/*@import url('https://fonts.googleapis.com/css2?family=Rubik:ital,wght@0,300..900;1,300..900&display=swap');
*/
* {
    /* GLOBAL STYLES */
    --Soft-Blue: hsl(231, 69%, 60%);
    --Soft-Red: hsl(0, 94%, 66%);
    --Grayish-Blue: hsl(229, 8%, 60%);
    --Very-Dark-Blue: hsl(229, 31%, 21%);
    --White: hsl(299, 1%, 100%);
    --ff-size: 18px;
    --fw-400: 400;
    --fw-500: 500;
    --border-radius: 4px;
    --img-width-size: clamp(24rem, 100%, 60rem);
    font-family: 'Rubik','Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;

    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

@font-face {
    font-family: 'Rubik';
    src: url('./Rubik/Rubik-VariableFont_wght.ttf');
}

/* GENERAL STYLES */

body {
    font-size: var(--ff-size);
}

h1,h2,h3,h4 {
    color: var(--Very-Dark-Blue);
}

h1 {
    font-size: clamp(1rem, 2.25rem, 5rem);
    margin-bottom: 0.75rem;
    line-height: 3rem;
}

h2 {
    margin-bottom: 0.75rem;
}

p {
    font-size: clamp(16px, var(--ff-size), 3rem);
    line-height: 2rem;
}

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

.col {
    width: 100%;
    margin: auto;
}

.container {
    width: 90%;
    max-width: 425px;
    margin: auto;
    color: var(--Grayish-Blue);
}

.flex {
    display: flex;
}

img {
    width: 100%;
    display: block;
}

.dots {
    margin: 1rem 0;
}

button {
    border: 2px solid transparent;
    border-radius: 4px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    line-height: 2rem;
    font-weight: 500;
}

button:hover {
    border-width: 2px;
    border-style: solid;
}

button:not(.feature-btn, .question-btn, .mobile-nav-toggle) {
    box-shadow: 0px 10px 10px -5px rgba(50, 50, 93, 0.25), 0px 10px 50px 0px rgba(0, 0, 0, 0.3);
}

.primary-btn {
    color: var(--White);
    background: var(--Soft-Blue);
}

.primary-btn:hover {
    color: var(--Soft-Blue);
    background-color: transparent;
    border-color: var(--Soft-Blue);
}

.secondary-btn {
    color: var(--Very-Dark-Blue);
    background: var(--White);
}

.secondary-btn:hover {
    color: var(--Grayish-Blue);
    background-color: transparent;
    border-color: var(--Grayish-Blue);
}

.tetiary-btn {
    color: var(--White);
    background: var(--Soft-Red);
}

.tetiary-btn:hover {
    color: var(--Soft-Red);
    background-color: transparent;
    border-color: var(--Soft-Red);
}

.sr-only {
    display: none;
}

/* NAVIGATION */


header {
    position: relative;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    text-transform: uppercase;
}

nav:has(.primary-nav[data-visible="true"]) {
    background: var(--Very-Dark-Blue);
    opacity: 0.9;
    position: fixed;
    width: 100%;
    z-index: 100;
}

.logo img {
    margin: auto;
}

.mobile-nav-toggle {
    background-color: transparent;
}

.primary-nav {
    position: fixed;
    inset: calc(67px) 0 0 0;
    width: 100%;
    background: var(--Very-Dark-Blue);
    display: none;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}

.primary-nav[data-visible="true"] {
    display: flex;
    z-index: 10;
}

.primary-nav ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    color: var(--White);
    list-style: none;
    text-align: center;
    width: 100%;
}

.primary-nav hr {
    width: 80%;
    background-color: var(--Grayish-Blue);
    margin: auto;
}

.primary-nav li {
    padding: 0.5rem;
    margin: 0 auto;
    width: 80%;
    letter-spacing: 0.2rem;
    cursor: pointer;
}

.primary-nav li:last-child {
    border: 2px solid var(--White);
    border-radius: 4px;
}

.nav-share-icons {
    width: 7rem;
    gap: 1rem;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
}

.nav-share-icon {
    width: 1.5rem;
}

/* MAIN */

main {
    padding-top: 4rem;
    flex-direction: column;
    gap: 8rem;
    overflow-x: hidden;
}

section {
    text-align: center;
}

.hero-img {
    position: relative;
    width: calc(var(--img-width-size));
}

.hero-img img {
    margin: auto;
    object-fit: contain;
}

.hero-text {
    margin-top: 4rem;
    color: var(--Grayish-Blue);
}

.bg-img {
    width: calc(var(--img-width-size)/1.75);
    aspect-ratio: 1/1;
    background-color: var(--Soft-Blue);
    border-radius: 50%;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    position: absolute;
    z-index: -1;
}

.hero .bg-img {
    bottom: 5%;
    left: 10%;
}

.bg-img::after {
    content: "";
    width: calc(var(--img-width-size) * 2);
    height: clamp(4rem,100%,(var(--img-width-size)));
    background-color: var(--Soft-Blue);
    position: absolute;
}

.hero .bg-img::after {
    top: 0;
    left: 50%;
}

.hero-btns {
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 1rem auto;
}

    /* FEATURES SECTION */

.features {
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.features-header {
    width: 100%;
    margin: auto;
}

.features-header p {
    margin-top: 1rem;
}

.features-content {
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
    flex-direction: column;
    gap: 4rem;
}

.features-btns {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    list-style: none;
    flex-basis: 100%;
}

.feature-btn {
    width: 100%;
    border-radius: 0;
    color: var(--Grayish-Blue);
    font-size: inherit;
    line-height: 3rem;
    background: transparent;
    border-bottom: 1px solid var(--Grayish-Blue);
}

.feature-btn.active{
    position: relative;
    color: var(--Very-Dark-Blue);
}

.feature-btn.active::after {
    position: absolute;
    inset: auto 0 0;
    border: 1px solid var(--Soft-Red);
    margin: auto;
    content: "";
    width: 40%;
}

.feature-btn:first-child {
    border-top: 1px solid var(--Grayish-Blue);
}

.features-img {
    position: relative;
    width: calc(var(--img-width-size) - 10%);
}

.features .bg-img {
    bottom: -15%;
    right: 10%;
}

.features .bg-img::after {
    top: 0;
    right: 50%;
}

.features-tab {
    flex-direction: column;
    gap: 1rem;
}

.features-list-item {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4rem;
}

.features-list-item.active {
    display: flex;
}

.features-list-item.active .features-tab-btn button {
    display: none;
}

.features-btns button:hover, .question div:hover {
    color: var(--Soft-Red);
}

.downloads {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4rem;
}

    /* CARDS SECTION */
.cards {
    flex-direction: column;
    gap: 2rem;
}

.card {
    flex-direction: column;
    gap: 1rem;
    padding: 2rem 0;
    border: none;
    border-radius: 16px;
    box-shadow: rgba(50, 50, 93, 0.25) 0px 30px 50px -10px, rgba(0, 0, 0, 0.3) 0px 10px 20px -20px;
}

.card-btn, .FAQ-btn {
    justify-content: center;
    align-items: center;
}

.card-btn button {
    width: 80%;
}

.card-img {
    width: 40%;
    margin: auto;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

    /* FAQS SECTION */
.FAQs {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.FAQ-title {
    max-width: 475px;
}

.FAQ {
    text-align: left;
}

.question {
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
}

.question:hover {
    cursor: pointer;
}

.question:first-of-type {
    border-top: 1px solid var(--Grayish-Blue);
}

.question-btn {
    aspect-ratio: 1/1;
    padding: 0.5rem;
    border-radius: 50%;
    background-color: transparent;
    transition: all 500ms;
}

.question-btn img {
    width: 1rem;
}

.question-btn.isOpen {
    transform: rotate(180deg);
}

.question-btn.isOpen img{
    filter: brightness(0) saturate(100%) invert(51%) sepia(23%) saturate(5984%) hue-rotate(328deg) brightness(102%) contrast(97%);
}

.wrapper {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 1rem;
}

.wrapper > * {
    width: 100%;
    max-width: 475px;
}

.answer {
    max-height: 0;
    overflow: hidden;
    line-height: 2rem;
    border-bottom: 1px solid var(--Grayish-Blue);
}

.answer .container {
    margin: 0;
}

.answer.isOpen {
    max-height: 100%;
    padding: 1.5rem 0;
}

.FAQ-btn {
    width: 100%;
}

/* FORM ENROL SECTION */

.enroll {
    background-color: var(--Soft-Blue);
    width: 100%;
    padding: 2rem;
}

.form {
    color: var(--White);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.form > * {
    width: 100%;
    max-width: 425px;
}

.form > span {
    text-transform: uppercase;
    letter-spacing: 0.5rem;
    font-size: calc(var(--ff-size) - 8px);
    font-weight: var(--fw-500);
}

.form h3 {
    color: var(--White);
    text-wrap: balance;
    font-size: calc(var(--ff-size) * 1.5);
}

.form input[type='email'] {
    padding: 1rem;
    border: none;
    border-radius: 4px;
    width: 100%;
}

.form div {
    flex-wrap: wrap;
    gap: 1rem;
}

.form div > label {
    flex: 1 1 60%;
    min-width: 25ch;
    border-radius: 4px;
    background: var(--Soft-Red);
}

.form div > button {
    flex: 1 1 30%;
    min-width: 10ch;
    max-height: 48px;
}

.form div > button:hover {
    background-color: var(--White);
}

input[type='email'].error {
    color: salmon;
    border: 2px solid var(--Soft-Red);
    margin: auto;
    background-image: url('../images/icon-error.svg');
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

input[type='email'].error + small {
    color: var(--White);
    font-style: italic;
    font-size: 0.75rem;
    display: block;
    width: 100%;
    line-height: 0.65rem;
    padding: 0.35rem 0.75rem;
    text-align: left;
}

/* FOOTER */

footer {
    background: var(--Very-Dark-Blue);
    text-transform: uppercase;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--White);
    text-align: center;
}

.footer-items li, .footer-icons img {
    cursor: pointer;
}

.footer-items {
    flex-direction: column;
    gap: 2rem;
    padding: 2rem;
}

.footer-img {
    max-width: 375px;
}

footer ul {
    list-style: none;
}

.footer-items li:hover {
    color: var(--Soft-Red);
}

footer ul li + li {
    margin-top: 2rem;
}

.footer-icons {
    justify-content: center;
    align-items: center;
    padding: 1rem;
    gap: 1.5rem;
}

.footer-icons img {
    width: 10%;
    min-width: 2rem;
    aspect-ratio: 3/2;
    object-fit: contain;
}

.icon-facebook:hover {
    content: url("../images/icon-facebook-hover.svg");
}

.icon-twitter:hover {
    content: url("../images/icon-twitter-hover.svg");
}


/* Back To Top Button */
#back-to-top-btn {
    aspect-ratio: 1/1;
    border-radius: 50%;
    position: fixed;
    bottom: 2rem;
    right: 1rem;
    z-index: 1;
    scroll-behavior: smooth;
}

#back-to-top-btn img {
    transform: rotate(180deg);
}

.hidden {
    opacity: 0%;
}


    /* PC STYLES */


@media screen and (min-width: 1024px) {
    header > nav, main > section {
        width: 80%;
    }

    .col {
        width: 50%;
    }

    .container {
        max-width: 500px;
    }

    nav {
        padding: 1rem 0;
    }

    nav ul {
        flex-direction: row;
    }

    .mobile-nav-toggle, .nav-share-icons {
        display: none;
    }

    .primary-nav {
        position: static;
        width: 50%;
        max-width: 700px;
        background: transparent;
        display: flex;
    }

    .primary-nav hr {
        display: none;
    }

    .primary-nav ul{
        font-size: calc(var(--ff-size) - 4px);
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        color: var(--Very-Dark-Blue);
    }

    .primary-nav ul li:hover {
        color: var(--Soft-Red);
    }

    .primary-nav li:last-child {
        color: var(--White);
        background-color: var(--Soft-Red);
    }

    .primary-nav li:last-child:hover {
        color: var(--Soft-Red);
        background-color: transparent;
        border-color: var(--Soft-Red);
    }

    .hero {
        display: flex;
        flex-direction: row-reverse;
        text-align: left;
    }

    .hero-text p{
        text-align: left;
        width: 100%;
        margin-left: 0;
    }

    .hero-text > * {
        margin-bottom: 2rem;
    }

    .hero-btns {
        justify-content: flex-start;
        margin: auto 0;
        margin-top: 1rem;
    }

    .features-content button {
        width: auto;
        border: none;
        border-bottom: 1px solid var(--Grayish-Blue);
    }

    .features-content {
        margin-top: 2rem;
        flex-direction: column;
        gap: 4rem;
    }

    .features-btns {
        flex-direction: row;
        width: 700px;
        max-width: 700px;
    }

    .feature-btn:first-child {
        border-top: none;
    }

    .feature-btn.active::after {
        width: 100%;
    }

    .features-btns > * {
        flex-basis: 100%;
    }

    .features-list-item {
        flex-direction: row;
    }

    .features-list-item.active .features-tab-btn button {
        display: block;
    }
    

    .features-list-item > * {
        width: 50%;
    }

    .features-tab {
        text-align: left;
    }

    .features-tab .container {
        margin: 0;
        width: 100%;
    }

    .cards {
        flex-direction: row;
    }

    .card:nth-child(2) {
        transform: translateY(10%);
    }

    .card:nth-child(3) {
        transform: translateY(20%);
    }

    .form div {
        flex-wrap: nowrap;
    }

    .footer-items {
        flex-direction: row;
        justify-content: start;
        align-items: center;
        width: 80%;
        gap: 4rem;
    }

    .footer-items div:last-child {
        margin-left: auto;
    }

    .footer-items ul li {
        display: inline;
    }

    .footer-items ul li + li {
        margin-top: 0;
        margin-left: 2rem;
    }

    /* Custom ScrollBar */

    ::-webkit-scrollbar {
        width: 6px;
    }

    ::-webkit-scrollbar-track {
        border-radius: 6px;
    }

    ::-webkit-scrollbar-thumb {
        background-color: var(--Soft-Blue);
        border-radius: 6px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background-color: var(--Very-Dark-Blue);
    }
}