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


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

.btn {
    display: inline-block;
    margin-bottom: 0; // For input.btn
    padding: 6px 12px;
    font-size: 1.4rem;
    line-height: 1.428571429;
    font-weight: normal;
    text-align: center;
    vertical-align: middle;
    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;
    border-radius: $rounded;
    @include user-select(none);

    &,
    &:active,
    &.active {
        &:focus {
            @include tab-focus();
        }
    }

    &:hover,
    &:focus {
        color: $blue;
        text-decoration: none;
    }

    &:active,
    &.active {
        outline: 0;
        background-image: none;
        box-shadow: inset 0 2px 2px rgba(0,0,0,.125);
    }

    &.disabled,
    &[disabled],
    fieldset[disabled] & {
        cursor: not-allowed;
        pointer-events: none; // Future-proof disabling of clicks
        opacity: 0.65;
        box-shadow: none;
    }
}


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

@mixin button-style($color, $background, $border) {
    color: $color;
    background-color: $background;
    border-color: $border;

    &:hover,
    &:focus,
    &:active,
    &.active,
    .open > &.dropdown-toggle {
        color: $color;
        background-color: darken($background, 10%);
        border-color: darken($border, 12%);
    }
    &:active,
    &.active,
    .open > &.dropdown-toggle {
        background-image: none;
    }
    &.disabled,
    &[disabled],
    fieldset[disabled] & {
        &,
        &:hover,
        &:focus,
        &:active,
        &.active {
            background-color: $background;
            border-color: $border;
        }
    }

    .badge {
        color: $background;
        background-color: $color;
    }
}

.btn-default {
    @include button-style($darkgrey, #fff, lighten($midgrey, 30%));
}
.btn-primary {
    @include button-style(#fff, $blue, darken($blue, 5%));
}
// Success appears as green
.btn-success {
    @include button-style(#fff, $green, darken($green, 5%));
}
// Danger and error appear as red
.btn-danger {
    @include button-style(#fff, $red, darken($red, 5%));
}


// Link buttons
// -------------------------

// Make a button look and behave like a link
.btn-link {
    color: $blue;
    font-weight: normal;
    cursor: pointer;
    border-radius: 0;

    &,
    &:active,
    &[disabled],
    fieldset[disabled] & {
        background-color: transparent;
        box-shadow: none;
    }
    &,
    &:hover,
    &:focus,
    &:active {
        border-color: transparent;
    }
    &:hover,
    &:focus {
        text-decoration: underline;
        background-color: transparent;
    }
    &[disabled],
    fieldset[disabled] & {
        &:hover,
        &:focus {
            color: $midgrey;
            text-decoration: none;
        }
    }
}


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

.btn-lg {
    padding: 10px 16px;
    font-size: 1.8rem;
    line-height: 1.33;
    border-radius: 4px;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 1.2rem;
    line-height: 1.5;
    border-radius: 2px;
}


// 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%;
    }
}


//
// Button Reset
// --------------------------------------------------

button {
    border: 0;
    padding: 0;
    background: transparent;
    @include transition(all 0.15s ease-in-out);
}


//
// Base Button
// --------------------------------------------------

%btn {
    min-height: 35px;
    width: auto;
    display: inline-block;
    padding: 0.9em 1.37em;

    text-decoration: none;
    color: #fff;
    font-size: 11px; // Hack because Firefox sucks.
    line-height: 13px; // Hack because Firefox sucks.
    font-weight: 300;
    text-align: center;
    letter-spacing: 1px;
    text-transform: uppercase;

    text-shadow: none;
    border-radius: 0.2em;
    border: rgba(0,0,0,0.05) 0.1em solid;

    @include transition(background 0.3s ease, border-color 0.3s ease);

    &:hover,
    &.hover,
    &:focus {
        will-change: border-color, background;
        border-color: transparent;
        background: #f8f8f8;
        text-decoration: none;
    }

    &:active {
        box-shadow: rgba(0,0,0,0.3) 0 1px 3px inset;
    }

    &:disabled {
        opacity: 0.5;
    }

    &.large {
        padding: 1em 1.8em;
        font-size: 14px;
        line-height: 16px;
    }

    // Styling for buttons with icons in them
    &[class*='icon-'] {
        position: relative;
        padding-left: calc(1.37em + 36px);
        &:before {
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            width: 35px;
            font-size: 13px;
            line-height: 35px;
            border-right: 1px solid rgba($darkgrey, 0.1);
            opacity: 0.95;
        }

        &.large {
            padding-left: calc(1.8em + 46px);
            &:before {
                width: 46px;
                line-height: 46px;
                font-size: 17px;
            }
        }

    }

}


// TODO: Find a better way of doing this?
[class*='button'] {
    &[class*='has-icon'] {
        padding-left: 0;
        [class*='icon-'] {
             margin-left: 11px;
            margin-right: 4px;
            &:before {
                font-size: 0.9rem;
            }
        }
    }
    &.only-has-icon {
        padding-right: 0;
        [class*='icon-'] {
            margin-right: 11px;
        }
    }
}


//
// The Buttons
// --------------------------------------------------

.button {
// button,
// input[type="button"] {
    @extend %btn;
    color:#777;
    font-weight: normal;
    background: #eee;
    box-shadow: none;
    &:hover,
    &:focus {
        border-color: rgba(0,0,0,0.1);
    }
}

.button-dark {
    @extend %btn;
    color: #fff;
    font-weight: normal;
    background: #A1ADB3;
    box-shadow: none;
    border-color: #A1ADB3;
    &:hover,
    &:focus {
        border-color: darken(#A1ADB3, 10%);
        background: darken(#A1ADB3, 10%);
    }
}

// Button for save/next/continue/confirm actions
.button-save {
// button[type="submit"],
// input[type="submit"] {
    @extend %btn;
    background: $blue;
    box-shadow: none;
    &:hover,
    &:focus {
        background: darken($blue, 10%);
    }
}

// Button for actions which add stuff
.button-add {
// button[type="submit"].button-add,
// input[type="submit"].button-add {
    @extend %btn;
    background: $green;
    &:hover,
    &:focus {
        background: darken($green, 8%);
    }
}

// Button for deleting/removing stuff
.button-delete {
// button[type="reset"],
// input[type="reset"] {
    @extend %btn;
    background: $red;
    box-shadow: none;
    &:hover,
    &:focus {
        background: darken($red, 10%);
    }
}

// Alternative button with more visual attention, 
// but no extra semantic meaning
.button-alt {
    @extend %btn;
    background: lighten($darkgrey, 10%);
    &:hover,
    &:focus {
        background: $darkgrey;
    }
    &[class*='icon-']:before {
        border-right-color: lighten($darkgrey, 10%);
    }
}

// Alternative button with more visual attention, but no extra semantic meaning
.button-info {
    @extend %btn;
    background: #A1ADB3;
    &:hover,
    &:focus {
        background: lighten(#A1ADB3, 10%);
    }
}

// This applies normal link styles to de-emphasise a button
.button-link {
    @extend %btn;
    color: $blue;
    background: transparent;
    border: none;
    &:hover,
    &:focus {
        background: transparent;
        text-decoration: underline;
    }
}

// Back button for pane animations
.button-back {
    @extend %btn;
    position: absolute;
    top: 20px;
    left: 20px;
    margin-right: 30px;
    padding: 0.5em 1.37em 0.5em 1.10em;
    display: none;
    color: #fff;
    background: $blue;
    border: none;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;

    &:before {
        content: ' ';
        position: absolute;
        top: 0;
        left: -10px;
        width: 0;
        height: 0;
        border-width: 18px 10px 18px 0;
        border-color: transparent $blue transparent transparent;
        border-style: solid solid solid none;
        @include transform(scale(0.9999));
        @include transition(border-color 0.3s ease);
    }

    &:hover,
    &:focus {
        color: #fff;
        background: darken($blue, 10%);
        border-color: darken($blue, 10%);
        &:before {
            border-right-color: darken($blue, 10%);
        }
    }

}