* {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    text-decoration: none;
    list-style: none;
    box-sizing: border-box;
}

:root {
    --color-primary: #ffffff;
    --color-success: #00bf8e;
    --color-warning: #f7c94b;
    --color-danger: #23b665;
    --color-danger-variant: rgba(247, 88, 66, 0.4);
    --color-white: rgb(0, 0, 0);
    --color-light: rgba(255, 255, 255, 0.7);
    --color-black: #000;
    --color-bg: #ffffff;
    --color-bg1: #2d2d2e;
    --color-bg2: #252525;
    --container-width-lg: 80%;
    --container-width-md: 90%;
    --container-width-sm: 94%;
    --transition: all 400ms ease;
}

body {
    font-family: "Montserrat", sans-serif;
    line-height: 1.7;
    color: var(--color-white);
    background: var(--color-bg);
}

.container {
    width: var(--container-width-lg);
    margin: 0 auto;
}

section {
    padding: 6rem 0;
}

section h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: #333333;
}

h1,
h2,
h3,
h4,
h5 {
    line-height: 1.2;
}

h1 {
    font-size: 2.4rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.6rem;
}

h4 {
    font-size: 1.3rem;
    color: #fff;
}

a {
    color: #fff;
}

small {
    color: #fff;
}

img {
    width: 100%;
    display: block;
    object-fit: cover;
}

.logo img {
    align-items: center;
    z-index: 3000;
    width: 250px;
    margin-left: auto;
    margin-right: auto;
    padding-bottom: 20px;
}

.logo {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    background: var(--color-white);
    color: #fff;
    padding: 1rem 2rem;
    border-radius: 5px;
    border: 1px solid transparent;
    font-weight: 500;
    transition: var(--transition);
}

.btn:hover {
    background: transparent;
    color: #fff;
    border-color: #fff;
}

.pustoi {
    margin-bottom: 40px;
}

.btn-primary {

    background: #FBBA00;
    color: #fff;
}


/* =================== NAVBAR ===================== */

nav {
    background: transparent;
    width: 100vw;
    /* height: 5rem; */
    position: fixed;
    top: 0;
    z-index: 11;
}


/* change navbar styles on scroll using javascript */

.window-scroll {
    background:rgb(42, 89, 161);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.2);
}

.nav__container {
    height: 100%;
    padding-top: 20px;
    align-items: center;
}

nav button {
    display: none;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.nav__menu a {
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav__menu a:hover {
    color: var(--color-bg2);
}


/* =================== HEADER ===================== */

header {
    position: relative;
    top: 5rem;
    overflow: hidden;
    height: 70vh;
    margin-bottom: 5rem;
}

.header__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 5rem;
    height: 100%;
}

.header__left p {
    margin: 1rem 0 2.4rem;
}


/* =================== POPULAR COURSES ===================== */

.courses {
    margin-top: 10rem;
}
.courses2{
    padding-top: 0;
}


.courses2__container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.courses__container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.course {
    background: rgb(42, 89, 161);
    text-align: center;
    border-radius: 5px;
    border: 1px solid transparent;
    transition: var(--transition);
}

.course:hover {
    background: rgb(25, 68, 126);
    border-color: var(--color-primary);
}

.course__info {
    padding: 2rem;
}

.course__info p {
    margin: 1.2rem 0 2rem;
    font-size: 0.9rem;
    color: #fff;
}



/* =================== FOOTER ===================== */

footer {
    background: var(--color-bg1);
    padding-top: 5rem;
    font-size: 0.9rem;
    align-items: center;
}

.footer__container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 5rem;
}

.footer__container>div h4 {
    margin-bottom: 1.2rem;
}

.footer__1 p {
    margin: 0 0 2rem;
}

footer ul li {
    margin-bottom: 0.7rem;
}

footer ul li a:hover {
    text-decoration: underline;
}

.footer__socials {
    display: flex;
    gap: 1rem;
    font-size: 1.2rem;
    margin-top: 2rem;
}

.footer__copyright {
    text-align: center;
    margin-top: 4rem;
    padding: 1.2rem 0;
    border-top: 1px solid var(--color-bg2);
}


/* ===================== MEDIA QUERIES (TABLETS) ==================== */

@media screen and (max-width: 1024px) {
    .container {
        width: var(--container-width-md);
    }
    h1 {
        font-size: 2.2rem;
    }
    h2 {
        font-size: 1.7rem;
    }
    h3 {
        font-size: 1.4rem;
    }
    h4 {
        font-size: 1.2rem;
    }
    /* ====================== NAVBAR ===================== */
    nav button {
        display: inline-block;
        background: transparent;
        font-size: 1.8rem;
        color: var(--color-white);
        cursor: pointer;
    }
    nav button#close-menu-btn {
        display: none;
    }
    .nav__menu {
        position: fixed;
        top: 5rem;
        right: 5%;
        height: fit-content;
        width: 18rem;
        flex-direction: column;
        gap: 0;
        display: none;
    }
    .nav__menu li {
        width: 100%;
        height: 5.8rem;
        animation: animateNavItems 400ms linear forwards;
        transform-origin: top right;
        opacity: 0;
    }
    .nav__menu li:nth-child(2) {
        animation-delay: 200ms;
    }
    .nav__menu li:nth-child(3) {
        animation-delay: 400ms;
    }
    .nav__menu li:nth-child(4) {
        animation-delay: 600ms;
    }
    @keyframes animateNavItems {
        0% {
            transform: rotateZ(-90deg) rotateX(90deg) scale(0.1);
        }
        100% {
            transform: rotateZ(0) rotateX(0) scale(1);
            opacity: 1;
        }
    }
    .nav__menu li a {
        background: var(--color-primary);
        box-shadow: -4rem 6rem 10rem rgba(0, 0, 0, 0.6);
        width: 100%;
        height: 100%;
        display: grid;
        place-items: center;
    }
    .nav__menu li a:hover {
        background: var(--color-bg2);
        color: var(--color-white);
    }
    /* ====================== HEADER ===================== */
    header {
        height: 52vh;
        margin-bottom: 4rem;
    }
    .header__container {
        gap: 0;
        padding-bottom: 3rem;
    }
    /* ====================== CATEGORIES ===================== */
   ====================== POPULAR COURSES ===================== */
    .courses {
        margin-top: 0;
    }
    .courses2 {
        margin-top: 0;
    }
    .courses__container {
        grid-template-columns: 1fr 1fr;
    }
    .courses2__container {
        grid-template-columns: 1fr 1fr;
    }
    /* ====================== FAQs ===================== */
==================== FOOTER ===================== */
    .footer__container {
        grid-template-columns: 1fr 1fr;
    }
}


/* ======================== MEDIA QUERIES (PHONES) ======================= */

@media screen and (max-width: 600px) {
    .container {
        width: var(--container-width-sm);
    }
    /* ====================== NAVBAR ===================== */
    .nav__menu {
        right: 3%;
    }
    /* ====================== HEADER ===================== */
    header {
        height: 100vh;
    }
    .header__container {
        grid-template-columns: 1fr;
        text-align: center;
        margin-top: 0;
    }
    .header__left p {
        margin-bottom: 1.3rem;
    }
    /* ====================== CATEGORIES ===================== */

    /* ====================== POPULAR COURSES ===================== */
    .courses__container {
        grid-template-columns: 1fr;
    }
    .courses2__container {
        grid-template-columns: 1fr;
    }
    /* ====================== TESTIMONIALS ===================== */

    .footer__container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    .footer__1 p {
        margin: 1rem auto;
    }
    .footer__socials {
        justify-content: center;
    }
}

.logo12 {
    width: 5px;
    height: 10px;
}

@media(max-width:600px) {
    .logo12 {
        width: 5px;
        height: 10px;
    }
}

.nav__container {
    text-align: center;
}