// Font imports:

@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,700);
@import url(http://fonts.googleapis.com/css?family=Ubuntu+Mono:400,400italic,700,700italic);
@import url(http://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css);
@import url(http://fonts.googleapis.com/css?family=Raleway:200);

// Less variables

@base-font-size: 16px;
@vspacing: @base-font-size*2;

@monospace-font-stack: ~"'Ubuntu Mono', 'Menlo', monospace";
@body-font-stack: ~"'ProximaNova', 'Source Sans Pro', 'Helvetica Neue', 'Arial', sans-serif";
@heading-font-stack: ~"'ProximaNova', 'Source Sans Pro', 'Helvetica Neue', 'Arial', sans-serif";
@special-font-stack-1: ~"'Raleway', 'Helvetica Neue', 'Arial', sans-serif";

@black: #333;
@gray: #b7b7b7;
@accent: #21bB5b; // green
@black-background: #012029;
@white: #fefefe;
@milk: #fefefe;

@transition-speed-1: .1s;
@transition-speed-2: .25s;
@in-sine: cubic-bezier(0.47, 0, 0.75, 0.72);

// Utils and prefixing

@import 'flexbox-prefixes';

.heading(@font-size: 18px) {
    font-size: @font-size;
    font-family: @heading-font-stack;
    letter-spacing: -0.005rem;
    text-transform: uppercase;
    font-weight: 700;
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    font-smoothing: antialiased;
    color: @black;
}

.transition (@transition) {
    -webkit-transition: @transition;
    -moz-transition:    @transition;
    -ms-transition:     @transition;
    -o-transition:      @transition;
}

.user-select(@user-select) {
    -webkit-user-select: @user-select;
    -moz-user-select: @user-select;
    -ms-user-select: @user-select;
    user-select: @user-select;
}

.meta() {
    font-size: 14px;
    color: @gray;
}


// Slap-on utils

.dark {
    color: @black !important;
}

.light {
    color: @gray !important;
}

.accent {
    color: @accent !important;
}

// General styles

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

a, a:visited, a:focus, a:active {
    text-decoration: none;
}

html {
    height: 100%;
    font-size: @base-font-size;
}

body {
    .flex-display();
    .flex-direction(column); // vertically stack sections
    .align-items(center); // horizontally center all sections
    .justify-content(flex-start); // start sections at the top
    width: 100%;
    min-height: 100%;
    font-weight: 400;
    font-family: @body-font-stack;
    color: @black;
    line-height: 1.6;
    text-rendering: optimizeLegibility !important;
    // TODO: Uncomment when moz supports at subpixel level
    // -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: subpixel-antialiased;
    font-smoothing: subpixel-antialiased;
}

@media (min-width: 550px) {
    body {
        .justify-content(center); // vertically center all sections 
    }
}

// Ionicon classes

.icon {
    // INFO: Comment out if you see performance issues, especially on mobile
    text-rendering: geometricPrecision !important;
}

// * Sections – the cornerstone of page elements
// * Container – contains section contents
// 
// Both classes are flex elements 

.section {
    .flex-display();
    // Sections position their containers centrally, with spacing to the sides
    // The containers can then move their children around as needed.
    .justify-content(center);
    .align-items(center);
    width: 100%;
}

.container {
    .flex-display();
    width: 100%;
}

@media (min-width: 550px) {
    .section {
        padding: 0 20px;
        margin-left: 100px;
        margin-right: 100px;
        max-width: 900px;
    }
}

// Sections order

.section.header {
    .flex-order(0);
}
.section.icons {
    .flex-order(1);
}
.section.main {
    .flex-order(2);
}

@media (min-width: 550px) {
    .section.header {
        .flex-order(0);
    }
    .section.icons {
        .flex-order(2);
    }
    .section.main {
        .flex-order(1);
    }
}

// Styles for sections and contents
// Header section

.section.header {
    background-color: @black-background;

    .container {
        .align-items(center);
        .justify-content(center);
    }

    .content {
        .flex-display();
        .flex-direction(column);
        .align-items(center);
    }

    .name {
        .heading();
        color: @white;
    }

    nav {
        font-size: 14px;
        margin-bottom: floor(@vspacing/2);
        // font-weight: 600;

        ul {
            list-style: none;
            text-align: center;
            .flex-display(inline-flex);
        }
        
        ul a {
            margin-right: 12px;
            
            &:last-child {
                margin-right: 0;
            }
        }

        ul li {
            color: @milk;
            .transition(~'color @{transition-speed-1} @{in-sine}');

            &:hover {
                color: @white
            }
        }
    }
}

@media (min-width: 550px) {
    .section.header {
        background-color: transparent;

        .container {
            .justify-content(flex-start);
        }

        .content {
            .align-items(flex-start);
        }

        .name {
            color: @black;
        }

        nav {
            margin-bottom: 0;

            ul {
                text-align: left;
            }

            ul li {
                color: @gray;

                &:hover {
                    color: @black;
                }
            }
        }
    }
}

// Icons

.section.icons {
    background-color: @black-background;

    .container {
        .align-items(center);
        .justify-content(center);
    }

    .content {
        a {
            margin-right: 6px;
            color: @milk;
            .transition(~'color @{transition-speed-1} @{in-sine}');

            &:last-child {
                margin-right: 0;
            }

            &:hover {
                color: @white;
            }

            .icon {
                font-size: 18px;

                &.larger {
                    font-size: 20px;
                }
            }
        }
    }
}

@media (min-width: 550px) {
    .section.icons {
        background-color: transparent;

        .container {
            .justify-content(flex-start);
        }

        .content {
            a { 
                margin-right: 4px;
                color: @gray;

                &:hover {
                    color: @black;
                }

                .icon {
                    font-size: 16px;

                    &.larger {
                        font-size: 18px;
                    }
                }
            }

        }
    }
}

// Main section

.section.main {
    .container {
        .align-items(center);
        .justify-content(flex-start);        
    }
    
    .content {
        color: @black;
        font-size: 16px;

        .page-heading {
            .heading();
            margin-bottom: floor(@vspacing/2);
        }

        .front-matter {
            .page-heading {
                margin-bottom: 0;
            }

            .meta {
                .meta();
                .flex-display();
                margin-bottom: @vspacing;
            }

            .date, .word-count, .reading-time .middot {
                display: none;
            }

            .middot {
                font-size: 6px;
                margin: 0 6px;
                display: inline;
                vertical-align: middle;

                &:before {
                    content: "•";
                }
            }
        }
    }
}

@media (min-width: 550px) {
    .section.main {
        .content {
            .front-matter {
                .date, .word-count, .reading-time .middot {
                    display: initial;
                }
            }
        }
    }
}

// 404 page

.section.main {
    .container.f04 {
        .justify-content(center);
        
        .content {
            .flex-display();
            .flex-direction(column);
            .align-items(center);

            .num {
                margin: 30px 0px 30px 0;
                font-weight: 200;
                font-family: @special-font-stack-1;
                font-size: 50px;
            }

            .detail {
                margin-bottom: 40px;
            }
        }
    }
}

@media (min-width: 550px) {
    .section.main {
        .container.f04 {
            .justify-content(flex-start);
            
            .content {
                .align-items(flex-start);

                .num {
                    margin: 0 0 10px 0;
                    font-size: 32px;
                }

                .detail {
                    margin-bottom: 30px;
                }
            }
        }
    }
}

// Post item

.section.main {
    .container {
        .content {
            .post-item {
                .flex-display();
                .align-items(center);
                list-style: none;

                .meta {
                    .meta();
                    min-width: 100px;
                    text-align: right;
                    margin-right: 20px;
                }
            }
        }
    }
}

// Spacing

.section {
    padding: 0 20px;
}

.section.header {
    padding-top: @vspacing;
    padding-bottom: floor(@vspacing/2);
}

.section.icons {
    padding-top: 0;
    padding-bottom: @vspacing;
}

.section.main {
    padding-top: @vspacing;
    padding-bottom: @vspacing;
}

@media (min-width: 550px) {
    @vspacing: 60px;
    
    .container {
        margin: 0 20px;
    }

    .section.header {
        padding-top: @vspacing;
        padding-bottom: @vspacing;
    } 

    .section.icons {
        padding-top: @vspacing;
        padding-bottom: @vspacing;
    }

    .section.main {
        padding-top: 0;
        padding-bottom: 0;
    }

    .section.main.post {
        padding-top: @vspacing;
        padding-bottom: @vspacing;
    }
}

a {
    color: @accent;
}

@import 'markdown';