* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "Roboto Mono", monospace;
  background-color: var(--background-cl);
  color: var(--text-cl);
}

/* variable */
:root {
  --text-cl: rgb(255, 255, 255);
  --background-cl: #030615;
}
/* ==================common=================== */

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

.main__container {
  width: 1250px;
  max-width: calc(100% - 48px);
  margin-left: auto;
  margin-right: auto;
  /* background-color: var(--background-cl); */
}

.btn {
  width: 150px;
  height: 50px;
  border-radius: 50px;
  font-family: inherit;
}
/* ==================header=================== */
.header {
  background-color: var(--background-cl);
  margin-bottom: 50px;
}
.fixed {
  position: fixed;
  width: 100%;
  top: 0px;
}
.header .body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  font-family: "Press Start 2P", system-ui;
  /* background-color: var(--background-cl); */
}

.header .logo {
  font-family: "Press Start 2P", system-ui;
  color: var(--text-cl);
  cursor: default;
  font-size: 1.125rem;
}

.nav ul {
  display: flex;
  gap: 40px;
}

.nav li {
  list-style-type: none;
  transition: 0.5s;
}

.nav a:hover {
  text-decoration: underline;
  color: rgba(240, 248, 255, 0.523);
}

/* ==================Hero banner=================== */
.hero__banner {
  margin-top: 200px;
}

.hero__section {
  text-align: center;
}

.hero__desc {
  margin: 20px;
}

.hero__section .hero__heading {
  font-family: "Press Start 2P", system-ui;
  font-size: 1.5rem;
  transition: all 0.5s;
}

.hero__section .hero__icon {
  display: flex;
  justify-content: center;
}

.hero__icon .hero__icon--social {
  width: 50px;
  height: auto;
  background-color: var(--text-cl);
  border-radius: 50%;
  margin: 10px;
  box-shadow: 2px 2px 4px rgba(23, 37, 84, 0.4),
    8px 8px 8px rgba(23, 37, 84, 0.2);
  cursor: pointer;
  transition: 0.5s;
}

.hero__section .hero__heading:hover {
  letter-spacing: 5px;
}

.hero__icon .hero__icon--social:hover {
  transform: scale(1.2);
}

.btn-hero {
  margin-top: 40px;
  transition: 0.2s;
}
.btn-hero:hover {
  transform: translateY(-10px);
}

/* ==================My skills=================== */
.section__skills {
  margin-top: 150px;
}

.main__technical-skill {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.section__main-skill .skill__item li {
  list-style: none;
  display: flex;
  align-items: center;
}
.section__main-skill .skill__item .icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  margin: 10px 10px 10px 5px;
}

.heading__h2 {
  margin: 40px 0;
  font-family: "Press Start 2P", system-ui;
  text-align: center;
}

.skill__heading {
  font-family: "Press Start 2P", system-ui;
  font-size: 1rem;
}

/* ==================My project=================== */
.section__project {
  margin-top: 200px;
}

.project__container img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 1/1;
  border: 20px solid black;
  border-radius: 10px;
  transition: 0.2s;
}

.project__container img:hover {
  transform: scale(1.1);
}

.project__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  column-gap: 50px;
}

.project__container-desc {
  justify-items: center;
  align-items: center;
}

.project__desc-heading,
.project__desc {
  margin: 20px;
}

.btn__livedemo {
  cursor: pointer;
  transition: 0.2s;
}

.btn__livedemo:hover {
  background-color: aliceblue;
  color: #030615;
  transform: translateY(-5px);
}

/* ==================About me=================== */
.section__about {
  margin-top: 200px;
}
.about__media .about__profile {
  max-width: 100%;
  object-fit: cover;
  height: auto;
  aspect-ratio: 1/1;
  border-radius: 20px;
}

.icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
}

.about__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.about__desc-right {
  display: flex;
  justify-content: space-evenly;
  gap: 40px;
}

.about__education,
.about__experience {
  width: 250px;
  height: 150px;
  border: 1px solid black;
  border-radius: 10px;
  background-color: aliceblue;
  color: #030615;
  text-align: center;
}

.about__desc-para {
  margin: 40px;
}

/* ==================contact me block==================== */
.contact__me {
  margin-top: 200px;
}

#email {
  border-radius: 10px;
  width: 100%;
  max-width: 580px;
  height: 40px;
  /* margin: 1rem; */
}

textarea {
  width: 100%;
  max-width: 580px;
  height: 200px;
  resize: none; /* ❌ không thể kéo rộng hay cao */
  border-radius: 20px;
  /* margin-top: 20px; */
}

.form__contact {
  display: flex;
  flex-direction: row;
  justify-content: center;
}
.form__contact form {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 1rem;
}

.form__control label {
  display: block;
  margin: 10px 0 10px;
}

.form__btn {
  display: block;
  margin: 0 auto;
}

/* ==================contact me block==================== */
.footer {
  margin-top: 100px;
}

.footer__nav,
.footer__container p {
  text-align: center;
  margin: 0 auto;
  width: 100%;
}