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

html { scroll-behavior: smooth; }

html, body { overflow-x: hidden; }

:root {
    /* ===== COLORS ===== */
    --primary: #6466AD;
    --secondary: #8A8CCD;
    --text: #333333;
    --background: #F5F5F5;
    --white: #FFFFFF;
    --black: #000000;
    --success: #4CAF50;
    --error: #F44336;
    --border: #D9D9D9;
    --section-desc: #666666;
    --footer: #888888;
    /* ===== FONT ===== */
    --font-poppins: 'Poppins', sans-serif;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
}

body {
    font-family: var(--font-poppins);
    background-color: var(--background);
}

.text-highlight {
    font-weight: var(--font-bold);
    color: var(--primary);
}

.btn {
    cursor: pointer;
    height: 3rem;
    border: none;
    font-family: var(--font-poppins);
    font-size: 1rem;
    font-weight: var(--font-semibold);
    padding: 0.5rem 1.5rem;
    text-decoration: none;
    
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover { background-color: var(--secondary); }

.section { 
    padding: 2.5rem 1rem; 
    scroll-margin-top: 6rem; 
    opacity: 0; 
    transform: translateY(40px); 
}

.section.section--visible { animation: fadeRise 0.6s forwards; }

.section__title { 
    color: var(--text);
    text-align: center;
    font-weight: var(--font-semibold);
}

.section__desc {
    margin-top: 0.5rem;
    color: var(--section-desc);
    text-align: center;
    line-height: 1.5;
}

.tags {
    list-style-type: none;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.tag {
    padding: 0.125rem 0.5rem;
    border-radius: 3.125rem;
    background-color: var(--secondary);
    color: var(--white);
    font-size: 0.75rem;
}

.input {
    display: block;
    min-height: 3rem;
    border: 1px solid var(--border);;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-family: var(--font-poppins);
    box-sizing: border-box;
}

.error {
    color: var(--error);
    font-size: 0.75rem;
    display: none;
}

.error--visible { display: block; }

@keyframes fadeRise {
    from {
        opacity: 0;
        transform: translateY(40px):
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== HEADER ===== */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    padding-inline: 1rem;

    position: fixed;
    width: 100%;
    background-color: var(--background);
    z-index: 1000;
}

.nav.scrolled { box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1); }

.nav__wrapper {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__logo {
    height: auto;
    width: 100%;
    display: block;
    max-width: 100px;
    cursor: pointer;
}

.nav__divider {
    height: 1px;
    width: 25px;
    transform: rotate(90deg);
    background-color: var(--border);
    display: none;
}

.nav__list { display: none; list-style-type: none; }

.nav__link {
    text-decoration: none;
    color: var(--text);
    font-weight: var(--font-medium);
    position: relative;
}

.nav__link::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background-color: var(--secondary);
    transition: width 0.3s ease;
}

.nav__link:hover::after { width: 100%; }

.nav__toggle {
    cursor: pointer;
    height: 40px;
    width: 40px;
    background-color: transparent;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    position: relative;
}

.nav__toggle-bar {
    height: 2px;
    width: 20px;
    background-color: var(--text);
    border-radius: 0.5rem;
    position: absolute;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav__toggle-bar:nth-child(1) { transform: translateY(-4px); }

.nav__toggle-bar:nth-child(3) { transform: translateY(4px); }

.nav__toggle.toggle--active .nav__toggle-bar:nth-child(1) { top: unset; transform: rotate(45deg); }

.nav__toggle.toggle--active .nav__toggle-bar:nth-child(2) { opacity: 0; }

.nav__toggle.toggle--active .nav__toggle-bar:nth-child(3) { top: unset; transform: rotate(135deg); }

.header__menu {
    position: fixed;
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--background);
    z-index: 999;

    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
}

.header__menu.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
}

.header__list { list-style-type: none; text-align: center; }

.header__item:not(:first-child) { margin-top: 2rem; }

.header__link {
    text-decoration: none;
    color: var(--text);
    font-size: 2rem;
    position: relative;
}

.header__link::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background-color: var(--secondary);
    transition: width 0.3s ease;
}

.header__link:hover::after { width: 100%; }

/* ===== HERO ===== */
.hero {
    height: 100vh;
    padding: 4.375rem 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero__greeting {
    font-size: clamp(1.5rem, 3.5vw, 3rem);
    color: var(--text);
    font-weight: var(--font-bold);
}

.hero__main {
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--text);
}

.hero__sub {
    font-size: clamp(1.5rem, 3.5vw, 3rem);
    color: var(--text);
}

.hero__desc {
    margin-top: 1rem;
    font-size: clamp(1rem, 1vw + 0.645rem, 1.25rem);
    line-height: 1.5;
    color: var(--text);
}

.hero__btn { margin-top: 2rem; }

/* ===== ABOUT ME ===== */
.about__img {
    height: auto;
    width: 100%;
    display: block;
    max-width: 350px;
    margin: 0 auto;
    pointer-events: none;
}

.about__right { margin-top: 3rem; }

.about__desc { 
    text-align: start; 
    line-height: 1.5;
    margin-top: 1rem;
}

.about__btn { margin-top: 2rem; }

/* ===== JOURNEY ===== */
.journey__timeline { 
    margin-top: 2rem; 
    position: relative;
    display: grid;
    gap: 1rem;
}

.journey__timeline::before {
    content: "";
    width: 1px;
    background-color: var(--border);
    position: absolute;
    top: 16px;
    bottom: 0;
    left: 16px;
    transform: translateX(-50%);
}

.journey__present {
    color: var(--error);
    position: absolute;
    top: 5px;
    left: 16px;
    transform: translate(-50%, -50%);
    z-index: 1;
}

.journey__item { position: relative; }

.journey__item::before {
    content: "";
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background-color: var(--success);
    position: absolute;
    top: 16px;
    left: 16px;
    transform: translate(-50%, -50%);
}

.journey__card {
    background-color: var(--primary);
    color: var(--white);
    padding: 1rem;
    margin-left: 3rem;
    position: relative;
    box-shadow: 0 4px 12px rgb(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateX(0);
}

.journey__card.card--visible { animation: slideInRight 0.8s forwards; }

.journey__card::after {
    content: "";
    height: 16px;
    width: 16px;
    background-color: var(--primary);
    clip-path: polygon(0 50%, 100% 0, 100% 100%);
    position: absolute;
    top: 7px;
    left: -7px;
    transform: translateX(-50%);
    box-shadow: 0 4px 12px rgb(0, 0, 0, 0.1);
}

.journey__card-icon {
    height: auto;
    width: 100%;
    display: block;
    max-width: 50px;
    pointer-events: none;
}

.journey__card-title {
    font-size: 1rem;
    font-weight: var(--font-semibold);
    line-height: 1.2;
    margin-top: 1rem;
}

.journey__card-sub {
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.journey__divider {
    height: 15px;
    width: 1px;
    background-color: var(--border);
    display: none;
}

.journey__card-range {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.journey__card-range > span { font-size: 1.125rem; }

.journey__card-range > p { font-size: 0.75rem; }

.journey__card-location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.journey__card-location > span { font-size: 1.125rem; }

.journey__card-location > p { font-size: 0.75rem; }

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(500px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== PROJECTS ===== */
.projects__list { 
    margin-top: 2rem; 
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.projects__project {
    opacity: 0;
    transform: translateY(100px);
}

.projects__project.project--visible { animation: slideInUp 0.8s forwards; }

.projects__img {
    heght: auto;
    width: 100%;
    display: block;
    border-radius: 0.5rem;
    object-fit: cover;
    box-shadow: 0 2px 8px rgb(0, 0, 0, 0.1);
    pointer-events: none;
}

.projects__right { margin-top: 2rem; }

.projects__category {
    font-size: 0.875rem;
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.7px;
}

.projects__title {
    font-size: 1.5rem;
    font-weight: var(--font-semibold);
    margin-top: 0.25rem;
}

.projects__desc {
    margin-top: 0.75rem;
    line-height: 1.5;
}

.projects__btn { margin-top: 2rem; }

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(100px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== SKILLS ===== */
.skills__grid {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.skills__card {
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 0.75rem;
    background-color: var(--primary);
    box-shadow: 0 4px 12px rgb(0, 0, 0, 0.15);
}

.skills__card:hover { background-color: var(--secondary); }

.skills__icon {
    height: auto;
    width: 100%;
    display: block;
    max-width: 40px;
    pointer-events: none;
}

.skills__text {
    color: var(--white);
    text-align: center;
    font-size: 0.875rem;
}

/* ===== CONTACT ===== */
.contact__social-list {
    list-style-type: none;
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact__social-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact__social-icon {
    min-height: 3rem;
    min-width: 3rem;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--primary);
    color: var(--white);
    font-size: 1.2rem;
}

.contact__social-text { font-weight: var(--font-semibold); }

.contact__social-link {
    text-decoration: none;
    font-size: 0.875rem;
    color: var(--text);
    position: relative;
}

.contact__social-link::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background-color: var(--secondary);
    transition: width 0.3s ease;
}

.contact__social-link:hover::after { width: 100%; }

.contact__right { margin-top: 2rem; }

.contact__form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact__form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
}

.contact__form-label {
    font-size: 1rem;
    font-weight: var(--font-semibold);
}

.contact__form-input { padding-inline: 1rem; }

.contact__form-textarea {
    resize: none;
    min-height: 7.5rem;
    padding: 1rem;
}

.contact__form-submit { margin-top: 2rem; }

/* ===== FOOTER ===== */
.footer { padding: 1rem; }

.footer__copyright {
    color: var(--footer);
    font-size: 0.8rem;
    text-align: center;
}

/* ===== MEDIA QUERIES ===== */
/* Tablet - 600px - 1024px */
@media screen and (min-width: 600px) {
    .section { padding-inline: 3rem; }

    .section__title { font-size: 2rem; }

    .btn { width: fit-content; }
    
    /* ===== HEADER ===== */
    .nav { padding-inline: 2rem; }

    /* ===== HERO ===== */
    .hero { padding-inline: 3rem; }

    .hero__desc { max-width: 80%; }

    /* ===== ABOUT ME ===== */
    .about__title { margin-bottom: 1rem; }

    /* ===== JOURNEY ===== */
    .journey__timeline { margin-top: 3rem; }

    .journey__card-header { 
        display: flex; 
        gap: 1rem; 
    }

    .journey__card-icon { max-height: 50px; }

    .journey__card-title { margin-top: unset; }

    .journey__card-details { 
        display: flex; 
        align-items: center;
        gap: 0.5rem;
        margin-top: 1rem;
    }

    .journey__divider { display: block; }

    .journey__card-range { margin-top: unset; }

    .journey__card-location { margin-top: unset; }

    /* ===== PROJECTS ===== */
    .projects__list { margin-top: 3rem; }

    /* ===== SKILLS ===== */
    .skills__grid {
        grid-template-columns: repeat(3, 1fr);
        margin-top: 3rem;
    }

    /* ===== CONTACT ===== */
    .contact__form { align-items: flex-end; }
}

/* Desktop - 1024px - 1440px */
@media screen and (min-width: 1024px) {
    .section { padding: 5rem; }

    /* ===== HEADER ===== */
    .nav { padding-inline: 5rem; }

    .nav__divider { display: block; }

    .nav__list {
        display: flex;
        gap: 2rem;
    }

    .nav__toggle { display: none; }

    /* ===== HERO ===== */
    .hero { padding-inline: 5rem; }

    .hero__desc { max-width: 31.25rem; margin-top: 2rem; }

    /* ===== ABOUT ME ===== */
    .about {
        display: flex;
        align-items: center;
        gap: 3rem;
    }

    .about__left, .about__right { flex: 1; }

    .about__right { margin-top: unset; }

    .about__title { text-align: start; }

    /* ===== JOURNEY ===== */
    .journey__timeline { 
        margin-top: 4rem;
        gap: 3rem; 
    }

    .journey__timeline::before { left: 50%; }

    .journey__present { left: 50%; }

    .journey__item { width: calc(50% - 40px); }

    .journey__item:nth-child(odd) { justify-self: flex-end; }

    .journey__item:nth-child(odd)::before { left: -40px; }

    .journey__item:nth-child(even) { justify-self: flex-start; }

    .journey__item:nth-child(even)::before {
        left: unset;
        right: -40px;
        transform: translate(50%, -50%);
    }

    .journey__card { margin-left: unset; }
    
    .journey__item:nth-child(even) > .journey__card::after {
        clip-path: polygon(0 0, 100% 50%, 0 100%);
        left: unset;
        right: -7px;
        transform: translateX(50%);
    }

    .journey__item:nth-child(even) > .journey__card.card--visible { animation: slideInLeft 0.8s ease-out forwards; }

    @keyframes slideInLeft {
        from {
            opacity: 0;
            transform: translateX(-500px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    /* ===== PROJECTS ===== */
    .projects__list { 
        margin-top: 4rem;
        display: flex;
        flex-direction: column;
        gap: 4rem;
    }

    .projects__project { 
        display: flex; 
        gap: 3rem;
    }

    .projects__left, .projects__right { flex: 1 }

    .projects__right { margin-top: unset; }

    .project--reverse { flex-direction: row-reverse; }

    .projects__project:nth-child(odd).project--visible { animation: slideInRight 0.8s forwards; }

    .projects__project:nth-child(even).project--visible { animation: slideInLeft 0.8s forwards; }

    /* ===== SKILLS ===== */
    .skills__grid {
        grid-template-columns: repeat(4, 160px);
        justify-content: center;
        gap: 1rem;
    }

    /* ===== CONTACT ===== */
    .contact {
        display: flex;
        gap: 3rem;
    }
    
    .contact__left, .contact__right { flex: 1 }

    .contact__title, .contact__desc { text-align: start; }

    .contact__right { margin-top: unset; }
}

@media screen and (min-width: 1440px) {
    .section { padding-inline: 7.5rem; }
    
    /* ===== HEADER ===== */
    .nav { padding-inline: 7.5rem; }

    /* ===== HERO ===== */
    .hero { padding-inline: 7.5rem; }

    /* ===== ABOUT ME ===== */
    .about { gap: 4rem; }

    .about__right { flex: 1.5; }

    /* ===== JOURNEY ===== */
    .journey__timeline { margin-top: 5rem; }

    /* ===== PROJECTS ===== */
    .projects__list { gap: 5rem; }

    .projects__project { gap: 5rem; }

    .projects__left { flex: 1; }

    .projects__right { flex: 1.5; }

    .projects__img { max-width: 37.5rem; }

    .contact { gap: 5rem; }
}