/*
 * Copyright (C) 2022 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

body {
    /* PDF.js variables */
    --body-bg-color: rgb(128, 128, 128);
    --scrollbar-color: auto;
    --scrollbar-bg-color: auto;

    /* Variables from WKPDFHUDView.mm */
    --layerVerticalOffset: 40px;
    --layerCornerRadius: 12px;
    --layerGrayComponent: 0%;
    --layerAlpha: 0.75;
    --layerImageScale: 1.5;
    --layerSeperatorControllerSize: 1.5px;
    --layerControllerHorizontalMargin: calc(10px * var(--layerImageScale));
    --layerImageVerticalMargin: 12px;
    --controlLayerNormalAlpha: 0.75;
    --controlLayerDownAlpha: 0.45;

    --layerFadeInTimeInterval: 0.25s;
    --layerFadeOutTimeInterval: 0.5s;
    --initialHideTimeInterval: 3s;
}

@keyframes fade-out {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

#loadingBar {
    display: none !important;
}

#toolbarContainer {
    display: contents;
}

#toolbarViewer {
    position: fixed;
    display: inline-flex;
    left: 0;
    right: 0;
    width: fit-content;
    height: auto;
    margin: auto;

    bottom: var(--layerVerticalOffset);
    padding: var(--layerImageVerticalMargin) var(--layerControllerHorizontalMargin);
    gap: var(--layerControllerHorizontalMargin);

    background-color: hsla(0, 0%, var(--layerGrayComponent), var(--layerAlpha));
    transition: var(--layerFadeInTimeInterval) opacity;
    opacity: 0;
    border-radius: var(--layerCornerRadius);
    animation-name: fade-out;
    animation-delay: var(--initialHideTimeInterval);
    animation-duration: var(--layerFadeOutTimeInterval);
    animation-fill-mode: backwards;
}

#toolbarViewer:hover {
    transition: var(--layerFadeOutTimeInterval) opacity;
    opacity: 1;
}

#toolbarViewerMiddle,
#toolbarViewerRight,
#toolbarViewerMiddle > .splitToolbarButton {
    display: contents;
}

#toolbarViewerLeft,
#toolbarViewerMiddle > *:not(.splitToolbarButton),
#toolbarViewerRight > *:not(#download) {
    display: none !important;
}

#toolbarViewer .toolbarButton {
    width: calc(20px * var(--layerImageScale));
    height: calc(20px * var(--layerImageScale));
    padding: 0;
    background-color: transparent;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    opacity: var(--controlLayerNormalAlpha);
}

#toolbarViewer .toolbarButton:active {
    opacity: var(--controlLayerDownAlpha);
}

#toolbarViewer .toolbarButton::before {
    display: none !important;
}

#zoomOut {
    order: 1;
    background-image: url("./minus.magnifyingglass@2x.png");
}

#zoomIn {
    order: 2;
    background-image: url("./plus.magnifyingglass@2x.png");
}

#zoomOut + .splitToolbarButtonSeparator {
    order: 3;
    background-color: white;
    opacity: 0.45;
    width: var(--layerSeperatorControllerSize);
    margin-top: -1px;
    margin-bottom: -1px;
}

#download {
    order: 4;
    background-image: url("./arrow.down.circle@2x.png");
    display: block !important;
}

#viewerContainer {
    top: 0;
}

/* Restyle PDF form fields */

.annotationLayer :is(
    .textWidgetAnnotation input,
    .textWidgetAnnotation textarea,
    .choiceWidgetAnnotation select,
    .buttonWidgetAnnotation.checkBox input,
    .buttonWidgetAnnotation.radioButton input,
):not(:hover) {
    --annotation-unfocused-field-background: none;
}

.annotationLayer :is(
    .textWidgetAnnotation input,
    .textWidgetAnnotation textarea,
    .choiceWidgetAnnotation select,
    .buttonWidgetAnnotation.checkBox input,
    .buttonWidgetAnnotation.radioButton input,
):hover {
    border-color: transparent;
}

.annotationLayer :is(
    .textWidgetAnnotation input,
    .textWidgetAnnotation textarea,
    .choiceWidgetAnnotation select,
    .buttonWidgetAnnotation.checkBox input,
    .buttonWidgetAnnotation.radioButton input,
):focus {
    --annotation-unfocused-field-background: none;
    outline: -webkit-focus-ring-color 2px solid;
    outline-offset: 2px;
}

/* Restyle the findbar */

#findbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    margin: 0;
    display: flex;
    flex-direction: row-reverse;
    background: var(--body-bg-color);
    border-radius: 0;
    box-shadow: none;

    --main-color: rgba(249, 249, 250, 1);

    --field-color: inherit;
    --field-bg-color: rgba(0, 0, 0, 0.1);
    --field-border-color: rgba(255,255,255,0.45);
    --findbar-nextprevious-btn-bg-color: transparent;

    --toggled-btn-color: rgba(255, 255, 255, 1);
    --toggled-btn-bg-color: rgba(0, 0, 0, 0.3);
    --button-hover-color: rgba(102, 102, 103, 1);
    --toggled-hover-active-btn-color: rgba(0, 0, 0, 0.4);

    --toolbar-icon-bg-color: rgba(255, 255, 255, 1);
    --toolbar-icon-hover-bg-color: rgba(255, 255, 255, 1);
}

#findbar:not(.hidden) ~ #viewerContainer {
    top: 32px;
}

#findbar::before,
#findbar::after {
    display: none;
}

#findbarOptionsTwoContainer {
    display: contents;
}

#findResultsCount,
#findMsg {
    background-color: transparent !important;
    color: inherit !important;
}

#findbar .splitToolbarButton > .toolbarButton::before {
    rotate: -90deg;
    top: 4px;
}

#findInput:focus {
    border-color: rgba(0, 103, 244, 0.48);
    outline: 2px solid rgba(0, 103, 244, 0.48);
}

#findInput[data-status="notFound"] {
    background: var(--field-bg-color);
    color: var(--field-color);
}
