@use 'sass:math';
@use 'sass:color';

$breakpoint-width: 700px !default;

@mixin on-small-screen() {
  @media (max-width: ($breakpoint-width - 1px)) {
    @content;
  }
}

@mixin on-large-screen() {
  @media (min-width: $breakpoint-width) {
    @content;
  }
}

@mixin title-fragment-link() {
  position: relative;

  &:before {
    content: '#';
    position: absolute;
    left: -0.5ch;
    top: 50%;
    opacity: 0;
    transform: translateX(-100%) translateY(-50%);
    transition: opacity var(--transition-time);
  }

  &:hover:before {
    opacity: 0.5;
  }
}

@mixin image-button($background-image, $background-color) {
  @include square(var(--icon-size));
  border: none;
  cursor: pointer;

  background-color: $background-color;
  mask-image: $background-image;
  -webkit-mask-image: $background-image;
  mask-repeat: no-repeat;

  transition: transform var(--transition-time), background-color var(--transition-time);
  &:hover {
    transform: scale(1.15);
  }
}

@mixin center-children() {
  display: flex;
  align-items: center;
  justify-content: center;
}

@mixin absolute-center() {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translateX(-50%) translateY(-50%);
}

@mixin blurred-background($color: transparent) {
  background-color: color.adjust($color, $alpha: -0.66);
  backdrop-filter: blur(var(--blur-radius));
  -webkit-backdrop-filter: blur(var(--blur-radius));

  @supports not (
    (backdrop-filter: blur(var(--blur-radius))) or
      (-webkit-backdrop-filter: blur(var(--blur-radius)))
  ) {
    background-color: $color;
  }
}

@mixin square($size) {
  width: $size;
  height: $size;
}

@mixin title-font() {
  font: 400 3rem 'Comfortaa', sans-serif;
  color: var(--normal-text-color);
  line-height: 1;

  @include on-small-screen {
    font-size: 3rem;
    line-height: 1.1;
  }
}

@mixin sub-title-font() {
  font: 400 1.75rem 'Comfortaa', sans-serif;
  color: var(--normal-text-color);
  hyphens: auto;
}

@mixin main-font() {
  font: 400 1.1rem 'Open Sans', sans-serif;
  color: var(--normal-text-color);
  line-height: 1.8;
  hyphens: auto;
}

@mixin special-text-font() {
  font: 400 1rem 'Open Sans', sans-serif;
  color: var(--special-text-color);
  hyphens: auto;
  font-style: italic;
}

@mixin link {
  $border-shift: 10px;
  $line-width: 2px;

  @include special-text-font();
  cursor: pointer;
  position: relative;
  display: inline-block;
  overflow: hidden;

  padding: 0 3px $line-width 0;

  &:before,
  &:after {
    content: '';
    display: block;
    position: absolute;
    bottom: 0;
  }

  &:before {
    width: calc(100% + #{$border-shift});
    border-bottom: $line-width dashed var(--accent-color);
    transition: transform var(--transition-time);
  }

  &:after {
    width: 100%;
    height: $line-width;
    background: linear-gradient(
      90deg,
      var(--card-color) 0,
      transparent 4px,
      transparent calc(100% - 4px),
      var(--card-color) 100%
    );
  }

  &:hover:before {
    transform: translateX(-$border-shift);
  }
}