:root{--brand-gradient:linear-gradient(135deg, #6c3fc5 0%, #3b82f6 100%);--brand-purple:#6c3fc5;--brand-blue:#3b82f6}body{min-height:100vh;background:linear-gradient(160deg,#f0ebff 0%,#e8f0ff 100%)!important}.app-navbar{background:var(--brand-gradient)!important;border-bottom:none!important}.app-navbar .text-muted{color:#ffffffd9!important}.app-navbar .badge{font-size:.7rem}.page-header{background:var(--brand-gradient);color:#fff;border-radius:16px;margin-bottom:1.5rem;padding:1.5rem 2rem;box-shadow:0 4px 20px #6c3fc540}.page-header h1{color:#fff;margin:0}.page-header .btn-add{color:var(--brand-purple);background:#fff;border:none;border-radius:10px;font-weight:600}.page-header .btn-add:hover{color:var(--brand-purple);background:#f0ebff}.book-item{margin-bottom:.5rem;transition:transform .15s,box-shadow .15s;box-shadow:0 2px 8px #00000012;background:#fff!important;border:none!important;border-radius:12px!important}.book-item:hover{transform:translateY(-2px);box-shadow:0 6px 20px #6c3fc526}.badge-available{text-transform:lowercase;color:#1e3a6e!important;background:#a2bdf5!important}.badge-rented{text-transform:lowercase;color:#7c3a10!important;background:#f5c4a2!important}.filter-bar .form-control,.filter-bar .form-select{border-color:#d8b4fe;border-radius:10px}.filter-bar .form-control:focus,.filter-bar .form-select:focus{border-color:var(--brand-purple);box-shadow:0 0 0 .2rem #6c3fc533}.login-bg{background:var(--brand-gradient);min-height:100vh}.login-card{border:none!important;border-radius:20px!important;box-shadow:0 20px 60px #0003!important}.login-card .nav-link.active{font-weight:600;color:var(--brand-purple)!important;border-bottom-color:var(--brand-purple)!important}.login-card .btn-primary{background:var(--brand-gradient);border:none;border-radius:10px;padding:.6rem;font-weight:600}.login-card .btn-primary:hover{opacity:.9}.login-card .form-control{border-color:#d8b4fe;border-radius:10px}.login-card .form-control:focus{border-color:var(--brand-purple);box-shadow:0 0 0 .2rem #6c3fc533}