// LMS -- elements -- navigation
// ====================

// in this document:
// --------------------
// +notes
// +skip navigation
// +utility navigation
// +toggling utilities
// +case - calculator spacing

// +notes:
// --------------------
// this Sass partial should have its contents eventually abstracted out so that onboarding/non-coureware navigation is separate from in course-based navigation systems


// +skip navigation
// --------------------
%nav-skip {
  @extend %text-sr;
}

.nav-contents, .nav-skip {
  @extend %nav-skip;
}

// +utility navigation (course utiltiies)
// --------------------
.nav-utilities {
  @extend %ui-depth3;
  position: fixed;
  right: ($baseline/4);
  bottom: 0;

  .wrapper-utility {
    @extend %wipe-last-child;
    display: inline-block;
    vertical-align: bottom;
    @include margin-right(6px);
  }

  .utility-control {
    @include transition(background-color $tmg-f2 ease-in-out 0s, color $tmg-f2 ease-in-out 0s);
    position: relative;
    bottom: -($baseline/5);
    display: inline-block;
    vertical-align: middle;
    padding: ($baseline/2) ($baseline*0.75) ($baseline*0.75) ($baseline*0.75);
    background: $black-t1;
    color: $white;

    // STATE: hover/active
    &:hover, &:active {
      background: $gray-d1;
    }

    // STATE: is active/in use
    &.is-active {
      background: $gray-d1;
    }
  }

  // specific reset styling for any controls that are button elements
  .utility-control-button {
    border: none;
    box-shadow: none;
    text-shadow: none;
    font-size: inherit;
    font-weight: inherit;
    line-height: 0;
    border-radius: 0;

    // STATE: hover/active
    &:hover, &:active, &:focus {
      border: none;
      box-shadow: none;
    }
  }

  // specific utility navigation - student notes toggling
  .action-toggle-notes {
    @extend %no-outline;

    // STATE: is active/in use
    &.is-active {
      color: $student-notes-highlight-color-base;
    }
  }

  // +toggling utilities
  // --------------------
  .action-toggle-message {
    @extend %t-title8;
    @extend %t-strong;
    position: absolute;
    bottom: 0;
    @include right($baseline*2.5);
    display: inline-block;
    min-width: ($baseline*5);
    padding: ($baseline/2) ($baseline*0.75);
    opacity: 0;
    background-color: $gray-d1;
    color: $white;
    text-align: center;

    // STATE: is fleeting/temporary
    &.is-fleeting {
      @include animation(pulse-out $tmg-s2 ease-in-out);
    }
  }

  // +case - calculator spacing (needed for overriding calculator positioning)
  // --------------------
  &.has-utility-calculator {
    @include right($baseline*2.50);
  }
}
