index.css

@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;700&display=swap');

* {
    box-sizing: border-box;
}

/* CUSTOM PROPERTIES */
:root {
    --ff-primary: 'Roboto Mono', sans-serif;
    --ff-secondary: 'Roboto Mono', monospace;
    
    --fw-reg: 400;
    --fw-bold: 700;

    --clr-light: #fff;
    --clr-dark: #164a41;
    --clr-light-dark: #164a4188;
    --clr-accent:#F1b24a;
    --clr-dark-fade: rgba(22, 74, 65, 0.3); 

    --fs-h1: 2.75rem;
    --fs-h2: 2.25rem;
    --fs-h3: 1.25rem;
    --fs-h4: 1.125rem;
    --fs-body: 1rem;
    --fs-subtitle: .825rem;

    --bs: 0.25em 0.25em 0.75em rgba(0,0,0,.25),
          0.125em 0.125em 0.25em rgba(0,0,0,.15);

    --br: 6px;
}

@media (min-width: 800px) {
    :root {
        --fs-h1: 4.5rem;
        --fs-h2: 3.75rem;
        --fs-h3: 1.5rem;
        --fs-h4: 1.25rem;
        --fs-body: 1.125rem;
    }
}

/* GENERAL STYLE */
html {
  scroll-behavior: smooth;
}

body{
  margin: 0;
  background-color: var(--clr-light);
  color: var(--clr-dark);
  font-size: var(--fs-body);
  font-family: var(--ff-primary);
  line-height: 1.6;
}

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


strong { font-weight: var(--fw-bold) }

h1,
h2,
h3 {
    line-height: 1.1;
    margin: 0;
}

h1 { font-size: var(--fs-h1) }
h2 { font-size: var(--fs-h2) }
h3 { font-size: var(--fs-h3) }

/* HEADER */

header {
  display: flex;
  justify-content: space-between;
  padding: 1em;
}

.logo {
  max-width: 150px;
}


/* MENU*/
.nav {
  position: fixed;
  background: var(--clr-dark);
  color: var(--clr-light);
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;  
  transform: translateX(100%);
  transition: transform 250ms ease-in-out; 
}

.nav__list {
  list-style: none;
  display: flex;
  height: 100%;
  flex-direction: column;
  justify-content: space-evenly;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav__link {
  color: inherit;
  font-weight: var(--fw-bold);
  font-size: var(--fs-h2);
  text-decoration: none;
 
}

.nav__link:hover {
  color: var(--clr-accent);
}

/* HAMBURGER BUTTON */
.nav-toggle{
  padding: .5em;
  background: transparent;
  border: 0;
  cursor: pointer;
  position: absolute;
  right: 1em;
  top: 1em;
  z-index: 1000; 
}

.nav-open .nav {
  transform: translateX(0);
}

.nav-open .nav-toggle {
  position: fixed;
}

.nav-open .hamburger {
  transform: rotate(.625turn);
}

.nav-open .hamburger::before {
  transform: rotate(90deg) translateX(-6px);
}

.nav-open .hamburger::after {
  opacity: 0;
}

/* create humburger button */
.hamburger{
  display: block;
  position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after{
  width: 2em;
  height: 3px;
  background-color: var(--clr-accent);
  border-radius: 1em;
  transition: transform 250ms ease-in-out;
}

.hamburger::before,
.hamburger::after{
  content: '';
  position: absolute;
  left: 0;
  right: 0;
}

.hamburger::before {top: 6px}
.hamburger::after {bottom: 6px;}

@media (min-width: 600px){

  .nav-toggle{
    display: none;
  }
  .nav {
    transform: translateX(0);
    position: relative;
    background: transparent;
  }
  .nav__link{
    position: initial;
  }
  .nav__list {
    flex-direction: row;     
    color: var(--clr-dark);    
  }
  .nav__link {
    color: inherit;
    font-weight: var(--fw-bold);
    font-size: var(--fs-body);
    text-decoration: none;
    padding-left: 1em;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
}
/* INTRO SECTION */
section{
  padding: 4em 2em;

}
.section__title {
  margin-bottom: .25em;
}

.section__title--intro {
  font-weight: var(--fw-reg);
}

.section__title--intro strong {
  display: block;
}
.section__title--intro span {
  font-size: var(--fs-h3);
}

.section__title--about{
  color: var(--clr-light);
  text-align: center;
  margin-bottom: 0.5rem;
}

.section__subtitle {
  margin: 0;
  font-size: var(--fs-h3);
}

.section__subtitle--intro,
.section__subtitle--about {
  background: var(--clr-accent);
  font-family: var(--ff-secondary);
  margin-bottom: 1em;
  padding: .25em 1em;
}
.section__subtitle--intro {
  display: inline-block;
}
.intro {
  position: relative;
}

.intro__img {
  box-shadow: var(--bs); 
}


@media (min-width: 600px) {
  .intro {
      display: grid;
      width: min-content;
      margin: 0em auto;
      grid-column-gap: 1em;
      grid-template-areas: 
          "img title"
          "img subtitle";
      grid-template-columns: min-content max-content;
  }
  
  .intro__img {
      grid-area: img;
      min-width: 250px;
      position: relative;
      z-index: 2;
     
  }    
  
  .section__subtitle--intro {
      align-self: start;
      grid-column: -1 / 1;
      grid-row: 2;
      text-align: right;
      position: relative;
      left: -1.5em;
      width: calc(100% + 1.5em);
      padding-right: .25em;
  }
}


/* ABOUT ME SECTION */
.about-me{
  background-color: var(--clr-dark);
  font-family: var(--ff-secondary);
}

.subtitle--about{
  width: 58%;
  text-align: center;
  color: var(--clr-light);
  font-size: var(--fs-body);
  margin: 0 auto 2rem auto;
  font-style: italic;
}
.timeline {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 6px;
  background-color: var(--clr-light);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -3px;
}

.container {
  padding: 10px 40px;
  position: relative;
  background-color: inherit;
  width: 50%;
}

.container::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 25px;
  right: -17px;
  background-color: var(--clr-light);
  border: 4px solid var(--clr-accent);
  top: 15px;
  border-radius: 50%;
  z-index: 1;
}

.left {
  left: 0;
}


.right {
  left: 50%;
}

.left::before {
  content: " ";
  height: 0;
  position: absolute;
  top: 22px;
  width: 0;
  z-index: 1;
  right: 30px;
  border: medium solid var(--clr-light);
  border-width: 10px 0 10px 10px;
  border-color: transparent transparent transparent var(--clr-light);
}

.right::before {
  content: " ";
  height: 0;
  position: absolute;
  top: 22px;
  width: 0;
  z-index: 1;
  left: 30px;
  border: medium solid var(--clr-light);
  border-width: 10px 10px 10px 0;
  border-color: transparent var(--clr-light) transparent transparent;
}

.right::after {
  left: -16px;
}

.content {
  padding: 20px 30px;
  background-color: var(--clr-light);
  position: relative;
  border-radius: var(--br);
}

/* Media queries - Responsive timeline on screens less than 600px wide */
@media screen and (max-width: 600px) {
  .subtitle--about{
    font-size: var(--fs-subtitle);
    width: 100%;
  }
  .timeline::after {
  left: 31px;
  }
  
  .container {
  width: 100%;
  padding-left: 70px;
  padding-right: 25px;
  }
  
  .container::before {
  left: 60px;
  border: medium solid var(--clr-light);
  border-width: 10px 10px 10px 0;
  border-color: transparent var(--clr-light) transparent transparent;
  }

  .left::after, .right::after {
  left: 15px;
  }
  
  .right {
  left: 0%;
  }
}

/* ------------------------------- 
TECHNOLOGIES SECTION
---------------------------------*/
.tech-skills{
  background-color: var(--clr-light);
  font-family: var(--ff-secondary);
}

.section__title__tech{
  color: var(--clr-dark);
  text-align: center;
  padding-bottom: 2rem;
}

.tech-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1200px;
  width: 100%;
  justify-content: center;
  margin: 0 auto;
}

.columns-title {
  list-style-type: none;
  border: 1px solid var(--clr-dark);
  margin: 0;
  padding: 0;
  -webkit-transition: 0.3s;
  transition: 0.3s;
  border-radius: var(--br);
}

.columns-title:hover {
  box-shadow: 0 8px 12px 0 rgba(1, 105, 65, 0.3)
}

.columns-title li {
  border-bottom: 1px solid var(--clr-dark);
  padding: 1rem;
  text-align: center;
  color: var(--clr-dark);
}

.columns-title .dark {
  background-color: var(--clr-dark);
  font-size: 20px;
  color: var(--clr-light);
}
@media only screen and (max-width: 900px) {
  .tech-grid{
    grid-template-columns: repeat(2,1fr);
  }
}
@media only screen and (max-width: 600px) {
  .tech-grid{
    grid-template-columns: 1fr;
  }
}
/* ------------------------------- 
WORK SECTION
---------------------------------*/
.work{
  text-align: center;
  background-color: var(--clr-dark);
}

.section__title--work{  
  color: var(--clr-light);
  margin-bottom: 1em;
}

#myBtnContainer{
  margin-bottom: 2em;
}

.btn{
  padding: .75em 1em;
  text-transform: none;
  font-size: 1rem;
  background-color: var(--clr-light); 
  color: var(--clr-dark);
  border: 0;
  cursor: pointer;
  margin-bottom: .5em;
  border-radius: var(--br);
}

.btn-see-all{
  margin-top: 2em;
}

.btn:hover,
.btn:focus{
  text-decoration: underline;
}

.active{
  background-color: var(--clr-accent);
  color: var(--clr-dark);
  font-weight: var(--fw-bold);
  text-decoration: none;
}

/* PROJECT GRID*/
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 2em;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  margin-bottom: 1rem;
}

.projects-grid a{
  color: var(--clr-dark);
  text-decoration: none;
}

@media (max-width: 600px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

.project {
  background: var(--clr-light);
  box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  border-radius: var(--br);
  -webkit-transition: 0.3s;
  transition: 0.3s;
}
.project:hover{
  box-shadow: 2px 4px 8px 0 rgba(250, 252, 251, 0.5);
}

.code {
  color: var(--clr-dark);
  transition: color 0.3s ease-out;
}

.project:hover .code {
  color: var(--clr-accent);

}

.project-image {
  padding: 1rem 1rem 0.5rem 1rem;
  width: 100%;
  object-fit: cover;
  margin-bottom: .5em;
  /* opacity: .75; */
  /* border-bottom: 1px solid var(--clr-dark-fade); */
}


.project-title {
  margin: 0;
  font-size: var(--fs-body);
  font-weight: var(--fw-bold);
  margin-bottom: 0;
}
.project-techs{
  color: var( --clr-light-dark);
  font-size: var(--fs-subtitle);
  padding: 0 .5rem;
  margin-top: 0;

}
.project-des{
  color: var(--clr-dark);
  font-size: var(--fs-subtitle);
  padding: 0 .5rem;
}
.project-des-dark{
  width: 60%;
  margin: 0 auto 2rem auto;
}

/* FOOTER */

.footer {
  background-color: var(--clr-light);
  color: var(--clr-dark);
  text-align: center;
  padding: 2.5em 0;
  font-size: var(--fs-h3);

}

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

.footer p{
  margin-bottom: 4em;
  color: var(--clr-dark);
}

.footer__link {
  font-weight: var(--fw-bold);
}

.footer__link:hover,
.social-list__link:hover {
  opacity: .7;
}

.footer__link:hover {
  text-decoration: underline;
}

.social-list {
  list-style: none;
  display: flex;
  justify-content: center;
  margin: 2em 0 0;
  padding: 0;
}

.social-list__item {
  margin: 0 .5em;
}

.social-list__link {
  padding: .5em;
}