/* Animations */

/* Fonts */
@font-face {
    font-family: "Poppins-Black";
    src: url(Fonts/Poppins-Black.ttf) format("truetype");
    font-weight: bolder;
}
@font-face {
    font-family: "Poppins";
    src: url(Fonts/Poppins-Regular.ttf) format("truetype");
    font-weight: normal;
}

* {
    margin: 0;

    /* Font sizes */
    --fs_h1: 4rem;
    --fs_h2: 3rem;
    --fs_h3: 2rem;
    --fs_h4: 1.3rem;
    --fs_h5: 1rem;
    --fs_p: 1rem;

    /* Colour */
    --main_col: white;
    --main_light: rgb(232, 232, 232);
    --main_light_2: rgb(216, 216, 216);
    --main_light_3: rgb(200, 200, 200);
    --main_light_4: rgb(136, 136, 136);
    --main_dark: rgb(34, 34, 34);
    --main_dark_2: rgb(67, 67, 67);
    --col_red: rgb(254, 63, 63);
    --col_red_light: rgb(255, 94, 94);
}

body {
    background-color: var(--main_dark);
    font-family: "Poppins";
}

h1 {
    color: var(--main_col);
    font-size: var(--fs_h1);
}

h1 span {
    color: var(--main_col);
    font-size: var(--fs_h1);
    font-family: "Poppins-Black";
}

h2 {
    color: var(--main_col);
    font-size: var(--fs_h2);
}

h2 span {
    color: var(--main_col);
    font-size: var(--fs_h2);
    font-family: "Poppins-Black";
}

h3 {
    color: var(--main_col);
    font-size: var(--fs_h3);
}

h3 span {
    color: var(--main_col);
    font-size: var(--fs_h3);
    font-family: "Poppins-Black";
}

h4 {
    color: var(--main_col);
    font-size: var(--fs_h4);
}

h4 span {
    color: var(--main_col);
    font-size: var(--fs_h4);
    font-family: "Poppins-Black";
}

h5 {
    color: var(--main_col);
    font-size: var(--fs_h5);
}

h5 span {
    color: var(--main_col);
    font-size: var(--fs_h5);
    font-family: "Poppins-Black";
}

a {
    cursor: pointer;
    text-decoration: none;
    font-size: var(--fs_p);
}

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

p {
    color: var(--main_col);
    font-size: var(--fs_p);
}

.template {
    visibility: hidden;
}

/* Projects Page Common */

/* Nav links */
.top-nav {
    position: fixed;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 6rem;
    background-color: transparent;
    z-index: 10;
    transition: all 0.5s;
}
.top-nav-transparent {
    transition: all 0.5s;
    opacity: 0;
}
.top-nav .home-button {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 1rem;
}
.top-nav .home-button p {
    color: var(--main_col);
}
.top-nav .home-button img {
    width: 2rem;
    height: 2rem;
}
.top-nav .nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}
.top-nav .nav-links li p {
    color: var(--main_col);
    cursor: pointer;
    transition: all 0.2s;
}
.top-nav .nav-links li p:hover {
    transition: all 0.2s;
    color: var(--col_red_light);
}
.top-nav .nav-links .this-page {
    color: var(--col_red_light);
}

/* Sub body */
.sub-body {
    background-color: var(--main_light);
    display: grid;
    grid-template-columns: repeat(1, 1fr);
}
.title-container {
    height: 45rem;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}
@keyframes titleFadeAnim {
    from {
        opacity: 0;
        padding-top: 8.5rem;
    }
    to {
        opacity: 1;
        padding-top: 10rem;
    }
}
@keyframes titleDescFadeAnim {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
.title {
    text-align: center;
    padding-top: 10rem;
    animation: titleFadeAnim 0.5s ease-out forwards;
}
.title-desc {
    text-align: center;
    padding: 3rem 20rem;
    padding-bottom: 6rem;
    height: 6rem;
    color: var(--main_light);
    opacity: 0;

    animation: titleDescFadeAnim 0.75s ease-out forwards;
    animation-delay: 0.5s;
}

/* Back to top btn */
.back-to-top {
    background-color: var(--main_dark);
    cursor: pointer;
    position: fixed;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    right: 2rem;
    bottom: 2rem;
    transition: all 0.5s;
}
.back-to-top-transparent {
    transition: all 0.5s;
    opacity: 0;
}
/* Content button */
.content-btn {
    display: flex;
    background-color: black;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin: 4rem auto;
    max-width: 12.5rem;
    padding: 0.5rem;

    transition: all 0.2s;
}
.content-btn p {
    color: white !important;
}

/* Main */
.main-page {
    background-image: url(Images/main_background.jpg);
    background-repeat:no-repeat;
    background-size:cover;
}

/* Title */
.main-page .main-title {
    margin: auto;
    text-align: center;
    margin-top: 10rem;
    width: 50rem;
}
.main-page .main-title span {
    color: var(--col_red_light);
}
/* Resume Button */
.main-page .resume-btn {
    background-color: var(--col_red_light);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin: 4rem auto;
    padding: 0.25rem;
    border-radius: 15px;
    width: 9rem;
    gap: 0.25rem;

    transition: all 0.2s;
}
/* Links to other stuff */
.main-page .btn-lists {
    /* padding-top: 1rem; */
    padding-top: 7rem;
    max-width: 40rem;
    max-height: 10rem;
    margin: auto;
    align-items: center;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}
.main-page .list-btn {
    cursor: pointer;
    transition: all 0.2s;
    opacity: 50%;
    margin: auto;
}
.main-page .list-btn img {
    object-fit: contain;
    max-width: 30%;
    margin: auto;
}
.main-page .list-btn p {
    text-align: center;
}
.main-page .list-btn:hover {
    opacity: 100%;
}
/* Social Links */
.main-page .social-links {
    margin: auto;
    margin-top: 5rem;
    align-items: center;
    justify-content: center;
    display: flex;
    gap: 1rem;
}
.main-page .social-links img {
    opacity: 50%;
    object-fit: contain;
    max-width: 1.5rem;
    margin: auto;
    cursor: pointer;
    transition: all 0.2s;
}
.main-page .social-links img:hover {
    opacity: 100%;
}

/* About Me */
.about-me-page .title-container {
    background-image: linear-gradient(to top, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 1)), url(Images/about_me_background.jpg);
}
.about-me-page .sub-body p {
    color: black;
}
.about-me-page .sub-body h3 {
    color: black;
}
.about-me-page .default-header {
    padding: 3rem 20rem;
    text-align: center;
}
.about-me-page .default-header h3 span {
    color: var(--main_col);
}
.about-me-page .default-header h2 span {
    color: var(--main_col);
}
.about-me-page .default-header p {
    padding-top: 2rem;
    text-align: center;
}

/* Profile */
.about-me-profile {
    background-color: black;
    padding: 7rem;
    padding-left: 12rem;
    padding-right: 12rem;
}
.about-me-profile-title {
    text-align: center;
    padding: 1rem;

    opacity: 0;
    transform: translateY(2.5rem);
}
.about-me-profile-loaded .about-me-profile-title {
    transition: all 0.75s;
    transform: translateY(0);
    opacity: 1;
}
.about-me-profile .profile-section {
    padding: 2rem;
    display: inline-flex;
    opacity: 0;
}
.about-me-profile-loaded .profile-section {
    transition: all 0.75s;
    transition-delay: 0.5s;
    opacity: 1;
}
.about-me-profile .profile-picture-frame img {
    width: 30rem;
    border: 2px var(--main_light_4) solid;
}
.about-me-profile .profile-info {
    padding-top: 5rem;
    padding-right: 7rem;
}
.about-me-profile .profile-info p {
    color: var(--main_light);
}
.about-me-profile .profile-info p span {
    font-size: 1.4rem;
    color: var(--col_red);
}

/* Education */
.about-me-education {
    background-color: black;
}
.about-me-education-title {
    text-align: center;
    padding: 1rem;
    opacity: 0;
    transform: translateY(2.5rem);
}
.about-me-education-loaded .about-me-education-title {
    transition: all 0.75s;
    transform: translateY(0);
    opacity: 1;
}
.about-me-education-desc p {
    padding: 2rem;
}
.about-me-education .school-section {
    height: 85vh;
    opacity: 0;
}
.about-me-education-loaded .school-section {
    transition: all 0.75s;
    transition-delay: 0.5s;
    opacity: 1;
}
.about-me-education .school-section .school-desc {
    padding-top: 32rem;
    text-align: center;
}
.about-me-education .school-section .school-desc h4 span {
    color: var(--col_red);
}
.about-me-education .school-section .school-desc .course {
    padding-top: 1rem;
}
.about-me-education .school-section .school-display {
    height: 100%;
    width: 100%;
    background-position: top center;
    background-size: contain;
}
/* School CSS */
.about-me-education .school-section .nyp {
    background-image:
    linear-gradient(to top, rgba(0, 0, 0, 1), rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0), rgba(0, 0, 0, 0),rgba(0, 0, 0, 0), rgba(0, 0, 0, 0), rgba(0, 0, 0, 1)),
    linear-gradient(to right, rgba(0, 0, 0, 1), rgba(0, 0, 0, 1), rgba(0, 0, 0, 0), rgba(0, 0, 0, 0),rgba(0, 0, 0, 0), rgba(0, 0, 0, 1), rgba(0, 0, 0, 1)),
    url(Images/nyp.jpg);

    background-repeat: no-repeat;
}

/* Programming experience */
.about-me-programming {
    background-color: var(--main_light_2);
    padding: 2rem 0;
    padding-bottom: 0;
}
.about-me-programming .about-me-programming-title {
    text-align: center;
    opacity: 0;
}
.about-me-programming-loaded .about-me-programming-title {
    transition: all 0.75s;
    opacity: 1;
}
/* Languages Chart */
.about-me-programming .languages {
    margin: auto;
    padding: 2rem 0;
    width: 50%;
}
.about-me-programming .languages-chart {
    border: 0.25rem var(--main_light_4) solid;
    margin: auto;
    width: 65%;
    padding: 2rem;
    background-color: var(--main_light);
}
.about-me-programming .languages-chart .language-container {
    margin: 0.25rem 0;
    height: 2rem;
    width: 100%;
    display: inline-flex;
    gap: 1rem;
    
    opacity: 0;
}
.about-me-programming .languages-chart .language-container-loaded {
    transition: all 0.75s;
    opacity: 1;
}
.about-me-programming .languages-chart .language-container .label {
    transform: translateX(-1rem);
    text-align: right;
    width: 20%;
    overflow: hidden;
}
.about-me-programming .languages-chart .language-container-loaded .label {
    transition: all 0.75s;
    transform: translateX(0);
}
.about-me-programming .languages-chart .language-container .meter {
    background-color: var(--main_light_4);
    margin: auto;
    width: 70%;
    height: 50%;
    border-radius: 15px;
}
.about-me-programming .languages-chart .language-container .meter .actual {
    background-color: var(--col_red_light);
    height: 100%;
    border-radius: 15px;
    transform-origin: 0;
    transform: scaleX(0);
}
.about-me-programming .languages-chart .language-container-loaded .meter .actual {
    transform: scaleX(1);
    transition: all 0.75s;
}
/* Experience with game engines */
.about-me-game-engines {
    width: 100%;
    background-color: var(--main_light_2);
    padding-bottom: 10rem;
}
.about-me-game-engines .default-header {
    opacity: 0;
}
.about-me-game-engines-loaded .default-header {
    transition: all 0.75s;
    opacity: 1;
}
.about-me-game-engines .game-engines-container {
    margin: auto;
    width: 60rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}
.about-me-game-engines .game-engines-container .game-engine-display {
    width: 7.5rem;
    height: 7.5rem;
    margin: auto;
    opacity: 0;
    transform: translateY(-1rem);
}
.about-me-game-engines .game-engines-container .game-engine-display-loaded {
    transition: all 0.75s;
    transition-delay: 0.5s;
    opacity: 1;
    transform: translateY(0);
}
.about-me-game-engines .game-engines-container .game-engine-display img {
    width: 100%;
    height: 100%;
}
.about-me-game-engines .game-engines-container .game-engine-display p {
    padding-top: 1rem;
    text-align: center;
}
/* Hobbies */
.about-me-hobbies {
    background-color: var(--col_red_light);
    padding: 4rem 0;
    padding-bottom: 8rem;
}
.about-me-hobbies .header h2 {
    text-align: center;
    padding: 2rem;
    opacity: 0;
    transform: translateY(-2rem);
}
.about-me-hobbies-loaded .header h2 {
    transition: all 0.75s;
    opacity: 1;
    transform: translateY(0);
}
.about-me-hobbies .hobbies-display {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    width: 75rem;
    min-height: 20rem;
    margin: auto;
}
.about-me-hobbies .hobbies-container {
    background-color: var(--main_light);
    display: inline-flex;
    height: 8rem;
    padding: 1rem 2rem;
    border-radius: 15px;
    opacity: 0;
    transform: translateY(1rem);
}
.about-me-hobbies .hobbies-container-loaded {
    transition: all 0.75s;
    opacity: 1;
    transform: translateY(0);
}
.about-me-hobbies .hobbies-container img {
    margin: auto;
    width: 7rem;
}
.about-me-hobbies .hobbies-container .hobby-desc {
    margin-left: 2rem;
}

/* Projects Page */
.projects-page-sub-body {
    padding: 6rem;

    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}
.projects-page .title-container {
    background-image: linear-gradient(to top, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 1)), url(Images/projects_background.jpg);
}
.personal-projects-page .title-container {
    background-image: linear-gradient(to top, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 1)), url(Images/personal_projects_background.jpg);
}
.school-projects-page .title-container {
    background-image: linear-gradient(to top, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 1)), url(Images/school_projects_background.jpg);
}

/* Project mini display */
.project-mini-display {
    background-color: var(--main_light_3);
    border-radius: 2%;
    overflow: hidden;
    transition: transform 0.2s ease; /* smooth animation */
    cursor: pointer;
}
.project-mini-display:hover {
    transform: scale(0.975);
}
.project-mini-display h3 {
    font-size: 1.5rem;
    padding-top: 1rem;
    padding-left: 1rem;
    padding-right: 1rem;
    color: black;
}
.project-mini-display .cover-description {
    padding-left: 1rem;
    padding-right: 1rem;
}
.project-mini-display p {
    color: black;
}
.project-mini-display .tags {
    padding: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.project-mini-display .tags p {
    font-size: 0.7rem;
    padding-top: 0.2rem;
    padding-bottom: 0.2rem;
    padding-left: 0.8rem;
    padding-right: 0.8rem;
    text-align: center;
    color: white;
    background-color: var(--col_red_light);
    border-radius: 10%;
}

/* Project Containers */
.project-container {
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    position: fixed;
    background: rgba(0, 0, 0, 0.7);

    opacity: 0;
    visibility: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}
.project-container-active {
    transition: all 0.2s;
    opacity: 1;
    visibility: visible;
}
.project-container .container {
    width: 80%;
    padding: 3rem;
    background-color: var(--main_light_3);
}
.project-container .display {
    gap: 2rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
}
.project-container h3 {
    color: black;
    padding-bottom: 1.5rem;
}
.project-container h4 {
    color: black;
    padding-bottom: 1.5rem;
}
.project-container p {
    color: black;
}
.project-container p span {
    color: var(--col_red);
}
.project-container a {
    color: var(--col_red);
    text-decoration: underline;
}
/* Project description */
.project-container .project-desc {
    overflow-y: hidden;
    margin-bottom: 2rem;
}
/* Project video */
.project-container .project-video {
    position: relative;
    padding-top: 56.25%; /* 16 : 9 */
    margin-bottom: 1rem;
}
.project-container .project-video video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
/* Learning points  */
.project-container .project-learning-points {
    margin-top: 2rem;
}
.project-container .project-learning-points .list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
}
/* Game imgaes */
.project-container .project-images {
    position: relative;
}
.project-container .viewport {
    overflow: hidden;
}
.project-container .project-images img {
    max-width: 27.5%;
    transition: transform 0.2s ease;
    cursor: pointer;
}
.project-container .project-images img:hover {
    transform: scale(0.95);
}
.project-container .linear-track {
    display: flex;
    gap: 10px;
    transition: transform 0.3s ease;
}
/* Buttons */
.project-container .linear-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    background: rgba(67, 67, 67, 0.8);
    color: white;
    border: none;
    cursor: pointer;
    width: 1.75rem;
    height: 2.5rem;
    text-align: center;
}
.project-container .linear-btn-left {
    left: 0.3rem;
}
.project-container .linear-btn-right {
    right: 0.3rem;
}
/* Game links */
.project-container .project-links {
    position: absolute;
    text-align: center;
    
    left: 50%;
    transform: translate(-50%, 35%);
}
/* Project images lightbox */
.project-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

    background: rgba(0, 0, 0, 0.8);

    opacity: 0;
    display: flex;
    visibility: hidden;
    justify-content: center;
    align-items: center;
}
.project-lightbox-active {
    transition: all 0.2s;
    opacity: 1;
    visibility: visible;
}
.project-lightbox img {
    max-width: 70%;
    max-height: 70%;
}

/* Awards */
.awards-page .title-container {
    background-image: linear-gradient(to top, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 1)), url(Images/awards_background.jpg);
}
.awards-page .awards-page-sub-body {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    padding-top: 0;
    gap: 3rem;
    padding: 6rem;
}
.awards-page .award-container {
    padding: 3rem;
    background-color: var(--main_light_2);
    text-align: center;
}
.awards-page .award-container h3 {
    padding-top: 1rem;
    color: var(--main_dark);
}
.awards-page .award-container h5 {
    padding-bottom: 1rem;
    color: var(--main_dark);
}
.awards-page .award-container p {
    color: var(--main_dark);
}
.awards-page .award-container img {
    height: 23rem;
    object-fit: contain;
}