shadow:0 0 0 3px #018f832e}.dev-feedback-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}.dev-feedback-footer-text{font-size:12px;color:var(--text-muted)}.login-page-wrapper{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px;background:radial-gradient(circle at 10% 20%,rgba(1,143,131,.08) 0%,transparent 40%),radial-gradient(circle at 90% 80%,rgba(228,93,97,.06) 0%,transparent 40%),var(--bg-app)}.login-card{width:100%;max-width:460px;padding:34px 28px;border-radius:22px;background:var(--bg-card);border:1.5px solid var(--border-subtle);box-shadow:var(--card-shadow-hover);display:flex;flex-direction:column;gap:20px}.login-header{text-align:center;display:flex;flex-direction:column;align-items:center}.login-crest-wrap{width:58px;height:58px;border-radius:16px;background:var(--brand-gradient);display:flex;align-items:center;justify-content:center;margin-bottom:12px;box-shadow:var(--brand-glow)}.login-school-tag{font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-teal);margin-bottom:4px}.login-title{margin:0 0 6px;font-size:26px;font-family:Playfair Display,serif;color:var(--text-main)}.login-subtitle{margin:0;font-size:13px;color:var(--text-muted);line-height:1.45}.login-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;padding:4px;border-radius:12px;background:var(--bg-surface-hover, #f0f8f7);border:1px solid var(--border-subtle)}.login-forgot-link{background:none;border:none;color:var(--brand-teal);font-size:11.5px;font-weight:600;cursor:pointer;padding:0;text-decoration:underline;transition:opacity .15s ease}.login-forgot-link:hover{opacity:.8}.login-tab{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 8px;border-radius:9px;border:none;background:transparent;color:var(--text-muted);font-size:12.5px;font-weight:600;cursor:pointer;transition:all .16s ease;white-space:nowrap}.login-tab-active{background:var(--bg-surface);color:var(--brand-teal);box-shadow:0 2px 6px #13272414}.login-form{display:flex;flex-direction:column;gap:14px}.login-label{display:flex;flex-direction:column;gap:5px;font-size:12.5px;font-weight:600;color:var(--text-secondary)}.login-input-wrap{position:relative;display:flex;align-items:center}.login-input-icon{position:absolute;left:12px;color:var(--text-muted);pointer-events:none}.login-input{width:100%;padding:10px 12px 10px 36px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--text-main);font-size:13.5px;font-family:inherit;transition:all .18s ease}.login-input:focus{outline:none;border-color:var(--brand-teal);box-shadow:0 0 0 3px #018f832e}.login-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer}.login-row{display:flex;gap:10px}.login-error{margin:0;padding:8px 12px;border-radius:8px;background:#fdeced;color:var(--school-red, #E45D61);font-size:12.5px;font-weight:500}.login-success{margin:0;padding:10px 14px;border-radius:8px;background:#e8f5f3;color:var(--brand-teal, #018F83);border:1px solid rgba(1,143,131,.3);font-size:13px;font-weight:500;display:flex;align-items:center;gap:8px}[data-theme=dark] .login-success{background:#018f8329;border-color:#018f8366;color:#2dd4bf}.login-submit-btn{width:100%;justify-content:center;padding:12px 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ease}.guest-explore-btn:hover{background:var(--border-subtle);color:var(--brand-teal)}@media(max-width:640px){.dev-feedback-grid{grid-template-columns:1fr}.dev-action-buttons{width:100%;justify-content:stretch}.dev-action-buttons button,.dev-action-buttons a{flex:1;justify-content:center}.login-card{padding:24px 18px}.login-tabs{grid-template-columns:1fr}}.auth-loading-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px;background:radial-gradient(circle at 10% 20%,rgba(1,143,131,.08) 0%,transparent 40%),radial-gradient(circle at 90% 80%,rgba(228,93,97,.06) 0%,transparent 40%),var(--bg-app)}.auth-loading-card{width:100%;max-width:380px;padding:36px 28px;border-radius:22px;background:var(--bg-card);border:1.5px solid 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