//  Author: Rafal Bromirski
//  www: http://rafalbromirski.com/
//  github: http://github.com/rafalbromirski/sass-mediaqueries
//
//  Licensed under a MIT License
//
//  Version:
//  1.6.1

// --- generator ---------------------------------------------------------------

@mixin mq($args...) {
  $media-type: 'only screen';
  $media-type-key: 'media-type';
  $args: keywords($args);
  $expr: '';

  @if map-has-key($args, $media-type-key) {
    $media-type: map-get($args, $media-type-key);
    $args: map-remove($args, $media-type-key);
  }

  @each $key, $value in $args {
    @if $value {
      $expr: "#{$expr} and (#{$key}: #{$value})";
    }
  }

  @media #{$media-type} #{$expr} {
    @content;
  }
}

// --- screen ------------------------------------------------------------------

@mixin screen($min, $max, $orientation: false) {
  @include mq($min-width: $min, $max-width: $max, $orientation: $orientation) {
    @content;
  }
}

@mixin max-screen($max) {
  @include mq($max-width: $max) {
    @content;
  }
}

@mixin min-screen($min) {
  @include mq($min-width: $min) {
    @content;
  }
}

@mixin screen-height($min, $max, $orientation: false) {
  @include mq($min-height: $min, $max-height: $max, $orientation: $orientation) {
    @content;
  }
}

@mixin max-screen-height($max) {
  @include mq($max-height: $max) {
    @content;
  }
}

@mixin min-screen-height($min) {
  @include mq($min-height: $min) {
    @content;
  }
}

// --- hdpi --------------------------------------------------------------------

@mixin hdpi($ratio: 1.3) {
  @media only screen and (-webkit-min-device-pixel-ratio: $ratio),
  only screen and (min-resolution: #{round($ratio*96)}dpi) {
    @content;
  }
}

// --- hdtv --------------------------------------------------------------------

@mixin hdtv($standard: '1080') {
  $min-width: false;
  $min-height: false;

  $standards: ('720p', 1280px, 720px)
              ('1080', 1920px, 1080px)
              ('2K', 2048px, 1080px)
              ('4K', 4096px, 2160px);

  @each $s in $standards {
    @if $standard == nth($s, 1) {
      $min-width: nth($s, 2);
      $min-height: nth($s, 3);
    }
  }

  @include mq(
    $min-device-width: $min-width,
    $min-device-height: $min-height,
    $min-width: $min-width,
    $min-height: $min-height
  ) {
    @content;
  }
}

// --- iphone4 -----------------------------------------------------------------

@mixin iphone4($orientation: false) {
  $min: 320px;
  $max: 480px;
  $pixel-ratio: 2;
  $aspect-ratio: '2/3';

  @include mq(
    $min-device-width: $min,
    $max-device-width: $max,
    $orientation: $orientation,
    $device-aspect-ratio: $aspect-ratio,
    $-webkit-device-pixel-ratio: $pixel-ratio
  ) {
    @content;
  }
}

// --- iphone5 -----------------------------------------------------------------

@mixin iphone5($orientation: false) {
  $min: 320px;
  $max: 568px;
  $pixel-ratio: 2;
  $aspect-ratio: '40/71';

  @include mq(
    $min-device-width: $min,
    $max-device-width: $max,
    $orientation: $orientation,
    $device-aspect-ratio: $aspect-ratio,
    $-webkit-device-pixel-ratio: $pixel-ratio
  ) {
    @content;
  }
}

// --- iphone6 -----------------------------------------------------------------

@mixin iphone6($orientation: false) {
  $min: 375px;
  $max: 667px;
  $pixel-ratio: 2;

  @include mq(
    $min-device-width: $min,
    $max-device-width: $max,
    $orientation: $orientation,
    $-webkit-device-pixel-ratio: $pixel-ratio
  ) {
    @content;
  }
}

// --- iphone6 plus ------------------------------------------------------------

@mixin iphone6-plus($orientation: false) {
  $min: 414px;
  $max: 736px;
  $pixel-ratio: 3;

  @include mq(
    $min-device-width: $min,
    $max-device-width: $max,
    $orientation: $orientation,
    $-webkit-device-pixel-ratio: $pixel-ratio
  ) {
    @content;
  }
}

// --- ipad (all) --------------------------------------------------------------

@mixin ipad($orientation: false) {
  $min: 768px;
  $max: 1024px;

  @include mq(
    $min-device-width: $min,
    $max-device-width: $max,
    $orientation: $orientation
  ) {
    @content;
  }
}

// --- ipad-retina -------------------------------------------------------------

@mixin ipad-retina($orientation: false) {
  $min: 768px;
  $max: 1024px;
  $pixel-ratio: 2;

  @include mq(
    $min-device-width: $min,
    $max-device-width: $max,
    $orientation: $orientation,
    $-webkit-device-pixel-ratio: $pixel-ratio
  ) {
    @content;
  }
}

// --- orientation -------------------------------------------------------------

@mixin landscape() {
  @include mq($orientation: landscape) {
    @content;
  }
}

@mixin portrait() {
  @include mq($orientation: portrait) {
    @content;
  }
}