diff --git a/front/package.json b/front/package.json
index 66ff72d9ceabe4500f0a74a44863fbe16cee343d..c39805d4f5a78331322c0d460ba62950f637957b 100644
--- a/front/package.json
+++ b/front/package.json
@@ -28,7 +28,8 @@
     "vue-upload-component": "^2.7.4",
     "vuedraggable": "^2.14.1",
     "vuex": "^3.0.1",
-    "vuex-persistedstate": "^2.4.2"
+    "vuex-persistedstate": "^2.4.2",
+    "vuex-router-sync": "^5.0.0"
   },
   "devDependencies": {
     "autoprefixer": "^6.7.2",
diff --git a/front/src/App.vue b/front/src/App.vue
index d1d63e65143df782703d035a14c8ca0f21da78e1..d310c3ca9d2ab2183337b35ea9321509dec0081c 100644
--- a/front/src/App.vue
+++ b/front/src/App.vue
@@ -40,6 +40,7 @@ export default {
 // and we end up with CSS rules not applied,
 // see https://github.com/webpack/webpack/issues/215
 @import 'semantic/semantic.css';
+@import 'style/vendor/media';
 
 
 #app {
@@ -48,17 +49,19 @@ export default {
   -moz-osx-font-smoothing: grayscale;
 }
 .main.pusher, .footer {
-  margin-left: 350px !important;
+  @include media(">desktop") {
+    margin-left: 350px !important;
+  }
   transform: none !important;
 }
 .main-pusher {
   padding: 1.5rem 0;
 }
-#footer {
-  padding: 4em;
-}
-.ui.stripe.segment {
-  padding: 4em;
+.ui.stripe.segment, #footer {
+  padding: 2em;
+  @include media(">tablet") {
+    padding: 4em;
+  }
 }
 
 .ui.small.text.container {
diff --git a/front/src/components/Sidebar.vue b/front/src/components/Sidebar.vue
index a315aab199c341a24db3baed09cdad32a813975b..6aaf04c42a0dd2ed0e7803f924e8adca719fe302 100644
--- a/front/src/components/Sidebar.vue
+++ b/front/src/components/Sidebar.vue
@@ -1,13 +1,17 @@
 <template>
-<div class="ui vertical left visible wide sidebar">
+<div :class="['ui', 'vertical', 'left', 'visible', 'wide', {'collapsed': isCollapsed}, 'sidebar',]">
   <div class="ui inverted segment header-wrapper">
-    <search-bar>
+    <search-bar @search="isCollapsed = false">
       <router-link :title="'Funkwhale'" :to="{name: 'index'}">
         <i class="logo bordered inverted orange big icon">
           <logo class="logo"></logo>
         </i>
       </router-link>
-
+      <span
+        slot="after"
+        @click="isCollapsed = !isCollapsed"
+        :class="['ui', 'basic', 'big', {'inverted': isCollapsed}, 'orange', 'icon', 'collapse', 'button']">
+          <i class="sidebar icon"></i></span>
     </search-bar>
   </div>
 
@@ -49,7 +53,7 @@
       </div>
     </div>
     <div class="ui bottom attached tab" data-tab="queue">
-      <table class="ui compact inverted very basic fixed single line table">
+      <table class="ui compact inverted very basic fixed single line unstackable table">
         <draggable v-model="queue.tracks" element="tbody" @update="reorder">
           <tr @click="$store.dispatch('queue/currentIndex', index)" v-for="(track, index) in queue.tracks" :key="index" :class="[{'active': index === queue.currentIndex}]">
               <td class="right aligned">{{ index + 1}}</td>
@@ -111,7 +115,8 @@ export default {
   },
   data () {
     return {
-      backend: backend
+      backend: backend,
+      isCollapsed: true
     }
   },
   mounted () {
@@ -119,7 +124,8 @@ export default {
   },
   computed: {
     ...mapState({
-      queue: state => state.queue
+      queue: state => state.queue,
+      url: state => state.route.path
     })
   },
   methods: {
@@ -129,19 +135,41 @@ export default {
     reorder: function (oldValue, newValue) {
       this.$store.commit('queue/reorder', {oldValue, newValue})
     }
+  },
+  watch: {
+    url: function () {
+      this.isCollapsed = true
+    }
   }
 }
 </script>
 
 <!-- Add "scoped" attribute to limit CSS to this component only -->
 <style scoped lang="scss">
+@import '../style/vendor/media';
 
 $sidebar-color: #1B1C1D;
 
 .sidebar {
-  display:flex;
-  flex-direction:column;
-  justify-content: space-between;
+  @include media(">tablet") {
+    display:flex;
+    flex-direction:column;
+    justify-content: space-between;
+  }
+  @include media(">desktop") {
+    .collapse.button {
+      display: none;
+    }
+  }
+  @include media("<desktop") {
+    position: static !important;
+    width: 100% !important;
+    &.collapsed {
+      .menu-area, .player-wrapper, .tabs {
+        display: none;
+      }
+    }
+  }
 
   > div {
     margin: 0;
@@ -160,7 +188,12 @@ $sidebar-color: #1B1C1D;
 }
 .tabs {
   overflow-y: auto;
-  height: 0px;
+  @include media(">tablet") {
+    height: 0px;
+  }
+  @include media("<desktop") {
+    max-height: 400px;
+  }
 }
 .tab[data-tab="queue"] {
   tr {
@@ -174,7 +207,6 @@ $sidebar-color: #1B1C1D;
 
 .ui.inverted.segment.header-wrapper {
   padding: 0;
-  padding-bottom: 1rem;
 }
 .tabs {
   flex: 1;
@@ -191,9 +223,14 @@ $sidebar-color: #1B1C1D;
 }
 
 .ui.search {
-  display: inline-block;
+  display: block;
   > a {
     margin-right: 1.5rem;
   }
+  .collapse.button {
+    margin-right: 0.5rem;
+    margin-top: 0.5rem;
+    float: right;
+  }
 }
 </style>
diff --git a/front/src/components/audio/Player.vue b/front/src/components/audio/Player.vue
index 500f4dc1d2b09e26cf036b871f842ca608b81d3b..9388c2682914f5d3b0623c01eccee202c61d58e3 100644
--- a/front/src/components/audio/Player.vue
+++ b/front/src/components/audio/Player.vue
@@ -10,7 +10,7 @@
       :track="currentTrack">
     </audio-track>
 
-    <div v-if="currentTrack" class="track-area ui items">
+    <div v-if="currentTrack" class="track-area ui unstackable items">
       <div class="ui inverted item">
         <div class="ui tiny image">
           <img v-if="currentTrack.album.cover" :src="Track.getCover(currentTrack)">
diff --git a/front/src/components/audio/SearchBar.vue b/front/src/components/audio/SearchBar.vue
index 9d8b39f870cac19021fc56d9df3368d8f05f6ddf..56a8e77be1f1719b66c1c72cc3d1e07d45a71853 100644
--- a/front/src/components/audio/SearchBar.vue
+++ b/front/src/components/audio/SearchBar.vue
@@ -6,6 +6,7 @@
       <i class="search icon"></i>
     </div>
     <div class="results"></div>
+    <slot name="after"></slot>
   </div>
 </template>
 
@@ -25,6 +26,9 @@ export default {
       onSelect (result, response) {
         router.push(result.routerUrl)
       },
+      onSearchQuery (query) {
+        self.$emit('search')
+      },
       apiSettings: {
         beforeXHR: function (xhrObject) {
           xhrObject.setRequestHeader('Authorization', self.$store.getters['auth/header'])
diff --git a/front/src/components/audio/album/Card.vue b/front/src/components/audio/album/Card.vue
index 4c803b29cc704fbc7e05258bfe595ee9b6908d99..968b828a49df356baf3ab104edc6e7fa5c811bc5 100644
--- a/front/src/components/audio/album/Card.vue
+++ b/front/src/components/audio/album/Card.vue
@@ -14,7 +14,7 @@
           </router-link>
         </div>
         <div class="description" v-if="mode === 'rich'">
-          <table class="ui very basic fixed single line compact table">
+          <table class="ui very basic fixed single line compact unstackable table">
             <tbody>
               <tr v-for="track in tracks">
                 <td>
diff --git a/front/src/components/audio/artist/Card.vue b/front/src/components/audio/artist/Card.vue
index 8a02163fbb17258badb78fe6f4d133e5096f6749..9a82d6c8f315e09ab6d6ce2fb08c491ec31183e9 100644
--- a/front/src/components/audio/artist/Card.vue
+++ b/front/src/components/audio/artist/Card.vue
@@ -7,7 +7,7 @@
           </router-link>
         </div>
         <div class="description">
-          <table class="ui compact very basic fixed single line table">
+          <table class="ui compact very basic fixed single line unstackable table">
             <tbody>
               <tr v-for="album in albums">
                 <td>
diff --git a/front/src/components/audio/track/Table.vue b/front/src/components/audio/track/Table.vue
index 8a591d3bd05e9542484a2b8bf8ef9b931363a837..00bcf9f7de239ab6f54f1925d7550760aba95c23 100644
--- a/front/src/components/audio/track/Table.vue
+++ b/front/src/components/audio/track/Table.vue
@@ -1,5 +1,5 @@
 <template>
-  <table class="ui compact very basic fixed single line table">
+  <table class="ui compact very basic fixed single line unstackable table">
     <thead>
       <tr>
         <th></th>
diff --git a/front/src/components/library/Library.vue b/front/src/components/library/Library.vue
index c27313dc36d2a9d08c0cbba2c0e704c7527c5063..5fe192022c8e34416259118f262fb87076e98458 100644
--- a/front/src/components/library/Library.vue
+++ b/front/src/components/library/Library.vue
@@ -22,8 +22,12 @@ export default {
 
 <!-- Add "scoped" attribute to limit CSS to this component only -->
 <style lang="scss">
+@import '../../style/vendor/media';
+
 .library.pusher > .ui.secondary.menu {
-  margin: 0 2.5rem;
+  @include media(">tablet") {
+    margin: 0 2.5rem;
+  }
   .item {
     padding-top: 1.5em;
     padding-bottom: 1.5em;
@@ -37,7 +41,10 @@ export default {
     padding: 0;
     .segment-content {
       margin: 0 auto;
-      padding: 4em;
+      padding: 2em;
+      @include media(">tablet") {
+        padding: 4em;
+      }
     }
     &.with-background {
       .header {
diff --git a/front/src/components/library/import/BatchDetail.vue b/front/src/components/library/import/BatchDetail.vue
index 621078b1503e870585a8f32af0f9a6363cdaf31c..417fd55c2bc6f208208bfb16963d6b1d4d6f5d44 100644
--- a/front/src/components/library/import/BatchDetail.vue
+++ b/front/src/components/library/import/BatchDetail.vue
@@ -17,7 +17,7 @@
         <div v-if="batch.status === 'pending'" class="label">Importing {{ batch.jobs.length }} tracks...</div>
         <div v-if="batch.status === 'finished'" class="label">Imported {{ batch.jobs.length }} tracks!</div>
       </div>
-      <table class="ui table">
+      <table class="ui unstackable table">
         <thead>
           <tr>
             <th>Job ID</th>
diff --git a/front/src/components/library/import/BatchList.vue b/front/src/components/library/import/BatchList.vue
index 8133d8e212ebdfe09ead0ecf6d3d56c97c2f455f..de4fef554c5c4699ec1d501dbcbc471dc28d2379 100644
--- a/front/src/components/library/import/BatchList.vue
+++ b/front/src/components/library/import/BatchList.vue
@@ -12,7 +12,7 @@
         :disabled="!nextLink">Next <i class="right arrow icon"></i></button>
       <div class="ui hidden clearing divider"></div>
       <div class="ui hidden clearing divider"></div>
-      <table v-if="results.length > 0" class="ui table">
+      <table v-if="results.length > 0" class="ui unstackable table">
         <thead>
           <tr>
             <th>ID</th>
diff --git a/front/src/main.js b/front/src/main.js
index da6a0844230e08d99a4854bf91c6c37adaa09bf0..d1ff90c3256846b65848021e1abf0f0b3fb19bc7 100644
--- a/front/src/main.js
+++ b/front/src/main.js
@@ -12,6 +12,9 @@ import axios from 'axios'
 import VueLazyload from 'vue-lazyload'
 import store from './store'
 import config from './config'
+import { sync } from 'vuex-router-sync'
+
+sync(store, router)
 
 window.$ = window.jQuery = require('jquery')
 
diff --git a/front/src/style/vendor/_media.scss b/front/src/style/vendor/_media.scss
new file mode 100644
index 0000000000000000000000000000000000000000..2328eff8cf577a82454de1d2fcb175bf60a1404d
--- /dev/null
+++ b/front/src/style/vendor/_media.scss
@@ -0,0 +1,567 @@
+@charset "UTF-8";
+
+//     _            _           _                           _ _
+//    (_)          | |         | |                         | (_)
+//     _ _ __   ___| |_   _  __| | ___   _ __ ___   ___  __| |_  __ _
+//    | | '_ \ / __| | | | |/ _` |/ _ \ | '_ ` _ \ / _ \/ _` | |/ _` |
+//    | | | | | (__| | |_| | (_| |  __/ | | | | | |  __/ (_| | | (_| |
+//    |_|_| |_|\___|_|\__,_|\__,_|\___| |_| |_| |_|\___|\__,_|_|\__,_|
+//
+//      Simple, elegant and maintainable media queries in Sass
+//                        v1.4.9
+//
+//                http://include-media.com
+//
+//         Authors: Eduardo Boucas (@eduardoboucas)
+//                  Hugo Giraudel (@hugogiraudel)
+//
+//      This project is licensed under the terms of the MIT license
+
+
+////
+/// include-media library public configuration
+/// @author Eduardo Boucas
+/// @access public
+////
+
+
+///
+/// Creates a list of global breakpoints
+///
+/// @example scss - Creates a single breakpoint with the label `phone`
+///  $breakpoints: ('phone': 320px);
+///
+$breakpoints: (
+  'phone': 320px,
+  'tablet': 768px,
+  'desktop': 1024px
+) !default;
+
+
+///
+/// Creates a list of static expressions or media types
+///
+/// @example scss - Creates a single media type (screen)
+///  $media-expressions: ('screen': 'screen');
+///
+/// @example scss - Creates a static expression with logical disjunction (OR operator)
+///  $media-expressions: (
+///    'retina2x': '(-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi)'
+///  );
+///
+$media-expressions: (
+  'screen': 'screen',
+  'print': 'print',
+  'handheld': 'handheld',
+  'landscape': '(orientation: landscape)',
+  'portrait': '(orientation: portrait)',
+  'retina2x': '(-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi), (min-resolution: 2dppx)',
+  'retina3x': '(-webkit-min-device-pixel-ratio: 3), (min-resolution: 350dpi), (min-resolution: 3dppx)'
+) !default;
+
+
+///
+/// Defines a number to be added or subtracted from each unit when declaring breakpoints with exclusive intervals
+///
+/// @example scss - Interval for pixels is defined as `1` by default
+///  @include media('>128px') {}
+///
+///  /* Generates: */
+///  @media (min-width: 129px) {}
+///
+/// @example scss - Interval for ems is defined as `0.01` by default
+///  @include media('>20em') {}
+///
+///  /* Generates: */
+///  @media (min-width: 20.01em) {}
+///
+/// @example scss - Interval for rems is defined as `0.1` by default, to be used with `font-size: 62.5%;`
+///  @include media('>2.0rem') {}
+///
+///  /* Generates: */
+///  @media (min-width: 2.1rem) {}
+///
+$unit-intervals: (
+  'px': 1,
+  'em': 0.01,
+  'rem': 0.1,
+  '': 0
+) !default;
+
+///
+/// Defines whether support for media queries is available, useful for creating separate stylesheets
+/// for browsers that don't support media queries.
+///
+/// @example scss - Disables support for media queries
+///  $im-media-support: false;
+///  @include media('>=tablet') {
+///    .foo {
+///      color: tomato;
+///    }
+///  }
+///
+///  /* Generates: */
+///  .foo {
+///    color: tomato;
+///  }
+///
+$im-media-support: true !default;
+
+///
+/// Selects which breakpoint to emulate when support for media queries is disabled. Media queries that start at or
+/// intercept the breakpoint will be displayed, any others will be ignored.
+///
+/// @example scss - This media query will show because it intercepts the static breakpoint
+///  $im-media-support: false;
+///  $im-no-media-breakpoint: 'desktop';
+///  @include media('>=tablet') {
+///    .foo {
+///      color: tomato;
+///    }
+///  }
+///
+///  /* Generates: */
+///  .foo {
+///    color: tomato;
+///  }
+///
+/// @example scss - This media query will NOT show because it does not intercept the desktop breakpoint
+///  $im-media-support: false;
+///  $im-no-media-breakpoint: 'tablet';
+///  @include media('>=desktop') {
+///    .foo {
+///      color: tomato;
+///    }
+///  }
+///
+///  /* No output */
+///
+$im-no-media-breakpoint: 'desktop' !default;
+
+///
+/// Selects which media expressions are allowed in an expression for it to be used when media queries
+/// are not supported.
+///
+/// @example scss - This media query will show because it intercepts the static breakpoint and contains only accepted media expressions
+///  $im-media-support: false;
+///  $im-no-media-breakpoint: 'desktop';
+///  $im-no-media-expressions: ('screen');
+///  @include media('>=tablet', 'screen') {
+///    .foo {
+///      color: tomato;
+///    }
+///  }
+///
+///   /* Generates: */
+///   .foo {
+///     color: tomato;
+///   }
+///
+/// @example scss - This media query will NOT show because it intercepts the static breakpoint but contains a media expression that is not accepted
+///  $im-media-support: false;
+///  $im-no-media-breakpoint: 'desktop';
+///  $im-no-media-expressions: ('screen');
+///  @include media('>=tablet', 'retina2x') {
+///    .foo {
+///      color: tomato;
+///    }
+///  }
+///
+///  /* No output */
+///
+$im-no-media-expressions: ('screen', 'portrait', 'landscape') !default;
+
+////
+/// Cross-engine logging engine
+/// @author Hugo Giraudel
+/// @access private
+////
+
+
+///
+/// Log a message either with `@error` if supported
+/// else with `@warn`, using `feature-exists('at-error')`
+/// to detect support.
+///
+/// @param {String} $message - Message to log
+///
+@function im-log($message) {
+  @if feature-exists('at-error') {
+    @error $message;
+  } @else {
+    @warn $message;
+    $_: noop();
+  }
+
+  @return $message;
+}
+
+
+///
+/// Wrapper mixin for the log function so it can be used with a more friendly
+/// API than `@if im-log('..') {}` or `$_: im-log('..')`. Basically, use the function
+/// within functions because it is not possible to include a mixin in a function
+/// and use the mixin everywhere else because it's much more elegant.
+///
+/// @param {String} $message - Message to log
+///
+@mixin log($message) {
+  @if im-log($message) {}
+}
+
+
+///
+/// Function with no `@return` called next to `@warn` in Sass 3.3
+/// to trigger a compiling error and stop the process.
+///
+@function noop() {}
+
+///
+/// Determines whether a list of conditions is intercepted by the static breakpoint.
+///
+/// @param {Arglist}   $conditions  - Media query conditions
+///
+/// @return {Boolean} - Returns true if the conditions are intercepted by the static breakpoint
+///
+@function im-intercepts-static-breakpoint($conditions...) {
+  $no-media-breakpoint-value: map-get($breakpoints, $im-no-media-breakpoint);
+
+  @if not $no-media-breakpoint-value {
+    @if im-log('`#{$im-no-media-breakpoint}` is not a valid breakpoint.') {}
+  }
+
+  @each $condition in $conditions {
+    @if not map-has-key($media-expressions, $condition) {
+      $operator: get-expression-operator($condition);
+      $prefix: get-expression-prefix($operator);
+      $value: get-expression-value($condition, $operator);
+
+      @if ($prefix == 'max' and $value <= $no-media-breakpoint-value) or
+          ($prefix == 'min' and $value > $no-media-breakpoint-value) {
+        @return false;
+      }
+    } @else if not index($im-no-media-expressions, $condition) {
+      @return false;
+    }
+  }
+
+  @return true;
+}
+
+////
+/// Parsing engine
+/// @author Hugo Giraudel
+/// @access private
+////
+
+
+///
+/// Get operator of an expression
+///
+/// @param {String} $expression - Expression to extract operator from
+///
+/// @return {String} - Any of `>=`, `>`, `<=`, `<`, `≥`, `≤`
+///
+@function get-expression-operator($expression) {
+  @each $operator in ('>=', '>', '<=', '<', '≥', '≤') {
+    @if str-index($expression, $operator) {
+      @return $operator;
+    }
+  }
+
+  // It is not possible to include a mixin inside a function, so we have to
+  // rely on the `im-log(..)` function rather than the `log(..)` mixin. Because
+  // functions cannot be called anywhere in Sass, we need to hack the call in
+  // a dummy variable, such as `$_`. If anybody ever raise a scoping issue with
+  // Sass 3.3, change this line in `@if im-log(..) {}` instead.
+  $_: im-log('No operator found in `#{$expression}`.');
+}
+
+
+///
+/// Get dimension of an expression, based on a found operator
+///
+/// @param {String} $expression - Expression to extract dimension from
+/// @param {String} $operator - Operator from `$expression`
+///
+/// @return {String} - `width` or `height` (or potentially anything else)
+///
+@function get-expression-dimension($expression, $operator) {
+  $operator-index: str-index($expression, $operator);
+  $parsed-dimension: str-slice($expression, 0, $operator-index - 1);
+  $dimension: 'width';
+
+  @if str-length($parsed-dimension) > 0 {
+    $dimension: $parsed-dimension;
+  }
+
+  @return $dimension;
+}
+
+
+///
+/// Get dimension prefix based on an operator
+///
+/// @param {String} $operator - Operator
+///
+/// @return {String} - `min` or `max`
+///
+@function get-expression-prefix($operator) {
+  @return if(index(('<', '<=', '≤'), $operator), 'max', 'min');
+}
+
+
+///
+/// Get value of an expression, based on a found operator
+///
+/// @param {String} $expression - Expression to extract value from
+/// @param {String} $operator - Operator from `$expression`
+///
+/// @return {Number} - A numeric value
+///
+@function get-expression-value($expression, $operator) {
+  $operator-index: str-index($expression, $operator);
+  $value: str-slice($expression, $operator-index + str-length($operator));
+
+  @if map-has-key($breakpoints, $value) {
+    $value: map-get($breakpoints, $value);
+  } @else {
+    $value: to-number($value);
+  }
+
+  $interval: map-get($unit-intervals, unit($value));
+
+  @if not $interval {
+    // It is not possible to include a mixin inside a function, so we have to
+    // rely on the `im-log(..)` function rather than the `log(..)` mixin. Because
+    // functions cannot be called anywhere in Sass, we need to hack the call in
+    // a dummy variable, such as `$_`. If anybody ever raise a scoping issue with
+    // Sass 3.3, change this line in `@if im-log(..) {}` instead.
+    $_: im-log('Unknown unit `#{unit($value)}`.');
+  }
+
+  @if $operator == '>' {
+    $value: $value + $interval;
+  } @else if $operator == '<' {
+    $value: $value - $interval;
+  }
+
+  @return $value;
+}
+
+
+///
+/// Parse an expression to return a valid media-query expression
+///
+/// @param {String} $expression - Expression to parse
+///
+/// @return {String} - Valid media query
+///
+@function parse-expression($expression) {
+  // If it is part of $media-expressions, it has no operator
+  // then there is no need to go any further, just return the value
+  @if map-has-key($media-expressions, $expression) {
+    @return map-get($media-expressions, $expression);
+  }
+
+  $operator: get-expression-operator($expression);
+  $dimension: get-expression-dimension($expression, $operator);
+  $prefix: get-expression-prefix($operator);
+  $value: get-expression-value($expression, $operator);
+
+  @return '(#{$prefix}-#{$dimension}: #{$value})';
+}
+
+///
+/// Slice `$list` between `$start` and `$end` indexes
+///
+/// @access private
+///
+/// @param {List} $list - List to slice
+/// @param {Number} $start [1] - Start index
+/// @param {Number} $end [length($list)] - End index
+///
+/// @return {List} Sliced list
+///
+@function slice($list, $start: 1, $end: length($list)) {
+  @if length($list) < 1 or $start > $end {
+    @return ();
+  }
+
+  $result: ();
+
+  @for $i from $start through $end {
+    $result: append($result, nth($list, $i));
+  }
+
+  @return $result;
+}
+
+////
+/// String to number converter
+/// @author Hugo Giraudel
+/// @access private
+////
+
+
+///
+/// Casts a string into a number
+///
+/// @param {String | Number} $value - Value to be parsed
+///
+/// @return {Number}
+///
+@function to-number($value) {
+  @if type-of($value) == 'number' {
+    @return $value;
+  } @else if type-of($value) != 'string' {
+    $_: im-log('Value for `to-number` should be a number or a string.');
+  }
+
+  $first-character: str-slice($value, 1, 1);
+  $result: 0;
+  $digits: 0;
+  $minus: ($first-character == '-');
+  $numbers: ('0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9);
+
+  // Remove +/- sign if present at first character
+  @if ($first-character == '+' or $first-character == '-') {
+    $value: str-slice($value, 2);
+  }
+
+  @for $i from 1 through str-length($value) {
+    $character: str-slice($value, $i, $i);
+
+    @if not (index(map-keys($numbers), $character) or $character == '.') {
+      @return to-length(if($minus, -$result, $result), str-slice($value, $i))
+    }
+
+    @if $character == '.' {
+      $digits: 1;
+    } @else if $digits == 0 {
+      $result: $result * 10 + map-get($numbers, $character);
+    } @else {
+      $digits: $digits * 10;
+      $result: $result + map-get($numbers, $character) / $digits;
+    }
+  }
+
+  @return if($minus, -$result, $result);
+}
+
+
+///
+/// Add `$unit` to `$value`
+///
+/// @param {Number} $value - Value to add unit to
+/// @param {String} $unit - String representation of the unit
+///
+/// @return {Number} - `$value` expressed in `$unit`
+///
+@function to-length($value, $unit) {
+  $units: ('px': 1px, 'cm': 1cm, 'mm': 1mm, '%': 1%, 'ch': 1ch, 'pc': 1pc, 'in': 1in, 'em': 1em, 'rem': 1rem, 'pt': 1pt, 'ex': 1ex, 'vw': 1vw, 'vh': 1vh, 'vmin': 1vmin, 'vmax': 1vmax);
+
+  @if not index(map-keys($units), $unit) {
+    $_: im-log('Invalid unit `#{$unit}`.');
+  }
+
+  @return $value * map-get($units, $unit);
+}
+
+///
+/// This mixin aims at redefining the configuration just for the scope of
+/// the call. It is helpful when having a component needing an extended
+/// configuration such as custom breakpoints (referred to as tweakpoints)
+/// for instance.
+///
+/// @author Hugo Giraudel
+///
+/// @param {Map} $tweakpoints [()] - Map of tweakpoints to be merged with `$breakpoints`
+/// @param {Map} $tweak-media-expressions [()] - Map of tweaked media expressions to be merged with `$media-expression`
+///
+/// @example scss - Extend the global breakpoints with a tweakpoint
+///  @include media-context(('custom': 678px)) {
+///    .foo {
+///      @include media('>phone', '<=custom') {
+///       // ...
+///      }
+///    }
+///  }
+///
+/// @example scss - Extend the global media expressions with a custom one
+///  @include media-context($tweak-media-expressions: ('all': 'all')) {
+///    .foo {
+///      @include media('all', '>phone') {
+///       // ...
+///      }
+///    }
+///  }
+///
+/// @example scss - Extend both configuration maps
+///  @include media-context(('custom': 678px), ('all': 'all')) {
+///    .foo {
+///      @include media('all', '>phone', '<=custom') {
+///       // ...
+///      }
+///    }
+///  }
+///
+@mixin media-context($tweakpoints: (), $tweak-media-expressions: ()) {
+  // Save global configuration
+  $global-breakpoints: $breakpoints;
+  $global-media-expressions: $media-expressions;
+
+  // Update global configuration
+  $breakpoints: map-merge($breakpoints, $tweakpoints) !global;
+  $media-expressions: map-merge($media-expressions, $tweak-media-expressions) !global;
+
+  @content;
+
+  // Restore global configuration
+  $breakpoints: $global-breakpoints !global;
+  $media-expressions: $global-media-expressions !global;
+}
+
+////
+/// include-media public exposed API
+/// @author Eduardo Boucas
+/// @access public
+////
+
+
+///
+/// Generates a media query based on a list of conditions
+///
+/// @param {Arglist}   $conditions  - Media query conditions
+///
+/// @example scss - With a single set breakpoint
+///  @include media('>phone') { }
+///
+/// @example scss - With two set breakpoints
+///  @include media('>phone', '<=tablet') { }
+///
+/// @example scss - With custom values
+///  @include media('>=358px', '<850px') { }
+///
+/// @example scss - With set breakpoints with custom values
+///  @include media('>desktop', '<=1350px') { }
+///
+/// @example scss - With a static expression
+///  @include media('retina2x') { }
+///
+/// @example scss - Mixing everything
+///  @include media('>=350px', '<tablet', 'retina3x') { }
+///
+@mixin media($conditions...) {
+  @if ($im-media-support and length($conditions) == 0) or
+      (not $im-media-support and im-intercepts-static-breakpoint($conditions...)) {
+    @content;
+  } @else if ($im-media-support and length($conditions) > 0) {
+    @media #{unquote(parse-expression(nth($conditions, 1)))} {
+      // Recursive call
+      @include media(slice($conditions, 2)...) {
+        @content;
+      }
+    }
+  }
+}