/* Base Variables */
:root {
    --header-height: 3rem;

    /* Main Color */
    /* Purple 250 - Green 142 - Blue 230 - Pink 340 */
    --hue-color: 260; 

    /* HSL color mode */
    --first-color: hsl(var(--hue-color), 69%, 61%);
    --first-color-second: hsl(var(--hue-color), 69%, 61%);
    --first-color-alt: hsl(var(--hue-color), 57%, 53%);
    --first-color-lighter: hsl(var(--hue-color), 92%, 85%);
    --title-color: hsl(var(--hue-color), 8%, 15%);
    --text-color: hsl(var(--hue-color), 8%, 45%);
    --text-color-light: hsl(var(--hue-color), 8%, 65%);
    --input-color: hsl(var(--hue-color), 70%, 96%);
    --body-color: hsl(var(--hue-color), 60%, 99%);
    --container-color: #FFF;
    --scroll-bar-color: hsl(var(--hue-color), 12%, 90%);
    --scroll-thumb-color: hsl(var(--hue-color), 12%, 80%);

    /* Fonts */
    --body-font: 'Poppins', sans-serif;

    --big-font-size: 2rem;
    --h1-font-size: 1.5rem;
    --h2-font-size: 1.25rem;
    --h3-font-size: 1.125rem;
    --normal-font-size: .938rem;
    --small-font-size: .813rem;
    --smaller-font-size: .75rem;

    --font-medium: 500;
    --font-semi-bold: 600;

    /* Margins */
    --mb-0-25: .25rem;
    --mb-0-5: .5rem;
    --mb-0-75: .75rem;
    --mb-1: 1rem;
    --mb-1-5: 1.5rem;
    --mb-2: 2rem;
    --mb-2-5: 2.5rem;
    --mb-3: 3rem;

    /* Z-index */
    --z-tooltip: 10;
    --z-fixed: 100;
    --z-modal: 1000;
}

/* Font size for large devices */
@media screen and (min-width: 968px) {
    :root {
        --big-font-size: 3rem;
        --h1-font-size: 2.25rem;
        --h2-font-size: 1.5rem;
        --h3-font-size: 1.25rem;
        --normal-font-size: 1rem;
        --small-font-size: .875rem;
        --smaller-font-size: .813rem;
    }
}

/* Dark theme */
body.dark-theme{
    /* HSL color mode */
    --first-color-second: hsl(var(--hue-color), 30%, 8%);
    --title-color: hsl(var(--hue-color), 8%, 95%);
    --text-color: hsl(var(--hue-color), 8%, 75%);
    --input-color: hsl(var(--hue-color), 29%, 16%);
    --body-color: hsl(var(--hue-color), 28%, 12%);
    --container-color: hsl(var(--hue-color), 29%, 16%);
    --scroll-bar-color: hsl(var(--hue-color), 12%, 48%);
    --scroll-thumb-color: hsl(var(--hue-color), 12%, 36%);
}

/* Dark Mode Button */
.nav__btns{
    display: flex;
    align-items: center;
}

.change__btn{
    font-size: 1.25rem;
    color: var(--title-color);
    margin-right: var(--mb-1);
    cursor: pointer;
}

.change__btn:hover{
    color: var(--first-color);
}

/* Preloader */
.preloader__conatiner{
    position: fixed;
    z-index: var(--z-modal);
    background-color: var(--first-color);
    width: 100%;
    height: 100%;
    opacity: 1;
    -webkit-transition: opacity 2000ms ease;
    transition: opacity 2000ms ease;
}

.preloader__content{
    font-size: var(--h1-font-size);
    font-weight: var(--font-medium);
    top: 55%;
    position: relative;
    color: #FFF;
    text-align: center;
}

.loading__cube__container {
    top: 50%;
    margin: 0 auto;
    width: var(--big-font-size);
    height: var(--big-font-size);
    position: relative;
    -webkit-transform: rotateZ(45deg);
            transform: rotateZ(45deg);
}

.loading__cube__container .loading__cube {
  float: left;
  width: 50%;
  height: 50%;
  position: relative;
  -webkit-transform: scale(1.1);
      -ms-transform: scale(1.1);
          transform: scale(1.1); 
}
.loading__cube__container .loading__cube:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #FFF;
  -webkit-animation: loading-animation 2.4s infinite linear both;
          animation: loading-animation 2.4s infinite linear both;
  -webkit-transform-origin: 100% 100%;
      -ms-transform-origin: 100% 100%;
          transform-origin: 100% 100%;
}
.loading__cube__container .loading__cube-2 {
  -webkit-transform: scale(1.1) rotateZ(90deg);
          transform: scale(1.1) rotateZ(90deg);
}
.loading__cube__container .loading__cube-3 {
  -webkit-transform: scale(1.1) rotateZ(180deg);
          transform: scale(1.1) rotateZ(180deg);
}
.loading__cube__container .loading__cube-4 {
  -webkit-transform: scale(1.1) rotateZ(270deg);
          transform: scale(1.1) rotateZ(270deg);
}
.loading__cube__container .loading__cube-2:before {
  -webkit-animation-delay: 0.3s;
          animation-delay: 0.3s;
}
.loading__cube__container .loading__cube-3:before {
  -webkit-animation-delay: 0.6s;
          animation-delay: 0.6s; 
}
.loading__cube__container .loading__cube-4:before {
  -webkit-animation-delay: 0.9s;
          animation-delay: 0.9s;
}
@-webkit-keyframes loading-animation {
  0%, 10% {
    -webkit-transform: perspective(140px) rotateX(-180deg);
            transform: perspective(140px) rotateX(-180deg);
    opacity: 0; 
  } 25%, 75% {
    -webkit-transform: perspective(140px) rotateX(0deg);
            transform: perspective(140px) rotateX(0deg);
    opacity: 1; 
  } 90%, 100% {
    -webkit-transform: perspective(140px) rotateY(180deg);
            transform: perspective(140px) rotateY(180deg);
    opacity: 0; 
  } 
}

@keyframes loading-animation {
  0%, 10% {
    -webkit-transform: perspective(140px) rotateX(-180deg);
            transform: perspective(140px) rotateX(-180deg);
    opacity: 0; 
  } 25%, 75% {
    -webkit-transform: perspective(140px) rotateX(0deg);
            transform: perspective(140px) rotateX(0deg);
    opacity: 1; 
  } 90%, 100% {
    -webkit-transform: perspective(140px) rotateY(180deg);
            transform: perspective(140px) rotateY(180deg);
    opacity: 0; 
  }
}

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

html{
    scroll-behavior: smooth;
}

body{
    margin: 0 0 var(--header-height) 0;
    font-family: var(--body-font);
    font-size: var(--normal-font-size);
    background-color: var(--body-color);
    color: var(--text-color);
}

h1,
h2,
h3,
h4{
    color: var(--title-color);
    font-weight: var(--font-semi-bold);
}

ul{
    list-style: none;
}

a{
    text-decoration: none;
}

img{
    max-width: 100%;
    height: auto;
}

/* Layout */
.container{
    max-width: 768px;
    margin-left: var(--mb-1-5);
    margin-right: var(--mb-1-5);
}

.grid{
    display: grid;
    gap: 1.5rem;
}

.header{
    width: 100%;
    position: fixed;
    bottom: 0;
    left: 0;
    z-index: var(--z-fixed);
    background-color: var(--body-color);
}

/* Sections */
.section{
    padding: 2rem 0 4rem;
}

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

.section__subtitle{
    display: block;
    font-size: var(--small-font-size);
    margin-bottom: var(--mb-3);
}

.section__title,
.section__subtitle{
    text-align: center;
}

/* Button */
.button{
    display: inline-block;
    background-color: var(--first-color);
    color: #FFF;
    padding: 1rem;
    border-radius: .5rem;
    font-weight: var(--font-medium);
}

.button:hover{
    background-color: var(--first-color-alt);
}

.button__icon{
    font-size: 1.25rem;
    margin-left: var(--mb-0-5);
    transition: .3s;
}

.button__flex{
    display: inline-flex;
    align-items: center;
}

.button__transition-x:hover .button__icon{
    display: inline-block;
    transform: translateX(.15rem);
}

.button__transition-y:hover .button__icon{
    display: inline-block;
    transform: translateY(.15rem);
}

/* Navigation */
.nav{
    max-width: 968px;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo,
#nav-toggle{
    color: var(--title-color);
    font-weight: var(--font-medium);
}

.nav__logo:hover{
    color: var(--first-color);
}

#nav-toggle{
    font-size: 1.25rem;
    cursor: pointer;
}

#nav-toggle:hover{
    color: var(--first-color);
}

@media screen and (max-width: 767px) {
    .nav__menu{
        position: fixed;
        bottom: -100%;
        left: 0;
        width: 100%;
        background-color: var(--body-color);
        padding: 2rem 1.5rem 4rem;
        box-shadow: 0 -1px 4px rgba(0, 0, 0, .15);
        border-radius: 1.5rem 1.5rem 0 0;
        transition: .3s;
    }
}

.nav__list{
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.nav__link{
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: var(--small-font-size);
    color: var(--title-color);
    font-weight: var(--font-medium);
}

.nav__link:hover{
    color: var(--first-color);
}

.nav__icon{
    font-size: 1.2rem;
}

.nav__close{
    position: absolute;
    right: 1.3rem;
    bottom: .5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--first-color);
}

.nav__close:hover{
    color: var(--first-color-alt);
}

/* show menu */
.show-menu{
    bottom: 0;
}

/* Active link */
.active-link{
    color: var(--first-color);
}

.scroll-header{
    box-shadow: 0 -1px 4px rgba(0, 0, 0, .15);
}


/* Home Section */
.home__container{
    gap: 1rem;
}

.home__content{
    grid-template-columns: .5fr 3fr;
    padding-top: 3.5rem;
    align-items: center;
}

.home__social{
    display: grid;
    grid-template-columns: max-content;
    row-gap: 1rem;
}

.home__social-icon{
    font-size: 1.25rem;
    color: var(--first-color);
}

.home__social-icon:hover{
    color: var(--first-color-alt);
}

.home__blob{
    width: 200px; 
    fill: var(--first-color);
    filter: drop-shadow(0 12px 12px rgba(0, 0, 0, 0.15));
    transition: all 0.3s ease;
}

.home__blob:hover{
    transform: scale(1.05);
    filter: drop-shadow(0 16px 16px rgba(0, 0, 0, 0.2));
}

.home__blob-img{
    width: 130px;
    height: 150px;
    transform: translateX(0) translateY(0);
    object-fit: cover;
}

.home__data{
    grid-column: 1/3;
}

.home__title{
    font-size: var(--big-font-size);
}

.home__subtitle{
    font-size: var(--h3-font-size);
    color: var(--text-color);
    font-weight: var(--font-medium);
    margin-bottom: var(--mb-0-75);
}

.home__description{
    margin-bottom: var(--mb-2);
}

.home__scroll{
    display: none;
}

.home__scroll-button{
    color: var(--first-color);
    transition: .3s;
}

.home__scroll-button:hover{
    transform: translateY(.25rem);
}

.home__scroll-mouse{
    font-size: 2rem;
}

.home__scroll-name{
    font-size: var(--small-font-size);
    color: var(--title-color);
    font-weight: var(--font-medium);
    margin-right: var(--mb-0-25);
}

.home__scroll-arrow{
    font-size: 1.25rem;
}


/* About Section */
.about__img{
    width: 200px;
    border-radius: .5rem;
    justify-self: center;
    align-self: center;
}

.about__description{
    text-align: center;
    margin-bottom: var(--mb-2-5);
}

.about__info{
    display: flex;
    justify-content: space-evenly;
    margin-bottom: var(--mb-2-5);
}

.about__info-title{
    font-size: var(--h2-font-size);
    font-weight: var(--font-semi-bold);
    color: var(--title-color);
}

.about__info-name{
    font-size: var(--smaller-font-size);
}

.about__info-title,
.about__info-name{
    display: block;
    text-align: center;
}

.about__buttons{
    display: flex;
    justify-content: center;
}

.about__time{
    font-size: var(--smaller-font-size);
    font-weight: var(--font-medium);
    display: none;
}


/* Skills Section */
.skills__container{
    row-gap: 0;
}

.skills__header{
    display: flex;
    align-items: center;
    margin-bottom: var(--mb-2-5);
    cursor: pointer;
}

.skills__icon,
.skills__arrow{
    font-size: 2rem;
    color: var(--first-color);
}

.skills__icon{
    margin-right: var(--mb-0-75);
}

.skills__title{
    font-size: var(--h3-font-size);
}

.skills__subtitle{
    font-size: var(--small-font-size);
    color: var(--text-color-light);
}

.skills__arrow{
    margin-left: auto;
    transition: .4s;
}

.skills__title{
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--mb-0-5);
}

.skills__name{
    font-size: var(--normal-font-size);
    font-weight: var(--font-medium);
}

.skills__bar,
.skills__percentage{
    height: 5px;
    border-radius: .25rem;
}

.skills__bar{
    background-color: var(--first-color-lighter);
}

.skills__percentage{
    display: block;
    background-color: var(--first-color);
}

.skills__20{
    width: 20%;
}
.skills__40{
    width: 40%;
}
.skills__60{
    width: 60%;
}
.skills__70{
    width: 70%;
}
.skills__80{
    width: 80%;
}
.skills__90{
    width: 90%;
}
.skills__95{
    width: 95%;
}

.skills__close .skills__list{
    height: 0;
    overflow: hidden;
}

.skills__open .skills__list{
    height: max-content;
    margin-bottom: var(--mb-2-5);
}

.skills__open .skills__arrow{
    transform: rotate(-180deg);
}


/* Qualification Section */
.qualification__tabs{
    display: flex;
    justify-content: space-evenly;
    margin-bottom: var(--mb-2);
}

.qualification__button{
    font-size: var(--h3-font-size);
    font-weight: var(--font-medium);
    cursor: default;
    transition: .3s;
}

.qualification__button:hover{
    color: var(--first-color);
    transform: scale(1.05);
}

.qualification__icon{
    font-size: 1.8rem;
    margin-right: var(--mb-0-25);
}

.qualification__data{
    display: grid;
    grid-template-columns: 1fr max-content 1fr;
    column-gap: 1.5rem;
    margin-bottom: var(--mb-1);
}

.qualification__title{
    font-size: var(--normal-font-size);
    font-weight: var(--font-medium);
}

.qualification__subtitle{
    display: inline-block;
    font-size: var(--small-font-size);
    margin-bottom: var(--mb-0-5);
}

.qualification__calender{
    font-size: var(--smaller-font-size);
    flood-color: var(--text-color-light);
}

.qualification__rounder{
    display: inline-block;
    width: 13px;
    height: 13px;
    background-color: var(--first-color);
    border-radius: 50%;
}

.qualification__line{
    display: block;
    width: 1px;
    height: 100%;
    background-color: var(--first-color);
    transform: translate(6px, -7px);
}


/* Portfolio Section */
.portfolio__container{
    overflow: initial;
}

.portfolio__content{
    padding: 0 1.5rem;
}

.portfolio__img{
    width: 100%;
    border-radius: .5rem;
    justify-self: center;
}

.portfolio__title{
    font-size: var(--h3-font-size);
    margin-bottom: var(--mb-0-5);
}

.portfolio__description{
    margin-bottom: var(--mb-0-75);
    text-align: justify;
}

.portfolio__button:hover .button__icon{
    transform: translateX(.25rem);
}

.swiper-button-prev::after,
.swiper-button-next::after{
    content: '';
}

.swiper-portfolio-icon{
    font-size: 2rem;
    color: var(--first-color);
}

.swiper-button-prev{
    left: -.5rem;
}

.swiper-button-next{
    right: -.5rem;
}

.swiper-container-horizontal > .swiper-pagination-bullets{
    bottom: -2.5rem;
}

.swiper-pagination-bullet-active{
    background-color: var(--first-color);
}

.swiper-button-prev,
.swiper-button-next,
.swiper-pagination-bullet{
    outline: none;
}


/* Contact Section */
.contact__container{
    row-gap: 3rem;
}

.contact__information{
    display: flex;
    margin-bottom: var(--mb-2);
}

.contact__icon{
    font-size: 2rem;
    color: var(--first-color);
    margin-right: var(--mb-0-75);
    align-self: center;
}

.contact__title{
    font-size: var(--h3-font-size);
    font-weight: var(--font-medium);
}

.contact__subtitle{
    font-size: var(--small-font-size);
    color: var(--text-color-light);
}

.contact__content{
    background-color: var(--input-color);
    border-radius: .5rem;
    padding: .75rem 1rem .25rem;
}

.contact__label{
    font-size: var(--smaller-font-size);
    color: var(--title-color);
}

.contact__input__error{
    color: var(--first-color);
    font-weight: var(--font-medium);
}

.contact__input{
    width: 100%;
    background-color: var(--input-color);
    color: var(--text-color);
    font-family: var(--body-font);
    font-size: var(--normal-font-size);
    border: none;
    outline: none;
    padding: .25rem .5rem .5rem 0;
}

textarea.contact__input{
    resize: vertical;
    min-height: 100px;
}


/* Footer */
.footer{
    padding-top: 2rem;
}

.footer__bg{
    background-color: var(--first-color-second);
    padding: 2rem 0 3rem;
}

.footer__container{
    row-gap: 3.5rem;
}

.footer__title{
    font-size: var(--h1-font-size);
    margin-bottom: var(--mb-0-25);
}

.footer__subtitle{
    font-size: var(--small-font-size);
}

.footer__socials{
    margin-top: var(--mb-1)
}

.footer__social{
    font-size: 1.25rem;
    margin-right: var(--mb-1-5);
}

.footer__social:hover{
    color: var(--first-color-lighter)
}

.footer__links,
.footer__exchange__links{
    display: flex;
    flex-direction: column;
    row-gap: 1.5rem;
}

.footer__link:hover{
    color: var(--first-color-lighter);
}

.footer__link__title{
    font-size: var(--normal-font-size);
}


.footer__copy{
    font-size: var(--smaller-font-size);
    text-align: center;
    color: var(--text-color-light);
    margin-top: var(--mb-3);
}

.footer__title,
.footer__subtitle,
.footer__link,
.footer__social,
.footer__link__title{
    color: #FFF;
}


/* Scroll Up Button */
.scrollup{
    position: fixed;
    right: 1rem;
    bottom: -20%;
    background-color: var(--first-color);
    opacity: .8;
    padding: .3rem .3rem;
    border-radius: .4rem;
    z-index: var(--z-tooltip);
    transition: .4s;
}

.scrollup:hover{
    background-color: var(--first-color-alt);
}

.scrollup:hover .scrollup__icon{
    transform: translateY(-0.15rem);
}

.scrollup__icon{
    display: block;
    font-size: 1.5rem;
    color: #FFF;
}

/* Show scroll */
.show-scroll{
    bottom: 5rem;
}


/* Scroll Bar */
::-webkit-scrollbar{
    width: .60rem;
    background-color: var(--scroll-bar-color);
    border-radius: .5rem;
}

::-webkit-scrollbar-thumb{
    background-color: var(--scroll-thumb-color);
    border-radius: .5rem;
}

::-webkit-scrollbar-thumb:hover{
    background-color: var(--text-color-light);
}


/* Screen Compatible Setting */
@media screen and (max-width: 350px){
    .container{
        margin-left: var(--mb-1);
        margin-right: var(--mb-1);
    }

    .nav__menu{
        padding: 2rem .25rem 4rem;
    }
    .nav__list{
        column-gap: 0;
    }

    .home__content{
        grid-template-columns: .25fr 3fr;
    }
    .home__blob{
        width: 180px;
    }

    .skills__title{
        font-size: var(--normal-font-size);
    }

    .qualification__button{
        font-size: var(--h3-font-size);
    }
    .qualification__data{
        gap: .5rem;
    }
}


@media screen and (min-width: 568px) {
    .home__content{
        grid-template-columns: max-content 1fr 1fr;
    }
    .home__data{
        grid-column: initial;
    }
    .home__img{
        order: 1;
        justify-self: center;
    }

    .about__container,
    .skills__container,
    .portfolio__content,
    .contact__container,
    .footer__container{
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio__content{
        align-items: center;
    }

    .qualification__sections{
        display: grid;
        grid-template-columns: .9fr;
        justify-content: center;
    }

    .home__blob {
        width: 300px; 
    }
}


@media screen and (min-width: 768px) {
    .container{
        margin-left: auto;
        margin-right: auto;
    }

    body{
        margin: 0;
    }

    .section{
        padding: 6rem 0 2rem;
    }
    .section__subtitle{
        margin-bottom: 4rem;
    }

    .header{
        top: 0;
        bottom: initial;
    }

    .header,
    .main,
    .footer__container{
        padding: 0 2rem;
    }

    .nav{
        height: calc(var(--header-height) + 1.5rem);
        column-gap: 1rem;
    }
    .nav__icon,
    .nav__close,
    #nav-toggle{
        display: none;
    }
    .nav__list{
        display: flex;
        column-gap: 2rem;
    }
    .nav__menu{
        margin-left: auto;
    }
    .change-theme{
        margin: 0;
    }

    .home__container{
        row-gap: 5rem;
    }
    .home__content{
        padding-top: 5.5rem;
        column-gap: 2rem;
    }
    .home__blob{
        width: 270px;
    }
    .home__scroll{
        display: block;
    }
    .home__scroll-button{
        margin-left: 3rem;
    }

    .about__container{
        column-gap: 5rem;
    }
    .about__img{
        width: 350px;
    }
    .about__description{
        text-align: initial;
    }
    .about__info{
        justify-content: space-evenly;
    }
    .about__buttons{
        justify-content: initial;
    }

    .qualification__tabs{
        justify-content: space-evenly;
    }
    .qualification__button{
        margin: 0 var(--mb-1);
    }
    .qualification__sections{
        grid-template-columns: .8fr;
    }

    .portfolio__img{
        width: 320px;
    }
    .portfolio__content{
        align-items: center;
    }
    .footer__container{
        grid-template-columns: repeat(3, 1fr);
    }
    .footer__bg{
        padding: 3rem 0 3.5rem;
    }
    .footer__social{
        justify-self: flex-end;
    }
    .footer__copy{
        margin-top: 4.5rem;
    }
}


@media screen and (min-width: 1024px) {
    .header,
    .main,
    .footer__container{
        padding: 0;
    }

    .home__blob{
        width: 320px;
    }
    .home__social{
        transform: translateX(-6rem);
    }

    .portfolio__content{
        column-gap: 5rem;
    }
    .swiper-portfolio-icon{
        font-size: 3.5rem;
    }
    .swiper-button-prev{
        left: -3.5rem;
    }
    .swiper-button-next{
        right: -3.5rem;
    }
    .swiper-container-horizontal > .swiper-pagination-bullets{
        bottom: -4rem;
    }

    .contact__form{
        width: 460px;
    }
    .contact__inputs{
        grid-template-columns: repeat(2, 1fr);
    }


}