// =============================================================================
// Main Styles
// (c) Mathigon
// =============================================================================


@import "./styles/variables";
@import "./styles/normalise";
@import "./styles/forms";
@import "./styles/maths";

@import "@mathigon/boost/src/components/components";
@import "./components/progress/progress";
@import "./styles/header";
@import "./styles/footer";
@import "./styles/courses";


html {
  font-family: $fonts;
  cursor: default;
  background-color: $background;
  min-width: 320px;
  font-size: 18px;
  line-height: 1.6;
  touch-action: manipulation;
  &[theme="dark"] { background: $dark-mode; }
}

html:not(.ready) * { transition: none !important; animation: none !important; }
html:not(.is-tabbing) *:focus { outline: none !important; }
html.grabbing, html.grabbing * { cursor: grabbing !important; }

body { @include theme(color, $text-dark, rgba(white, 90%)); }

main {
  padding-top: 44px;
  html.webview & { padding-top: 0; }
}

.container {
  width: 1000px;
  max-width: calc(100% - 48px);
  margin: 0 auto;
  position: relative;
  &.narrow { width: 800px; }
  &.wide { width: 1200px; }
}
.panel.narrow { max-width: 800px; margin: 0 auto; }

// Fix display for MathJax SVG elements
svg.mathjax {
  display: inline-block;
  g, use, path { transform-origin: 0 0; transform-box: initial; }
}


// -----------------------------------------------------------------------------
// Conditional Classes

.is-mobile .only-desktop, .not-mobile .only-mobile, .not-touch .only-touch {
  display: none !important;
}

.xs-hide { @media screen and (max-width: 480px) { display: none !important; } }
.s-hide  { @media screen and (max-width: 640px) { display: none !important; } }
.l-hide  { @media screen and (min-width: 641px) { display: none !important; } }
.xl-hide { @media screen and (min-width: 801px) { display: none !important; } }

.invert { @include theme(filter, none, invert(1)); }


// -----------------------------------------------------------------------------
// Grids

.r { position: relative; }

.row, .column { display: flex; flex-wrap: wrap; justify-content: center; }
.column { flex-direction: column; }
.row.right { flex-direction: row-reverse; }

// TODO Use `gap: 24px` once supported by Safari: https://caniuse.com/flexbox-gap
.row.padded, .column.padded { margin: -24px; }
.row.padded > *, .column.padded > * { margin: 24px; }
.row.padded-thin, .column.padded-thin { margin: -12px; }
.row.padded-thin > *, .column.padded-thin > * { margin: 12px; }

.row .grow, .column .grow { flex-grow: 1; }
.row .shrink, .column .shrink { flex-shrink: 1; }

.row > * > h2:first-child, .row > * > h3:first-child { margin-top: 0; }
.padded > * > p:last-child, .padded-thin > * > p:last-child { margin-bottom: 0; }


// -----------------------------------------------------------------------------
// Typography

.text-medium { color: $text-medium; }

p a, label a, ul a, ol a, button.a { color: $blue; @include underline(3px, 1px); }

.caption { font-size: 80%; margin: 0 0 0.6em 0; text-align: left; color: #888; }

.emoji {
  font-size: inherit;
  margin: -4px 2px 0;
  display: inline-block;
  line-height: normal;
  vertical-align: middle;
  width: 20px;
  height: 20px;
}
img.emoji { width: auto; }

.tooltip {
  position: absolute;
  top: -22px;
  white-space: nowrap;
  left: 50%;
  transform: translateX(-50%);
  font-size: 14px;
  background: $dark-grey;
  backdrop-filter: blur(4px);
  opacity: 0;
  border-radius: 16px;
  pointer-events: none;
  padding: 2px 12px;
  transition: opacity .1s;
  color: white;
  border: 1px solid white;
  line-height: 18px;
  z-index: 9999;
  .not-mobile *:hover > &, .is-tabbing.not-mobile *:focus > & { opacity: 0.8; }
}


// -----------------------------------------------------------------------------
// Alerts and Warnings

.alert {
  padding: 12px 44px 12px 20px;
  border-radius: 4px;
  background: rgba($yellow, 40%);
  position: relative;
  margin-bottom: 2em;

  &.fail { background: rgba($red, 40%); }
  &.success { background: rgba($green, 40%); }
  p:last-child { margin: 0; }

  .close {
    position: absolute;
    top: 0;
    right: 0;
    font-weight: 700;
    padding: 0 13px;
    font-size: 30px;
    cursor: pointer;
    opacity: 0.6;
    &:hover { opacity: 1;}
  }
}

.warning {
  z-index: 900;
  display: block;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: $dark-grey url('/images/tiles.png');
  background-size: 240px 240px;
}

.warning-body {
  max-width: calc(100% - 48px);
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  svg { margin: 0 auto 20px; width: 100px; height: 100px; }
  p { color: white; background: $error; border-radius: 4px; padding: 8px 16px; text-align: center; }
  a:hover { color: lighten($blue, 10%); }
}

.cookie-warning {
  border-radius: 4px;
  background: darken($error, 5%);
  padding: 10px 16px 12px;
  box-sizing: border-box;
  position: fixed;
  left: 10px;
  bottom: 10px;
  color: white;
  z-index: 800;
  max-width: calc(100vw - 20px);
  box-shadow: 0 3px 6px rgba(black, 30%);
  line-height: 1.4;

  h2 { color: rgba(white, 80%); font-weight: 100; margin: 0 0 6px 0; font-size: 24px; }
  p { margin-bottom: 12px; }
  .btn { color: darken($error, 5%); }

  .close { cursor: pointer; top: 2px; right: 2px; position: absolute; padding: 12px; opacity: 0.6; transition: opacity .2s; }
  .close:hover { opacity: 1; }
  x-icon { display: block; }
}

x-modal#login {
  width: 500px;
  .modal-body { padding: 24px 16px 12px; }
  h2 { text-align: center; }

  .btn-row.social { display: flex; flex-wrap: wrap; justify-content: center; }
  .btn-row.social .btn { margin: 6px; }

  .hr { height: 1px; margin: 1em 8px; background: $light-grey; position: relative; }
  .hr span {
    background: white;
    display: block;
    left: 50%;
    position: absolute;
    text-align: center;
    margin-top: -7px;
    font-size: 14px;
    color: $text-light;
    line-height: 1;
    text-transform: uppercase;
    white-space: nowrap;
    padding: 0 12px;
    transform: translateX(-50%);
  }
}