node_modules/material-design-lite/src/layout/_layout.scss

/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

@import "../variables";
@import "../mixins";

// Navigation classes. Only used here for now, but we may at some point move
// this to its own component.
.mdl-navigation {
  display: flex;
  flex-wrap: nowrap;
  box-sizing: border-box;
}

.mdl-navigation__link {
  color: $layout-text-color;
  text-decoration: none;
  margin: 0;
  @include typo-body-1(true);

  // Align icons inside link with text
  & .material-icons {
    vertical-align: middle;
  }
}

// Main layout class.
.mdl-layout {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  -webkit-overflow-scrolling: touch;
}

// Utility classes for screen sizes.
.mdl-layout.is-small-screen .mdl-layout--large-screen-only {
  display: none;
}

.mdl-layout:not(.is-small-screen) .mdl-layout--small-screen-only {
  display: none;
}

.mdl-layout__container {
  position: absolute;
  width: 100%;
  height: 100%;
}


  // Optional utility classes for formatting special blocks in this component.
  .mdl-layout__title,
  .mdl-layout-title {
    display: block;
    position: relative;

    @include typo-title();
    font-weight: 400;
    box-sizing: border-box;
  }

  .mdl-layout-spacer {
    flex-grow: 1;
  }


  // Drawer.
  .mdl-layout__drawer {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;

    width: $layout-drawer-width;
    height: 100%;
    max-height: 100%;

    position: absolute;
    top: 0;
    left: 0;

    @include shadow-2dp();

    box-sizing: border-box;
    border-right: 1px solid $layout-drawer-border-color;
    background: $layout-drawer-bg-color;

    // Transform offscreen.
    transform: translateX(-$layout-drawer-width - 10px);
    transform-style: preserve-3d;
    will-change: transform;

    @include material-animation-default();
    transition-property: transform;

    color: $layout-text-color;

    overflow: visible;
    overflow-y: auto;

    z-index: 5;

    &.is-visible {
      transform: translateX(0);
      & ~ .mdl-layout__content.mdl-layout__content {
        overflow: hidden;
      }
    }

    & > * {
      flex-shrink: 0;
    }

    & > .mdl-layout__title,
    & > .mdl-layout-title {
      line-height: $layout-desktop-header-height;
      padding-left: $layout-header-desktop-indent;

      @media screen and (max-width: $layout-screen-size-threshold) {
        line-height: $layout-mobile-header-height;
        padding-left: $layout-header-mobile-indent;
      }
    }

    & .mdl-navigation {
      flex-direction: column;
      align-items: stretch;
      padding-top: 16px;

      & .mdl-navigation__link {
      display: block;
      flex-shrink: 0;
      padding: 16px $layout-header-desktop-indent;
      margin: 0;
      color: $layout-drawer-navigation-color;

        @media screen and (max-width: $layout-screen-size-threshold) {
          padding: 16px $layout-header-mobile-indent;
        }

        &:hover {
          background-color: $layout-nav-color;
        }

        &--current {
            background-color: $layout-drawer-navigation-link-active-background;
            color: $layout-drawer-navigation-link-active-color;
        }
      }
    }

    @media screen and (min-width: $layout-screen-size-threshold + 1px) {
      .mdl-layout--fixed-drawer > & {
        transform: translateX(0);
      }
    }
  }


  // Drawer button.
  // TODO(sgomes): Replace with an icon button when we have that component.
  .mdl-layout__drawer-button {
    display: block;

    position: absolute;
    height: $layout-drawer-button-desktop-size;
    width: $layout-drawer-button-desktop-size;
    border: 0;

    flex-shrink: 0;

    overflow: hidden;
    text-align: center;
    cursor: pointer;
    font-size: 26px;
    line-height: $layout-mobile-header-height;
    font-family: Helvetica, Arial, sans-serif;
    margin: ($layout-mobile-header-height - $layout-drawer-button-desktop-size) 12px;
    top: 0;
    left: 0;
    color: $layout-header-text-color;

    z-index: 4;

    .mdl-layout__header & {
      position: absolute;
      color: $layout-header-text-color;
      background-color: inherit;

      @media screen and (max-width: $layout-screen-size-threshold) {
        margin: 4px;
      }
    }

    @media screen and (max-width: $layout-screen-size-threshold) {
      margin: 4px;
      color: rgba(0, 0, 0, 0.5);
    }

    @media screen and (min-width: $layout-screen-size-threshold + 1px) {
      line-height: 54px;

      .mdl-layout--no-desktop-drawer-button &,
      .mdl-layout--fixed-drawer > &,
      .mdl-layout--no-drawer-button & {
        display: none;
      }
    }
  }

  .mdl-layout__header {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: flex-start;
    box-sizing: border-box;
    flex-shrink: 0;

    width: 100%;
    margin: 0;
    padding: 0;
    border: none;
    min-height: $layout-desktop-header-height;
    max-height: 1000px;
    z-index: 3;

    background-color: $layout-header-bg-color;
    color: $layout-header-text-color;

    @include shadow-2dp();
    @include material-animation-default();
    transition-property: max-height, box-shadow;

    @media screen and (max-width: $layout-screen-size-threshold) {
      min-height: $layout-mobile-header-height;
    }

    .mdl-layout--fixed-drawer.is-upgraded:not(.is-small-screen) > & {
      margin-left: $layout-drawer-width;
      width: calc(100% - #{$layout-drawer-width});
    }

    @media screen and (min-width: $layout-screen-size-threshold + 1px) {
      .mdl-layout--fixed-drawer > & {
        .mdl-layout__header-row {
          padding-left: 40px;
        }
      }
    }

    & > .mdl-layout-icon {
      position: absolute;
      left: $layout-header-desktop-indent;
      top: ($layout-desktop-header-height - $layout-header-icon-size) / 2;
      height: $layout-header-icon-size;
      width: $layout-header-icon-size;
      overflow: hidden;
      z-index: 3;
      display: block;

      @media screen and (max-width: $layout-screen-size-threshold) {
        left: $layout-header-mobile-indent;
        top: ($layout-mobile-header-height - $layout-header-icon-size) / 2;
      }
    }

    .mdl-layout.has-drawer & > .mdl-layout-icon {
      display: none;
    }

    &.is-compact {
      max-height: $layout-desktop-header-height;

      @media screen and (max-width: $layout-screen-size-threshold) {
        max-height: $layout-mobile-header-height;
      }
    }

    &.is-compact.has-tabs {
      height: $layout-desktop-header-height + $layout-tab-bar-height;

      @media screen and (max-width: $layout-screen-size-threshold) {
        min-height: $layout-mobile-header-height + $layout-tab-bar-height;
      }
    }

    @media screen and (max-width: $layout-screen-size-threshold) {
      & {
        display: none;
      }

      .mdl-layout--fixed-header > & {
        display: flex;
      }
    }
  }

    .mdl-layout__header--transparent.mdl-layout__header--transparent {
      background-color: transparent;
      box-shadow: none;
    }

    .mdl-layout__header--seamed {
      box-shadow: none;
    }

    .mdl-layout__header--scroll {
      box-shadow: none;
    }

    .mdl-layout__header--waterfall {
      box-shadow: none;
      overflow: hidden;

      &.is-casting-shadow {
        @include shadow-2dp();
      }

      &.mdl-layout__header--waterfall-hide-top {
        justify-content: flex-end;
      }
    }

    .mdl-layout__header-row {
      display: flex;
      flex-direction: row;
      flex-wrap: nowrap;
      flex-shrink: 0;
      box-sizing: border-box;
      align-self: stretch;
      align-items: center;
      height: $layout-header-desktop-row-height;
      margin: 0;
      padding: 0 $layout-header-desktop-indent 0 $layout-header-desktop-baseline;

      .mdl-layout--no-drawer-button & {
        padding-left: $layout-header-desktop-indent;
      }

      @media screen and (min-width: $layout-screen-size-threshold + 1px) {
        .mdl-layout--no-desktop-drawer-button & {
          padding-left: $layout-header-desktop-indent;
        }
      }

      @media screen and (max-width: $layout-screen-size-threshold) {
        height: $layout-header-mobile-row-height;
        padding: 0 $layout-header-mobile-indent 0 $layout-header-mobile-baseline;

        .mdl-layout--no-drawer-button & {
          padding-left: $layout-header-mobile-indent;
        }
      }

      & > * {
        flex-shrink: 0;
      }

      .mdl-layout__header--scroll & {
        width: 100%;
      }

      & .mdl-navigation {
        margin: 0;
        padding: 0;
        height: $layout-header-desktop-row-height;
        flex-direction: row;
        align-items: center;

        @media screen and (max-width: $layout-screen-size-threshold) {
          height: $layout-header-mobile-row-height;
        }
      }

      & .mdl-navigation__link {
        display: block;
        color: $layout-header-text-color;
        line-height: $layout-header-desktop-row-height;
        padding: 0 24px;

        @media screen and (max-width: $layout-screen-size-threshold) {
          line-height: $layout-header-mobile-row-height;
          padding: 0 $layout-header-mobile-indent;
        }
      }
    }

  // Obfuscator.
  .mdl-layout__obfuscator {
    background-color: transparent;
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    z-index: 4;
    visibility: hidden;
    transition-property: background-color;
    @include material-animation-default();

    &.is-visible {
      background-color: rgba(0, 0, 0, 0.5);
      visibility: visible;
    }

    @supports (pointer-events: auto) {
      background-color: rgba(0, 0, 0, 0.5);
      opacity: 0;
      transition-property: opacity;
      visibility: visible;
      pointer-events: none;
      &.is-visible {
        pointer-events: auto;
        opacity: 1;
      }
    }
  }


  // Content.
  .mdl-layout__content {
    // Fix IE10 bug.
    -ms-flex: 0 1 auto;

    position: relative;
    display: inline-block;
    overflow-y: auto;
    overflow-x: hidden;
    flex-grow: 1;
    z-index: 1;
    -webkit-overflow-scrolling: touch;

    .mdl-layout--fixed-drawer > & {
      margin-left: $layout-drawer-width;
    }

    .mdl-layout__container.has-scrolling-header & {
      overflow: visible;
    }

    @media screen and (max-width: $layout-screen-size-threshold) {
      .mdl-layout--fixed-drawer > & {
        margin-left: 0;
      }

      .mdl-layout__container.has-scrolling-header & {
        overflow-y: auto;
        overflow-x: hidden;
      }
    }
  }

  // Tabs.
  .mdl-layout__tab-bar {
    height: $layout-tab-bar-height * 2;
    margin: 0;
    width: calc(100% -
        #{(($layout-header-desktop-baseline - $layout-tab-desktop-padding) * 2)});
    padding: 0 0 0
        ($layout-header-desktop-baseline - $layout-tab-desktop-padding);
    display: flex;
    background-color: $layout-header-bg-color;
    overflow-y: hidden;
    overflow-x: scroll;

    &::-webkit-scrollbar {
      display: none;
    }

    .mdl-layout--no-drawer-button & {
      padding-left: $layout-header-desktop-indent - $layout-tab-desktop-padding;
      width: calc(100% -
          #{(($layout-header-desktop-indent - $layout-tab-desktop-padding) * 2)});
    }

    @media screen and (min-width: $layout-screen-size-threshold + 1px) {
      .mdl-layout--no-desktop-drawer-button & {
        padding-left: $layout-header-desktop-indent - $layout-tab-desktop-padding;
        width: calc(100% -
            #{(($layout-header-desktop-indent - $layout-tab-desktop-padding) * 2)});
      }
    }

    @media screen and (max-width: $layout-screen-size-threshold) {
      width: calc(100% -
          #{($layout-header-mobile-baseline - $layout-tab-mobile-padding)});
      padding: 0 0 0
          ($layout-header-mobile-baseline - $layout-tab-mobile-padding);

      .mdl-layout--no-drawer-button & {
        width: calc(100% -
            #{(($layout-header-mobile-indent - $layout-tab-mobile-padding) * 2)});
        padding-left: $layout-header-mobile-indent - $layout-tab-mobile-padding;
      }
    }

    .mdl-layout--fixed-tabs & {
      padding: 0;
      overflow: hidden;
      width: 100%;
    }
  }

  .mdl-layout__tab-bar-container {
    position: relative;
    height: $layout-tab-bar-height;
    width: 100%;
    border: none;
    margin: 0;
    z-index: 2;
    flex-grow: 0;
    flex-shrink: 0;
    overflow: hidden;

    .mdl-layout__container > & {
      position: absolute;
      top: 0;
      left: 0;
    }
  }

  .mdl-layout__tab-bar-button {
    display: inline-block;
    position: absolute;
    top: 0;
    height: $layout-tab-bar-height;
    width: $layout-header-desktop-baseline - $layout-tab-desktop-padding;
    z-index: 4;
    text-align: center;
    background-color: $layout-header-bg-color;
    color: transparent;
    cursor: pointer;
    user-select: none;

    .mdl-layout--no-desktop-drawer-button &,
    .mdl-layout--no-drawer-button & {
      width: $layout-header-desktop-indent - $layout-tab-desktop-padding;

      & .material-icons {
        position: relative;
        left: ($layout-header-desktop-indent - $layout-tab-desktop-padding - 24px) / 2;
      }
    }

    @media screen and (max-width: $layout-screen-size-threshold) {
      width: $layout-header-mobile-baseline - $layout-tab-mobile-padding;
    }

    .mdl-layout--fixed-tabs & {
      display: none;
    }

    & .material-icons {
      line-height: $layout-tab-bar-height;
    }

    &.is-active {
      color: $layout-header-text-color;
    }
  }

  .mdl-layout__tab-bar-left-button {
    left: 0;
  }

  .mdl-layout__tab-bar-right-button {
    right: 0;
  }

  .mdl-layout__tab {
    margin: 0;
    border: none;
    padding: 0 $layout-tab-desktop-padding 0 $layout-tab-desktop-padding;

    float: left;
    position: relative;
    display: block;
    flex-grow: 0;
    flex-shrink: 0;

    text-decoration: none;
    height: $layout-tab-bar-height;
    line-height: $layout-tab-bar-height;

    text-align: center;
    font-weight: 500;
    font-size: $layout-tab-font-size;
    text-transform: uppercase;

    color: $layout-header-tab-text-color;
    overflow: hidden;

    @media screen and (max-width: $layout-screen-size-threshold) {
      padding: 0 $layout-tab-mobile-padding 0 $layout-tab-mobile-padding;
    }

    .mdl-layout--fixed-tabs & {
      float: none;
      flex-grow: 1;
      padding: 0;
    }

    .mdl-layout.is-upgraded &.is-active {
      color: $layout-header-text-color;
    }

    .mdl-layout.is-upgraded &.is-active::after {
      height: $layout-tab-highlight-thickness;
      width: 100%;
      display: block;
      content: " ";
      bottom: 0;
      left: 0;
      position: absolute;
      background: $layout-header-tab-highlight;
      animation: border-expand 0.2s cubic-bezier(0.4, 0.0, 0.4, 1) 0.01s alternate forwards;
      transition: all 1s cubic-bezier(0.4, 0.0, 1, 1);
    }

    & .mdl-layout__tab-ripple-container {
      display: block;
      position: absolute;
      height: 100%;
      width: 100%;
      left: 0;
      top: 0;
      z-index: 1;
      overflow: hidden;

      & .mdl-ripple {
        background-color: $layout-header-text-color;
      }
    }
  }

  .mdl-layout__tab-panel {
    display: block;

    .mdl-layout.is-upgraded & {
      display: none;
    }

    .mdl-layout.is-upgraded &.is-active {
      display: block;
    }
  }