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+//
+// Buttons
+// --------------------------------------------------
+
+
+// Base styles
+// --------------------------------------------------
+
+.btn {
+ display: inline-block;
+ margin-bottom: 0; // For input.btn
+ font-weight: @btn-font-weight;
+ text-align: center;
+ vertical-align: middle;
+ touch-action: manipulation;
+ cursor: pointer;
+ background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
+ border: 1px solid transparent;
+ white-space: nowrap;
+ .button-size(@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @border-radius-base);
+ .user-select(none);
+
+ &,
+ &:active,
+ &.active {
+ &:focus,
+ &.focus {
+ .tab-focus();
+ }
+ }
+
+ &:hover,
+ &:focus,
+ &.focus {
+ color: @btn-default-color;
+ text-decoration: none;
+ }
+
+ &:active,
+ &.active {
+ outline: 0;
+ background-image: none;
+ .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+ }
+
+ &.disabled,
+ &[disabled],
+ fieldset[disabled] & {
+ cursor: @cursor-disabled;
+ pointer-events: none; // Future-proof disabling of clicks
+ .opacity(.65);
+ .box-shadow(none);
+ }
+}
+
+
+// Alternate buttons
+// --------------------------------------------------
+
+.btn-default {
+ .button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);
+}
+.btn-primary {
+ .button-variant(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
+}
+// Success appears as green
+.btn-success {
+ .button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
+}
+// Info appears as blue-green
+.btn-info {
+ .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
+}
+// Warning appears as orange
+.btn-warning {
+ .button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
+}
+// Danger and error appear as red
+.btn-danger {
+ .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
+}
+
+
+// Link buttons
+// -------------------------
+
+// Make a button look and behave like a link
+.btn-link {
+ color: @link-color;
+ font-weight: normal;
+ border-radius: 0;
+
+ &,
+ &:active,
+ &.active,
+ &[disabled],
+ fieldset[disabled] & {
+ background-color: transparent;
+ .box-shadow(none);
+ }
+ &,
+ &:hover,
+ &:focus,
+ &:active {
+ border-color: transparent;
+ }
+ &:hover,
+ &:focus {
+ color: @link-hover-color;
+ text-decoration: @link-hover-decoration;
+ background-color: transparent;
+ }
+ &[disabled],
+ fieldset[disabled] & {
+ &:hover,
+ &:focus {
+ color: @btn-link-disabled-color;
+ text-decoration: none;
+ }
+ }
+}
+
+
+// Button Sizes
+// --------------------------------------------------
+
+.btn-lg {
+ // line-height: ensure even-numbered height of button next to large input
+ .button-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large);
+}
+.btn-sm {
+ // line-height: ensure proper height of button next to small input
+ .button-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small);
+}
+.btn-xs {
+ .button-size(@padding-xs-vertical; @padding-xs-horizontal; @font-size-small; @line-height-small; @border-radius-small);
+}
+
+
+// Block button
+// --------------------------------------------------
+
+.btn-block {
+ display: block;
+ width: 100%;
+}
+
+// Vertically space out multiple block buttons
+.btn-block + .btn-block {
+ margin-top: 5px;
+}
+
+// Specificity overrides
+input[type="submit"],
+input[type="reset"],
+input[type="button"] {
+ &.btn-block {
+ width: 100%;
+ }
+}