@import url("https://fonts.googleapis.com/css2?family=Fira+Sans:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");

.navbar-toggler,
.navbar-toggler:focus,
.navbar-toggler:active,
.navbar-toggler-icon:focus {
  outline: none;
  border: none;
  box-shadow: none;
}
.navbar {
  background-color: #004080;
}
.nav-link {
  font-size: 18px;
  position: relative;
  display: inline-block;
  color: #fff;
}

.nav-link::before {
  transition: 300ms;
  height: 3px;
  content: "";
  position: absolute;
  border-radius: 5px;
  background-color: #c7d4d5;
}
.nav-link:hover{
  color: #fff;
}
.nav-hover::before {
  width: 0%;
  bottom: 10px;
}

.nav-hover:hover::before {
  width: 70%;
}
.navbar-nav {
  justify-content: flex-start; /* Căn trái cho các mục trong navbar */
}

body {
  background-image: url("https://img.freepik.com/free-photo/blue-toned-collection-paper-sheets-with-copy-space_23-2148320445.jpg?w=900&t=st=1709066598~exp=1709067198~hmac=c5c0995a7289d90e1e59f33310d419716d3975cedc8f97a8f31c119f7619dcaf");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow-x: hidden;
}
body::-webkit-scrollbar-track {
  border-radius: 10px;
}

body::-webkit-scrollbar {
  width: 7px;
  /* background-color: #F5F5F5; */
}

body::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background-color: #004080;
}

body {
  font-family: "Fira Sans", sans-serif;
}

#home {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
#home a {
  color: #4873a7;
}
#home p {
  font-size: 25px;
}
#home i {
  cursor: pointer;
  transition: 0.5s;
}
#home i:hover {
  color: rgb(146, 146, 0);
}
#scrollBtn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
}
#skills i {
  height: 100px;
  width: 100px;
  background-color: whitesmoke;
  border-radius: 5px;
  box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
#skills i:hover {
  cursor: pointer;
  transform: scale(1.03);
}
/*=============== GOOGLE FONTS ===============*/
@import url("https://fonts.googleapis.com/css2?family=Bai+Jamjuree:ital,wght@0,200;0,300;0,400;0,500;0,600;0,700;1,200;1,300;1,400;1,500;1,600;1,700&display=swap");

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

  /*========== Colors ==========*/
  /*Color mode HSL(hue, saturation, lightness)*/
  --first-color: hsl(14, 98%, 50%);
  --black-color: hsl(0, 0%, 0%);
  --black-color-light: hsl(0, 0%, 40%);
  --white-color: hsl(0, 0%, 95%);
  --title-color: hsl(0, 0%, 0%);
  --text-color: hsl(0, 0%, 35%);
  --text-color-light: hsl(0, 0%, 64%);
  --body-color: hsl(0, 0%, 87%);
  --container-color: hsl(0, 0%, 83%);

  /*========== Font and typography ==========*/
  /*.5rem = 8px | 1rem = 16px ...*/
  --body-font: "Bai Jamjuree", sans-serif;
  --biggest-font-size: 2.5rem;
  --h1-font-size: 1.75rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1.125rem;
  --normal-font-size: 0.938rem;
  --small-font-size: 0.813rem;
  --smaller-font-size: 0.75rem;

  /*========== Font weight ==========*/
  --font-regular: 400;
  --font-medium: 500;
  --font-semi-bold: 600;
  --font-bold: 700;

  /*========== z index ==========*/
  --z-tooltip: 10;
  --z-fixed: 100;
}

/*========== Responsive typography ==========*/
@media screen and (min-width: 1150px) {
  :root {
    --biggest-font-size: 4.5rem;
    --h1-font-size: 3rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.875rem;
    --smaller-font-size: 0.813rem;
  }
}

/*=============== BASE ===============*/
* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--body-color);
  color: var(--text-color);
  transition: background-color .4s; /* Pour le Dark theme */
}

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

ul {
  list-style: none;
}

a {
  text-decoration: none;
}

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

/*=============== THEME ===============*/
.nav__buttons {
  display: flex;
  align-items: center;
  column-gap: 1rem;
}

.change-theme {
  font-size: 1.25rem;
  color: var(--title-color);
  cursor: pointer;
  transition: color .3s;
}

/*=============== REUSABLE CSS CLASSES ===============*/
.container {
  max-width: 1120px;
  margin-inline: 1.5rem;
}

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

.section {
  padding-block: 4rem 2rem;
}

.section__title-1,
.section__title-2 {
  position: relative;
  font-size: var(--h1-font-size);
  width: max-content;
  margin: 0.75rem auto 2rem;
}

.section__title-1 span,
.section__title-2 span {
  z-index: 5;
  position: relative;
}

.section__title-1::after,
.section__title-2::after {
  content: "";
  width: 40px;
  height: 28px;
  background-color: hsla(14, 98%, 50%, 0.2);
  position: absolute;
  top: -4px;
  right: -8px;
}

.section__title-2::after {
  top: initial;
  bottom: -4px;
}

.geometric-box {
  position: absolute;
  width: 20px;
  height: 20px;
  background-color: var(--first-color);
  rotate: -30deg;
}

.geometric-box::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 3px solid var(--black-color);
  left: -5px;
  top: -5px;
}

.main {
  overflow: hidden; /* For animation ScrollReveal */
}

/*=============== BUTTON ===============*/
.button {
  display: flex;
  align-items: center;
  justify-content: center;
  column-gap: 0.5rem;
}

.button {
  background-color: var(--black-color);
  padding: 1.1rem 1.5rem;
  color: var(--white-color);
  font-weight: var(--font-medium);
  border-radius: 0.75rem;
  transition: background-color 0.4s;
}

.button i {
  font-size: 1.25rem;
}

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

/*=============== PROJECTS ===============*/
.projects {
  background-color: #D9EDEE;
  transition: background-color 0.4s;
}

.projects__container {
  row-gap: 2rem;
}

.projects__card {
  padding: 1rem 1rem 2rem;
  border-radius: 0.75rem;
  transition: background-color 0.4s;
}

.projects__image {
  position: relative;
  margin-bottom: 0.75rem;
}

.projects__img {
  border-radius: 0.75rem;
  box-shadow: rgba(0, 0, 0, 0.2) 0px 8px 24px;
}

.projects__button {
  position: absolute;
  right: 1rem;
  bottom: -1.5rem;
  padding: 1rem;
}

.projects__content {
  margin-bottom: 1.25rem;
}

.projects__subtitle {
  position: relative;
  display: inline-block;
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
  color: var(--text-color);
  margin-bottom: 0.75rem;
  padding-left: 1.75rem;
}

.projects__subtitle::after {
  content: "";
  width: 20px;
  height: 1px;
  background-color: var(--text-color);
  position: absolute;
  left: 0;
  top: 50%;
}

.projects__title {
  font-size: var(--h3-font-size);
  margin-bottom: 0.75rem;
}

.projects__buttons {
  display: flex;
  align-items: center;
  column-gap: 1rem;
}

.projects__link {
  display: flex;
  align-items: center;
  column-gap: 0.25rem;
  color: var(--text-color);
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
  transition: color 0.4s;
}

.projects__link i {
  font-size: 1rem;
  color: var(--title-color);
  transition: color 0.4s;
}

.projects__link:hover,
.projects__link:hover i {
  color: var(--first-color);
}
.projects__card:hover {
  background-color: var(--white-color);
  border-radius: 0.75rem;
  box-shadow: rgba(0, 0, 0, 0.2) 0px 8px 24px;
}

/*=============== MEDIA QUERIES ===============*/
/* For small devices */
@media screen and (max-width: 340px) {
  .container {
    margin-inline: 1rem;
  }
}

/* For medium devices */
@media screen and (min-width: 576px) {
  .projects__container {
    grid-template-columns: 350px;
    justify-content: center;
  }
}

@media screen and (min-width: 768px) {
  .projects__container {
    grid-template-columns: repeat(2, 350px);
  }
}

/* For large devices */
@media screen and (min-width: 1150px) {
  .container {
    margin-inline: auto;
  }
  .section {
    padding-block: 7rem 2rem;
  }
  .section__title-1::after,
  .section__title-2::after {
    width: 70px;
    height: 48px;
  }
  .projects__container {
    grid-template-columns: repeat(3, 352px);
    padding-block: 3rem 1rem;
  }
  .projects__card {
    padding: 1.25rem 1.25rem 2.5rem;
  }
  .projects__image {
    margin-bottom: 1rem;
  }
  .projects__content {
    margin-bottom: 2rem;
  }
  .projects__buttons {
    right: 1.25rem;
  }
}
#education .education {
  cursor: pointer;
  box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
  background-color: rgba(46, 223, 193, 0.5);
}
#education .education:hover {
  transform: scale(1.02);
}

@media (max-width: 768px) {
  #home img {
    margin-bottom: 30px;
    width: 200px;
  }
  #home .col-md-8 {
    align-items: center;
    text-align: center;
    padding: 0px;
  }
  #home p {
    width: 100%;
    font-size: 18px;
  }
}
@media (max-width: 370px) {
  #home h1 {
    font-size: 25px;
  }
}
/* footer */
/*===== GOOGLE FONTS =====*/
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap");

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

  /*===== Colors =====*/
  --first-color: #3E0E12;
  --first-color-dark: #2F0A0D;
  --text-color: #524748;
  --first-color-light: #7B6F71;
  --first-color-lighten: #FBF9F9;

  /*===== Font and typography =====*/
  --body-font: 'Poppins', sans-serif;
  --biggest-font-size: 2.5rem;
  --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;
  --font-bold: 700;

  /*===== Margins =====*/
  --mb-1: .5rem;
  --mb-2: 1rem;
  --mb-3: 1.5rem;
  --mb-4: 2rem;
  --mb-5: 2.5rem;
  --mb-6: 3rem;

  /*===== z index =====*/
  --z-normal: 1;
  --z-tooltip: 10;
  --z-fixed: 100;
}
  
@media screen and (min-width: 768px){
  :root{
    --biggest-font-size: 4.5rem;
    --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;
  }
}

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

html{
  scroll-behavior: smooth;
}

body{
  margin: var(--header-height) 0 0 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
  background-color: var(--first-color-lighten);
  color: var(--text-color);
  line-height: 1.6;
}

h1,h2,h3,ul,p{
  margin: 0;
}

h2,h3{
  font-weight: var(--font-semi-bold);
}

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

a{
  text-decoration: none;
}

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

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

.section-title, .section-subtitle {
  text-align: center;
}

.section-title {
  font-size: var(--h1-font-size);
  color: var(--first-color);
  margin-bottom: var(--mb-3);
}

.section-subtitle {
  display: block;
  font-size: var(--smaller-font-size);
  font-weight: var(--font-semi-bold);
}


/*===== FOOTER =====*/
.footer {
  background-color: #5d7d9d;
  color: var(--first-color-lighten);
  text-align: center;
}

.footer__container {
  padding: 3rem 0;
}

.footer__title {
  font-size: var(--h1-font-size);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-semi-bold);
}

.footer__description {
  margin-bottom: var(--mb-3);
}

.footer__social {
  margin-bottom: var(--mb-6);
}

.footer__link {
  font-size: 1.4rem;
  color: var(--first-color-lighten);
  margin: 0 var(--mb-1);
  transition: .3s;
}

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

.footer__copy {
  font-size: var(--smaller-font-size);
  color: #dbbfbf;
}