@import url('https://fonts.googleapis.com/css2?family=Bree+Serif&display=swap');
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    font-family: 'Bree Serif', serif;
    font-weight: 400;
    font-style: normal;
}
*::-webkit-scrollbar {
    width: .7rem;
    height: .7rem;
}
*::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 1rem;
}
*:hover::-webkit-scrollbar-thumb {
    background: var(--text-color);
}
:root {
    --bg-color: #d6e1ff;
    --second-bg-color: #1d2e62;
    --main-color: #435db1;
    --text-color: #141726;
    --disabled-color: #fff7;
    --error-color: #dc3545;
    --warning-color: #ffa500;
    --success-color: #28a745;
}
html {
    font-size: 62.5%;
}
body {
    height: 100vh;
    background-image: url('../images/home-background.png');
    background-size: cover;
    background-position: center;
}
section {
    position: fixed;
    width: 100%;
    height: 93%;
    padding: 15rem 4% 2rem;
    visibility: hidden;
    opacity: 0;
    overflow: hidden;
}
section.active {
    visibility: visible;
    opacity: 1;
    overflow-y: auto;
    animation: transition .3s;
}
button {
    display: inline-block;
    padding: 1rem 3rem;
    background: var(--main-color);
    border: .2rem solid var(--main-color);
    border-radius: 1rem;
    box-shadow: 0 0 1rem var(--main-color);
    font-size: 1.6rem;
    color: var(--bg-color);
    font-weight: 500;
    transition: .5s;
    cursor: pointer;
}
button:hover {
    background: transparent;
    color: var(--main-color);
    box-shadow: none;
}
input[type='date'] {
    height: 4.7rem;
}
/*<!-- header -->*/
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 7%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--text-color);
    z-index: 100;
}
.logo-header {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.logo-img {
    border-radius: 50%;
    width: 5rem;
}
.logo {
    font-size: 3rem;
    color: var(--bg-color);
    font-weight: 700;
}
navigation a {
    font-size: 2rem;
    color: var(--bg-color);
    font-weight: 500;
    margin-left: 3.5rem;
    transition: .5s;
}
navigation a:hover, navigation a.active {
    color: var(--main-color);
}
#menu-icon {
    font-size: 4rem;
    color: var(--text-color);
    display: none;
}
.success {
    display: none;
    color: var(--success-color);
    background-color: lightgreen;
    font-size: 1.6rem;
    padding: 1rem;
    text-align: left;
}
.display-success {
    display: block;
}
.blunder {
    display: none;
    color: var(--error-color);
    background-color: lightcoral;
    font-size: 1.6rem;
    padding: 1rem;
    text-align: left;
}
.display-blunder {
    display: block;
}
/*<!-- home section -->*/
.home-detail {
    box-shadow: 0 0 1rem var(--disabled-color);
    background: var(--disabled-color);
    padding: 2.5rem;
    border-radius: 1rem;
}
.home-detail h1 {
    font-size: clamp(3.5rem, 10vw, 5.5rem);
    color: var(--main-color);
}
.home-detail h2 {
    display: inline-block;
    font-size: 3.2rem;
    color: var(--text-color);
    margin: 2rem 0;
}
.home-detail p {
    font-size: 1.6rem;
    margin: 2rem 0 2.5rem;
    color: var(--text-color);
}
.home-detail .sci {
    display: flex;
    align-items: center;
    margin: 2rem 0;
}
.sci i {
    display: inline-flex;
    box-shadow: 0 0 1rem var(--disabled-color);
    background: var(--disabled-color);
    color: var(--main-color);
    font-size: 3rem;
    padding: 1.2rem;
    border-radius: .6rem;
    margin-right: 1.5rem;
}
/*<!-- contact section -->*/
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}
.contact-box h2 {
    font-size: 4.5rem;
    color: var(--main-color);
}
.contact-box p:not(.success, .blunder) {
    font-size: 1.6rem;
    color: var(--text-color);
    text-align: left;
}
.contact-box .desc {
    margin: 2rem 0 2rem;
}
.contact-box .contact-detail {
    display: flex;
    align-items: center;
    margin: 2rem 0;
}
.contact-detail i {
    display: inline-flex;
    box-shadow: 0 0 1rem var(--disabled-color);
    background: var(--disabled-color);
    color: var(--main-color);
    font-size: 3rem;
    padding: 1.2rem;
    border-radius: .6rem;
    margin-right: 1.5rem;
}
.contact-detail .detail p:first-child {
    color: var(--main-color);
    font-weight: bold;
}
.contact-box form {
    box-shadow: 0 0 1rem var(--disabled-color);
    background: var(--disabled-color);
    padding: 2.5rem;
    border-radius: 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.contact-box .contact-header {
    font-size: 4.5rem;
}
.contact-box .field-box {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
.contact-box .field-box .input-box {
    position: relative;
    font-size: 1.6rem;
}
.contact-box .field-box .input-box input {
    width: 100%;
    height: 4rem;
    padding: 1rem 1rem 1rem 4rem;
    border: .15rem solid var(--bg-color);
    border-radius: .6rem;
    font-size: 1.6rem;
    color: var(--text-color);
}
.contact-box .field-box input:focus {
    border-color: var(--main-color);
}
.contact-box .field-box .input-box i {
    position: absolute;
    top: 50%;
    left: 1.5rem;
    transform: translateY(-50%);
    color: var(--main-color);
    display: flex;
}
.contact-box .btn {
    cursor: pointer;
    width: 100%;
}
/*<!-- login section -->*/
.login {
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-box, .forgot-box, .change-box {
    display: none;
}
.login-box.active, .forgot-box.active, .change-box.active {
    display: block;
    animation: translation .3s;
}
.login-box h2, .forgot-box h2, .change-box h2 {
    font-size: 4.5rem;
    color: var(--main-color);
}
.login-box .desc, .forgot-box .desc, .change-box .desc {
    font-size: 1.6rem;
    color: var(--text-color);
    text-align: left;
    margin: 2rem 0 2rem;
}
.field-box a {
    font-size: 1.6rem;
    color: var(--main-color);
    text-decoration: underline;
    text-align: left;
}
.login-box form, .forgot-box form, .change-box form {
    box-shadow: 0 0 1rem var(--disabled-color);
    background: var(--disabled-color);
    padding: 2.5rem;
    border-radius: 1rem;
    text-align: center;
    width: 47.5rem;
}
.login-box .login-header, .forgot-box .login-header, .change-box .login-header {
    font-size: 4.5rem;
}
.login-box .field-box, .forgot-box .field-box, .change-box .field-box {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}
.login-box .field-box .input-box, .forgot-box .field-box .input-box, .change-box .field-box .input-box {
    position: relative;
    font-size: 1.6rem;
}
.login-box .field-box .input-box input, .forgot-box .field-box .input-box input, .change-box .field-box .input-box input {
    width: 100%;
    padding: 1rem 1rem 1rem 4rem;
    border: .15rem solid var(--bg-color);
    border-radius: .6rem;
    font-size: 1.6rem;
    color: var(--text-color);
}
.login-box .field-box input:focus, .forgot-box .field-box .input-box input:focus, .change-box .field-box .input-box input:focus {
    border-color: var(--main-color);
}
.login-box .field-box .input-box i, .forgot-box .field-box .input-box i, .change-box .field-box i {
    position: absolute;
    top: 50%;
    left: 1.5rem;
    transform: translateY(-50%);
    color: var(--main-color);
    display: flex;
}
.login-box .btn, .forgot-box .btn, .change-box .btn {
    margin-top: 2rem;
    cursor: pointer;
    width: 100%;
}
/*<!-- animation -->*/
@keyframes transition {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
@keyframes translation {
    from {
        transform: translateX(1rem);
    }
    to {
        transform: translateX(0);
    }
}
/*<!-- footer -->*/
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem 1%;
    z-index: 100;
    display: flex;
    flex-direction: row-reverse;
}
.footer-text {
    font-size: 1.6rem;
    color: var(--text-color);
    display: flex;
    gap: 3rem;
}
/*<!-- responsive breakpoints -->*/
@media only screen and (min-device-width : 320px) and (max-device-width : 480px) {
    html {
        font-size: 100%;
    }
    .contact-container {
        grid-template-columns: 1fr;
    }
    .contact-box .field-box {
        grid-template-columns: 1fr;
    }
    #menu-icon {
        display: block;
        color: var(--bg-color);
    }
    navigation {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--text-color);
        border-top: .1rem solid rgba(0, 0, 0, .2);
        text-align: center;
        display: none;
    }
    navigation.active {
        display: block;
        padding-bottom: 3rem;
        animation: transition .3s;
    }
    navigation a {
        display: block;
        margin: 2rem;
    }
    header {
        padding: 2rem 4%;
    }
    section {
        overflow-x: auto;
    }
}
@media only screen and (min-width : 1824px) {
    html {
        font-size: 55%;
    }
    section {
        padding: 15rem 9%;
    }
}