/* #VARIABLE */

:root {

    /* colors */

    --light-grayish-blue: hsl(240, 9%, 96%);
    --very-light-gray:    hsl(0, 0%, 97%);
    --grayish-blue:       hsl(233, 8%, 62%);
    --bright-cyan:        hsl(192, 70%, 51%);
    --lime-green:         hsl(136, 65%, 51%);
    --dark-blue:          hsl(233, 26%, 24%);
    --white:              hsl(0, 0%, 100%);

    /* spacing */

    --px: 20px;
}

/* #RESET */

*, *::before, *::after {
    margin:  0;
    padding: 0;
    box-sizing: border-box;
}

li { list-style: none; }

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: none;
    background: none;
    font: inherit;
    cursor: pointer;
}

html {
  font-family: 'Public Sans', sans-serif;
  scroll-behavior: smooth;
}

img, span, svg { display: block; }

nav img.logo {
    padding: 0;
}

/* #MAIN */

.container {
    max-width: 1440px;
    margin: auto;
}

/* #HEADER */

header {
    position: fixed;
    top:  0;
    left: 0;
    width: 100%;
    z-index: 10;
}

.navbar {
    font-size: 16px;
    background: var(--white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--px);
}

.navbar-toggle-btn {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0 20px;
}

.navbar-toggle-btn span {
    display: block;
    background: var(--dark-blue);
    width: 25px;
    height: 1px;
    transition: 0.25s ease;
}

.navbar-toggle-btn.active .one { 
    transform: rotate(45deg) translateY(3px); 
}
.navbar-toggle-btn.active .two { 
    display: none; 
}
.navbar-toggle-btn.active .three { 
    transform: rotate(-45deg) translateY(-3px); 
}

.navbar div.navbar-logos {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    gap: 10px;
    height: 80px;
    width: 288.38px;
}

.navbar div.navbar-logos img.logo {
    display: block;
    margin-top: 10px;
    margin-bottom: 10px;
}

.navbar-nav {
    position: fixed;
    background: var(--white);
    top: 60px;
    left: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 20px 0;
    border-radius: 5px;
    z-index: -1;
    opacity: 0;
    transition: 0.5s ease-in-out;
    pointer-events: none;
}

.navbar-nav a {
    color: var(--dark-blue);
    display: block;
}

.navbar-nav.active {
    width: 100px;
    left: calc(100% - 105px);
    top: calc(60px + 25px);
    opacity: 1;
    box-shadow: 0 0 100px 100px hsla(233, 26%, 24%, 0.2);
    pointer-events: all;
}

.btn-primary {
    background: linear-gradient(90deg, var(--lime-green), var(--bright-cyan));
    color: var(--white);
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 700;
    display: block;
    margin: auto;
    transition: 0.25s ease;
}

.btn-primary:hover { 
    opacity: 0.7; 
}

.navbar .btn-primary { 
    display: none; 
}

/* #HOME */

main { 
    overflow: hidden; 
}

.home {
    background: var(--very-light-gray);
    padding-bottom: 60px;
}

.home-img-box {
    background: url(../assets/img_about/Meteor.svg) no-repeat center;
    background-size: cover;
    padding: 0;
    margin-bottom: 40px;
}

.home-img-box .home-img.img-2 {
    display: none;
} 

.home-img-box .home-img.img-1 {
    display: block;
    aspect-ratio: 1/1;
    margin: 0 auto;
    width: 50%;
    object-fit: cover;
    object-position: bottom;
}   

.home-title {
    font-size: 38px;
    font-weight: 400;
    color: #053c6d;
    text-align: center;
    margin: 20px 0;
    padding: 0 20px;
}

.home-text {
    margin: auto;
    color: #444;
    text-align: center;
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 20px;
    padding: 0 20px;
}

div.values ul.values-list {
    max-width: 600px;
    margin: 0 auto;
}

div.values ul.values-list li {
    list-style: none;
    margin-left: 1em;
    padding: 5px;
    font-size: 15px;
    color: #444;
}

div.values ul.values-list li::before {
    content: "\2022";
    color: #444;
    font-weight: bold;
    display: inline-block; 
    width: 1em;
}

div.values ul.values-list li strong {
    list-style-type: disc;
    color: #444;
    margin-right: 5px;
}

.start-container {
	width: 90%;
	max-width: 1000px;
	margin: 20px auto;
}

.start-container article .btn-open-popup {
	padding: 0 20px;
	margin-bottom: 20px;
	height: 40px;
	line-height: 40px;
	border: none;
	color: #fff;
	background: #5E7DE3;
	border-radius: 3px;
	font-family: 'Montserrat', sans-serif;
	font-size: 16px;
	cursor: pointer;
	transition: .3s ease all;
	cursor: pointer;
}

.start-container article .btn-open-popup:hover {
	background: rgba(94,125,227, .9);
}

/* POPUP */

.overlay {
	background: rgba(0,0,0,.3);
	position: fixed;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	align-items: center;
	justify-content: center;
	display: flex;
	visibility: hidden;
}

.overlay.active {
	visibility: visible;
}

.popup {
	background: #F8F8F8;
	box-sizing: border-box;
	box-shadow: 0px 0px 5px 0px rgba(0,0,0,0.3);
	border-radius: 3px;
	font-family: 'Montserrat', sans-serif;
	padding: 10px 20px;
	text-align: center;
	width: 400px;
	
	transition: .3s ease all;
	transform: scale(0.7);
	opacity: 0;
}

.popup .btn-close-popup {
	font-size: 16px;
	line-height: 16px;
	width: 14px;
	margin-bottom: 10px;
    margin-left: calc(100% - 14px);
	display: block;
	text-align: right;
	transition: .3s ease all;
	color: #bbbbbb;
}

.popup .btn-close-popup:hover {
	color: #000;
}

.popup .popup-container {
	opacity: 0;
	display: flex;
	flex-direction: column;
	justify-content: space-around;
	gap: 0;
}

.popup .popup-container .container-link {
	width: 100%;
	height: 52px;
	font-size: 18px;
	line-height: 52px;
	text-align: center;
	text-decoration: none;
	box-sizing: border-box;
	border-width: 1px 2px 1px;
	border-style: solid;
	border-color: #000;
	color: #000;
	background-color: #bbbbbb;
}

.popup .popup-container .container-link:first-child {
	border-width: 2px 2px 1px;
}

.popup .popup-container .container-link:last-child{
	border-width: 1px 2px 2px;
}

.popup .popup-container .container-link:hover {
	background-color: #dddddd;
}

.popup.active {	
	transform: scale(1); 
	opacity: 1; 
}

.popup.active .popup-container {
	animation: inputEntrance 1s linear 1s forwards; 
}

@keyframes inputEntrance {
	from { opacity: 0; }
	to { opacity: 0.5; }
}

/* #FOOTER */

footer {
    background: var(--dark-blue);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    padding: 40px var(--px);
}

.footer-brand {
    display: block;
    margin: 0 auto 10px;
}
 
.wrapper-flex {
    display: flex;
    justify-content: space-between;
    flex-direction: column;
}

.wrapper-flex div div.navbar-logos {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    gap: 10px;
    height: 60px;
    width: 288.38px;
}

.wrapper-flex div div.navbar-logos img.logo {
    display: block;
}

.wrapper-flex div div.motto p{
    color: hsl(233, 8%, 62%);
}

.social-link {
    display: flex;
    gap: 10px;
    width: 190px;
    margin: 0 auto;
    margin-bottom: 30px;
}

.social-link ion-icon {
    color: var(--white);
    font-size: 30px;
    display: block;
    transition: 0.25s ease;
}

.social-link ion-icon:hover { 
    color: var(--lime-green); 
}

.footer-nav { 
    display: flex;  
    justify-content: space-around;
    flex-direction: column;
    margin: auto;
}

.footer-nav ul li{
    width: 100px;
}

.footer-nav ul,
.footer-nav ul li:not(:last-child) { 
    margin-bottom: 15px; 
}

.footer-nav a {
    color: var(--light-grayish-blue);
    font-size: 15px;
    transition: 0.25s ease;
}

.footer-nav a:hover { 
    color: var(--lime-green); 
}

footer .btn-primary { 
    margin-bottom: 30px; 
}

.copyright {
    color: var(--grayish-blue);
    font-size: 14px;
}

/* #RESPONSIVE */

/* #for tablet */

@media (min-width: 768px) {

    :root { --px: 80px; }

    /* home */

    .navbar-nav.active {
        width: 200px;
        left: calc(100% - 210px);
    }

    .section-text {
        font-size: 18px;
        max-width: 400px;
        margin: auto;
        margin-bottom: 50px;
    }

    .home-text {
        font-size: 18px;
        max-width: 600px;
    }

    .home-img-box .home-img.img-1 {
        aspect-ratio: 1.2/1;
        margin: 0 auto;
        width: 60%;
    }

    /* footer */

    .wrapper-flex {
        flex-direction: row;
    }

}

/* #for large tablet */

@media (min-width: 1024px) {

    /* header */

    header { position: static; }

    .navbar { 
        padding: 0 var(--px);
    }

    .navbar-toggle-btn { display: none; }

    .navbar-nav {
        position: static;
        padding: 0;
        z-index: 0;
        flex-direction: row;
        gap: 30px;
        opacity: 1;
        pointer-events: all;
    }

    .navbar-nav.active {
        width: auto;
        justify-content: space-between;
        padding: 0 20px;
    }

    .navbar-nav a {
        font-size: 17px;
        color: var(--grayish-blue);
        padding: 30px 0;
        transition: 0.25s ease;
    }

    .navbar-nav a:hover {
        color: var(--dark-blue);
        box-shadow: inset 0 -3px 0 var(--lime-green);
    }

    .navbar .btn-primary {
        display: block;
        margin: 0;
    }

    /* home */

    .home {
        display: flex;
        flex-direction: row-reverse;
        align-items: center;
        /* align-items: flex-start; */
        /* align-items: stretch; */
        padding: 0;
    }

    .home-img-box {
        width: 45%;      /* Important */
        background: url(../assets/img_about/Simple-Shiny.svg) no-repeat center;
        background-size: 100%;
        margin: 0 var(--px) 0 40px;
    }

    .home-img-box .home-img.img-1 {
        display: none;
    } 
    
    .home-img-box .home-img.img-2 {
        display: block;
        margin: 0 auto;
        /* transform: scale(0.5, 0.5); */
        width: 100%;
        aspect-ratio: unset;    /* Important */
    }   

    .home .wrapper {
        width: 55%;      /* Important */
        padding-left: var(--px);
    }

    .home-title {
        font-size: 30px;
        text-align: left;
        padding: 0;
    }

    div p.home-text {
        text-align: justify;
        margin: 0;
        padding: 0;
        margin-bottom: 20px;
        max-width: 600px;
    }

    div.values ul.values-list {
        min-width: 520px;
        margin: 0;
    }

    div.values ul.values-list {
        margin-bottom: 30px;
    }

    /* footer */

    footer {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        padding: 50px var(--px);
    }

    footer .wrapper-flex {
        display: flex;
        justify-content: space-between;
        width: 70%;
    }

    .footer-brand {
        margin: 0 auto 10px;
    }

    .social-link {
        gap: 12px;
        margin-bottom: 0;
        width: 158px;
    }

    .social-link ion-icon { font-size: 22px; }

    .footer-nav {
        flex-direction: row;
        margin-left: 40px;
    }

    footer .btn-primary { 
        margin-left: auto; 
    }

}

/* #for laptop */

@media (min-width: 1200px) {

    :root { --px: 100px; }

}