//
// Forms
// --------------------------------------------------


// Normalize non-controls
//
// Restyle and baseline non-control form elements.

fieldset {
 padding: 0;
 margin: 0;
 border: 0;
 // Chrome and Firefox set a `min-width: min-content;` on fieldsets,
 // so we reset that to ensure it behaves more like a standard block element.
 // See https://github.com/twbs/bootstrap/issues/12359.
 min-width: 0;
}

legend {
 display: block;
 width: 100%;
 padding: 0;
 margin-bottom: @line-height-computed;
 font-size: (@font-size-base * 1.5);
 line-height: inherit;
 color: @legend-color;
 border: 0;
 border-bottom: 1px solid @legend-border-color;
}

label {
 display: inline-block;
 max-width: 100%; // Force IE8 to wrap long content (see https://github.com/twbs/bootstrap/issues/13141)
 margin-bottom: 5px;
 font-weight: bold;
}


// Normalize form controls
//
// While most of our form styles require extra classes, some basic normalization
// is required to ensure optimum display with or without those classes to better
// address browser inconsistencies.

// Override content-box in Normalize (* isn't specific enough)
input[type="search"] {
 .box-sizing(border-box);
}

// Position radios and checkboxes better
input[type="radio"],
input[type="checkbox"] {
 margin: 4px 0 0;
 margin-top: 1px 9円; // IE8-9
 line-height: normal;
}

// Set the height of file controls to match text inputs
input[type="file"] {
 display: block;
}

// Make range inputs behave like textual form controls
input[type="range"] {
 display: block;
 width: 100%;
}

// Make multiple select elements height not fixed
select[multiple],
select[size] {
 height: auto;
}

// Focus for file, radio, and checkbox
input[type="file"]:focus,
input[type="radio"]:focus,
input[type="checkbox"]:focus {
 .tab-focus();
}

// Adjust output element
output {
 display: block;
 padding-top: (@padding-base-vertical + 1);
 font-size: @font-size-base;
 line-height: @line-height-base;
 color: @input-color;
}


// Common form controls
//
// Shared size and type resets for form controls. Apply `.form-control` to any
// of the following form controls:
//
// select
// textarea
// input[type="text"]
// input[type="password"]
// input[type="datetime"]
// input[type="datetime-local"]
// input[type="date"]
// input[type="month"]
// input[type="time"]
// input[type="week"]
// input[type="number"]
// input[type="email"]
// input[type="url"]
// input[type="search"]
// input[type="tel"]
// input[type="color"]

.form-control {
 display: block;
 width: 100%;
 height: @input-height-base; // Make inputs at least the height of their button counterpart (base line-height + padding + border)
 padding: @padding-base-vertical @padding-base-horizontal;
 font-size: @font-size-base;
 line-height: @line-height-base;
 color: @input-color;
 background-color: @input-bg;
 background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
 border: 1px solid @input-border;
 border-radius: @input-border-radius; // Note: This has no effect on <select>s in some browsers, due to the limited stylability of <select>s in CSS.
 .box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
 .transition(~"border-color ease-in-out .15s, box-shadow ease-in-out .15s");

 // Customize the `:focus` state to imitate native WebKit styles.
 .form-control-focus();

 // Placeholder
 .placeholder();

 // Disabled and read-only inputs
 //
 // HTML5 says that controls under a fieldset > legend:first-child won't be
 // disabled if the fieldset is disabled. Due to implementation difficulty, we
 // don't honor that edge case; we style them as disabled anyway.
 &[disabled],
 &[readonly],
 fieldset[disabled] & {
 background-color: @input-bg-disabled;
 opacity: 1; // iOS fix for unreadable disabled content; see https://github.com/twbs/bootstrap/issues/11655
 }

 &[disabled],
 fieldset[disabled] & {
 cursor: @cursor-disabled;
 }

 // Reset height for `textarea`s
 textarea& {
 height: auto;
 }
}


// Search inputs in iOS
//
// This overrides the extra rounded corners on search inputs in iOS so that our
// `.form-control` class can properly style them. Note that this cannot simply
// be added to `.form-control` as it's not specific enough. For details, see
// https://github.com/twbs/bootstrap/issues/11586.

input[type="search"] {
 -webkit-appearance: none;
}


// Special styles for iOS temporal inputs
//
// In Mobile Safari, setting `display: block` on temporal inputs causes the
// text within the input to become vertically misaligned. As a workaround, we
// set a pixel line-height that matches the given height of the input, but only
// for Safari. See https://bugs.webkit.org/show_bug.cgi?id=139848

@media screen and (-webkit-min-device-pixel-ratio: 0) {
 input[type="date"],
 input[type="time"],
 input[type="datetime-local"],
 input[type="month"] {
 line-height: @input-height-base;

 &.input-sm,
 .input-group-sm & {
 line-height: @input-height-small;
 }

 &.input-lg,
 .input-group-lg & {
 line-height: @input-height-large;
 }
 }
}


// Form groups
//
// Designed to help with the organization and spacing of vertical forms. For
// horizontal forms, use the predefined grid classes.

.form-group {
 margin-bottom: @form-group-margin-bottom;
}


// Checkboxes and radios
//
// Indent the labels to position radios/checkboxes as hanging controls.

.radio,
.checkbox {
 position: relative;
 display: block;
 margin-top: 10px;
 margin-bottom: 10px;

 label {
 min-height: @line-height-computed; // Ensure the input doesn't jump when there is no text
 padding-left: 20px;
 margin-bottom: 0;
 font-weight: normal;
 cursor: pointer;
 }
}
.radio input[type="radio"],
.radio-inline input[type="radio"],
.checkbox input[type="checkbox"],
.checkbox-inline input[type="checkbox"] {
 position: absolute;
 margin-left: -20px;
 margin-top: 4px 9円;
}

.radio + .radio,
.checkbox + .checkbox {
 margin-top: -5px; // Move up sibling radios or checkboxes for tighter spacing
}

// Radios and checkboxes on same line
.radio-inline,
.checkbox-inline {
 position: relative;
 display: inline-block;
 padding-left: 20px;
 margin-bottom: 0;
 vertical-align: middle;
 font-weight: normal;
 cursor: pointer;
}
.radio-inline + .radio-inline,
.checkbox-inline + .checkbox-inline {
 margin-top: 0;
 margin-left: 10px; // space out consecutive inline controls
}

// Apply same disabled cursor tweak as for inputs
// Some special care is needed because <label>s don't inherit their parent's `cursor`.
//
// Note: Neither radios nor checkboxes can be readonly.
input[type="radio"],
input[type="checkbox"] {
 &[disabled],
 &.disabled,
 fieldset[disabled] & {
 cursor: @cursor-disabled;
 }
}
// These classes are used directly on <label>s
.radio-inline,
.checkbox-inline {
 &.disabled,
 fieldset[disabled] & {
 cursor: @cursor-disabled;
 }
}
// These classes are used on elements with <label> descendants
.radio,
.checkbox {
 &.disabled,
 fieldset[disabled] & {
 label {
 cursor: @cursor-disabled;
 }
 }
}


// Static form control text
//
// Apply class to a `p` element to make any string of text align with labels in
// a horizontal form layout.

.form-control-static {
 // Size it appropriately next to real form controls
 padding-top: (@padding-base-vertical + 1);
 padding-bottom: (@padding-base-vertical + 1);
 // Remove default margin from `p`
 margin-bottom: 0;
 min-height: (@line-height-computed + @font-size-base);

 &.input-lg,
 &.input-sm {
 padding-left: 0;
 padding-right: 0;
 }
}


// Form control sizing
//
// Build on `.form-control` with modifier classes to decrease or increase the
// height and font-size of form controls.
//
// The `.form-group-* form-control` variations are sadly duplicated to avoid the
// issue documented in https://github.com/twbs/bootstrap/issues/15074.

.input-sm {
 .input-size(@input-height-small; @padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @input-border-radius-small);
}
.form-group-sm {
 .form-control {
 .input-size(@input-height-small; @padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @input-border-radius-small);
 }
 .form-control-static {
 height: @input-height-small;
 padding: @padding-small-vertical @padding-small-horizontal;
 font-size: @font-size-small;
 line-height: @line-height-small;
 min-height: (@line-height-computed + @font-size-small);
 }
}

.input-lg {
 .input-size(@input-height-large; @padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @input-border-radius-large);
}
.form-group-lg {
 .form-control {
 .input-size(@input-height-large; @padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @input-border-radius-large);
 }
 .form-control-static {
 height: @input-height-large;
 padding: @padding-large-vertical @padding-large-horizontal;
 font-size: @font-size-large;
 line-height: @line-height-large;
 min-height: (@line-height-computed + @font-size-large);
 }
}


// Form control feedback states
//
// Apply contextual and semantic states to individual form controls.

.has-feedback {
 // Enable absolute positioning
 position: relative;

 // Ensure icons don't overlap text
 .form-control {
 padding-right: (@input-height-base * 1.25);
 }
}
// Feedback icon (requires .glyphicon classes)
.form-control-feedback {
 position: absolute;
 top: 0;
 right: 0;
 z-index: 2; // Ensure icon is above input groups
 display: block;
 width: @input-height-base;
 height: @input-height-base;
 line-height: @input-height-base;
 text-align: center;
 pointer-events: none;
}
.input-lg + .form-control-feedback {
 width: @input-height-large;
 height: @input-height-large;
 line-height: @input-height-large;
}
.input-sm + .form-control-feedback {
 width: @input-height-small;
 height: @input-height-small;
 line-height: @input-height-small;
}

// Feedback states
.has-success {
 .form-control-validation(@state-success-text; @state-success-text; @state-success-bg);
}
.has-warning {
 .form-control-validation(@state-warning-text; @state-warning-text; @state-warning-bg);
}
.has-error {
 .form-control-validation(@state-danger-text; @state-danger-text; @state-danger-bg);
}

// Reposition feedback icon if input has visible label above
.has-feedback label {

 & ~ .form-control-feedback {
 top: (@line-height-computed + 5); // Height of the `label` and its margin
 }
 &.sr-only ~ .form-control-feedback {
 top: 0;
 }
}


// Help text
//
// Apply to any element you wish to create light text for placement immediately
// below a form control. Use for general help, formatting, or instructional text.

.help-block {
 display: block; // account for any element using help-block
 margin-top: 5px;
 margin-bottom: 10px;
 color: lighten(@text-color, 25%); // lighten the text some for contrast
}


// Inline forms
//
// Make forms appear inline(-block) by adding the `.form-inline` class. Inline
// forms begin stacked on extra small (mobile) devices and then go inline when
// viewports reach <768px.
//
// Requires wrapping inputs and labels with `.form-group` for proper display of
// default HTML form controls and our custom form controls (e.g., input groups).
//
// Heads up! This is mixin-ed into `.navbar-form` in navbars.less.

.form-inline {

 // Kick in the inline
 @media (min-width: @screen-sm-min) {
 // Inline-block all the things for "inline"
 .form-group {
 display: inline-block;
 margin-bottom: 0;
 vertical-align: middle;
 }

 // In navbar-form, allow folks to *not* use `.form-group`
 .form-control {
 display: inline-block;
 width: auto; // Prevent labels from stacking above inputs in `.form-group`
 vertical-align: middle;
 }

 // Make static controls behave like regular ones
 .form-control-static {
 display: inline-block;
 }

 .input-group {
 display: inline-table;
 vertical-align: middle;

 .input-group-addon,
 .input-group-btn,
 .form-control {
 width: auto;
 }
 }

 // Input groups need that 100% width though
 .input-group > .form-control {
 width: 100%;
 }

 .control-label {
 margin-bottom: 0;
 vertical-align: middle;
 }

 // Remove default margin on radios/checkboxes that were used for stacking, and
 // then undo the floating of radios and checkboxes to match.
 .radio,
 .checkbox {
 display: inline-block;
 margin-top: 0;
 margin-bottom: 0;
 vertical-align: middle;

 label {
 padding-left: 0;
 }
 }
 .radio input[type="radio"],
 .checkbox input[type="checkbox"] {
 position: relative;
 margin-left: 0;
 }

 // Re-override the feedback icon.
 .has-feedback .form-control-feedback {
 top: 0;
 }
 }
}


// Horizontal forms
//
// Horizontal forms are built on grid classes and allow you to create forms with
// labels on the left and inputs on the right.

.form-horizontal {

 // Consistent vertical alignment of radios and checkboxes
 //
 // Labels also get some reset styles, but that is scoped to a media query below.
 .radio,
 .checkbox,
 .radio-inline,
 .checkbox-inline {
 margin-top: 0;
 margin-bottom: 0;
 padding-top: (@padding-base-vertical + 1); // Default padding plus a border
 }
 // Account for padding we're adding to ensure the alignment and of help text
 // and other content below items
 .radio,
 .checkbox {
 min-height: (@line-height-computed + (@padding-base-vertical + 1));
 }

 // Make form groups behave like rows
 .form-group {
 .make-row();
 }

 // Reset spacing and right align labels, but scope to media queries so that
 // labels on narrow viewports stack the same as a default form example.
 @media (min-width: @screen-sm-min) {
 .control-label {
 text-align: right;
 margin-bottom: 0;
 padding-top: (@padding-base-vertical + 1); // Default padding plus a border
 }
 }

 // Validation states
 //
 // Reposition the icon because it's now within a grid column and columns have
 // `position: relative;` on them. Also accounts for the grid gutter padding.
 .has-feedback .form-control-feedback {
 right: (@grid-gutter-width / 2);
 }

 // Form group sizes
 //
 // Quick utility class for applying `.input-lg` and `.input-sm` styles to the
 // inputs and labels within a `.form-group`.
 .form-group-lg {
 @media (min-width: @screen-sm-min) {
 .control-label {
 padding-top: ((@padding-large-vertical * @line-height-large) + 1);
 }
 }
 }
 .form-group-sm {
 @media (min-width: @screen-sm-min) {
 .control-label {
 padding-top: (@padding-small-vertical + 1);
 }
 }
 }
}