/*==================== GOOGLE FONTS ====================*/ 
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap');

/*==================== VARIABLES CSS ====================*/
:root {
    --header-height: 3rem;

    /*========== Colors ==========*/
    /* Change favorite color */
    --hue-color: 280; /*Purple 250 - Green 142 - Blue 230 - Pink 340*/

    /* HSL color mode */
    --first-color: hsl(var(--hue-color), 69%, 45%);
    --first-color-second: hsl(var(--hue-color), 69%, 40%);
    --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%);

    /*========== Font and typography ==========*/
    --body-font: 'Poppins', sans-serif;

    /* .5rem = 8px, 1rem = 16px, 1.5rem = 24px ... */
    --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 weight ==========*/
    --font-medium: 500;
    --font-semi-bold: 600;

    /*========== Margin Bottom ==========*/
    /* .25rem = 4px, .5rem = 8px, .75rem = 12px ... */
    --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;
    }
}

/* Variables Dark Theme */
body.dark-theme {
  --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%);
}

/* Button Dark/Light */
.nav_btns {
  display: flex;
  align-items: center;
}

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

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

/*==================== BASE ====================*/
* {
  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;
}

/*==================== REUSABLE CSS CLASSES ====================*/
.section {
  padding: 2rem 0 4rem;
}

.section_title {
  font-size: var(--h1-font-size);
  color: var(--title-color);
}

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

.section_title, 
.section_subtitle {
  text-align: center;
}

/*==================== 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);
}

/*==================== NAV ====================*/
.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);
  transition: 0.3s;
}

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

.nav_toggle{
  font-size: 1.1rem;
  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%;
    padding: 2rem 1.5rem 4rem;
    background-color: var(--body-color);
    box-shadow: 0 -1px 4px rgba(0, 0, 0, .15);
    transition: .3s;
    border-radius: 1.5rem 1.5rem 0 0;
  }
}

.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);
  transition: 0.3s;
}

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

.nav_icons{
  font-size: 1.2rem;
}

.nav_close{
  position: absolute;
  right: 1.3rem;
  bottom: 0.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--first-color);
}

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

.external-svg{
  width: 2.5rem;
  height: 2.5rem;
  fill: var(--first-color);
}
.leetcode{
  width: 2rem;
  height: 2rem;
  fill: var(--first-color);
  transition: 0.3s;
}
.leetcode:hover{
  fill:var(--first-color-alt);
}

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

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

/* Change background header */
.scroll-header {
  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.15);
}

/*==================== HOME ====================*/
.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: 2rem;
  color: var(--first-color);
  transition: .3s;
}

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

.home_blob {
  width: 200px;
  fill: var(--first-color);
}
.home_blob-img {
  width: 820px;
}

.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: 0.3s;
}

.home_scroll-button:hover {
  transform: translateY(0.25rem);
}

.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;
}

/*==================== BUTTONS ====================*/
.button {
  display: inline-block;
  background-color: var(--first-color);
  color: #fff;
  padding: 0.8rem;
  border-radius: 0.5rem;
  font-weight: var(--font-medium);
  font-family: inherit;
  transition: 0.3s;
  border: 0;
}

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

.button_icon {
  font-size: 1.25rem;
  margin-left: var(--mb-0-5);
  transition: 0.3s;
}

.button--flex {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/*==================== ABOUT ====================*/
.about_img {
  width: 200px;
  border-radius: 0.5rem;
  justify-self: center;
  align-self: center;
}

.about_description {
  text-align: center;
  margin-bottom: var(--mb-1-5);
}

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

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

/*==================== SKILLS ====================*/
.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;
  font-weight: bolder;
  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: 0.4s;
}

.skills_list {
  row-gap: 1.5rem;
  padding-left: 2.7rem;
}

.skills_titles {
  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);
}

.single_skill_icon {
  color: var(--first-color);
  font-size: var(--h1-font-size);
}

.external-logo {
  width: var(--h1-font-size);
}

.skills_bar {
  height: 5px;
  border-radius: 0.25rem;
  background-color: var(--first-color);
}

.skills_list {
  height: 0;
  overflow: hidden;
}

.skills_open .skills_list {
  height: max-content;
  margin-bottom: var(--mb-2-5);
  transition: 0.3s;
}

.skills_open .skills_arrow {
  transform: rotate(-180deg);
}

/*==================== QUALIFICATION ====================*/
.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);
  color: var(--first-color);
  cursor: pointer;
}

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

.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;
}

.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-1); */
}

.qualification_subtitle a {
  color: inherit;
}

.qualification_grade{
  font-size: var(--smaller-font-size);
  font-weight: var(--font-semi-bold);
}

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

.qualification_circle {
  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);
}

.qualification-content {
  display: block;
}

.qualification-inactive {
  display: none;
}



/* Active Modal */


/*==================== PORTFOLIO ====================*/
.portfolio_container {
  overflow: initial;
}

.portfolio_content {
  padding: 0 2.5rem;
}

.portfolio_img {
  width: 256px;
  border-radius: 0.5rem;
  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);
}

.portfolio_button:hover .button_icon {
  transform: translateX(0.25rem);
}


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

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

.swiper-button-prev {
  left: -0.5rem;
}

.swiper-button-next {
  right: -0.5rem;
}

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

.swiper-pagination{
  position: static;
}

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

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

/*==================== CONTACT ME ====================*/
.contact_container {
  row-gap: 3rem;
}

.contact_info {
  display: flex;
  margin-bottom: var(--mb-2);
  align-items: flex-start;
  transition: .3s;
}
.contact_info:hover{
  transform: translateY(-0.25rem);
}

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

.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: 0.5rem;
  padding: 0.75rem 1rem 0.25rem;
  border: var(--first-color) 2px solid;
}

.contact_content.focusIn.valid {
  border-color: #7fff00;
}

.contact_content.focusIn.invalid {
  border-color: #ff4500;
}

.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: 0.25rem 0.5rem 0.5rem 0;
}

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

.alert_style {
  text-align: center;
  padding: 10px;
  font-size: var(--small-font-size);
  background-color: var(--first-color);
  color: #fff;
  border-radius: 0.5rem;
  display: none;
}

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

.footer_container {
  row-gap: 3.5rem;
}

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

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

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

.footer_links {
  display: flex;
  flex-direction: column;
  row-gap: 1.5rem;
}

.footer_title,
.footer_subtitle,
.footer_link,
.footer_social {
  color: #fff;
  transition: .3s;
}

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

.footer_social {
  font-size: 2rem;
  margin-right: var(--mb-1-5);
}

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

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

/*========== SCROLL UP ==========*/
.scrollup {
  position: fixed;
  right: 1rem;
  bottom: -20%;
  background-color: var(--first-color);
  opacity: 0.8;
  padding: 0 0.3rem;
  border-radius: 0.4rem;
  z-index: var(--z-tooltip);
  transition: 0.4s;
}

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

.scrollup_icon {
  font-size: 1.5rem;
  color: #fff;
}

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

/*========== SCROLL BAR ==========*/
::-webkit-scrollbar {
  width: 0.6rem;
  background-color: var(--scroll-bar-color);
  border-radius: 0.5rem;
}

::-webkit-scrollbar-thumb {
  background-color: var(--scroll-thumb-color);
  border-radius: 0.5rem;
}

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


/*==================== MEDIA QUERIES ====================*/
/* For small devices */
@media screen and (max-width: 350px) {
  .container {
    margin-left: var(--mb-1);
    margin-right: var(--mb-1);
  }

  .nav_menu {
    padding: 2rem 0.25rem 4rem;
  }

  .nav_list {
    column-gap: 0;
  }

  .home_content {
    grid-template-columns: 0.25fr 3fr;
  }

  .home_blob {
    width: 180px;
  }

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

  .qualification_data {
    gap: 0.5rem;
  }

  .portfolio-img {
    width: 200px;
  }
}

/* For medium devices */
@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,
  .contact_container,
  .footer_container,
  .portfolio_content {
    grid-template-columns: repeat(2, 1fr);
  }

  .qualification_sections {
    display: grid;
    grid-template-columns: 0.6fr;
    justify-content: center;
  }
}

@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;
    /* position: static; */
  }

  .header,
  .main,
  .footer_container {
    padding: 0 1rem;
  }

  .nav {
    height: calc(var(--header-height) + 1.5rem);
    column-gap: 1rem;
  }

  .nav_icons,
  .nav_close,
  .nav_toggle {
    display: none;
  }

  .nav_list {
    display: flex;
    column-gap: 2rem;
  }

  .nav_menu {
    margin-left: auto;
  }

  .change-theme {
    margin: 0;
    margin-left: 4rem;
    transition: 0.3s;
  }

  .home_container {
    row-gap: 3rem;
  }

  .home_content {
    padding-top: 3.5rem;
    column-gap: 2rem;
  }

  .home_blob {
    width: 270px;
  }

  .home_scroll {
    display: block;
  }

  .home_scroll-button {
    margin-left: 35rem;
  }

  .about_container {
    column-gap: 5rem;
  }

  .about_img {
    width: 350px;
  }

  .about_description {
    text-align: initial;
  }

  .about_button {
    justify-content: initial;
  }

  .skills_container,
  .about_container {
    grid-template-columns: repeat(2, 1fr);
  }

  .qualification_tabs {
    justify-content: center;
  }

  .qualification_button {
    margin: 0 var(--mb-1);
  }

  .qualification_sections {
    grid-template-columns: 0.5fr;
  }

  .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_links {
    flex-direction: row;
    column-gap: 1rem;
  }

  .footer_socials {
    justify-self: flex-end;
  }

  .footer_copy {
    margin-top: 4.5rem;
  }
}

/* For large devices */
@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: -4.5rem;
  }

  .contact_form {
    width: 460px;
  }

  .contact_inputs {
    grid-template-columns: repeat(2, 1fr);
  }
}