:root{--primary:#2563eb;--bottom-nav-height:65px}
body{font-family:'Segoe UI',system-ui,sans-serif;padding-bottom:var(--bottom-nav-height)}
.main-content{min-height:calc(100vh - 200px)}
.hero-slider{border-radius:0;overflow:hidden}
.hero-banner{height:280px;object-fit:cover}
@media(min-width:768px){.hero-banner{height:400px}}
.hero-caption{background:rgba(0,0,0,.55)!important;border-radius:8px;padding:20px!important;bottom:30px!important;left:50%;transform:translateX(-50%);width:90%;max-width:600px;text-align:center}
.carousel-indicators [data-bs-target]{width:10px;height:10px;border-radius:50%}
.book-cover{height:220px;object-fit:contain;background:#f8f9fa}
.book-card{transition:transform .2s,box-shadow .2s}
.book-card:hover{transform:translateY(-4px);box-shadow:0 8px 25px rgba(0,0,0,.1)!important}
.text-truncate-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.section-title{font-weight:600;border-left:4px solid var(--primary);padding-left:12px}
.condition-badge{font-size:.7rem}
.book-main-image{max-height:450px;object-fit:contain;cursor:zoom-in}
.mobile-bottom-nav{position:fixed;bottom:0;left:0;right:0;height:var(--bottom-nav-height);background:#fff;border-top:1px solid #dee2e6;display:flex;justify-content:space-around;align-items:center;z-index:1050;box-shadow:0 -2px 10px rgba(0,0,0,.08)}
.mobile-nav-item{display:flex;flex-direction:column;align-items:center;text-decoration:none;color:#6c757d;font-size:.7rem;position:relative;padding:4px 8px}
.mobile-nav-item i{font-size:1.3rem}
.mobile-nav-item.active,.mobile-nav-item:hover{color:var(--primary)}
.mobile-badge{position:absolute;top:0;right:0;background:#dc3545;color:#fff;font-size:.6rem;border-radius:50%;width:16px;height:16px;display:flex;align-items:center;justify-content:center}
@media(min-width:768px){body{padding-bottom:0}.main-content{padding-bottom:0}}
.category-card:hover .bg-light{background:#e7f1ff!important}