@import url("https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap");
@media (max-width: 768px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
}

.projects-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.card {
  width: 100%;
  max-width: 650px;       /* Slightly larger card */
  margin: 20px auto;
  border-radius: 10px;
  overflow: hidden;
  background-color: white;
  position: relative;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.card img {
  width: 100%;
  height: auto;
  max-height: 500px;       /* Allows large image without overflowing */
  object-fit: contain;
  display: block;
}




.card h3 {
  margin: 0.5rem 0;
  font-size: 1.2rem;
  text-align: center;
  color: #333;
}

.card .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  text-align: center;
  transition: opacity 0.3s ease;
}

.card:hover .overlay {
  opacity: 1;
}

.card:hover {
  transform: translateY(-5px);
}




:root {
  font-family: "Roboto", sans-serif;
}

.link-btn {
  /* 
  Increase anchor clickable area 
  ref: https://stackoverflow.com/questions/11078509/how-to-increase-the-clickable-area-of-a-a-tag-button 
  */
  display: inline-block;
  position: relative;
  z-index: 1;
}

.container {
  min-height: fit-content;
  padding-top: 96px;
  padding-bottom: 96px;
}

main {
  background: var(--dark-bg-color);
}

section {
  /* make navbar not intercept the content when scroll navigation */
  scroll-margin-top: var(--header-height);
}

/* Heading each section */
.container h2 {
  text-align: center;
  color: white;
  margin-bottom: 2rem;
  font-size: 2.5rem;
  font-weight: 500;
}

/* Navbar start */
header {
  position: fixed;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: var(--header-padding);
  background-color: var(--primary-black-color);
}

header .logo img {
  height: var(--header-highest-element);
  aspect-ratio: 1 / 1;
  user-select: none;
}

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

nav li {
  display: inline;
}

#navbar {
  margin: auto 1rem;
  color: white;
  width: max-content;
  font-weight: 500;
}

#hamburger {
  display: none;
  /* reset button style */
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 0;
}

#hamburger::before,
#hamburger .patty,
#hamburger::after {
  display: block;
  background-color: white;
  width: 30px;
  height: 4px;
  border-radius: 2px;
}

#hamburger::before {
  content: "";
  position: absolute;
  top: 0;
}

#hamburger::after {
  content: "";
  position: absolute;
  bottom: 0;
}

#navbar.menu-active {
  /* just use the number that can contain all navbar content (lil bit overflow is acceptable) */
  /* actual number is total_link*(link_height + link_border) = 7*(40 + 0.5) = 283.5px */
  max-height: 284px;
}

#navbar ul {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

#navbar li a {
  padding: 2px 6px;
}

#navbar li:hover {
  border-radius: 4px;
  color: black;
  background-color: white;
}
/* Navbar end */

/* Hero start */
#home {
  height: 100vh;
  position: relative;
  margin-top: var(--header-height);
}

#particles-js {
  height: 100%;
  background: linear-gradient(
    0deg,
    var(--night-blue-color),
    var(--primary-black-color)
  );
}

#home .content {
  position: absolute;
  /* make it vertically center */
  top: calc(50vh);
  transform: translateY(-50%);
  /* */
  left: 0;
  right: 0;
  margin: auto;
  width: 100%;
  z-index: 1;
  color: white;
  text-align: center;
}

#home .content h1 {
  font-size: 3rem;
}

#home .content p {
  font-size: 2rem;
}

#home .content span {
  color: var(--primary-red-color);
}

#home .social {
  word-spacing: 10px;
  margin-top: 16px;
  color: black;
}

#home .social li {
  display: inline-block;
  aspect-ratio: 1 / 1;
}

#home .social li a {
  border-radius: 50%;
  background-color: white;
  height: 100%;
}

#home .social li a:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

#home .social li a:hover i {
  color: white;
}

#home .social li .github {
  padding: 8px;
}

#home .social li .linkedin {
  padding: 9px;
}

#home .social .fa-github {
  font-size: 24px;
}

#home .social .fa-linkedin-in {
  font-size: 24.28px;
}
/* Hero end */

/* About start */
#about h2 span {
  color: var(--primary-red-color);
}

#about .content {
  display: flex;
  gap: 32px;
  color: white;
  justify-content: center;
}

#about .content img {
  height: 300px;
  border-radius: 2.5rem;
}

#about .content p {
  font-weight: 300;
  font-size: 1.15rem;
  max-width: 400px;
  text-wrap: pretty;
}

/* About end */

/* Experience start */
#experience .timeline {
  margin: 0 auto;
  width: max-content; /* make element not cover the entire page */
}

#experience .checkpoint {
  position: relative;
  padding-bottom: var(--experience-box-gap);
}

#experience .checkpoint:nth-child(odd) {
  border-right: var(--experience-line-width) solid var(--primary-red-color);
  padding-right: 1.5rem;
  transform: translateX(calc(-50% + var(--experience-line-width) / 2));
}

#experience .checkpoint:nth-child(even) {
  border-left: var(--experience-line-width) solid var(--primary-red-color);
  padding-left: 1.5rem;
  transform: translateX(calc(50% - var(--experience-line-width) / 2));
}

#experience .checkpoint::before {
  content: "";
  background-color: var(--primary-red-color);
  width: var(--experience-checkpoint-size);
  height: var(--experience-checkpoint-size);
  border-radius: 50%;
  position: absolute;
  top: 0;
}

/* 
translateX: make center of this element align to timeline border 
translateY: make center of this element align to the top of the checkpoint border
*/
#experience .checkpoint:nth-child(odd)::before {
  right: 0;
  transform: translate(var(--experience-checkpoint-x-translation), -50%);
}

#experience .checkpoint:nth-child(even)::before {
  left: 0;
  transform: translate(
    calc(-1 * var(--experience-checkpoint-x-translation)),
    -50%
  );
}

#experience .checkpoint div {
  padding: 8px 16px;
  background-color: white;
}

#experience .checkpoint div h3 {
  font-weight: 500;
  font-size: 1.35rem;
}

#experience .checkpoint div h4 {
  color: var(--primary-red-color);
  font-weight: 400;
  font-size: 1.2rem;
}

#experience .checkpoint div p {
  font-weight: 300;
  font-style: italic;
}

#experience .checkpoint:nth-child(odd) div {
  border-radius: 6px 0 6px 6px;
}

#experience .checkpoint:nth-child(even) div {
  border-radius: 0 6px 6px;
}
/* Experience end */

/* Project start */
#project .content {
  color: white;
}

#project .card {
  display: block;
  position: relative;
  width: 640px;
  aspect-ratio: 16/9;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 15px 0;
}

#project .card h3 {
  position: absolute;
  bottom: 0;
  left: 0;
  width: fit-content;
  background-color: var(--primary-red-color);
  padding: 2px 16px;
  border-radius: 0 4px 0 0;
  font-size: 1.5rem;
  font-weight: 500;
}

/* we use backgroud-image instead of <img> element to support responsive image source changes */
#project .card .image {
  min-width: 100%;
  min-height: 100%;
  background-image: url("/assets/tastdy-landscape.png");
  background-size: cover;
}

#project .overlay {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.75);
  transform: translateX(100%);
}

#project .overlay div {
  position: relative;
  height: 100%;
}

#project .overlay p {
  padding: 20px;
}

#project .overlay i {
  position: absolute;
  bottom: 0.5rem;
  right: 1rem;
  font-size: 1.5rem;
}
/* Project end */

/* Education start */
#education .content {
  color: white;
}

#education .content p {
  margin: 0 auto;
  text-align: center;
  font-size: 1.75rem;
  font-weight: 300;
  max-width: 40ch;
}

#education .content .major {
  color: var(--primary-red-color);
}

#education .content .year-taken {
  font-size: 1.25rem;
  font-weight: 200;
  font-style: italic;
}

/* Education end */

/* Skills start */
#skills {
  padding-left: 10%;
  padding-right: 10%;
}

#skills .content {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  grid-template-rows: repeat(4, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 20px;
}

#skills .skill {
  border-radius: 8px;
  color: whitesmoke;
  background-color: rgba(255, 255, 255, 0.2);
  padding: 20px 0 2.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

#skills .skill figcaption {
  font-weight: 500;
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
}

/* skills end */

/* Footer start */
#footer {
  display: grid;
  justify-content: space-around;
  row-gap: 24px;
  padding: 20px 0;
  color: white;
  background-color: var(--primary-black-color);
}

#footer .content {
  grid-row: 1 / 1;
}

#footer .content h2 {
  font-size: 1.2rem;
  font-weight: 600;
}

#footer .content p {
  font-size: 1rem;
}

#footer .social {
  grid-row: 2 / 3;
  word-spacing: 0.5rem;
  /* height: 24px; */
}

#footer .social li {
  display: inline-block;
}

#footer .social li a {
  display: flex;
  align-items: center;
}

#footer .social li a:hover {
  opacity: 70%;
}

#footer .social li i {
  font-size: 1.5rem;
}

#footer .contact {
  grid-row: 1 / 3;
}

#footer .contact h3 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

#footer .contact ul {
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

#footer .contact li i {
  margin-right: 0.25rem;
}
/* Footer end */