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

/*=============== VARIABLE ===============*/
:root {
  --header-height: 3.5rem;

  --first-color: #4b7bec;
  --first-color-alt: #3867d6;
  --title-color: #222f3e;
  --text-color: #576574;
  --body-color: #f5f6fa;
  --container-color: #ffffff;
  --border-color: #e0e0e0;

  --body-font: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --big-font-size: 2.25rem;
  --h1-font-size: 1.75rem;
  --h2-font-size: 1.4rem;
  --h3-font-size: 1.1rem;
  --normal-font-size: 0.95rem;
  --small-font-size: 0.82rem;

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

  --z-fixed: 100;
}

@media screen and (min-width: 968px) {
  :root {
    --big-font-size: 3rem;
    --h1-font-size: 2rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.15rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.85rem;
  }
}

/*=============== RESET ===============*/
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--body-color);
  color: var(--text-color);
  transition: background-color 0.25s ease, color 0.25s ease;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--title-color);
  font-weight: var(--font-semi-bold);
  transition: color 0.25s ease;
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/*=============== LAYOUT & SECTION ===============*/
.container {
  max-width: 968px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

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

.main {
  overflow: hidden;
}

.section {
  padding: 4.5rem 0 3.5rem;
}

.section__title {
  text-align: center;
  font-size: var(--h2-font-size);
  margin-bottom: 0.5rem;
}

.section__subtitle {
  display: block;
  text-align: center;
  font-size: var(--small-font-size);
  color: var(--text-color);
  margin-bottom: 2.5rem;
}

/*=============== HEADER & NAV ===============*/
.header {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background-color: var(--body-color);
  z-index: var(--z-fixed);
  transition: 0.3s;
  box-shadow: 0 0 0 transparent;
}

.nav {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-weight: var(--font-semi-bold);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
}

.nav__buttons {
  display: flex;
  align-items: center;
  column-gap: 0.75rem;
}

/* icon theme */
.change-theme {
  font-size: 1.3rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.25s ease, transform 0.15s ease;
}

.change-theme:hover {
  color: var(--first-color);
  transform: translateY(-1px);
}

.nav__toggle,
.nav__close {
  font-size: 1.25rem;
  cursor: pointer;
}

/* Mobile menu */
.nav__menu {
  position: fixed;
  right: -100%;
  top: 0;
  width: 70%;
  height: 100vh;
  background-color: var(--container-color);
  padding: 5rem 1.5rem 2rem;
  box-shadow: -2px 0 12px rgba(0, 0, 0, 0.06);
  transition: 0.4s;
}

.nav__list {
  display: grid;
  row-gap: 1.75rem;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  column-gap: 0.5rem;
  font-size: var(--normal-font-size);
  color: var(--text-color);
  transition: color 0.25s ease;
}

.nav__link i {
  font-size: 1.2rem;
}

.nav__close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
}

/* Toggle class (untuk JS) */
.show-menu {
  right: 0;
}

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

/* Shadow ketika scroll (bisa diaktifkan lewat JS) */
.scroll-header {
  box-shadow: 0 1px 10px rgba(0, 0, 0, 0.08);
}

/*=============== HOME ===============*/
.home {
  padding-top: calc(var(--header-height) + 3rem);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.home__container {
  align-items: center;
}

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

.home__title {
  font-size: var(--big-font-size);
  margin: 0.25rem 0;
  line-height: 1.15;
}

.home__profession {
  font-size: var(--h3-font-size);
  color: var(--first-color);
  margin-bottom: 1rem;
}

.home__description {
  margin-bottom: 1.5rem;
  max-width: 420px;
}

.home__buttons {
  display: flex;
  flex-wrap: wrap;
  column-gap: 0.75rem;
  row-gap: 0.75rem;
  margin-bottom: 1.5rem;
}

/* Button */
.button {
  display: inline-flex;
  align-items: center;
  column-gap: 0.35rem;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  border: none;
  outline: none;
  background-color: var(--first-color);
  color: #ffffff;
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: 0.3s;
}

.button i {
  font-size: 1.1rem;
}

.button:hover {
  background-color: var(--first-color-alt);
  transform: translateY(-1px);
}

.button--ghost {
  background-color: transparent;
  border: 1px solid var(--first-color);
  color: var(--first-color);
}

.button--ghost:hover {
  background-color: rgba(75, 123, 236, 0.08);
}

/* Social */
.home__social {
  display: flex;
  column-gap: 0.75rem;
}

.home__social-link {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: 0.3s;
}

.home__social-link:hover {
  border-color: var(--first-color);
  color: var(--first-color);
}

/* Image */
.home__image {
  justify-self: center;
}

.home__img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid #ffffff;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

/*=============== ABOUT ===============*/
.about__container {
  row-gap: 2.5rem;
}

.about__image {
  justify-self: center;
}

.about__img {
  width: 220px;
  border-radius: 1.5rem;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.about__data {
  text-align: left;
}

.about__description {
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.about__info {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.about__info-title {
  display: block;
  font-size: var(--small-font-size);
  color: var(--text-color);
}

.about__info-name {
  font-size: 0.8rem;
  font-weight: var(--font-medium);
}

/*=============== SKILLS ===============*/
.skills__container {
  row-gap: 2rem;
}

.skills__content {
  padding: 1.5rem;
  background-color: var(--container-color);
  border-radius: 1.25rem;
  border: 1px solid var(--border-color);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.skills__title {
  font-size: var(--h3-font-size);
  margin-bottom: 1.2rem;
}

.skills__box {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 1.5rem;
}

.skills__group {
  display: grid;
  row-gap: 0.9rem;
}

.skills__data {
  display: flex;
  column-gap: 0.5rem;
  align-items: flex-start;
}

.skills__data i {
  font-size: 1.1rem;
  color: var(--first-color);
  margin-top: 0.1rem;
}

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

.skills__level {
  font-size: 0.78rem;
  color: var(--text-color);
}

/*=============== SERVICES ===============*/
.services__container {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.services__card {
  background-color: var(--container-color);
  border-radius: 1.25rem;
  padding: 1.6rem 1.5rem;
  border: 1px solid var(--border-color);
  text-align: left;
  transition: 0.3s;
}

.services__icon {
  font-size: 1.7rem;
  color: var(--first-color);
  margin-bottom: 0.75rem;
}

.services__title {
  font-size: var(--h3-font-size);
  margin-bottom: 0.45rem;
}

.services__description {
  font-size: var(--small-font-size);
  line-height: 1.6;
}

.services__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
}

/*=============== PROJECTS ===============*/
.projects__container {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.projects__card {
  background-color: var(--container-color);
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.projects__img {
  width: 100%;
  height: 170px;
  object-fit: cover;
}

.projects__data {
  padding: 1.3rem 1.4rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

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

.projects__description {
  font-size: var(--small-font-size);
  line-height: 1.6;
  flex: 1;
}

.projects__button {
  display: inline-flex;
  align-items: center;
  column-gap: 0.25rem;
  font-size: var(--small-font-size);
  color: var(--first-color);
}

.projects__button i {
  font-size: 1rem;
}

/*=============== CONTACT ===============*/
.contact__container {
  row-gap: 2rem;
}

.contact__info {
  display: grid;
  row-gap: 1.25rem;
}

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

.contact__details {
  font-size: var(--small-font-size);
  line-height: 1.6;
}

.contact__data {
  display: grid;
  row-gap: 0.9rem;
}

.contact__card {
  display: flex;
  align-items: center;
  column-gap: 0.75rem;
}

.contact__card-icon {
  font-size: 1.5rem;
  color: var(--first-color);
}

.contact__card-title {
  font-size: 0.85rem;
}

.contact__card-data {
  font-size: var(--small-font-size);
  color: var(--text-color);
}

.contact__form {
  background-color: var(--container-color);
  border-radius: 1.25rem;
  padding: 1.5rem 1.5rem 1.8rem;
  border: 1px solid var(--border-color);
  display: grid;
  row-gap: 1rem;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.contact__form-div {
  display: grid;
  row-gap: 0.35rem;
}

.contact__form-tag {
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
}

.contact__form-input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  background-color: transparent;
  font-family: var(--body-font);
  font-size: var(--small-font-size);
  outline: none;
  transition: 0.2s;
}

.contact__form-input:focus {
  border-color: var(--first-color);
}

.contact__form-area textarea {
  resize: none;
  min-height: 130px;
}

.contact__message {
  font-size: var(--small-font-size);
  color: var(--first-color);
  margin-top: 0.5rem;
  display: block;
  text-align: center;
}

/*=============== FOOTER ===============*/
.footer {
  background-color: var(--container-color);
  border-top: 1px solid var(--border-color);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.footer__container {
  padding: 2rem 0 2.2rem;
  text-align: center;
}

.footer__title {
  font-size: var(--h2-font-size);
}

.footer__subtitle {
  display: block;
  font-size: var(--small-font-size);
  color: var(--text-color);
  margin-bottom: 1rem;
}

.footer__social {
  display: flex;
  justify-content: center;
  column-gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer__social-link {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  transition: 0.3s;
}

.footer__social-link:hover {
  border-color: var(--first-color);
  color: var(--first-color);
}

.footer__copy {
  font-size: 0.78rem;
  color: var(--text-color);
}

/*=============== SCROLL UP ===============*/
.scrollup {
  position: fixed;
  right: 1.5rem;
  bottom: -20%;
  background-color: var(--first-color);
  padding: 0.5rem;
  border-radius: 0.85rem;
  display: inline-flex;
  z-index: var(--z-fixed);
  opacity: 0;
  transition: 0.3s;
}

.scrollup__icon {
  font-size: 1.15rem;
  color: #ffffff;
}

/* Class ini bisa ditambah lewat JS */
.show-scroll {
  bottom: 2rem;
  opacity: 1;
}

/*=============== DARK THEME ===============*/
body.dark-theme {
  --body-color: #0b1220;
  --container-color: #020617;
  --title-color: #e5e7eb;
  --text-color: #9ca3af;
  --border-color: #1f2937;
}

body.dark-theme .header {
  background-color: rgba(2, 6, 23, 0.95);
  backdrop-filter: blur(12px);
}

body.dark-theme .footer {
  background-color: #020617;
}

/*=============== RESPONSIVE ===============*/
@media screen and (max-width: 350px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

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

  .home__buttons {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media screen and (min-width: 576px) {
  .home__container {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .about__container {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
  }

  .contact__container {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

@media screen and (min-width: 768px) {
  .section {
    padding: 5rem 0 4rem;
  }

  .nav__menu {
    width: 250px;
  }
}

@media screen and (min-width: 968px) {
  .header {
    background-color: rgba(245, 246, 250, 0.9);
    backdrop-filter: blur(12px);
  }

  .nav {
    column-gap: 2rem;
  }

  .nav__menu {
    position: initial;
    width: auto;
    height: auto;
    background-color: transparent;
    box-shadow: none;
    padding: 0;
  }

  .nav__list {
    display: flex;
    column-gap: 1.8rem;
    align-items: center;
  }

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

  .nav__toggle,
  .nav__close {
    display: none;
  }

  .home {
    padding-top: calc(var(--header-height) + 4rem);
  }

  .home__img {
    width: 260px;
    height: 260px;
  }

  .about__img {
    width: 260px;
  }

  .skills__container {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}