@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&family=Fira+Code:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');

:root {
    --ff-primary: "DM Sans", sans-serif;
    --ff-accent: "Fira Code", sans-serif;
    --neutral-0: #ffffff;
    --neutral-100: #FBF9F7;
    --neutral-200: #EFEDEB;
    --neutral-300: #DEDCDA;
    --neutral-400: #C0BFBF;
    --neutral-600: #4A4846;
    --neutral-700: #34302D;
    --neutral-800: #201E1D;
    --neutral-900: #1C1A19;
    --blue-200: #E1F1FE;
    --blue-500: #93CEFC;
    --blue-700: #75B0DE;
    --blue-800: #5792C0;
    --blue-900: #022B4A;
    --green-200: #E9F5EA;
    --green-500: #9DD3A9;
    --green-700: #008531;
    --green-900: #132A18;
    --yellow-200: #FFF5E1;
    --yellow-500: #FACC79; 
    --yellow-700: #EA9806; 
    --yellow-900: #4A3003;
    --red-400: #F04438;
    --red-600: #D92D20;
    --radius-4: 4px;
    --radius-6: 6px;
    --radius-8: 8px;
    --radius-10: 10px;
    --radius-12: 12px;
    --radius-16: 16px;
    --radius-20: 20px;
    --radius-24: 24px; 
    --radius-full: 100vmax;
    
    --bg: var(--neutral-100);
    --text: var(--neutral-600);
    --border-clr: var(--neutral-200);
    --header-bg: var(--neutral-0);
    --active-link-clr: var(--neutral-900);
    --section-title-clr: var(--neutral-700);
    --blog-post-title: var(--neutral-700);
    --date-clr: var(--neutral-600);
    --all-post-link-clr: var(--neutral-700);
    --social-link-clr: var(--neutral-600);
    --menu-btn-clr: var(--neutral-700);
    --menu-btn-bg: var(--neutral-0);
    --open-bg: var(--neutral-700);
    --open-clr: var(--neutral-0);
    --social-link-bg-clr: var(--neutral-0);
    --social-link-btn-clr: var(--neutral-700);
    --label-clr: var(--neutral-700);
    --cta-lead-text: var(--neutral-700);
    --theme-btn-bg: var(--neutral-100);
    --section-subtitle-clr: var(--neutral-700);

    --callout-warning-bg: var(--yellow-200);
    --callout-warning-border:  var(--yellow-500);
    --callout-info-bg: var(--blue-200);
    --callout-info-border: var(--blue-500);
    --callout-tip-bg: var(--green-200);
    --callout-tip-border: var(--green-500);

    --code-bg: var(--neutral-200);
    --code-border: var(--neutral-200);
    --token-comment: var(--neutral-600);
    --token-tag: #FF5100;
    --token-punctuation: #FF5100;
    --token-property: #A138FF;
    --token-rule: #1975FB;
    
    --token-attr-name: #A138FF;
    --token-attr-value: #1975FB;
    --token-keyword: #A138FF;
    --token-string: var(--token-rule); 
}

.dark {
    --bg: var(--neutral-900);
    --text: var(--neutral-400);
    --border-clr: var(--neutral-700);
    --header-bg: var(--neutral-800);
    --active-link-clr: var(--neutral-0);
    --section-title-clr: var(--neutral-0);
    --blog-post-title: var(--neutral-0);
    --date-clr: var(--neutral-400);
    --all-post-link-clr: var(--neutral-0);
    --social-link-clr: var(--neutral-400);
    --menu-btn-clr: var(--neutral-0);
    --menu-btn-bg: var(--neutral-900);
    --open-bg: var(--neutral-0);
    --open-clr: var(--neutral-900);
    --social-link-bg-clr: var(--neutral-800);
    --social-link-btn-clr: var(--neutral-0);
    --label-clr: var(--neutral-0);
    --cta-lead-text: var(--neutral-0);
    --theme-btn-bg: var(--neutral-900);
    --section-subtitle-clr: var(--neutral-0);

    --callout-warning-bg: var(--yellow-900);
    --callout-warning-border:  var(--yellow-700);
    --callout-info-bg: var(--blue-900);
    --callout-info-border: var(--blue-700);
    --callout-tip-bg: var(--green-900);
    --callout-tip-border: var(--green-700);

    --code-bg: var(--neutral-800);
    --code-border: var(--neutral-700);
    --token-comment: var(--neutral-400);
    --token-tag: #FC6774;
    --token-punctuation: #FC6774;
    --token-property: #D390F3;
    --token-rule: #68E0FF;
}

.token.tag { color: purple; }
.token.attr-name { color: var(--token-attr-name); }
.token.attr-value { color: var(--token-attr-value); }
.token.keyword { color: var(--token-keyword); }
.token.string { color: var(--token-string); }
.token.comment { color: var(--token-comment); }
.token.punctuation { color: var(--token-punctuation); }
.token.selector { color: var(--token-tag)}
.token.property { color: var(--token-property)}
.token.rule {color: var(--token-rule)}

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

html {
    font-family: var(--ff-primary);
    font-size: 62.5%;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-size: 1.6rem;
}

a {
    text-decoration: none;
}

ul {
    list-style-type: none;
}

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

main {
    position: relative;
    width: 100%;
    max-width: 144rem;
    margin-inline: auto;
    z-index: 0;
    overflow: hidden;
}

.abstract-pattern-left {
    display: none;
}

.abstract-pattern-right {
    display: none;
}

.full-height {
    min-height: 100vh;
    display: grid;
    grid-template-rows: auto 1fr auto;
}

.full-height main section {
    height: 100%;
}

.full-height main .content {
    height: 100%;
}

.border-top {
     border-top: 1px solid var(--border-clr);
}

.visually-hidden {
    position: absolute !important;
    width: 1px; height: 1px;
    margin: -1px; padding: 0; border: 0;
    clip: rect(0 0 0 0); overflow: hidden;
    white-space: nowrap;
}

.content {
    width: 90%;
    max-width: 65rem;
    margin-inline: auto;
    padding-block: 3.2rem;
    padding-inline: 1rem;
    border-left: 1px solid var(--border-clr);
    border-right: 1px solid var(--border-clr);
}

.header-content {
    width: 94%;
    max-width: 67rem;
    margin-inline: auto;
    border: 1px solid var(--border-clr);
    border-radius: var(--radius-10);
    padding: 6px;
    background-color: var(--header-bg);
    position: relative;
}

.page-header {
    margin-top: 1.6rem;
}

.header-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    column-gap: 1rem;
    align-items: center;
}

.header-mobile-menu {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.avatar-img {
    width: 4rem;
    height: 4rem;
    border-radius: var(--radius-10);
}

.page-nav {
    display: none;
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: var(--header-bg);
    border-radius: var(--radius-10);
    transform: translateY(calc(100% + 1.2rem));
    z-index: 999;
    padding: 1.2rem;
    box-shadow: .8rem .8rem 1.6rem rgba(0, 0, 0, .06);
}

.page-nav.show {
    display: block;
}

.page-nav-list {
    display: flex;
    flex-direction: column;
    gap: .6rem;
}

.page-nav-list li:not(:last-of-type) {
    border-bottom: 1px solid var(--border-clr);    
}

.nav-link {
    display: block;
    font-size: 1.8rem;
    line-height: 150%;
    letter-spacing: -0.2px;
    padding: .35rem;
    border-radius: var(--radius-10);
    color: var(--text);
    position: relative;
}

.nav-link-active {
    font-weight: 500;
    color: var(--active-link-clr);
}

.menu-btn,
.theme-btn {
    cursor: pointer;
    width: 4rem;
    height: 4rem;
    border-radius: var(--radius-10);
    border: none;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-btn svg path {
    stroke: var(--menu-btn-clr);
}

.menu-btn.open {
    background-color: var(--open-bg);
}

.menu-btn.open svg path {
    stroke: var(--open-clr);
}

.theme-btn {
    border: 1px solid var(--border-clr);
    background-color: var(--theme-btn-bg);
}

.page-title,
.section-title {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 130%;
    letter-spacing: -0.5px;
    color: var(--section-title-clr);
    z-index: 0;
}

.index-page-title,
.about-page-title,
.blog-page-title {
    position: relative;
    margin-block: 0;
}

.index-page-title::after {
    content: "";
    width: 25rem;
    height: .8rem;
    background-color: var(--blue-500);
    position: absolute;
    left: 0;
    bottom: 0;
    transform: translateY(-5px);
    z-index: -1;
}

.section-title {
    margin-block: 0;
    margin-bottom: 3.2rem;
    position: relative;
}

.section-title::after,
.blog-page-title::after {
    content: "";
    width: 4rem;
    height: 3px;
    background-color: var(--blue-500);
    position: absolute;
}

.section-title::after {
    bottom: 20%;
    right: 18%;
}

.introduction {
    padding-block: 3.2rem;
}

.lead-text {
    font-size: 1.8rem;
    line-height: 150%;
    letter-spacing: -0.2px;
    margin-block: 0;
}

.lead-text:not(:last-child) {
    margin-bottom: 3.2rem;
}

.social-links-wrapper {
    display: flex;
    gap: 1.2rem;
    align-items: center;
}

.social-link-btn {
    display: inline-block;
    width: 4rem;
    height: 4rem;
    background-color: var(--social-link-bg-clr);
    border: 1px solid var(--border-clr);
    border-radius: var(--radius-10);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-link-btn svg path {
    fill: var(--social-link-btn-clr);
}

.blog-posts-list {
    display: flex;
    flex-direction: column;
    gap: 2.4rem;
    margin-inline: 0;
    padding-inline: 0;
}

.blog-title {
    display: inline-block;
    font-size: 20px;
    line-height: 130%;
    letter-spacing: -0.5px;
    font-weight: 600;
    color: var(--blog-post-title);
    margin-bottom: 0.8rem;
}

.date {
    font-style: italic;
    font-size: 1.6rem;
    color: var(--date-clr);
    margin-block: 0;
}

.all-posts-link {
    display: inline-block;
    margin-top: 3rem;
    color: var(--all-post-link-clr);
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 150%;
    letter-spacing: -0.2px;
    border-bottom: 2px solid skyblue;
}

.footer-content {
    width: 90%;
    max-width: 65rem;
    margin-inline: auto;
    padding-block: 1.6rem 1rem;
    padding-inline: 1rem;
    border-left: 1px solid var(--border-clr);
    border-right: 1px solid var(--border-clr);
    display: flex;
    justify-content: space-between;
    color: var(--neutral-600);
}

.footer-content p {
    color: var(--text);
    padding-block: 0;
    margin-block: 0;
}

.footer-content .social-links-wrapper .social-link svg path {
    fill: var(--social-link-clr);
}

/* ABOUT ME */
.about-page-title::after {
    content: "";
    width: 150px;
    height: 8px;
    background-color: var(--blue-500);
    position: absolute;
    left: 0;
    bottom: 5px;
    z-index: -1;
}

.about-me-content {
    padding-top: 2.4rem;
}

.favorite-books-wrapper {
    margin-bottom: 3.2rem;
}

.books-list {
    list-style-type: initial;
    padding-left: 1.15rem;
}

.books-list li {
    font-size: 1.8rem;
    line-height: 150%;
    letter-spacing: -0.2px;
}

.books-list li span {
    font-weight: 600;
}

.workspace-img {
    border-radius: var(--radius-6);
    margin-bottom: 3.2rem;
}

.follow-me-wrapper {
    margin-top: 2.4rem;
}

.section-subtitle {
    color: var(--section-subtitle-clr);
    font-size: 2.4rem;
    font-weight: 600;
    line-height: 130%;
    letter-spacing: -0.5px;
    margin-bottom: 1.6rem;
}

/* NEWSLETTER PAGE */
.newsletter-content {
    padding-block: 1.6rem;
}

.newsletter-content .lead-text {
    margin-bottom: 1.6rem;
}

.cta-lead-text {
    font-size: 2rem;
    font-weight: 600;
    line-height: 130%;
    letter-spacing: -0.5px;
    color: var(--cta-lead-text);
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    align-items: start;
    gap: 1.6rem;
}

label {
    font-size: 1.8rem;
    line-height: 150%;
    letter-spacing: -0.2px;
    margin-bottom: 6px;
    color: var(--label-clr);
}

.form-input-wrapper {
    width: 100%;
}

.form-input {
    font-family: var(--ff-primary);
    font-size: 1.6rem;
    color: var(--neutral-600);
    width: 100%;
    padding: 1.6rem;
    border-radius: var(--radius-10);
    border: 1px solid var(--neutral-300);
    background-color: var(--neutral-0);
}

.form-input.success {
    border-color: var(--green-700);
}

.form-input.error {
    border-color: var(--red-600);
}

::placeholder {
    font-size: 1.8rem;
    font-family: var(--ff-primary);
    line-height: 150%;
    letter-spacing: -0.2px;
    opacity: 1;
    color: var(--neutral-600);
}

.validation-msg {
    display: none;
}

.validation-msg.success {
    display: block;
    margin-top: .6rem;
    color: var(--green-700);
}

.validation-msg.error {
    display: block;
    margin-top: .6rem;
    color: var(--red-600);
}

.submit-btn {
    cursor: pointer;
    background-color: var(--blue-500);
    padding: 1.2rem 2.4rem;
    border: none;
    border-radius: var(--radius-10);
    color: var(--neutral-900);
    font-family: var(--ff-primary);
    font-size: 1.8rem;
    font-weight: 500;
    line-height: 130%;
    letter-spacing: -0.2px;
}

.info {
    font-size: 1.6rem;
    line-height: 130%;
}

/* BLOG PAGE */
.blog-page-title {
    margin-bottom: .6rem;
}

.blog-page-title::after {
    bottom: 10%;
    right: 35%;
}

.blog-posts-article {
    margin-bottom: 2rem;
}

.blog-posts-list-full {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    padding: 0;
}

.blog-list-item-full:not(:last-child) {
    border-bottom: 1px solid var(--border-clr);
    padding-block: 2rem;
}

.blog-list-item-full:last-child {
   padding-top: 2rem;
}

.description {
    margin-top: 8px;
    font-size: 1.8rem;
    line-height: 150%;
    letter-spacing: -0.2px;
}

/* BLOG DETAILS PAGE */
.blog-details-title {
   font-size: 4rem;
   line-height: 130%;
   letter-spacing: -0.5px;
   color: var(--section-title-clr);
}

.blog-details-section .date {
    margin-block: 1.6rem;
}

/* PARSED MARKDOWN STYLING */
.blog-post-content p {
    font-size: 1.8rem;
    line-height: 150%;
    letter-spacing: -0.2px;
}

.blog-post-content p:not(:last-child) {
    margin-bottom: 2.4rem;
}

.blog-post-content hr {
    color: var(--border-clr);
    width: 100%;
    height: 1px;
    opacity: .15;
}

.blog-post-content h2 {
    color: var(--section-title-clr);
    font-size: 2.8rem;
    line-height: 130%;
    letter-spacing: -0.5px;
    margin-block: 2.4rem 1.2rem;
}

.blog-post-content ol,
.blog-post-content ul {
    padding-bottom: 2.4rem;
    padding-left: 2rem;
}

.blog-post-content ul {
    list-style-type: initial;
}

.blog-post-content ol li,
.blog-post-content ul li {
    padding-bottom: 1.2rem;
    font-size: 1.8rem;
    line-height: 150%;
    letter-spacing: -0.2px;
}

.blog-post-content blockquote {
    padding: 1.2rem;
    column-gap: 1rem;
    margin-inline: 0;
    border-left: .5rem solid var(--neutral-400);
    margin-bottom: 2rem;
}

.callout-warning,
.callout-info,
.callout-tip {
    border-radius: var(--radius-12);
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 2rem;
}

.blog-post-content blockquote.callout-warning {
    background-color: var(--callout-warning-bg);
    border: 1px solid  var(--callout-warning-border);
}

.blog-post-content blockquote.callout-info {
    background-color: var(--callout-info-bg);
    border: 1px solid  var(--callout-info-border);
}

.blog-post-content blockquote.callout-tip {
    background-color: var(--callout-tip-bg);
    border: 1px solid var(--callout-tip-border);
}

.blog-post-content blockquote img {
    display: block;
    margin-top: .5rem;
}

.blog-post-content blockquote p {
    margin-block: 0;
    color: var(--section-title-clr);
}

.blog-post-content blockquote p strong {
    font-size: 2rem;
    color: var(--blog-post-title);
    line-height: 130%;
    letter-spacing: -0.5px;
    margin-bottom: .6rem;
}

pre {
    background-color: var(--code-bg);
    border-radius: var(--radius-12);
    border: 1px solid var(--code-border);
    padding: 1rem;
    margin-bottom: 1rem;
    text-wrap: wrap;
}

code {
    font-family: var(--ff-accent);
    font-size: 1.6rem;
    line-height: 146%;
    letter-spacing: -0.4px;
    background-color: var(--code-bg);
    border-radius: var(--radius-6);
    padding: 0.25rem;
    color: var(--token-tag);
}

table{
    padding: 0;
    width: 100%;
    min-width: 100%;
    border-collapse: collapse;
}

th, tbody, td, tr {
    padding: 0;
    margin: 0;
    border: 1px solid var(--border-clr);
}

th {
    font-size: 1.8rem;
    color: var(--neutral-700);
    line-height: 150%;
    text-align: left;
    padding: 1rem .5rem;
}

td {
    padding-inline: .5rem;
}

/* MEDIA QUERIES */
@media screen and (min-width: 48rem) {
    .content {
        padding-inline: 1.25rem;
    }

    .header-grid {
        column-gap: 2rem;
    }

    .header-mobile-wrapper {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .header-mobile-menu {
        justify-content: start;
    }

    .menu-btn {
        display: none;
    }

    .page-nav {
        display: block;
        position: initial;
        left: initial;
        bottom: initial;
        width: initial;
        background-color: transparent;
        border-radius: 0;
        transform: translateY(0);
        z-index: 0;
        padding: 0;
        box-shadow: none;
    }

    .page-nav-list {
        flex-direction: row;
        gap: 2.4rem;
        margin-block: 0;
    }

    .page-nav-list li:not(:last-of-type) {
        border-bottom: none;    
    }

    .nav-link-active {
        font-weight: 400;
        color: var(--active-link-clr);
        position: relative;
    }

    .footer-content {
        padding-inline: 1.25rem;
    }

    .section-title::after {
        bottom: 20%;
        right: 57%;
    }

    .blog-page-title::after {
        bottom: 20%;
        right: 65%;
    }
}

@media screen and (min-width: 63.75rem) {
    .page-header {
        margin-top: 2rem;
    }

    .nav-link-active::after,
    .nav-link::after  {
        content: "";
        width: 100%;
        height: 3px;
        position: absolute;
        left: 0;
        bottom: 0.5rem;
    }
    
    .nav-link-active::after {
        background-color: var(--blue-500);
    }

    .nav-link:hover::after {
        background-color: var(--blue-500);
    }

    .nav-link:focus {
        outline: 2px solid var(--blue-800);
    }

    .content {
        padding-block: 4.8rem;
    }

    .blog-title:hover,
    .all-posts-link:hover {
        opacity: 0.7;
    }

    .all-posts-link:focus {
        outline: 2px solid var(--blue-800);
        outline-offset: 4px;
        border-radius: var(--radius-10);
        border-color: transparent;
    }

    .blog-title:focus {
        outline: 2px solid var(--blue-800);
        outline-offset: 2px;
        border-radius: var(--radius-10);
    }

    .form-input:hover {
        border: 1px solid var(--neutral-300);
        background-color: var(--neutral-200);
    }

    .submit-btn:hover {
        background-color: var(--blue-700);
    }

    .submit-btn:focus,
    .form-input:focus {
        outline: 2px solid var(--blue-800);
        outline-offset: 2px;
    }

}

@media screen and (min-width: 93.75rem) {
    .abstract-pattern-left {
        position: absolute;
        top: 0;
        left: 0;
        transform: translate(-50%, 40%);
        display: block;
        z-index: -1;
    }

    .abstract-pattern-right {
        position: absolute;
        top: 0;
        right: 0;
        display: block;
        z-index: 100;
        transform: translate(50%, 0);
    }
}