/*=============== GOOGLE FONTS ===============*/
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");

/*=============== CSS VARIABLES ===============*/
:root {
  --header-height: 3.5rem;
  --hue: 207;
  --first-color: hsl(var(--hue), 90%, 58%);
  --first-color-alt: hsl(var(--hue), 90%, 54%);
  --title-color: hsl(var(--hue), 4%, 15%);
  --text-color: hsl(var(--hue), 4%, 35%);
  --text-color-light: hsl(var(--hue), 4%, 55%);
  --body-color: hsl(var(--hue), 0%, 100%);
  --container-color: #fff;
  --scroll-bar-color: hsl(var(--hue), 4%, 85%);
  --scroll-thumb-color: hsl(var(--hue), 4%, 75%);
  --body-font: "Poppins", sans-serif;
  --big-font-size: 2rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1rem;
  --normal-font-size: 0.938rem;
  --small-font-size: 0.813rem;
  --smaller-font-size: 0.75rem;
  --font-medium: 500;
  --font-semi-bold: 600;
  --font-bold: 700;
  --mb-0-5: 0.5rem;
  --mb-0-75: 0.75rem;
  --mb-1: 1rem;
  --mb-1-5: 1.5rem;
  --mb-2: 2rem;
  --mb-2-5: 2.5rem;
  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;
}

@media screen and (min-width: 968px) {
  :root {
    --big-font-size: 3.5rem;
    --h1-font-size: 2.25rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.875rem;
    --smaller-font-size: 0.813rem;
  }
}

body.dark-theme {
  --title-color: hsl(var(--hue), 4%, 95%);
  --text-color: hsl(var(--hue), 4%, 75%);
  --body-color: hsl(var(--hue), 8%, 12%);
  --container-color: hsl(var(--hue), 8%, 16%);
  --scroll-bar-color: hsl(var(--hue), 4%, 32%);
  --scroll-thumb-color: hsl(var(--hue), 4%, 24%);
}

/*=============== BASE ===============*/
* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: var(--header-height) 0 0 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--body-color);
  color: var(--text-color);
  transition: 0.5s;
}
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: 4.5rem 0 2rem;
}
.section__title,
.section__subtitle {
  text-align: center;
}
.section__title {
  font-size: var(--h2-font-size);
  margin-bottom: var(--mb-0-5);
}
.section__subtitle {
  display: block;
  font-size: var(--small-font-size);
  color: var(--text-color-light);
  margin-bottom: var(--mb-2-5);
}
.container {
  max-width: 968px;
  margin-left: var(--mb-1-5);
  margin-right: var(--mb-1-5);
}
.grid {
  display: grid;
}
.main {
  overflow: hidden;
}

/*=============== HEADER & NAV ===============*/
.header {
  width: 100%;
  background-color: var(--body-color);
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-fixed);
  transition: 0.5s;
}
.nav {
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav__logo {
  color: var(--title-color);
  font-weight: var(--font-bold);
  font-size: 1.25rem;
}
.nav__menu {
  position: fixed;
  bottom: 1rem;
  width: 90%;
  background-color: var(--container-color);
  box-shadow: 0 4px 12px hsla(var(--hue), 30%, 8%, 0.2);
  padding: 1rem 0;
  border-radius: 0.5rem;
  left: 0;
  right: 0;
  margin: 0 auto;
}
.nav__list {
  display: flex;
  justify-content: space-around;
  align-items: center;
}
.nav__link {
  color: var(--text-color);
  font-weight: var(--font-medium);
  display: grid;
  justify-items: center;
  row-gap: 0.25rem;
}
.nav__link i {
  font-size: 1.25rem;
}
.nav__link span {
  font-size: var(--smaller-font-size);
}
.active-link {
  color: var(--first-color);
}
.scroll-header {
  box-shadow: 0 1px 4px hsla(var(--hue), 4%, 15%, 0.1);
}
.theme-toggle {
  font-size: 1.25rem;
  color: var(--title-color);
  cursor: pointer;
}

/*=============== HOME ===============*/
.home {
  padding-top: 2rem;
}
.home__container {
  height: calc(100vh - var(--header-height));
  align-content: center;
  row-gap: 2.5rem;
}
.home__data {
  text-align: center;
}
.home__greeting {
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
  margin-bottom: var(--mb-0-5);
  display: block;
}
.home__title {
  font-size: var(--big-font-size);
  margin-bottom: var(--mb-0-5);
}
.home__subtitle {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  margin-bottom: var(--mb-1-5);
}
.home__description {
  margin-bottom: var(--mb-2-5);
}
.home__buttons {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}
.button {
  display: inline-block;
  background-color: var(--first-color);
  color: #fff;
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: var(--font-medium);
  transition: 0.3s;
  border: none;
  cursor: pointer;
}
.button:hover {
  background-color: var(--first-color-alt);
}
.button--flex {
  display: inline-flex;
  align-items: center;
}
.button--ghost {
  background-color: transparent;
  border: 2px solid var(--first-color);
  color: var(--first-color);
}
.button--ghost:hover {
  background-color: var(--first-color);
  color: #fff;
}
.button__icon {
  margin-left: var(--mb-0-5);
}

/*=============== ABOUT ===============*/
.about__container {
  row-gap: 2.5rem;
}
.about__img {
  width: 220px;
  border-radius: 1.5rem;
  justify-self: center;
}
.about__data {
  text-align: left;
}
.about__data .section__title,
.about__data .section__subtitle {
  text-align: left;
}
.about__data .section__subtitle {
  margin-bottom: var(--mb-1);
}
.about__description {
  margin-bottom: var(--mb-2);
}
.about__section-title {
  font-size: var(--h2-font-size);
  text-align: center;
  margin-top: var(--mb-2-5);
  margin-bottom: var(--mb-2);
}

/*=============== SKILLS ===============*/
.skills__container {
  row-gap: 2rem;
}
.skills__content {
  background-color: var(--container-color);
  padding: 1.5rem;
  border-radius: 0.5rem;
}
.skills__header {
  display: flex;
  align-items: center;
  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: 0.4s;
}
.skills__list {
  row-gap: 1.5rem;
  padding-top: 1.5rem;
}
.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);
}
.skills__bar,
.skills__percentage {
  height: 5px;
  border-radius: 0.25rem;
}
.skills__bar {
  background-color: hsl(var(--hue), 90%, 80%);
}
.skills__percentage {
  display: block;
  background-color: var(--first-color);
  transition: width 2s ease-in-out;
}
.skills__content .skills__list {
  height: 0;
  overflow: hidden;
  transition: all 0.25s ease;
}
.skills-open .skills__list {
  height: max-content;
}
.skills-open .skills__arrow {
  transform: rotate(-180deg);
}

/*=============== QUALIFICATION ===============*/
.qualification__tabs {
  display: flex;
  justify-content: center;
  margin-bottom: var(--mb-2);
}
.qualification__button {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
  color: var(--title-color);
  margin: 0 var(--mb-1);
  cursor: pointer;
}
.qualification__button:hover {
  color: var(--first-color);
}
.qualification__icon {
  font-size: 1.8rem;
  margin-right: var(--mb-0-5);
}
.qualification__active {
  color: var(--first-color);
}
.qualification__sections {
  display: grid;
  justify-content: center;
}
.qualification__content {
  display: none;
}
.qualification__content-active {
  display: block;
}
.qualification__data {
  position: relative;
}
.qualification__header {
  display: grid;
  grid-template-columns: 1fr max-content 1fr;
  column-gap: 1.5rem;
  cursor: pointer;
  align-items: center;
}
.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__calendar {
  font-size: var(--smaller-font-size);
}
.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);
}
.qualification__arrow {
  font-size: 2rem;
  color: var(--first-color);
  transition: 0.4s;
  position: absolute;
  right: -2rem;
  top: 50%;
  transform: translateY(-50%);
}
.qualification__details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
}
.qualification__details-list {
  padding-top: var(--mb-1);
  padding-left: 3.5rem;
  row-gap: 0.75rem;
  display: grid;
}
.qualification__details-item {
  font-size: var(--small-font-size);
  display: flex;
  align-items: flex-start;
}
.qualification__details-icon {
  font-size: 1rem;
  color: var(--first-color);
  margin-right: var(--mb-0-5);
  transform: translateY(3px);
}
.qualification-open .qualification__details {
  max-height: 500px;
  margin-bottom: var(--mb-2);
}
.qualification-open .qualification__arrow {
  transform: translateY(-50%) rotate(180deg);
}

/*=============== PROJECTS ===============*/
.projects__filters {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.projects__filter-item {
  cursor: pointer;
  color: var(--title-color);
  padding: 0.5rem 1rem;
  font-weight: var(--font-medium);
  border-radius: 0.5rem;
}
.projects__filter-item.active-filter {
  background-color: var(--first-color);
  color: #fff;
}
.projects__container {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  justify-content: center;
}
.project__card {
  background-color: var(--container-color);
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 4px 12px hsla(var(--hue), 30%, 8%, 0.2);
  transition: transform 0.3s;
}
.project__card:hover {
  transform: translateY(-0.5rem);
}
.project__img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.project__data {
  padding: 1.25rem;
}
.project__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-0-5);
}
.project__description {
  font-size: var(--small-font-size);
  margin-bottom: var(--mb-1);
}
.project__link {
  color: var(--first-color);
  font-weight: var(--font-medium);
}

/*=============== CONTACT ===============*/
.contact__container {
  row-gap: 3rem;
}
.contact__content {
  text-align: center;
}
.contact__info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: var(--mb-2);
}
.contact__card {
  background-color: var(--container-color);
  padding: 1rem;
  border-radius: 0.75rem;
  text-align: center;
  flex: 1;
  min-width: 200px;
}
.contact__card-icon {
  font-size: 2rem;
  color: var(--title-color);
  margin-bottom: var(--mb-0-5);
}
.contact__card-title,
.contact__card-data {
  font-size: var(--small-font-size);
}
.contact__card-title {
  font-weight: var(--font-medium);
}
.contact__card-data {
  display: block;
  margin-bottom: var(--mb-0-75);
}

/*=============== FOOTER ===============*/
.footer {
  background-color: var(--first-color);
  padding: 2rem 0 6rem;
}
.footer__container {
  text-align: center;
}
.footer__title {
  color: #fff;
  font-size: var(--h1-font-size);
  margin-bottom: var(--mb-1);
}
.footer__list {
  display: flex;
  justify-content: center;
  column-gap: 1.5rem;
  margin-bottom: var(--mb-2);
}
.footer__link {
  color: #fff;
}
.footer__socials {
  display: flex;
  justify-content: center;
  column-gap: 1.25rem;
  margin-bottom: var(--mb-2);
}
.footer__social-link {
  background-color: var(--body-color);
  color: var(--first-color);
  padding: 0.25rem;
  border-radius: 0.25rem;
  font-size: 1.25rem;
  display: inline-flex;
}
.footer__copy {
  color: #fff;
  font-size: var(--smaller-font-size);
}

/*=============== SCROLL UP ===============*/
.scrollup {
  position: fixed;
  right: 1rem;
  bottom: -20%;
  background-color: var(--first-color);
  padding: 0.5rem;
  border-radius: 0.4rem;
  z-index: var(--z-tooltip);
  opacity: 0.8;
  transition: 0.4s;
}
.scrollup:hover {
  opacity: 1;
}
.scrollup__icon {
  font-size: 1.2rem;
  color: #fff;
}
.show-scroll {
  bottom: 7rem;
}

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

/*=============== MEDIA QUERIES ===============*/
@media screen and (max-width: 320px) {
  .container {
    margin-left: var(--mb-1);
    margin-right: var(--mb-1);
  }
  .nav__menu {
    padding: 1rem 0.25rem;
  }
  .nav__list {
    column-gap: 0;
  }
  .qualification__data {
    gap: 0.5rem;
  }
}
@media screen and (min-width: 576px) {
  .nav__menu {
    width: 380px;
  }
  .about__container {
    grid-template-columns: 0.8fr;
    justify-content: center;
  }
  .qualification__sections {
    grid-template-columns: 0.6fr;
  }
  .projects__container {
    grid-template-columns: repeat(2, 280px);
  }
}
@media screen and (min-width: 767px) {
  body {
    margin: 0;
  }
  .section {
    padding: 7rem 0 2rem;
  }
  .home {
    padding-top: 0;
  }
  .nav {
    height: calc(var(--header-height) + 1.5rem);
  }
  .nav__menu {
    position: initial;
    background-color: var(--body-color);
    box-shadow: none;
    width: auto;
    padding: 0;
  }
  .nav__list {
    column-gap: 3rem;
  }
  .nav__link {
    color: var(--text-color);
  }
  .nav__link span {
    font-size: var(--normal-font-size);
  }
  .nav__link i {
    display: none;
  }
  .home__container {
    height: 100vh;
  }
  .about__container {
    grid-template-columns: 0.5fr 1fr;
    align-items: center;
    column-gap: 5rem;
  }
  .about__img {
    width: 350px;
  }
  .about__data {
    text-align: initial;
  }
  .footer {
    padding: 3rem 0;
  }
  .scrollup {
    right: 3rem;
  }
  .show-scroll {
    bottom: 3rem;
  }
}
@media screen and (min-width: 992px) {
  .container {
    margin-left: auto;
    margin-right: auto;
  }
  .section__title {
    margin-bottom: 0.75rem;
  }
  .section__subtitle {
    margin-bottom: 3.5rem;
  }
  .home__container {
    row-gap: 5rem;
  }
  .qualification__sections {
    grid-template-columns: 0.5fr;
  }
  .projects__container {
    grid-template-columns: repeat(3, 280px);
    gap: 3rem;
  }
  .qualification__arrow {
    right: -3rem;
  }
}