/*Base styles*/

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

:root {
    --body-font-size: 1.6rem;
    --body-font-color: #5f5f5f;
    --body-font-family: 'Open Sans', sans-serif;
    --heading-font-family: 'Playfair Display', sans-serif;
    --light-color: #f4f4f4;
    --dark-color: #262626;
    --light-gray-color: #f2f3f7;
    --orange-color: #ec5453;
    --blue-color: #2c98f0;
    --yellow-color: #f9bf3f;
    --purple-color: #a84cb8;
    --dark-blue-color: #4054b2;
}

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font-family);
    color: var(--body-font-color);
    font-size: var(--body-font-size);
}

a {
    display: block;
    text-decoration: none;
}


/* navigation style */

.hamburger-menu {
    display: none;
}

.nav {
    width: 26rem;
    height: 100vh;
    background-color: var(--dark-color);
    color: var(--light-color);
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.intro {
    font-family: var(--heading-font-family);
    text-align: center;
    margin: 5rem 0;
    line-height: 1.5;
}

.intro-heading {
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.intro-subhead {
    font-size: 1.4rem;
    letter-spacing: 1px;
}

.nav-list {
    list-style: none;
}

.nav-item {
    position: relative;
}

.nav-item::before {
    content: "";
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(.83, 0, 0.17, 1);
}

.nav-item:hover::before {
    transform: scaleX(1);
}

.nav-item:not(:last-child) {
    border-bottom: 1px solid rgba(255, 255, 255, .05);
}

.nav-link {
    font-size: 1.4rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--light-color);
    padding: 1rem;
}

.social-media-wrapper {
    margin-top: auto;
    margin-bottom: 3rem;
    text-align: center;
}

.social-media-wrapper span {
    display: block;
    font-size: 1.2rem;
    font-style: italic;
    font-weight: 300;
    margin-bottom: 1rem;
}

.social-media {
    display: flex;
    justify-content: center;
}

.sm-link {
    font-size: 3.6rem;
    color: var(--light-color);
    transition: color .5s, transform .5s;
}

.sm-link:hover {
    color: #999;
    transform: translateY(-3px);
}

.sm-link:nth-child(2) {
    margin: 0 2rem;
}

.copyright-notice {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, .5);
}


/* main section style */

.main {
    width: calc(100% - 26rem);
    transform: translateX(26rem);
}

section:not(.hero) {
    padding: 5rem 0;
}


/* heor section style */

.hero {
    height: 100vh;
    background: url(./images/hero_background.jpg) bottom center/cover;
    position: relative;
    display: flex;
    justify-content: center;
}

.name-heading {
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 18vw;
    font-family: var(--heading-font-family);
    color: var(--light-color);
    z-index: 1;
    user-select: none;
}

.hero-person-image {
    max-width: 95%;
    user-select: none;
    -webkit-user-drag: none;
    /* margin-top: auto; */
    position: relative;
    z-index: 2;
    height: 90vh;
}

.scroll-down {
    position: absolute;
    bottom: 1rem;
    left: 48.7%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 5;
}

.mouse {
    height: 5rem;
    width: 2.4rem;
    border: 2px solid var(--light-color);
    border-radius: 2rem;
    display: flex;
}

.mouse span {
    display: block;
    height: 1rem;
    width: 1rem;
    background-color: var(--light-color);
    border-radius: 50%;
    margin: auto;
    animation: move-wheel 1s linear infinite;
}

.arrow span {
    display: block;
    border-right: 2px solid var(--light-color);
    border-bottom: 2px solid var(--light-color);
    height: 1rem;
    width: 1rem;
    transform: rotate(45deg);
    animation: arrow-down 1s linear infinite;
}

@keyframes move-wheel {
    0% {
        opacity: 1;
        transform: translateY(-1rem);
    }
    100% {
        opacity: 0;
        transform: translateY(2rem);
    }
}

@keyframes arrow-down {
    0% {
        opacity: 0;
    }
    25% {
        opacity: .25;
    }
    50% {
        opacity: .5;
    }
    75% {
        opacity: .75;
    }
    100% {
        opacity: 0;
    }
}


/* about me section style */

.container {
    max-width: 100rem;
    margin: 0 auto;
    padding: 0 3rem;
}

.heading-group {
    color: var(--dark-color);
    margin-bottom: 5rem;
}

.section-head-small {
    display: block;
    font-size: 1rem;
    text-transform: uppercase;
    color: #999;
    letter-spacing: 3px;
    margin-bottom: 1rem;
}

.section-head-large {
    font-size: 1.8rem;
    font-family: var(--heading-font-family);
    text-transform: uppercase;
    letter-spacing: .5rem;
}

.intro-description p:not(:last-child) {
    margin-bottom: 2rem;
}

.intro-description p span {
    font-family: var(--heading-font-family);
    font-weight: bold;
    color: var(--dark-color);
    letter-spacing: 1px;
}

.call-to-action {
    background-color: var(--yellow-color);
    margin-top: 5rem;
    padding: 3rem;
    color: var(--dark-color);
}

.call-to-action p {
    font-size: 2.4rem;
    font-weight: 300;
    margin-bottom: 2rem;
}

.btn {
    font-size: 1.4rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 1rem 3rem;
    display: inline-block;
    transition: background-color 0.5s;
}

.cta-btn {
    color: var(--dark-color);
    border: 1px solid var(--dark-color);
}

.cta-btn:hover {
    color: #fff;
    background-color: var(--dark-color);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 2.5rem;
}

.expertise .grid-item {
    background-color: #fff;
    box-shadow: 0 .5rem 2rem rgba(0, 0, 0, 0.1);
    padding: 2rem;
    border-bottom: 3px solid transparent;
    position: relative;
}

.grid-item.orange {
    border-bottom-color: var(--orange-color);
}

.grid-item.blue {
    border-bottom-color: var(--blue-color);
}

.grid-item.yellow {
    border-bottom-color: var(--yellow-color);
}

.grid-item.purple {
    border-bottom-color: var(--purple-color);
}

.grid-item.dark-blue {
    border-bottom-color: var(--dark-blue-color);
}

.orange i {
    color: var(--orange-color);
}

.blue i {
    color: var(--blue-color);
}

.yellow i {
    color: var(--yellow-color);
}

.item-icon {
    display: block;
    font-size: 3.6rem;
    margin-bottom: 1rem;
}

.item-heading {
    font-size: 2rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2rem;
}

.margin-top {
    margin-top: 5rem;
}

.item-skill {
    width: calc(100% + 1rem);
    height: 5rem;
    position: absolute;
    top: 1rem;
    left: -1rem;
    display: flex;
}

.item-skill::before {
    content: '';
    position: absolute;
    top: -1rem;
    left: -.99rem;
    border: 1rem solid transparent;
    z-index: -1;
}

.orange .item-skill {
    background-color: var(--orange-color);
}

.orange .item-skill::before {
    border-right-color: var(--orange-color);
}

.blue .item-skill {
    background-color: var(--blue-color);
}

.blue .item-skill::before {
    border-right-color: var(--blue-color);
}

.yellow .item-skill {
    background-color: var(--yellow-color);
}

.yellow .item-skill::before {
    border-right-color: var(--yellow-color);
}

.purple .item-skill {
    background-color: var(--purple-color);
}

.purple .item-skill::before {
    border-right-color: var(--purple-color);
}

.dark-blue .item-skill {
    background-color: var(--dark-blue-color);
}

.dark-blue .item-skill::before {
    border-right-color: var(--dark-blue-color);
}

.skill-name {
    font-size: 2rem;
    text-transform: uppercase;
    color: var(--light-color);
    font-weight: 400;
    letter-spacing: 1px;
    margin: auto;
}

.skill-description {
    margin-top: 5rem;
    padding: 3rem 0;
    line-height: 2;
}


/* motto style */

.motto {
    height: 35vh;
    background: url(images/section_background.jpg) bottom/cover;
    position: relative;
    z-index: 1;
}

.motto::before {
    content: '';
    width: 100%;
    height: 100%;
    position: absolute;
    background: rgba(0, 0, 0, 0.75);
    top: 0;
    left: 0;
    z-index: -1;
}

.motto .container {
    height: 100%;
    display: flex;
}

.quote-wrapper {
    margin: auto;
    text-align: center;
    max-width: 58rem;
    color: var(--light-color);
}

.quote {
    font-size: 2rem;
    font-weight: 300;
    padding: 1.5rem;
    position: relative;
}

.quote::before,
.quote::after {
    position: absolute;
    width: 5rem;
    font-size: 12rem;
    height: 5rem;
    font-family: sans-serif;
}

.quote::before {
    content: open-quote;
    top: -3rem;
    left: -3rem;
}

.quote::after {
    content: close-quote;
    bottom: -.5rem;
    right: -3rem;
}

.quoted-by {
    display: block;
    text-align: right;
    margin-top: 2rem;
}


/* work-experience section style */

.timeline {
    position: relative;
}

.timeline::before,
.timeline::after,
.timeline-item::before,
.timeline-item::after {
    content: '';
    position: absolute;
}

.timeline::before {
    width: .5rem;
    height: 100%;
    background-color: var(--light-gray-color);
    border-radius: 1rem;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}

.timeline::after {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    border: .5rem solid var(--light-gray-color);
    bottom: -2.5rem;
    left: -1.2rem;
}

.timeline-item {
    background-color: var(--light-gray-color);
    padding: 2.5rem;
    margin-left: 3.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-item::before {
    top: .5rem;
    left: -2rem;
    border: 1rem solid transparent;
    border-right-color: var(--light-gray-color);
}

.timeline-item::after {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background-color: var(--light-gray-color);
    top: -.3px;
    left: -4.7rem;
}

.timeline-heading {
    margin-bottom: 2rem;
}

.timeline-entry {
    display: inline-block;
    margin-right: 1rem;
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: 1px;
    color: var(--dark-color);
    text-transform: uppercase;
}


/* my-portfolio style */

.my-portfolio .grid {
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
}

.my-portfolio .grid-item {
    min-height: 25rem;
    position: relative;
    overflow: hidden;
}

.portfolio-item-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

.portfolio-item-info {
    height: 100%;
    background-color: var(--blue-color);
    color: var(--light-color);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    text-transform: uppercase;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transition: opacity .5s;
}

.portfolio-item-info:hover {
    opacity: 1;
}

.project-name {
    font-size: 2rem;
    letter-spacing: 1px;
    margin-bottom: .7rem;
    transform: translateY(-2rem);
    transition: transform .5s;
}

.project-name span {
    font-weight: 300;
    opacity: .5;
}

.project-type {
    font-size: 1.3rem;
    opacity: .5;
    transform: translateY(2rem);
    transition: transform .5s;
}

.portfolio-item-info:hover .project-name,
.portfolio-item-info:hover .project-type {
    transform: translateY(0);
}

.info-cta {
    margin-top: auto;
}

.info-btn {
    color: var(--light-color);
    border: 1px solid var(--light-color);
}

.info-btn:hover {
    color: var(--dark-color);
    background-color: rgba(255, 255, 255, 0.7);
    border-color: transparent;
}

.btn-blue {
    background-color: var(--blue-color);
    color: var(--light-color);
}

.btn-blue:hover {
    background-color: #2977b1;
}

.load-more .btn {
    margin-top: 2.5rem;
    padding: 1rem 5rem;
}


/* contact section style */

.contact-info-wrapper {
    display: flex;
    flex-wrap: wrap;
}

.contact-info {
    flex-basis: 45%;
}

.contact-info-item {
    display: flex;
    align-items: center;
    margin-bottom: 2.5rem;
}

.info-item-icon {
    background-color: var(--light-gray-color);
    display: flex;
    width: 10rem;
    height: 5rem;
    font-size: 3rem;
    color: var(--blue-color);
    border-radius: 3px;
}

.info-item-icon i {
    margin: auto;
}

.data-wrapper {
    margin-left: 2rem;
}

.item-data {
    display: block;
    font-size: 1.4rem;
    line-height: 1.5;
}

.contact-form {
    flex: 1;
}

.contact-form .input,
.contact-form textarea {
    width: 100%;
    background-color: var(--light-gray-color);
    font-family: var(--body-font-family);
    color: var(--body-font-color);
    font-size: 1.4rem;
    letter-spacing: 1px;
    border: none;
    border-radius: 3px;
    margin-bottom: 2rem;
    padding: 1rem;
}

.contact-form .btn {
    border: none;
    border-radius: 3px;
    cursor: pointer;
}


/* reesponsive design */

@media screen and (max-width: 1030px) {
    .nav {
        transform: translateX(-27rem);
        transition: transform 0.5s;
    }
    .is-open .nav {
        transform: translateX(0);
    }
    .hamburger-menu {
        display: flex;
        width: 5rem;
        height: 5rem;
        background-color: var(--dark-color);
        color: var(--light-color);
        position: fixed;
        top: 0;
        left: 0;
        font-size: 2.6rem;
        cursor: pointer;
        transition: transform .5s;
        z-index: 2000;
    }
    .hamburger-menu i {
        margin: auto;
    }
    .close {
        display: none;
    }
    .is-open .hamburger-menu {
        transform: translateX(21rem);
    }
    .is-open .close {
        display: block;
    }
    .is-open .open {
        display: none;
    }
    .main {
        width: 100%;
        transform: initial;
    }
    .hero {
        height: 80vh;
    }
    .hero::after {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.8);
        z-index: 999;
        opacity: 0;
        transform: scale(0);
        transition: opacity .5s;
    }
    .is-open .hero::after {
        opacity: 1;
        transform: scale(1);
    }
    .name-heading {
        font-size: 25vw;
    }
    .portfolio-item-info {
        background-color: rgba(0, 0, 0, 0.5);
        opacity: 1;
    }
    .project-name {
        transform: translateY(0);
    }
    .project-type {
        transform: translateY(0);
    }
    .info-btn:first-child {
        margin-bottom: 1rem;
    }
}

@media screen and (max-width: 768px) {
    .grid,
    .my-portfolio .grid {
        grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    }
}

@media screen and (min-width: 601px) and (max-width: 767px) {
    .hero-person-image {
        max-height: 50vh;
    }
    .hero {
        height: 50rem!important;
    }
}

@media screen and (max-width: 600px) {
    .hero {
        height: 55vh;
    }
    .hero-person-image {
        height: 50vh;
    }
    .call-to-action p {
        font-size: 2rem;
    }
    .motto {
        height: 60vh;
    }
    .quote::before,
    .quote::after {
        font-size: 8rem;
    }
    .quote::before {
        top: -2rem;
        left: -3rem;
    }
    .quote::after {
        bottom: -2rem;
        right: -2rem;
    }
    .quoted-by {
        margin-top: 4rem;
    }
    .timeline-entry {
        display: block;
        font-size: 1.6rem;
    }
    .timeline-heading span {
        font-size: 1.4rem;
    }
}

@media screen and (orientation: landscape) and (max-width: 1000px) {
    .nav {
        overflow: scroll;
    }
    .hero {
        height: initial;
        min-height: 100vh;
    }
}

@media screen and (min-width: 1925px) {
    html {
        font-size: 75%;
    }
}