//
// Load core variables and mixins
// --------------------------------------------------

@import "variables.less";
@import "mixins.less";


//
// Buttons
// --------------------------------------------------

// Common styles
.btn-default,
.btn-primary,
.btn-success,
.btn-info,
.btn-warning,
.btn-danger {
    text-shadow: 0 -1px 0 rgba(0,0,0,.2);
    @shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 1px rgba(0,0,0,.075);
    .box-shadow(@shadow);

    // Reset the shadow
    &:active,
        &.active {
        .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
    }

    .badge {
        text-shadow: none;
    }
}

// Mixin for generating new styles
.btn-styles(@btn-color: #555) {
    #gradient > .vertical(@start-color: @btn-color; @end-color: darken(@btn-color, 12%));
    .reset-filter(); // Disable gradients for IE9 because filter bleeds through rounded corners
    background-repeat: repeat-x;
    border-color: darken(@btn-color, 14%);

    &:hover,
        &:focus  {
        background-color: darken(@btn-color, 12%);
        background-position: 0 -15px;
    }

    &:active,
        &.active {
        background-color: darken(@btn-color, 12%);
        border-color: darken(@btn-color, 14%);
    }

    &:disabled,
        &[disabled] {
        background-color: darken(@btn-color, 12%);
        background-image: none;
    }
}

// Common styles
.btn {
    // Remove the gradient for the pressed/active state
    &:active,
        &.active {
        background-image: none;
    }
}

// Apply the mixin to the buttons
.btn-default { .btn-styles(@btn-default-bg); text-shadow: 0 1px 0 #fff; border-color: #ccc; }
.btn-primary { .btn-styles(@btn-primary-bg); }
.btn-success { .btn-styles(@btn-success-bg); }
.btn-info    { .btn-styles(@btn-info-bg); }
.btn-warning { .btn-styles(@btn-warning-bg); }
.btn-danger  { .btn-styles(@btn-danger-bg); }


//
// Images
// --------------------------------------------------

.thumbnail,
.img-thumbnail {
    .box-shadow(0 1px 2px rgba(0,0,0,.075));
}


//
// Dropdowns
// --------------------------------------------------

.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus {
    #gradient > .vertical(@start-color: @dropdown-link-hover-bg; @end-color: darken(@dropdown-link-hover-bg, 5%));
    background-color: darken(@dropdown-link-hover-bg, 5%);
}
.dropdown-menu > .active > a,
.dropdown-menu > .active > a:hover,
.dropdown-menu > .active > a:focus {
    #gradient > .vertical(@start-color: @dropdown-link-active-bg; @end-color: darken(@dropdown-link-active-bg, 5%));
    background-color: darken(@dropdown-link-active-bg, 5%);
}


//
// Navbar
// --------------------------------------------------

// Default navbar
.navbar-default {
    #gradient > .vertical(@start-color: lighten(@navbar-default-bg, 10%); @end-color: @navbar-default-bg);
    .reset-filter(); // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered
    border-radius: @navbar-border-radius;
    @shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 5px rgba(0,0,0,.075);
    .box-shadow(@shadow);

    .navbar-nav > .open > a,
    .navbar-nav > .active > a {
        #gradient > .vertical(@start-color: darken(@navbar-default-link-active-bg, 5%); @end-color: darken(@navbar-default-link-active-bg, 2%));
        .box-shadow(inset 0 3px 9px rgba(0,0,0,.075));
    }
}
.navbar-brand,
.navbar-nav > li > a {
    text-shadow: 0 1px 0 rgba(255,255,255,.25);
}

// Inverted navbar
.navbar-inverse {
    #gradient > .vertical(@start-color: lighten(@navbar-inverse-bg, 10%); @end-color: @navbar-inverse-bg);
    .reset-filter(); // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered

    .navbar-nav > .open > a,
    .navbar-nav > .active > a {
        #gradient > .vertical(@start-color: @navbar-inverse-link-active-bg; @end-color: lighten(@navbar-inverse-link-active-bg, 2.5%));
        .box-shadow(inset 0 3px 9px rgba(0,0,0,.25));
    }

    .navbar-brand,
    .navbar-nav > li > a {
        text-shadow: 0 -1px 0 rgba(0,0,0,.25);
    }
}

// Undo rounded corners in static and fixed navbars
.navbar-static-top,
.navbar-fixed-top,
.navbar-fixed-bottom {
    border-radius: 0;
}

// Fix active state of dropdown items in collapsed mode
@media (max-width: @grid-float-breakpoint-max) {
    .navbar .navbar-nav .open .dropdown-menu > .active > a {
        &,
        &:hover,
            &:focus {
            color: #fff;
            #gradient > .vertical(@start-color: @dropdown-link-active-bg; @end-color: darken(@dropdown-link-active-bg, 5%));
        }
    }
}


//
// Alerts
// --------------------------------------------------

// Common styles
.alert {
    text-shadow: 0 1px 0 rgba(255,255,255,.2);
    @shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 1px 2px rgba(0,0,0,.05);
    .box-shadow(@shadow);
}

// Mixin for generating new styles
.alert-styles(@color) {
    #gradient > .vertical(@start-color: @color; @end-color: darken(@color, 7.5%));
    border-color: darken(@color, 15%);
}

// Apply the mixin to the alerts
.alert-success    { .alert-styles(@alert-success-bg); }
.alert-info       { .alert-styles(@alert-info-bg); }
.alert-warning    { .alert-styles(@alert-warning-bg); }
.alert-danger     { .alert-styles(@alert-danger-bg); }


//
// Progress bars
// --------------------------------------------------

// Give the progress background some depth
.progress {
    #gradient > .vertical(@start-color: darken(@progress-bg, 4%); @end-color: @progress-bg)
}

// Mixin for generating new styles
.progress-bar-styles(@color) {
    #gradient > .vertical(@start-color: @color; @end-color: darken(@color, 10%));
}

// Apply the mixin to the progress bars
.progress-bar            { .progress-bar-styles(@progress-bar-bg); }
.progress-bar-success    { .progress-bar-styles(@progress-bar-success-bg); }
.progress-bar-info       { .progress-bar-styles(@progress-bar-info-bg); }
.progress-bar-warning    { .progress-bar-styles(@progress-bar-warning-bg); }
.progress-bar-danger     { .progress-bar-styles(@progress-bar-danger-bg); }

// Reset the striped class because our mixins don't do multiple gradients and
// the above custom styles override the new `.progress-bar-striped` in v3.2.0.
.progress-bar-striped {
    #gradient > .striped();
}


//
// List groups
// --------------------------------------------------

.list-group {
    border-radius: @border-radius-base;
    .box-shadow(0 1px 2px rgba(0,0,0,.075));
}
.list-group-item.active,
.list-group-item.active:hover,
.list-group-item.active:focus {
    text-shadow: 0 -1px 0 darken(@list-group-active-bg, 10%);
    #gradient > .vertical(@start-color: @list-group-active-bg; @end-color: darken(@list-group-active-bg, 7.5%));
    border-color: darken(@list-group-active-border, 7.5%);

    .badge {
        text-shadow: none;
    }
}


//
// Panels
// --------------------------------------------------

// Common styles
.panel {
    .box-shadow(0 1px 2px rgba(0,0,0,.05));
}

// Mixin for generating new styles
.panel-heading-styles(@color) {
    #gradient > .vertical(@start-color: @color; @end-color: darken(@color, 5%));
}

// Apply the mixin to the panel headings only
.panel-default > .panel-heading   { .panel-heading-styles(@panel-default-heading-bg); }
.panel-primary > .panel-heading   { .panel-heading-styles(@panel-primary-heading-bg); }
.panel-success > .panel-heading   { .panel-heading-styles(@panel-success-heading-bg); }
.panel-info > .panel-heading      { .panel-heading-styles(@panel-info-heading-bg); }
.panel-warning > .panel-heading   { .panel-heading-styles(@panel-warning-heading-bg); }
.panel-danger > .panel-heading    { .panel-heading-styles(@panel-danger-heading-bg); }


//
// Wells
// --------------------------------------------------

.well {
    #gradient > .vertical(@start-color: darken(@well-bg, 5%); @end-color: @well-bg);
    border-color: darken(@well-bg, 10%);
    @shadow: inset 0 1px 3px rgba(0,0,0,.05), 0 1px 0 rgba(255,255,255,.1);
    .box-shadow(@shadow);
}