@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Text:ital@0;1&display=swap');

:root {


    --clr-primary: #1f1f1b;
    --clr-secondary: #3a726d;
    --clr-supporting: #eee8a9;

    --clr-green: #08c095;
    --clr-white: #ffffff;
    --clr-black: #000000;

    --clr-one: #3f3f3b;
    --clr-dark: #004b75;
    --clr-light: #ddf8d7;
    --clr-dark-green: #009aa0;

    --size-xxs: .5rem;
    --size-xs: .75rem;
    --size-sm: .875rem;
    --size-base: 1rem;
    --size-lg: 1.125rem;
    --size-xl: 1.25rem;
    --size-2xl: 1.5rem;
    --size-3xl: 1.875rem;
    --size-4xl: 2.25rem;
    --size-5xl: 3rem;
    --size-6xl: 3.75rem;
    --size-7xl: 4.5rem;
    --size-8xl: 6rem;
    --size-9xl: 8rem;
    --size-10xl: 10rem;
}

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

body {
    font-family: 'General serif', sans-serif;
    background-color: var(--clr-primary);
    width: 100%;
}

.container {
    max-width: 1560px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    /* border: 1px solid red; */
}


li,
a,
button {
    font-size: 1.2rem;
    text-decoration: none;
    color: var(--clr-white)
}

.nav-background {
    background-color: var(--clr-primary);
}

.navbar {
    background-color: var(--clr-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0px;
}

.logo {
    cursor: pointer;
    height: 1.8rem;
    width: 6rem;
}

.nav__links {
    list-style: none;
}

.nav__links li {
    display: inline-block;
    padding: 0px 60px;
}

.nav__links li a {
    transition: all 0.3s ease 0s;
}

.nav__links li a:hover {
    color: var(--clr-green);
}

.login-button {
    background-color: var(--clr-primary);
    border: 1px solid var(--clr-white);
    border-radius: 5px;
    padding: 0.3rem 1.1rem;
    margin-right: 1.2rem;
    max-width: 10ch;
    transition: all 0.3s ease 0s;
}

.login-button:hover {
    color: var(--clr-black);
    background-color: var(--clr-white);
    border: 1px solid var(--clr-primary);
}

.signup-button { 
    background-color: var(--clr-primary);
    border: 1px solid var(--clr-white);
    border-radius: 5px;
    padding: 0.3rem 1.1rem;
    transition: all 0.3s ease 0s;
}

.signup-button:hover {
    color: var(--clr-black);
    background-color: var(--clr-white);
    border: 1px solid var(--clr-primary);
} 

.navbar__burger{
    cursor: pointer;
    display: none;
    height: 100%; 
}

.navbar__burger:hover{
    background-color: #3f3f3b;
}

.showSidebar{  
    right: 0 !important;
}
 
.showOverlay{
    display: block !important;
}

/* sidebar block */

.sidebar {
    background-color: #1f1f1baa;  
    backdrop-filter: blur(10px);  
    display: flex;
    flex-direction: column; 
    position: fixed;
    min-height: 100vh;
    min-width: 30%; 
    top:0;
    right:-100%;
    z-index: 10;  
    transition: right 0.5s ease-in-out 0s;
}

.sidebar__cross{
    cursor: pointer;
    margin: 0.5rem 0rem 0rem 0.3rem ;
}

.sidebar__links {
    list-style: none; 
} 

.sidebar__links li a {
    display: block;
    padding: 20px 20px;
    transition: all 0.3s ease 0s;
}

.sidebar__links li a:hover {
    color: var(--clr-green);
    background-color: #ffffff39;
}

.sidebar div{ 
    margin-top:auto;
    margin-right: auto;
    margin-left: auto;
}

.sidebar button{
    padding: 0.6rem 1.1rem;
}

#overlay{
    display: none;
    position: fixed;
    inset:0;  
    z-index: 9;
    background: #0000005c; 
}




/* welcome block */

.welcome-background {
    background-image: url(cta1-background.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    height: 45rem;
}

.welcome {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 45rem;
    text-align: left;
    color: var(--clr-white);
}

.welcome h1 {
    max-width: 25ch;
    display: block;
    font-size: var(--size-6xl);
    text-shadow: 4px 4px var(--clr-one);
    letter-spacing: 0.2rem;
    line-height: 1.2;
}

.welcome p {
    max-width: 60ch;
    margin-top: 2rem;
    font-size: var(--size-2xl);
    line-height: 1.5;
    letter-spacing: 0.1rem;
    text-align: justify;
    color: var(--clr-white);
}

/* description block */

.description {
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 1rem;
    margin-top: 5rem;
    margin-bottom: 8rem;
    padding: 4rem;
    color: white;
}

.description h1 {
    font-size: var(--size-6xl);
    line-height: 2.5;
}


.description p {
    font-size: var(--size-2xl);
    line-height: 1.5;
    margin-left: 8rem;
    margin-right: 8rem;
    letter-spacing: 0.1rem;
    text-align: justify;
}

/* courses block */

.courses {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding-bottom: 15rem;
}

.courses__title {
    /* border: 1px solid red; */
    color: var(--clr-white);
    font-size: var(--size-5xl);
}

.courses__card-container {
    /* border: 1px solid red; */
    display: flex;
    flex-wrap: wrap;
    row-gap: 5rem;
    justify-content: space-between;

}

.card {
    /* border: 1px solid red; */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 2rem;
    text-align: center;
    max-width: 30%;
}

.card img {
    aspect-ratio: 4/3;
    border-radius: 20px;
}

.card p,
h1,
button {
    color: var(--clr-white);
}

.card h1 {
    font-size: var(--size-4xl);
    text-wrap: wrap;
}

.card p {
    font-size: var(--size-lg);
    line-height: 1.5;
    letter-spacing: 0.1rem;
}

.card button {
    background-color: var(--clr-primary);
    border: 1px solid var(--clr-white);
    border-radius: 5px;
    padding: 0.6rem 1.2rem;
    transition: all 0.3s ease 0s;
    margin-left: auto;
    margin-right: auto;
}

.card button:hover {
    color: var(--clr-black);
    background-color: var(--clr-green);
    border: 1px solid var(--clr-primary);
}

/* ending block */

.ending {
    display: flex;
    gap: 2rem;
    margin-bottom: 6rem;
}

.ending__text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: var(--clr-white);
}

.ending__text h1 {
    font-size: var(--size-5xl);
}

.ending__text p {
    max-width: 63ch;
    font-size: var(--size-xl);
    line-height: 1.5;
    letter-spacing: 0.1rem;
    padding-top: 2rem; 
    text-align: justify;
}

.ending__image {
    max-width: 50%;
    aspect-ratio: 4/3;
    border-radius: 20px;
}

.backgroundBlack{
    background-color: var(--clr-black);
    border: 1px solid red;
}
   
/* footer block */

.footer-background {
    background-color: var(--clr-black);
}

.footer {
    background-color: var(--clr-black);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5rem 0px 2rem 0px;
}

.footer-designer-background {
    background-color: var(--clr-black);
}

.footer-designer {
    background-color: var(--clr-black);
    color: var(--clr-one);
    text-align: center;
    padding: .8rem;
    padding-bottom: 1.2rem;
    font-size: var(--size-base);
    line-height: 1.5;
    letter-spacing: 0.1rem;
}

.footer-designer span{
    color: var(--clr-secondary); 
}







@media (max-width: 1536px) {

    li,
    a,
    button {
        font-size: 1.2rem;
    }

    .container {
        max-width: 1280px;
    }

    .description h1 {
        font-size: var(--size-4xl);
    }


    .description p {
        font-size: var(--size-xl);
        margin-left: 7rem;
        margin-right: 7rem;
    }

    .courses__title {
        color: var(--clr-white);
        font-size: var(--size-4xl);
    }

    .card h1 {
        font-size: var(--size-3xl);
    }

    .card p {
        font-size: var(--size-base);
        line-height: 1.5;
        letter-spacing: 0.1rem;
    }

    .ending__text h1 {
        font-size: var(--size-4xl);
    }

    .ending__text p { 
        font-size: var(--size-lg); 
    }


}

@media (max-width: 1280px) {

    li,
    a,
    button {
        font-size: 1rem;
    }

    .container {
        max-width: 1024px;
    }


    .welcome-background {
        height: 35rem;
    }

    .welcome {
        height: 35rem;
    }

    .welcome h1 {
        font-size: var(--size-4xl);
        text-shadow: 3px 3px var(--clr-one);
    }

    .welcome p {
        font-size: var(--size-base);
    }

    .description h1 {
        font-size: var(--size-2xl);
    }


    .description p {
        font-size: var(--size-lg);
        margin-left: 6rem;
        margin-right: 6rem;
    }

    .courses__title {
        color: var(--clr-white);
        font-size: var(--size-3xl);
    }

    .card h1 {
        font-size: var(--size-2xl);
    }

    .card p {
        font-size: var(--size-sm);
    }

    .ending__text h1 {
        font-size: var(--size-3xl);
    }

    .ending__text p { 
        font-size: var(--size-base); 
    }


}

@media (max-width: 1024px) {
   

    li,
    a,
    button {
        font-size: 0.8rem;
    }

    .container {
        max-width: 768px;
    }

    .welcome-background {
        height: 25rem;
    }

    .welcome {
        height: 25rem;
    }

    .welcome h1 {
        font-size: var(--size-2xl);
        text-shadow: 2px 2px var(--clr-one);
    }

    .welcome p {
        font-size: var(--size-sm);
    }

    .description h1 {
        font-size: var(--size-base);
    }


    .description p {
        font-size: var(--size-sm);
        margin-left: 1rem;
        margin-right: 1rem;
    }


    .description p {
        font-size: var(--size-base);
        margin-left: 5rem;
        margin-right: 5rem;
    }

    .courses__title {
        color: var(--clr-white);
        font-size: var(--size-2xl);
    }

    .card h1 {
        font-size: var(--size-xl);
    }

    .card p {
        font-size: var(--size-xs);
    }

    .ending__text h1 {
        font-size: var(--size-2xl);
    }

    .ending__text p { 
        font-size: var(--size-xs); 
    }
    
}

@media (max-width: 768px) {

    li,
    a,
    button {
        font-size: 0.7rem;
    }

    .nav__links li {
        padding: 0px 30px;
    }

    .container {
        max-width: 640px;
    }

    .welcome-background {
        height: 20rem;
    }

    .welcome {
        height: 20rem;
    }

    .welcome h1 {
        font-size: var(--size-xl);
    }

    .welcome p {
        font-size: var(--size-xs);
    }

    .description h1 {
        font-size: var(--size-sm);
        line-height: 1.5;
    } 

    .description p {
        font-size: var(--size-xs);
        margin-left: 4rem;
        margin-right: 4rem;
    }

    .courses__title {
        color: var(--clr-white);
        font-size: var(--size-xl);
    }

    .card h1 {
        font-size: var(--size-lg);
    }

    .card p {
        font-size: var(--size-xs);
    }

    .ending{
        flex-direction: column;
        flex-wrap:wrap ;
        align-items: center;
    }
    .ending__text h1{
        max-width: 100ch;
        text-align: center;
    }

    .ending__text p{
        max-width: 100ch;
        padding-left: 2rem;
        padding-right: 2rem;
    }

    .ending__image{
        aspect-ratio: 16/9;
        max-width: 100%;
    }

    .footer-designer {
        font-size: var(--size-sm);
    }
}

@media (max-width: 640px) {
    .nav__links li {
        padding: 0px 10px;
    }

    .container {
        max-width: 475px;
    }

    .welcome-background {
        height: 15rem;
    }

    .welcome {
        height: 15rem;
    }

    .welcome h1 {
        font-size: var(--size-lg);
    }

    .welcome p {
        font-size: var(--size-xxs);
    }

    .description {
        margin-top: 1rem;
        margin-bottom: 2rem;
    }

    .description h1 {
        font-size: var(--size-sm);
        line-height: 1.5;
    }


    .description p {
        font-size: var(--size-xxs);
        margin-left: 0rem;
        margin-right: 0rem;
    }
    .courses{
        padding-bottom: 5rem;
    }

    .courses__title {
        color: var(--clr-white);
        font-size: var(--size-lg);
    }

    .card {
        max-width: 42%;
    }

    .courses__card-container {
        justify-content: space-evenly;
    }

    .card h1 {
        font-size: var(--size-xs);
    }

    .card p {
        font-size: var(--size-xxs);
    }

    .ending__text h1 {
        font-size: var(--size-sm);
    }

    .ending__text p { 
        font-size: var(--size-xs); 
    }
}

@media (max-width: 475px) {

    .navbar{
        padding:0;
    }

     .navbar__burger{
        display:block;
    }

    .navbar nav, .navbar > div:first-of-type {
        display: none;
    }
      
    .welcome-background {
        height: 10rem;
    }

    .welcome {
        height: 10rem;
    }

    .welcome h1 {
        font-size: var(--size-sm);
    }

    .welcome p {
        font-size: var(--size-xxs);
    }

    .ending{
        margin-bottom: 2rem;
    }
    
    .ending__text h1 {
        font-size: var(--size-xs);
    }

    .ending__text p { 
        font-size: var(--size-xxs); 
    }

    .footer-designer {
        font-size: var(--size-sm);
    }
}

/*  -CSS custom variables(:root)
    -Mycolor color picker
    -Color theory 60/30/10
    -Predefined CSS variables (slaying the dragon)
    -Predefined media queries (slaying the dragon)
    -Chatgpt text generation
    -Navbar (skillthrive) */