// BUTTON STYLES
// -------------

// Base styles
// --------------------------------------------------

// Core
.btn {
  display: inline-block;
  .ie7-inline-block();
  padding: 4px 10px 4px;
  margin-bottom: 0; // For input.btn
  font-size: @buttonFontSize;
  font-family: @buttonFontFamily;
  line-height: @baseLineHeight - 1;
  color: @grayDark;
  text-align: center;
  text-shadow: 0 1px 1px rgba(255,255,255,.75);
  vertical-align: middle;
  .buttonBackground(@btnBackground, @btnBackgroundHighlight);
  border: 1px solid @btnBorder;
  border-bottom-color: darken(@btnBorder, 10%);
  .border-radius(4px);
  @shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
  .box-shadow(@shadow);
  cursor: pointer;

  // Give IE7 some love
  .ie7-restore-left-whitespace();
}

// Hover state
body a.btn:hover {
  text-decoration:none;
}
.btn:hover {
  color: @grayDark;
  text-decoration: none;
  background-color: darken(@white, 10%);
  background-position: 0 -15px;

  // transition is only when going to hover, otherwise the background
  // behind the gradient (there for IE<=9 fallback) gets mismatched
  .transition(background-position .1s linear);
}

// Focus state for keyboard and accessibility
.btn:focus {
  .tab-focus();
}

// Active state
.btn.active,
.btn:active {
  background-image: none;
  @shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
  .box-shadow(@shadow);
  background-color: darken(@white, 10%);
  background-color: darken(@white, 15%) e("\9");
  outline: 0;
}

// Disabled state
.btn.disabled,
.btn[disabled] {
  cursor: default;
  background-image: none;
  background-color: darken(@white, 10%);
  .opacity(65);
  .box-shadow(none);
}


// Button Sizes
// --------------------------------------------------

// Large
.btn-large {
  padding: 9px 14px;
  font-size: @buttonFontSize + 2px;
  line-height: normal;
  .border-radius(5px);
}
.btn-large [class^="icon-"] {
  margin-top: 1px;
}

// Small
.btn-small {
  padding: 5px 9px;
  font-size: @buttonFontSize - 2px;
  line-height: @baseLineHeight - 2px;
}
.btn-small [class^="icon-"] {
  margin-top: -1px;
}

// Mini
.btn-mini {
  padding: 2px 6px;
  font-size: 11px;
  line-height: 14px;
}


// Alternate buttons
// --------------------------------------------------

// Set text color
// -------------------------
.btn-primary,
.btn-primary:hover,
.btn-warning,
.btn-warning:hover,
.btn-important,
.btn-important:hover,
.btn-success,
.btn-success:hover,
.btn-info,
.btn-info:hover,
.btn-inverse,
.btn-inverse:hover {
  text-shadow: 0 -1px 0 rgba(0,0,0,.25);
  color: @white;
}
// Provide *some* extra contrast for those who can get it
.btn-primary.active,
.btn-warning.active,
.btn-important.active,
.btn-success.active,
.btn-info.active,
.btn-inverse.active {
  color: rgba(255,255,255,.75);
}

// Set the backgrounds
// -------------------------
.btn-primary {
  .buttonBackground(@btnPrimaryBackground, @btnPrimaryBackgroundHighlight);
}
// Warning appears are orange
.btn-warning {
  .buttonBackground(@btnWarningBackground, @btnWarningBackgroundHighlight);
}
// Important and error appear as red
.btn-important {
  .buttonBackground(@btnImportantBackground, @btnImportantBackgroundHighlight);
}
// Success appears as green
.btn-success {
  .buttonBackground(@btnSuccessBackground, @btnSuccessBackgroundHighlight);
}
// Info appears as a neutral blue
.btn-info {
  .buttonBackground(@btnInfoBackground, @btnInfoBackgroundHighlight);
}
// Inverse appears as dark gray
.btn-inverse {
  .buttonBackground(@btnInverseBackground, @btnInverseBackgroundHighlight);
}


// Cross-browser Jank
// --------------------------------------------------

button.btn,
input[type="submit"].btn {

  // Firefox 3.6 only I believe
  &::-moz-focus-inner {
    padding: 0;
    border: 0;
  }

  // IE7 has some default padding on button controls
  *padding-top: 2px;
  *padding-bottom: 2px;
  &.btn-large {
    *padding-top: 7px;
    *padding-bottom: 7px;
  }
  &.btn-small {
    *padding-top: 3px;
    *padding-bottom: 3px;
  }
  &.btn-mini {
    *padding-top: 1px;
    *padding-bottom: 1px;
  }
}


// BUTTON GROUPS
// -------------


// Make the div behave like a button
.btn-group {
  position: relative;
  .clearfix(); // clears the floated buttons
  .ie7-restore-left-whitespace();
}

// Space out series of button groups
.btn-group + .btn-group {
  margin-left: 5px;
}

// Optional: Group multiple button groups together for a toolbar
.btn-toolbar {
  margin-top: @baseLineHeight / 2;
  margin-bottom: @baseLineHeight / 2;
  .btn-group {
    display: inline-block;
    .ie7-inline-block();
  }
}

// Float them, remove border radius, then re-add to first and last elements
.btn-group .btn {
  position: relative;
  float: left;
  margin-left: -1px;
  .border-radius(0);
}
// Set corners individual because sometimes a single button can be in a .btn-group and we need :first-child and :last-child to both match
.btn-group .btn:first-child {
  margin-left: 0;
     -webkit-border-top-left-radius: 4px;
         -moz-border-radius-topleft: 4px;
             border-top-left-radius: 4px;
  -webkit-border-bottom-left-radius: 4px;
      -moz-border-radius-bottomleft: 4px;
          border-bottom-left-radius: 4px;
}
.btn-group .btn:last-child,
.btn-group .dropdown-toggle {
     -webkit-border-top-right-radius: 4px;
         -moz-border-radius-topright: 4px;
             border-top-right-radius: 4px;
  -webkit-border-bottom-right-radius: 4px;
      -moz-border-radius-bottomright: 4px;
          border-bottom-right-radius: 4px;
}
// Reset corners for large buttons
.btn-group .btn.large:first-child {
  margin-left: 0;
     -webkit-border-top-left-radius: 6px;
         -moz-border-radius-topleft: 6px;
             border-top-left-radius: 6px;
  -webkit-border-bottom-left-radius: 6px;
      -moz-border-radius-bottomleft: 6px;
          border-bottom-left-radius: 6px;
}
.btn-group .btn.large:last-child,
.btn-group .large.dropdown-toggle {
     -webkit-border-top-right-radius: 6px;
         -moz-border-radius-topright: 6px;
             border-top-right-radius: 6px;
  -webkit-border-bottom-right-radius: 6px;
      -moz-border-radius-bottomright: 6px;
          border-bottom-right-radius: 6px;
}

// On hover/focus/active, bring the proper btn to front
.btn-group .btn:hover,
.btn-group .btn:focus,
.btn-group .btn:active,
.btn-group .btn.active {
  z-index: 2;
}

// On active and open, don't show outline
.btn-group .dropdown-toggle:active,
.btn-group.open .dropdown-toggle {
  outline: 0;
}


// Split button dropdowns

// Give the line between buttons some depth
.btn-group .dropdown-toggle {
  padding-left: 8px;
  padding-right: 8px;
  @shadow: inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
  .box-shadow(@shadow);
  *padding-top: 3px;
  *padding-bottom: 3px;
}
.btn-group .btn-mini.dropdown-toggle {
  padding-left: 5px;
  padding-right: 5px;
  *padding-top: 1px;
  *padding-bottom: 1px;
}
.btn-group .btn-small.dropdown-toggle {
  *padding-top: 4px;
  *padding-bottom: 4px;
}
.btn-group .btn-large.dropdown-toggle {
  padding-left: 12px;
  padding-right: 12px;
}

.btn-group.open {
  // IE7's z-index only goes to the nearest positioned ancestor, which would
  // make the menu appear below buttons that appeared later on the page
  *z-index: @zindexDropdown;

  // Reposition menu on open and round all corners
  .dropdown-menu {
    display: block;
    margin-top: 1px;
    .border-radius(5px);
  }

  .dropdown-toggle {
    background-image: none;
    @shadow: inset 0 1px 6px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
    .box-shadow(@shadow);
  }
}

// Reposition the caret
.btn .caret {
  margin-top: 7px;
  margin-left: 0;
}
.btn:hover .caret,
.open.btn-group .caret {
  .opacity(100);
}
// Carets in other button sizes
.btn-mini .caret {
  margin-top: 5px;
}
.btn-small .caret {
  margin-top: 6px;
}
.btn-large .caret {
  margin-top: 6px;
  border-left:  5px solid transparent;
  border-right: 5px solid transparent;
  border-top:   5px solid @black;
}


// Account for other colors
.btn-primary,
.btn-warning,
.btn-important,
.btn-info,
.btn-success,
.btn-inverse {
  .caret {
    border-top-color: @white;
    border-bottom-color: @white;
    .opacity(75);
  }
}