/*
 * Base styling for the Polychromatic websites.

 * Copyright (C) 2017-2026 Luke Horwell <code (at) horwell.me>
 *
 * Responsive breakpoints (max-width/min-width):
   - sm: 540px-541px;
   - md: 720px-721px;
   - lg: 960px-961px;
   - xl: 1140px-1141px;
   - Nobile trigger: 720px-721px;
*/
:root {
    /* Colours */
    --primary: #00FF00;
    --secondary: #008000;

    --text-colour: white;
    --grey-colour: #808080;
    --grey-colour-light: #ababab;
    --bg-colour: #161616;
    --bg-secondary: #000;
    --bg-secondary-light: #0d0d0d;
    --bg-button: #323232;
    --bg-button-hover: #3f3f3f;
    --bg-button-focus: #252525;
    --bg-border-focus:  #202020;
    --sidebar-heading: #969696;
    --table-colour: #121212;
    --table-colour-alt: #181818;
    --table-colour-head: #282828;
    --border-colour: #2D2D2D;
    --button-text: #D6D6D6;
    --tab-border-focus: #474747;
    --tab-border-active: #606060;
    --red: #800000;
    --warning: #e6ac00;
    --grey-colour-dark: #575757;

    /* Fonts */
    --primary-font: 'Play', 'Ubuntu', 'DejaVu Sans', 'Open Sans', sans-serif;

    /* Transitions */
    --btn-speed: 0.25s;
    --page-speed: 0.3s;

    /* Dimensions */
    --header-height: 125px;
}


/******************************
* Typography
******************************/
@font-face {
    font-family: "Play";
    src: url("/assets/lib/Play-Regular.ttf")  format("truetype");
}

body {
    font-family: Play, Ubuntu, "DejaVu Sans", "Open Sans", sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
}


/******************************
* Base
******************************/
a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: var(--secondary);
    text-decoration: underline;
}

a:hover code {
    color: green;
}

a:focus {
    outline-color: var(--primary);
}

hr {
    border-color: var(--bg-colour);
}

h1, h2, h3 {
    color: var(--primary);
    font-weight: 500;
}

pre {
    background: var(--bg-secondary);
    border: 1px solid var(--bg-colour);
    color: lime;
    padding: 1em 1.5em;
    overflow-x: auto;
    white-space: break-spaces;
}

code {
    color: #A9A9A9;
    font-size: 1.1em;
}


/******************************
* Blockquotes
******************************/
blockquote {
    background: var(--bg-secondary);
    border-left: 4px solid var(--secondary);
    color: var(--grey-colour-light);
    margin: 15px 0;

    p {
        padding: 1em;
        margin: 0;

        + p {
            padding-top: 0;
        }

        + .highlighter-rouge {
            margin-top: -15px;
        }
    }

    ul {
        margin: 0;
        padding-left: 3em;
        padding-bottom: 1.5em;
    }

    strong {
        color: var(--secondary);
    }

    &.pkg-cmd {
        padding: 10px;

        &::before {
            content: "$";
            color: lime;
            padding-right: 2px;
        }
    }

    &.alert {
        border-color: var(--red);

        strong {
            color: var(--red);
        }
    }

    &.warning {
        border-color: var(--warning);

        strong {
            color: var(--warning);
        }
    }
}


/******************************
* Buttons
******************************/
.btn {
    background-color: var(--bg-button);
    color: var(--button-text);
    border: 2px solid var(--border-colour);
    display: inline-flex;
    text-decoration: none;
    padding: 0.25em 1em;
    margin: 0.25em;
    font-size: 1em;
    line-height: 1.5em;

    &:focus {
        background-color: var(--bg-button-focus);
        color: #fff;
    }

    &:hover {
        background-color: var(--bg-button-hover);
        color: #fff;
        text-decoration: none;
    }

    &:active {
        background-color: var(--bg-button-focus);
        border-color: var(--bg-border-focus);
        color: var(--primary);
    }

    &:disabled,
    &.disabled {
        /* For best results, do not use as <a> tag */
        background: var(--bg-secondary);
        color: var(--grey-colour);
        cursor: not-allowed;
        transition: border-color var(--btn-speed);

        img, span {
            filter: grayscale(1);
            opacity: 0.75;
        }

        &:active {
            border-color: var(--red);
            transition: none;
        }
    }

    /* Icons */
    img,
    svg {
        height: 24px;
        width: 24px;
        margin: auto;
        margin-right: 0.25em;
    }

    svg {
        height: 16px;
        width: 16px;
        margin-right: 0.5em;

        path {
            fill: var(--button-text);
        }
    }
}

.btn.ext {
    background-image: url(/assets/fa/external.svg);
    background-repeat: no-repeat;
    background-position: center right 10px;
    background-size: 1em;
    padding-right: 2em;
    filter: grayscale(1);

    &:active {
        filter: grayscale(0);
    }
}

/* Copy button for code blocks */
pre {
    position: relative;
    white-space: break-spaces;

    &.copied {
        animation: pre-block-copied 0.75s ease-in-out forwards;
        border-image-slice: 1;

        .copy-btn {
            background: var(--bg-colour);
            border-color: transparent;
        }
    }

    &:hover .copy-btn,
    &:focus .copy-btn {
        opacity: 1;
    }
}

.copy-btn {
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    position: absolute;
    top: 0;
    right: 0;
    opacity: 0;
    padding: 0.35em;
    margin: 0;

    &:hover,
    &:focus {
        background-color: var(--bg-button);
        color: #fff;
    }

    img {
        height: 1em;
        width: 1em;
        margin: auto;
    }
}

@keyframes pre-block-copied {
    0% {
        border-image: linear-gradient(315deg, var(--bg-colour), var(--bg-colour), var(--bg-colour), var(--bg-colour)) 1;
    }
    10% {
        border-image: linear-gradient(315deg, var(--secondary), var(--bg-colour), var(--bg-colour), var(--bg-colour)) 1;
    }
    20% {
        border-image: linear-gradient(315deg, var(--secondary), var(--secondary), var(--bg-colour), var(--bg-colour)) 1;
    }
    30% {
        border-image: linear-gradient(315deg, var(--secondary), var(--secondary), var(--secondary), var(--bg-colour)) 1;
    }
    40% {
        border-image: linear-gradient(315deg, var(--secondary), var(--secondary), var(--secondary), var(--secondary)) 1;
    }
    50% {
        border-color: var(--secondary);
    }
    100% {
        border-color: var(--bg-colour);
    }
}


/******************************
* Header
******************************/
.site-header {
    background-color: rgba(0,0,0,0.25);
    background-image: url(/assets/img/header.svg);
    background-size: contain;
    background-position: -350px center;
    backdrop-filter: blur(20px);
    box-shadow: 0px 1px 4px #000;
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: background-color var(--page-speed) ease-out;

    .site-inner {
        padding-top: 15px;
        padding-bottom: 15px;
    }
}

#mobile-menu-button,
#mobile-menu-toggle {
    display: none;
}

.site-header-content {
    display: flex;
    height: calc(var(--header-height) - 35px);
}

.site-title {
    text-decoration: none !important;
    margin: auto auto auto 0;
    transition: opacity var(--btn-speed) ease-in-out;

    * {
        vertical-align: middle;
    }

    span {
        font-size: 2em;
    }

    &:hover {
        color: var(--primary);
        opacity: 0.66;
    }

    &:active {
        color: white;
        opacity: 1;
        transition: none;

        img {
            filter: grayscale(1) contrast(2);
        }
    }
}

.site-nav {
    margin: auto;
    margin-right: 0;
}

/* Desktop */
@media (min-width: 721px) {
    .nav-menu {
        display: flex;
    }

    .nav-btn {
        color: var(--primary);
        margin: auto;

        &.active {
            color: white;
            font-weight: bold;
        }

        + .nav-btn {
            padding-left: 0.5em;
            margin-left: 0.5em;
            border-left: 2px solid var(--secondary);
        }
    }
}

/* Improve background */
@media (max-width: 920px) {
    .site-header {
        background-size: cover;
    }
}

/* Mobile */
@media (max-width: 720px) {
    html, body {
        min-width: 340px;
    }

    #mobile-menu-button {
        cursor: pointer;
        border: 1px solid transparent;
        border-bottom: none;
        display: block;
        position: fixed;
        top: 3.85em;
        right: 1.5em;
        padding: 0.5em;
        z-index: 10;

        svg {
            height: 1.5em;
            width: 1.5em;

            path {
                fill: var(--primary);
            }
        }
    }

    .nav-menu {
        position: fixed;
        top: calc(var(--header-height) - 20px);
        right: 1em;
        background: var(--bg-secondary);
        border: 1px solid var(--border-colour);
        padding: 1em;
        display: flex;
        flex-wrap: wrap;
        max-width: 15em;

        /* Initially & animation */
        opacity: 0;
        visibility: hidden;
        transform: scale(0);
        transform-origin: top right;
        transition: opacity var(--btn-speed) ease-in-out,
                    transform var(--btn-speed) ease-in-out,
                    visibility var(--btn-speed) ease-in-out;
    }

    .nav-btn {
        padding: 0.5em;
        width: 100%;

        &:hover,
        &:focus {
            color: var(--secondary);
            text-decoration: none;
        }

        &.active,
        &:active {
            color: white;
        }

        &.active {
            background: #222;
            margin: 0 -1em;
            padding: 0.5em 1.5em;
            width: calc(100% + 2em);
        }
    }

    #mobile-menu-toggle:checked {
        ~ .nav-menu {
            opacity: 1;
            visibility: visible;
            transform: scale(1);
        }

        ~ #mobile-menu-button {
            background: var(--bg-secondary);
            border-color: var(--border-colour);
        }
    }
}


/******************************
* Footer
******************************/
footer {
    border-top: 1px solid gray;
    padding: 1em 0;
    color: gray;
    font-size: 0.9em;
    margin-top: auto;
    background: #000;
    line-height: 18px;
    z-index: 5;

    .left {
        float: left;

        a {
            color: gray;
            text-decoration: dashed;
            text-decoration-line: underline;
        }
    }

    .right {
        float: right;
        position: relative;
        top: 0.6em;
    }

    .social-links {
        float: right;
        position: relative;
        top: 0.2em;
        margin-left: 0.5em;

        svg {
            width: 32px;
            height: 32px;
            padding: 0 0.15em;
            transition: opacity 0.2s;
            opacity: 1;

            path {
                fill: var(--primary);
            }
        }

        a {
            text-decoration: none;

            &:hover,
            &:focus {
                svg {
                    opacity: 0.75;
                }
            }
        }
    }
}

@media (max-width: 600px) {
    footer {
        &.left,
        &.right {
            text-align: center;
            padding: 0.5em 0;
            float: none;
            position: static;
        }

        .social-links {
            margin-top: 0.5em;
        }
    }
}

/* Sticky footer */
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}


/******************************
* Layout
******************************/
html, body {
    background: var(--bg-colour);
    color: var(--text-colour);
    margin: 0;
}

body {
    overflow-y: scroll;
}

main {
    padding-top: var(--header-height);
}

p {
    margin: 1em 0;
    line-height: 24px;
}

::selection {
    background-color: green;
    color: white;
}

.wrapper {
    max-width: calc(1200px - (30px * 2));
    margin-right: auto;
    margin-left: auto;
    padding-right: 30px;
    padding-left: 30px;
}

@media (max-width: 800px) {
    .wrapper {
        max-width: calc(800px - (30px));
        padding-right: 15px;
        padding-left: 15px;
    }
}

/* Clearfix */
.wrapper:after,
.footer-col-wrapper:after {
    content: "";
    display: table;
    clear: both;
}

article {
    margin: auto 0 4em 0;
}

.center {
    text-align: center;
}

.shrink {
    max-width: 600px;
    margin: auto;
}

.grey {
    color: grey;
}

.small {
    font-size: 0.875em;
}


/******************************
* Scroll Bar
******************************/
::-webkit-scrollbar {
    width: 18px;
    height: 18px;
    z-index: 100;
    background: black;
}

::-webkit-scrollbar-thumb {
    height: 6px;
    border: 4px solid rgba(0, 0, 0, 0);
    background-clip: padding-box;
    border-radius: 7px;
    background-color: rgba(255, 255, 255, 0.5);
    box-shadow: inset -1px -1px 0px rgba(0, 0, 0, 0.05), inset 1px 1px 0px rgba(0, 0, 0, 0.05);
    z-index: 100;
}

::-webkit-scrollbar-button {
    width: 0;
    height: 0;
    display: none;
    z-index: 100;
}

::-webkit-scrollbar-corner {
    background-color: transparent;
    z-index: 100;
}


/******************************
* Site Switcher
******************************/
.site-switcher {
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(20px);
    padding-top: 6px;

    .tab {
        background: transparent;
        border: 1px solid var(--border-colour);
        border-bottom: 1px solid var(--border-colour);
        border-bottom-color: transparent !important;
        color: var(--text-colour);
        display: inline-block;
        padding: 4px 8px;

        &:hover,
        &:focus {
            border-color: var(--tab-border-focus);
            text-decoration: none;
        }

        &:active {
            border-color: var(--tab-border-active);
        }

        &.active {
            background: var(--bg-secondary);
            color: var(--primary);
            border-color: var(--primary);
        }

        &.disabled {
            cursor: not-allowed;
            color: var(--grey-colour);
            opacity: 0.5;
        }
    }
}


/******************************
* Syntax Highlighting
******************************/
.language-diff {
    /* Insert */
    .gi {
        color: lime;
    }
    /* Delete */
    .gd {
        color: red;
    }
}

.language-json {
    /* "Parent" */
    .p {
        color: grey;
    }

    /* Key */
    .nl {
        color: aqua;
    }

    /* Value (string) */
    .s2 {
        color: lime;
    }

    /* Value (integer) */
    .mi {
        color: orange;
    }

    /* Value (boolean) */
    .kc {
        color: magenta;
    }
}

.language-ini {
    /* Workaround for .desktop files */
    .s + .err {
        /* Key */
        color: aqua !important;

        + .nn {
            color: orange;

            ~ .err {
                color: lime;
            }
        }
    }

    /* Key + Equals */
    .py,
    .p {
        color: aqua;
    }

    /* Value */
    .s {
        color: lime;
    }

    /* Group */
    .nn {
        color: darkgrey;
    }
}

.language-shell {
    .nb {
        color: white;
    }

    /* Comment */
    .c {
        color: var(--grey-colour-dark);
    }

    /* Parameter starting with dash */
    .nt {
        color: white;
    }
}


/******************************
* Tables
******************************/
table {
    width: 100%;
    border-spacing: 0;

    tr {
        background: var(--table-colour);

        &:nth-child(even) {
            background: var(--table-colour-alt);
        }
    }

    th,
    td {
        text-align: left;
        padding: 0.5em 1em;
        vertical-align: middle;
        border-left: 1px solid var(--table-colour);
    }

    th {
        background: var(--table-colour-head);
        color: var(--sidebar-heading);
        font-weight: 600;
    }

    tbody td {
        vertical-align: top;
    }

    &.has-icons tbody td {
        vertical-align: middle;
    }
}


/******************************
* Transitions
******************************/
html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

.transition-fade {
    transition: opacity var(--page-speed),
                transform var(--page-speed);
    opacity: 1;
}

html.is-animating .transition-fade {
    opacity: 0;
}