/* ==================== VARIABLES ==================== */
:root {
    --colorPrimary: #8BC34A; /* #ffa726 */
    --colorSecondary: #8BC34A; /* #ffa726 */
    --textColorPrimary: rgba(255, 255, 255, 0.87);
    --textColorSecondary: rgba(255, 255, 255, 0.6);
    --backgroundColorMain: #121212;
    --backgroundColorOverlay: #242424;
    --mainWidth: 660px;
    --headerFixedWidth: 250px;
    --fontFamily: 'Inter', sans-serif;
    --fontWeightBody: 400;
    --fontWeightHeading: 600;
    --fontSize: 16px;
    --fontSizeSmall: 14px;
    --letterSpacing: -0.011em;
    --lineHeight: calc(var(--fontSize) * 1.6);
    -webkit-font-smoothing: initial;
    -moz-osx-font-smoothing: initial;
    font-family: var(--fontFamily);
    font-size: var(--fontSize);
    font-weight: var(--fontWeightBody);
    line-height: var(--lineHeight);
    letter-spacing: var(--letterSpacing);
}

[data-theme='light'] {
    --colorPrimary: #4D7123;
    --colorSecondary: #4D7123;
    --textColorPrimary: rgba(0, 0, 0, 0.77);
    --textColorSecondary: rgba(0, 0, 0, 0.67);
    --backgroundColorMain: #FBFAF2;
    --backgroundColorOverlay: #EBEAE2;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}


/* ==================== SECTIONS ==================== */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0 calc(var(--lineHeight) * 2);
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    color: var(--textColorSecondary);
    background-color: var(--backgroundColorMain);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

header {
    position: relative;
    margin-bottom: 10vh;
    max-width: var(--mainWidth);
    width: 100%;
    height: 90vh;
    display: flex;
    flex-flow: column nowrap;
    justify-content: flex-end;
}

main {
    max-width: var(--mainWidth);
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
}

footer {
    margin-top: calc(var(--lineHeight) * 4);
    padding-bottom: calc(var(--lineHeight) * 4);
    width: 100%;
    max-width: var(--mainWidth);
    text-align: right;
    font-size: var(--fontSizeSmall);
    color: var(--textColorPrimary);
}

.main-section {
    width: 90%;
    margin-left: 10%;
}

.main-section:not(:first-child) {
    padding-top: calc(var(--lineHeight) * 4);
}

.skill-section {
    max-width: 25%;
    margin: 0 calc(var(--lineHeight) * 1) var(--lineHeight) 0;
}

.experience-section:not(:last-child) {
    margin: 0 0 calc(var(--lineHeight) * 1.5) 0;
}

.project-section:not(:last-child) {
    margin: 0 0 calc(var(--lineHeight) * 1.5) 0;
}

#skills {
    display: flex;
    flex-flow: row wrap;
    justify-content: space-between;
    align-items: flex-start;
}


/* =================== TYPOGRAPHY =================== */
h1, h2, h3 {
    color: var(--colorPrimary);
    font-weight: var(--fontWeightHeading);
}

h1 {
    font-size: min(calc(var(--fontSize) + 8vw), calc(var(--fontSize) * 9));
    line-height: min(calc(var(--lineHeight) + 5vw), calc(var(--lineHeight) * 5));
    margin-top: 0;
    margin-bottom: calc(var(--lineHeight) / 2);
}

h1 span {
    display: block;
    font-size: min(calc(var(--fontSize) + 6vw), calc(var(--fontSize) * 6));
}

h2 {
    width: 90%;
    margin: 0 0 calc(var(--lineHeight) / 2) -10%;
    font-size: 1.5rem;
}

h3 {
    font-size: 1rem;
    text-transform: uppercase;
    margin: 0;
    color: var(--textColorPrimary);
}

h4 {
    margin: 0;
    color: var(--textColorPrimary);
}

b {
    color: var(--textColorPrimary);
}

a {
    color: var(--colorSecondary);
    text-decoration: none;
    transition: all 0.2s ease-in-out;
}

em {
    display: block;
    color: var(--textColorSecondary);
    margin-bottom: calc(var(--lineHeight) / 2);
}

p {
    margin: 0;
}

header i {
    display: inline-block;
    margin-top: min(1vw, calc(var(--lineHeight) / 2));
    font-size: 1.5rem;
}

header p {
    font-size: 1.5rem;
    line-height: calc(var(--lineHeight) * 1.2);
    margin-top: var(--lineHeight);
}

#background p + p {
    margin-top: var(--lineHeight);
}

#projects p + p {
    margin-top: calc(var(--lineHeight) / 2);
}


/* ===================== NAV ======================= */
nav {
    margin-top: var(--lineHeight);
}

nav ul {
    display: flex;
    flex-flow: row wrap;
    justify-content: center;
}

nav li:not(:last-of-type) {
    margin-right: 1rem;
}

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

.link {
    border-bottom: 1px solid var(--colorSecondary);
}

.link:hover {
    color: var(--textColorPrimary);
    border-color: var(--textColorPrimary);
}

.button {
    margin-right: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid transparent;
    display: inline-flex;
    justify-content: center;
    align-items: center;
}

.button:last-child {
    margin-right: 0;
}

.button:hover {
    border-color: var(--colorSecondary);
}

.button img {
    width: 2rem;
}

#night-button {
    display: none;
}

.theme-button {
    position: absolute;
    top: calc(var(--lineHeight) * 2);
    right: 0;
    width: 2.5rem;
    height: 2.5rem;
    background-color: var(--colorPrimary);
    border: 1px solid var(--colorPrimary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.audio-button {
    outline: none;
    border: 1px solid var(--colorPrimary);
    border-radius: 2rem;
    width: 2rem;
    height: 2rem;
    margin-left: 0.5rem;
    display: inline-block;
    background-color: var(--colorPrimary);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.theme-button svg,
.audio-button svg {
    fill: var(--backgroundColorMain);
    transition: all 0.2s ease-in-out;
}

.theme-button:hover, 
.audio-button:hover {
    background-color: var(--backgroundColorMain);
}

.theme-button:hover svg,
.audio-button:hover svg {
    fill: var(--colorPrimary);
}

.project-links a {
    margin-right: 1rem;
}

.contact-links {
    margin-top: var(--lineHeight);
}

.contact-links svg {
    fill: var(--colorPrimary);
}

/* ==================== MEDIA QUERIES ==================== */
@media screen and (min-width: 960px) {
    :root {
        --fontSize: 18px;
        --fontSizeSmall: 16px;
        --letterSpacing: -0.014em;
        --lineHeight: calc(var(--fontSize) * 1.6);
    }
}

@media screen and (max-height: 420px) {
    :root {
        --fontSize: 16px;
        --fontSizeSmall: 14px;
        --letterSpacing: -0.011em;
        --lineHeight: calc(var(--fontSize) * 1.6);
    }

    header {
        height: auto;
    }

    h1 {
        margin-top: calc(var(--lineHeight) * 2);
    }
}