@font-face{font-family:Poppins;src:url(/assets/Poppins-Regular-CTKNfV9P.ttf) format("TrueType")}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box;transition:color 20ms,background-color .2s}:root{--bg-primary: #eee;--bg-secondary: #f8f9fa;--color-primary: #7e57c2;--bg-hover: #311b9222;--bg-active: #7e57c2;--text-primary: #000;--text-secondary: #fff;--text-color-active: #fff;--btn-bg-color-hover: #7773;--light-shadow: 0 0 1.4rem #0003;--text-tertiary: #fff;--hero-gradient: linear-gradient(#7e57c291, #7e57c291)}[data-theme=dark]{--bg-primary: #000;--bg-secondary: #333;--bg-hover: #7e57c299;--bg-active: #7e57c2;--text-primary: #fff;--light-shadow: 0 0 1.4rem #fff4;--hero-gradient: linear-gradient(#38235e91, #38235e91)}html{font-size:62.5%}body{font-family:Poppins,sans-serif;color:var(--text-primary);background-color:var(--bg-primary)}a{text-decoration:none;color:inherit}.main{display:flex;flex-direction:column;align-items:stretch;min-height:100vh}.header{background-color:var(--bg-secondary);padding:1.5rem;display:flex;justify-content:space-between;align-items:center}.nav ul{list-style:none;font-size:1.8rem;display:flex;gap:1.2rem}.nav a{display:inline-block;padding:.5rem 1rem;border-radius:.5rem;transition:background-color .2s}.nav a:hover{background-color:var(--bg-hover)}.active{color:var(--text-color-active)!important;background-color:var(--bg-active)!important}.btn{display:flex;gap:.5rem;align-items:center;cursor:pointer}.header__right{display:flex;gap:1rem;align-items:center}.btn-theme{padding:.5rem 1rem;border-radius:.5rem;border:1px solid var(--text-primary);color:var(--text-primary);background-color:transparent;margin-right:1.5rem}.btn-theme:hover{background-color:var(--btn-bg-color-hover)}.btn-theme img{width:2.4rem;height:2.4rem}.header__username{font-size:1.6rem}.btn__login{background-color:var(--color-primary);border:none;padding:.8rem 1.2rem;border-radius:1rem;color:#fff;font-size:1.6rem;transition:filter .2s;display:inline-block;font-family:inherit}.btn__login:hover{filter:brightness(1.1)}.hero__container{background-image:var(--hero-gradient),url(https://polygonhealthanalytics.com/content/images/2025/06/systematic_literature_review.jpeg);color:var(--text-secondary);box-shadow:0 .5rem 1rem var(--color-primary)}.hero{width:65rem;min-height:25rem;padding:5rem;margin:0 auto;font-size:1.8rem;display:flex;flex-direction:column;gap:1rem}.hero h1{font-size:4.2rem;margin-bottom:1rem;text-transform:capitalize}.hero p{font-size:1.6rem;letter-spacing:1px;margin-bottom:3rem}.search-box{width:80%;color:inherit;border:3px solid #999;border-radius:20rem;align-self:center;display:flex;align-items:center;transition:box-shadow .2s,border .2s,backdrop-filter .2s;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.search-box input::placeholder{color:inherit}.search-box:has(input:focus){border:3px solid #fff;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.search-box input{width:100%;padding:1rem 0 1rem 2rem;font-size:2.2rem;background-color:transparent;color:inherit;outline:none;border:none;flex-grow:1}.search-box button{margin-right:2rem;width:32px;height:32px;background-color:transparent;border:none;cursor:pointer}.search-box svg{color:#fff;stroke-width:2px}input[type=search]::-webkit-search-decoration,input[type=search]::-webkit-search-cancel-button,input[type=search]::-webkit-search-results-button,input[type=search]::-webkit-search-results-decoration{display:none}.books__container{max-width:120rem;margin:4rem 0 0;padding:0 2rem;display:grid;grid-template-columns:repeat(4,1fr);gap:2.5rem;align-self:center}.Books__item{padding:1rem 1rem 0;background-color:var(--bg-secondary);border-radius:1rem;box-shadow:var(--light-shadow);display:flex;flex-direction:column;justify-content:space-between;transition:box-shadow .4s}.Books__item img{width:100%;height:34rem;object-fit:contain}.Books__item-content{padding:2rem}.Books__item-content h3{font-size:1.8rem;margin-bottom:1.2rem}.Books__item-content p{font-size:1.5rem;font-weight:700}.Books__item-content span{font-weight:400;opacity:.8}.btn-save{margin-top:2rem;width:100%;background-color:var(--color-primary);border:none;justify-content:center;padding:.8rem 1.2rem;border-radius:22rem;color:#fff;font-size:1.5rem;transition:filter .2s}.btn-save:hover{filter:brightness(1.1)}.btn-save svg{width:2.4rem;height:2.4rem;stroke-width:2px;color:#fff}.saved__book{box-shadow:0 0 1rem 5px var(--color-primary)}.loader{align-self:center;width:8rem;margin-top:2rem;aspect-ratio:2;--_g: no-repeat radial-gradient(circle closest-side, var(--color-primary) 90%, #0000);background:var(--_g) 0% 50%,var(--_g) 50% 50%,var(--_g) 100% 50%;background-size:calc(100% / 3) 50%;animation:l3 1s infinite linear}@keyframes l3{20%{background-position:0% 0%,50% 50%,100% 50%}40%{background-position:0% 100%,50% 0%,100% 50%}60%{background-position:0% 50%,50% 100%,100% 0%}80%{background-position:0% 50%,50% 50%,100% 100%}}.saved__title{max-width:120rem;padding:4rem 2rem 0 4rem;font-size:2.8rem}.footer{margin-top:auto;font-size:1.6rem}.footer__wrapper{margin-top:5rem;padding:1.5rem 3rem;background-color:var(--bg-secondary)}.footer span{font-size:1.8rem}.message{align-self:center;margin-top:3rem;font-size:1.8rem}.sign-up{min-height:100dvh;display:flex;justify-content:center;align-items:center}.sign-up__form{width:35rem;padding:1rem 1.2rem;border-radius:1rem;box-shadow:var(--light-shadow);background-color:var(--bg-secondary)}.sign-up__title{text-align:center;font-size:4.2rem;margin-bottom:1.8rem}.sign-up__input-wrapper{margin-bottom:1rem}.sign-up__label{font-size:1.8rem;margin-bottom:.5rem;display:inline-block}.sign-up__input{width:100%;border:3px solid var(--bg-active);outline:none;border-radius:200rem;padding:1rem 1.5rem;font-size:2.2rem;margin-bottom:1.2rem;background:color-mix(in srgb,var(--bg-active),transparent 95%);color:var(--text-primary)}.sign-up__input:focus{background:color-mix(in srgb,var(--bg-active),transparent 80%)}.sign-up__submit-btn{width:100%;color:var(--text-primary);font-size:2.2rem;background-color:color-mix(in srgb,var(--bg-active),transparent 70%);border:3px solid var(--color-primary);cursor:pointer;padding:.8rem 1.5rem;border-radius:200rem;margin-top:1rem}.sign-up__paragraph{margin-top:1rem;font-size:1.4rem}.sign-up__link{color:#1976d2;text-decoration:underline}@media screen and (max-width: 1200px){.books__container{max-width:99.2rem;grid-template-columns:repeat(3,1fr)}.saved__title{max-width:99.2rem}}@media screen and (max-width: 950px){.books__container{max-width:70rem;grid-template-columns:repeat(2,1fr)}.saved__title{max-width:70rem}}@media screen and (max-width: 700px){.books__container{max-width:40rem;grid-template-columns:repeat(1,1fr)}.hero{width:100%}.saved__title{max-width:40rem}}