/* mobile first responsive */
:root {
    --nav-color: #215B63;
    --background-color: #67C090;
    --section-background-color: #124170;
    --background-img: url("https://images.unsplash.com/photo-1578926375605-eaf7559b1458?q=80&w=1526&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D4");
}

body {
    background-image: var(--background-img);
    background-size: cover;
    background-position: center;
    backdrop-filter: blur(4px);
}

* {
    box-sizing: border-box;
    font-family: "Google Sans", sans-serif;
    font-size: 16px;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
    color: #000;
}

nav {
    max-width: 100%;
    height: auto;
    background-color: var(--nav-color);
    position: relative;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

nav a {
    text-emphasis: none;
    color: #fff;
}

nav figure {
    margin: 0;
    display: none;
}

nav #github-logo:hover {
    color: #000;
    transition: 0.3s ease-in-out;
    -webkit-transition: 0.3s ease-in-out;
    -moz-transition: 0.3s ease-in-out;
    -ms-transition: 0.3s ease-in-out;
    -o-transition: 0.3s ease-in-out;
}

nav #facebook-logo:hover {
    color: #0096FF;
    transition: 0.3s ease-in-out;
    -webkit-transition: 0.3s ease-in-out;
    -moz-transition: 0.3s ease-in-out;
    -ms-transition: 0.3s ease-in-out;
    -o-transition: 0.3s ease-in-out;
}

nav .logo {
    color: #fff;
    font-size: 3rem;
    font-weight: 600;
    text-align: center;
    user-select: none;
}

main {
    position: relative;
    max-width: 80vw;
    min-height: 100vh;
    margin: 1rem auto 2rem;
    padding: 0;
    color: #fff;
    display: grid;
    grid-template-areas:
        'introduction'
        'personal'
        'education'
        'experience'
        'projects'
        'tech'
        'volunteer'
    ;
    gap: 1rem;
}

#introduction {
    grid-area: introduction;
    width: 100%;
    height: fit-content;
    padding: 1rem;

}

#introduction h1 {
    text-align: center;
    width: fit-content;
    padding: .5rem;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: .5rem;
    background-color: #000;
    color: #fff;
    opacity: .6;
    border-radius: .5rem;
    -webkit-border-radius: .5rem;
    -moz-border-radius: .5rem;
    -ms-border-radius: .5rem;
    -o-border-radius: .5rem;
}

#introduction a {
    color: #fff;
    font-weight: 600;
    background-color: var(--section-background-color);
    padding: .2rem;
    border-radius: .2rem;
    -webkit-border-radius: .2rem;
    -moz-border-radius: .2rem;
    -ms-border-radius: .2rem;
    -o-border-radius: .2rem;
}

/* personal */
#personal {
    grid-area: personal;
    max-width: 100%;
    height: fit-content;
    background-color: var(--section-background-color);
    padding: 1rem;
    border-radius: .5rem;
    -webkit-border-radius: .5rem;
    -moz-border-radius: .5rem;
    -ms-border-radius: .5rem;
    -o-border-radius: .5rem;
}

#personal h2 {
    grid-name: personal;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

#personal-info {
    line-height: 1.5;
    background-color: #fff;
    color: #000;
    border-radius: .5rem;
    -webkit-border-radius: .5rem;
    -moz-border-radius: .5rem;
    -ms-border-radius: .5rem;
    -o-border-radius: .5rem;
    padding: .5rem;
    margin-bottom: .5rem;
}

#personal-contact a:hover {
    color: #0096FF;
    transition: 0.3s ease-in-out;
    -webkit-transition: 0.3s ease-in-out;
    -moz-transition: 0.3s ease-in-out;
    -ms-transition: 0.3s ease-in-out;
    -o-transition: 0.3s ease-in-out;
}

#personal-interesting h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

#personal-interesting ul li {
    padding: .5rem;
    display: flex;
    align-items: center;
}

#personal-interesting ul li span {
    margin-left: .8rem;
    font-size: 1.2rem;
}

#personal-interesting ul li img {
    background-color: #fff;
    padding: .3rem;
    border-radius: .2rem;
    width: 48px;
    height: 48px;
    -webkit-border-radius: .2rem;
    -moz-border-radius: .2rem;
    -ms-border-radius: .2rem;
    -o-border-radius: .2rem;
}

/* education */
#education {
    grid-area: education;
    width: 100%;
    height: fit-content;
    background-color: var(--section-background-color);
    padding: 1rem;
    border-radius: .5rem;
    -webkit-border-radius: .5rem;
    -moz-border-radius: .5rem;
    -ms-border-radius: .5rem;
    -o-border-radius: .5rem;
}

#education h2 {
    grid-name: education;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.school {
    margin-bottom: 1rem;
}

/* experience */
.experience {
    max-width: 100%;
    height: fit-content;
    margin: 0 auto;
    grid-area: experience;
}

.experience h2 {
    margin-bottom: 1rem;
    text-align: center;
    color: #000;
    font-size: 1.5rem;
    font-weight: 800;
    background-color: #fff;
    padding: .5rem;
    border-radius: .5rem;
    -webkit-border-radius: .5rem;
    -moz-border-radius: .5rem;
    -ms-border-radius: .5rem;
    -o-border-radius: .5rem;
}

.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 0;
    width: 3px;
    height: 100%;
    background: #334155;
}

.item {
    position: relative;
    margin-bottom: 24px;
    padding: 16px 18px;
    background: #1e293b;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.item::before {
    content: "";
    position: absolute;
    left: -22px;
    top: 20px;
    width: 12px;
    height: 12px;
    background: cyan;
    border-radius: 50%;
}

.date {
    font-size: 0.9rem;
    color: #38bdf8;
    margin-bottom: 6px;
    font-weight: bold;
}

.role {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.company {
    color: #94a3b8;
    margin-bottom: 8px;
}

.desc {
    line-height: 1.6;
    color: #cbd5e1;
}

/* projects */
.projects {
    grid-area: projects;
    width: 100%;
    height: fit-content;
    margin: auto;
}

.projects h2 {
    margin-bottom: 1rem;
    text-align: center;
    color: #000;
    font-size: 1.5rem;
    font-weight: 800;
    background-color: #fff;
    padding: .5rem;
    border-radius: .5rem;
    -webkit-border-radius: .5rem;
    -moz-border-radius: .5rem;
    -ms-border-radius: .5rem;
    -o-border-radius: .5rem;
}

.project-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.2rem;
    overflow-y: hidden;
}

.project-card {
    background: #1e293b;
    border-radius: 1rem;
    overflow: hidden;
    opacity: 0;
    transform: translateY(2rem);
    transition: transform 0.5s ease, opacity 0.5s ease;
    -webkit-transform: translateY(2rem);
    -moz-transform: translateY(2rem);
    -ms-transform: translateY(2rem);
    -o-transform: translateY(2rem);
    -webkit-border-radius: 1rem;
    -moz-border-radius: 1rem;
    -ms-border-radius: 1rem;
    -o-border-radius: 1rem;
    -webkit-transition: transform 0.5s ease, opacity 0.5s ease;
    -moz-transition: transform 0.5s ease, opacity 0.5s ease;
    -ms-transition: transform 0.5s ease, opacity 0.5s ease;
    -o-transition: transform 0.5s ease, opacity 0.5s ease;
}

.project-card.show {
    opacity: 1;
    transform: translateY(0);
}

.project-thumb {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    background: #334155;
}

.project-body {
    padding: 18px;
}

.project-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.project-desc {
    color: #cbd5e1;
    line-height: 1.6;
    font-size: 0.95rem;
    margin-bottom: 14px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.project-tech span {
    font-size: 0.8rem;
    padding: 6px 10px;
    background: #334155;
    border-radius: 999px;
    color: #93c5fd;
}

.project-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.project-links a {
    text-decoration: none;
    color: white;
    background: #2563eb;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 0.9rem;
    transition: 0.2s ease;
}

.project-links a:hover {
    transform: translateY(-2px);
}

.project-links a.secondary {
    background: #334155;
}

/* tech */
.tech {
    grid-area: tech;
    max-width: 900px;
    margin: 60px auto;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 1rem;
    border-radius: .8rem;
    -webkit-border-radius: .8rem;
    -moz-border-radius: .8rem;
    -ms-border-radius: .8rem;
    -o-border-radius: .8rem;
}

.tech h2 {
    font-size: 2rem;
    margin-bottom: 30px;
}

.tech-list {
    display: grid;
    gap: 24px;
}

.tech-group {
    text-align: left;
}

.tech-group h3 {
    margin-bottom: 12px;
    color: #38bdf8;
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-item {
    position: relative;
    padding: 8px 14px 8px 28px;
    background: #1e293b;
    border-radius: 999px;
    font-size: 0.9rem;
}

/* icons */
.tech-item::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 50%;
    width: 10px;
    height: 10px;
    background: #38bdf8;
    border-radius: 50%;
    transform: translateY(-50%);
}

/* tooltip */
.tooltip {
    position: relative;
    cursor: pointer;
}

/* tooltip box */
.tooltip::after {
    content: attr(data-tip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);

    background: #0f172a;
    color: white;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;

    opacity: 0;
    pointer-events: none;
    transition: 0.25s ease;
}

/* arrow */
.tooltip::before {
    content: "";
    position: absolute;
    bottom: 115%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);

    border: 6px solid transparent;
    border-top-color: #0f172a;

    opacity: 0;
    transition: 0.25s ease;
}

/* show */
.tooltip:hover::after,
.tooltip:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* volunteer */
.volunteer {
    grid-area: volunteer;
    width: 100%;
    height: auto;
    text-align: center;
    margin-bottom: 2rem;
}

.volunteer h2 {
    margin-bottom: 2rem;
    font-size: 2rem;
}

.volunteer img {
    border-radius: 1rem;
    -webkit-border-radius: 1rem;
    -moz-border-radius: 1rem;
    -ms-border-radius: 1rem;
    -o-border-radius: 1rem;
    width: 300px;
}


/* tablet */
@media only screen and (min-width: 768px) {
    nav {
        margin: 0 auto;
        width: 100%;
        display: flex;
        justify-content: space-between;
        padding: 0 2rem;
    }

    nav figure {
        display: flex;
    }

    #personal {
        width: fit-content;
    }

    #education {
        height: 100%;
    }

    main {
        grid-template-areas:
            'introduction introduction'
            'personal education'
            'experience experience'
            'projects projects'
            'tech tech'
            'volunteer volunteer'
        ;
    }
}

/* Desktop */
@media only screen and (min-width: 1200px) {
    main {
        grid-template-areas:
            'introduction introduction introduction'
            'personal education experience'
            'projects projects projects'
            'tech tech tech'
            'volunteer volunteer volunteer'
        ;
    }

    section#education {
        height: fit-content;
    }
}