/* global parameters */
#card {
	--max-column-width: 30em; /* max column width for text (~30 kana / ~50 latin characters) */
	--spoiler-transition: calc(300ms * var(--global-transition-scale)); /* spoiler hide/unhide transition duration */
	--tag-transition: calc(300ms * var(--global-transition-scale)); /* tag hover/tap expand transition duration */
	--separator-opacity: 20%; /* opacity of the answer separator */
	--separator-weight: 2px; /* layout-dependent width/height of separator */
	--spoiler-blur-padding: 4px; /* padding for the spoiler blur box */
	--text-block-padding: 1em; /* layout-dependent horizontal/vertical padding for text blocks  */
	--text-block-margin: 0.5em; /* layout-dependent horizontal/vertical margin for text blocks */
	--tag-font-size: 80%; /* font size for card tags */
	--subtile-font-size: 75%; /* font size for subtile style (notes, curly braces in translations) */
	--subtile-opacity: 50%; /* font opacity for subtile style */
	--reading-kana-font-size: var(--native-font-size); /* font size of kana in reading field */
	--native-font-size: 1.0rem; /* font size for generic native (latin) text */
	--foreign-font-size: 1.5rem; /* font size for generic foreign (japanese) text */
	--definition-spacing: 0.25em; /* definition spacing (mobile vertical only) */
	--definition-marker-width: 2em; /* definition marker width (mobile vertical only) */
	--definition-marker-height: 2px; /* definition marker height (mobile vertical only) */
	--definition-marker-opacity: 50%; /* definition marker opacity (mobile vertical only) */
	--indicator-stroke-weight: 1px; /* pitch accent / word type indicator stroke weight */
	--sentence-highlight-contrast: 80%; /* opacity of non-highlighted text in sentence */
	--global-transition-scale: 1.0; /* transition duration multiplier */
	--indicator-opacity: 50%; /* opacity of indicators in translations (word type) */
	--pitch-accent-opacity: 70%; /* opacity of pitch accent indicator in reading field */
	--reading-expand-transition: calc(300ms * var(--global-transition-scale)); /* hover expand transition duration for multiple readings */
	--active-detransition: calc(150ms * var(--global-transition-scale));

	/* colors */
	--fg: canvastext;
	--fg-alt: buttonface;
	--bg: canvas;
	--bg-alt: buttontext;
}
.mobile #card {
	--text-block-padding: 0.5em;
	--native-font-size: 1.10rem;
	--foreign-font-size: 1.75rem;
}

/* no transitions (accessibility) */
@media (prefers-reduced-motion) {
	#card {
		--global-transition-scale: 0;
	}
}
/* high-contrast (accessibility) */
@media (prefers-contrast: more) {
	.spoiler.hidden .inner { opacity: 100% !important; }
	.spoiler.hidden .outer::after { opacity: 40% !important; }

	.spoiler:not(.inline) .outer,
	.spoiler.inline { border: 2px solid currentColor; }
	.spoiler.inline { margin: -2px; }

	.subtile::before { content: "("; }
	.subtile::after { content: ")"; }

	#card {
		--subtile-opacity: 100%;
		--separator-opacity: 100%;
		--separator-weight: 4px;
		--indicator-opacity: 100%;
		--sentence-highlight-contrast: 100%;
		--pitch-accent-opacity: 100%;
	}
	.night_mode #target-word-reading .indicator::before {
		background-color: transparent !important;
		box-shadow: inset 0 0 0 2px currentColor;
		opacity: 100% !important;
	}

	#card #back #tags { opacity: 1 !important; }
	#tags .tag { background-color: currentColor !important; }
	#tags .tag .inner { padding-left: 0; }
	#card #back #tags:active .tag .inner,
	#card #back #tags:hover .tag .inner { padding-left: 1em; }
	#tags .tag .inner:before { background: var(--tag-color-dark); }
	.night_mode #tags .tag .inner:before { background: var(--tag-color-light); }
	#tags .tag .inner:before {
		position: absolute;
		left: 0.25em;
		top: 50%;
		content: "";
		width: 1em;
		height: 1em;
		border-radius: 99999px;
		transform: translate(-50%,-50%);
	}
}

/* default fonts */
body {
	font-family: "Inter", "Hiragino Kaku Gothic ProN", sans-serif;
	font-weight: 400;
}

/* increase contrast of highlighted word */
#card #sentence.has-b > * { opacity: var(--sentence-highlight-contrast); }
#card #sentence.has-b > b { opacity: 100%; }

/* body margin */
body {
	margin: 0;
	width: 100vw;
	height: 100vh;
}
/* remove AnkiDroid margin (causes little overscroll) */
.mobile #content { margin: 0; }

/* vertical center card in body */
body {
	display: flex;
	flex-direction: column;
	justify-content: center;
}

/* default font sizes (desktop) */
#card .foreign { font-size: var(--foreign-font-size); }
#card .native { font-size: var(--native-font-size); }

/* default text alignment and layout */
#card { text-align: center; }
#card > * > span { display: block; }

/* separator defaults */
#separator {
	border: none;
	opacity: var(--separator-opacity);
	margin: 0;
	background-color: currentColor;
}

/* separator size */
#card.horizontal-layout #separator { height: var(--separator-weight); }
#card.vertical-layout #separator { width: var(--separator-weight); }

/* hide answer and separator on card front */
#card.front #back,
#card.front hr { display: none !important; }

/* hide furigana but don't shift layout */
#card.front ruby rt.hidden { visibility: hidden; }

/* don't select furigana when selecting text */
rt { user-select: none; }

/* extra space above complete translated sentence */
#card #back #sentence-translation { margin-top: 2em; }

/* blur spoiler */
.spoiler { cursor: pointer; }
.spoiler .outer {
	margin: 0 auto;
	display: inline-block;
	position: relative;
	border-radius: 8px;
	overflow: hidden;
	padding: var(--spoiler-blur-padding);
}
.spoiler .outer::after {
	content: "";
	position: absolute;
	inset: 0;
	background-color: gray;
}
.spoiler .inner {
	transition-property: filter, opacity;
	transition-duration: var(--spoiler-transition);
}
.spoiler.hidden .inner { filter: blur(0.6rem); opacity: 75%; }
.spoiler.visible .inner { filter: blur(0rem); opacity: 100%; }
.spoiler .outer::after { transition: opacity var(--spoiler-transition); }
.spoiler.hidden .outer::after { opacity: 25%; }
.spoiler.visible .outer::after { opacity: 0%; }

/* inline spoilers */
.spoiler.inline {
	overflow: hidden;
	border-radius: 4px;
	display: inline-block;
	vertical-align: text-bottom;
}
.spoiler.inline .outer {
	padding: 0;
	display: inline;
}

/* fill display horizontally or vertically */
#card.horizontal-layout { width: 100vw; }
#card.vertical-layout { height: 100vh; }

/* grid column layout for vertical card layout */
#card.vertical-layout > * { grid-row: 1; }
#card.vertical-layout {
	display: grid;
	grid-auto-columns: 1fr auto auto;
}
#card.vertical-layout #back { flex-direction: column; }
#card.vertical-layout #back,
#card.vertical-layout #front {
	display: flex;
	justify-content: center;
}

/* grid column settings */
#card.vertical-layout #back { grid-column: 1; }
#card.vertical-layout #separator { grid-column: 2; }
#card.vertical-layout #front { grid-column: 3; }

/* default text element spacing */
#card.horizontal-layout > * > span,
#card.vertical-layout > #back > span {
	padding: 0 var(--text-block-padding);
	margin: var(--text-block-margin) auto;
}
#card.vertical-layout #sentence {
	padding: var(--text-block-padding) 0;
	margin: auto var(--text-block-margin);
}

/* vertical japanese text only in sentence */
#card.vertical-layout #sentence { writing-mode: vertical-rl; }

/* max text column width (~30 characters in japanese, ~50 in latin) */
#card.vertical-layout > #front > #sentence { max-height: var(--max-column-width); }
#card.horizontal-layout > * > span,
#card.vertical-layout > #back > span {
	max-width: var(--max-column-width);
	margin-left: auto;
	margin-right: auto;
}

/* display kana reading smaller and below kanji in vertical layout */
#card.vertical-layout #target-word-reading .reading {
	display: block;
	font-size: var(--reading-kana-font-size);
}

/* tag container */
#card #back #tags {
	font-size: var(--tag-font-size);
	display: flex;
	justify-content: center;
	align-items: center;
	flex-wrap: wrap;
	gap: 4px;
	margin: 2em 0.5em 0.5em 0.5em;
	max-width: unset;
	padding: 10px;
	opacity: 60%;
	transition: opacity var(--tag-transition);
	line-height: 1.5;
}

/* tag style */
#card #back #tags .tag {
	--tag-color-light: hsl(calc(1deg * var(--tag-hue)), 60%, 20%);
	--tag-color-dark: hsl(calc(1deg * var(--tag-hue)), 65%, 80%);
}
#card #back #tags .tag { background-color: var(--tag-color-light); }
.night_mode #card #back #tags .tag { background-color: var(--tag-color-dark); }
#card #back #tags .tag .inner { color: canvas; }
#card #back #tags .tag {
	--tag-hue: 0;
	padding: 4px;
	border-radius: 999px;
	margin: 0;
	transition-property: padding, grid-template-rows, grid-template-columns;
	transition-duration: var(--tag-transition);
	overflow: hidden;
	display: grid;
	grid-template-rows: 0fr;
	grid-template-columns: 0fr;
	justify-content: center;
	align-items: center;
	align-content: center;
}
#card #back #tags .tag .inner {
	position: relative;
	opacity: 0;
	transition-duration: var(--tag-transition);
	transition-property: opacity, padding;
	white-space: nowrap;
	min-height: 0;
	min-width: 0;
	display: flex;
	justify-content: center;
	cursor: default;
}

/* tag hover/hold expand */
#card #back #tags:active,
#card #back #tags:hover { opacity: 1; }
#card #back #tags:active .tag .inner,
#card #back #tags:hover .tag .inner { opacity: 1; }
#card #back #tags:active .tag,
#card #back #tags:hover .tag {
	grid-template-rows: 1fr;
	grid-template-columns: 1fr;
	padding: 4px 12px;
}

/* display tags vertically on mobile */
.mobile #card.vertical-layout #back #tags { flex-direction: column; }
.mobile #card.vertical-layout #back #tags .tag { max-width: max-content; }

/* make sure to hide empty fields */
.parse.empty { display: none !important; }

/* don't break syllables in the reading field */
#card #back #target-word-reading .kanji .writing,
#card #back #target-word-reading .reading .syllable { white-space: nowrap; }

/* subtile style */
.subtile {
	font-style: italic;
	opacity: var(--subtile-opacity);
	font-size: var(--subtile-font-size);
	vertical-align: baseline;
}
.subtile .script-japanese { font-style: normal; } /* italic japanese looks weird */

/* word note style */
#card #target-word-reading .note {
	line-height: 0;
	margin: 0;
	margin-top: 1em;
	margin-right: 0.25em;
}
.mobile #card.vertical-layout #target-word-reading .note {
	margin: 0;
	margin-bottom: 0.5em;
}
.mobile #card.vertical-layout #target-word-reading .kanji { display: flex; }

/* definitions */
#card #target-word-translation .definitions {
	display: inline;
	padding: 0;
}
#card #target-word-translation .definitions .definition,
#card #target-word-translation .definitions .definition-separator {
	list-style: none;
	display: inline;
}

#card #target-word-translation .definitions.showcomma .definition-separator::after { content: ", "; }

/* mobile definitions style */
.mobile #card.vertical-layout #target-word-translation .definitions {
	display: flex;
	flex-direction: column;
	align-items: center;
}
.mobile #card.vertical-layout #target-word-translation .definitions .definition-separator::after { content: ""; }
.mobile #card.vertical-layout #target-word-translation .definitions .definition-separator {
	height: var(--definition-marker-height);
	width: var(--definition-marker-width);
	opacity: var(--definition-marker-opacity);
	border-radius: 999px;
	background-color: currentColor;
	margin: var(--definition-spacing) 0;
}

/* indicator (word type + defaults) */
.indicator {
	position: relative;
	display: inline-block;
	margin: 0.25em;
	border: var(--indicator-stroke-weight) solid transparent;
}
.indicator::after {
	content: "";
	position: absolute;
	inset: calc(-1 * var(--indicator-stroke-weight));
	border-radius: 4px;
	border: var(--indicator-stroke-weight) solid currentColor;
	z-index: -1;
}
.indicator .script-japanese { font-size: 90%; }
.indicator .content,
.indicator .stamp { display: inline-block; }
.indicator .content { margin: 1px 4px; }
.indicator .stamp {
	position: relative;
	min-width: calc(1lh - 4px);
	padding: 2px 4px;
	margin: 1px;
	font-weight: bold;
	font-size: 90%;
	height: 100%;
}
.indicator .stamp::before {
	content: "";
	position: absolute;
	inset: 0;
	border-radius: 2px;
	z-index: -1;
}
.indicator .stamp * {
	display: inline-block;
}

/* indicator (pitch accent pattern) */
#target-word-reading .indicator::after { border: none; }
#target-word-reading .indicator {
	--pitch-accent-padding: 4px;
	position: relative;
	font-size: 80%;
	font-weight: bold;
	width: calc(1em + var(--pitch-accent-padding));
	height: calc(1em + var(--pitch-accent-padding));
	display: inline-flex;
	align-items: center;
	justify-content: center;
}
#target-word-reading .indicator::before {
	border-radius: 6px;
	content: "";
	z-index: -1;
	position: absolute;
	inset: 0;
	opacity: var(--pitch-accent-opacity);
}

/* theme colors */
#target-word-reading .indicator .content,
.indicator .stamp span { color: canvas; }
.night_mode #target-word-reading .indicator .content,
.night_mode .indicator .stamp span { color: currentColor; }
.indicator .stamp::before,
#target-word-reading .indicator::before { background-color: currentColor; }
.night_mode #target-word-translation .indicator .stamp::before,
.night_mode #target-word-reading .indicator::before {
	opacity: calc(0.45 * var(--pitch-accent-opacity));
}

/* grey color in definitions */
#target-word-translation .indicator .stamp::before,
#target-word-translation .indicator > *:not(.stamp),
#target-word-translation .indicator::after { opacity: var(--indicator-opacity); }

/* collapse kanji with multiple writings */
#back .kanji {
	position: relative;
	display: inline-flex;
	flex-direction: row;
	--writing-padding: 4px;
	--writing-margin: 4px;
}
#back .kanji .extra-writings .extra-count {
	transition-property: opacity;
	transition-duration: var(--reading-expand-transition);
	opacity: 1;
	font-size: 75%;
	font-weight: bold;
	user-select: none;
}
#back .kanji .extra-writings {
	transition-property: padding, gap;
	gap: 0px;
	transition-duration: var(--reading-expand-transition);
	position: relative;
	padding: 0 1em;
	align-items: center;
	cursor: text;
}
#back .kanji .extra-writings::after {
	content: "";
	position: absolute;
	border-radius: 0.5em;
	background-color: currentColor;
	transition-property: width, height, opacity;
	transition-duration: var(--reading-expand-transition);
	opacity: 15%;
	top: 50%;
	left: 50%;
	height: 1em;
	width: 1.5em;
	transform: translate(-50%, -50%);
	z-index: -1;
}
#back .kanji .extra-writings .writing-separator,
#back .kanji .extra-writings .writing {
	margin: 0;
	position: relative;
	overflow: hidden;
	transition-property: padding, margin, grid-template-rows, grid-template-columns;
	transition-duration: var(--reading-expand-transition);
	width: max-content;
	display: grid;
	align-items: center;
	justify-content: center;
	align-content: center;
	grid-template-rows: 1fr;
	grid-template-columns: 0fr;
}
#back .kanji .extra-writings .writing-separator .inner,
#back .kanji .extra-writings .writing .inner {
	min-height: 0;
	min-width: 0;
	transition: opacity var(--reading-expand-transition);
	opacity: 0;
	display: flex;
	justify-content: center;
}
#back .kanji .extra-writings .writing::after {
	content: "";
	position: absolute;
	inset: 0;
	background-color: currentColor;
	transition: opacity var(--reading-expand-transition);
	opacity: 0;
	border-radius: 8px;
}
.extra-count {
	position: absolute;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
}
#back .kanji .extra-writings {
	position: relative;
	display: inline-flex;
	border-radius: 8px;
	padding: 0 20px;
}

/* multiple writings hover/hold expand */
#back #target-word-reading:hover .kanji .extra-writings .writing,
#back #target-word-reading:hover .kanji .extra-writings .writing-separator { grid-template-columns: 1fr; }
#back #target-word-reading:hover .kanji .extra-writings .extra-count { opacity: 0; }
#back #target-word-reading:hover .kanji .extra-writings .writing .inner,
#back #target-word-reading:hover .kanji .extra-writings .writing-separator .inner { opacity: 1; }
#back #target-word-reading:hover .kanji .extra-writings { padding: 0; }
#back #target-word-reading:hover .kanji .extra-writings::after {
	width: 100%;
	height: 100%;
	opacity: 0;
}

/* multiple writings as tags (vertical mobile layout only) */
.mobile #card.vertical-layout #back #target-word-reading:hover .kanji .extra-writings .writing::after { opacity: 20%; }
.mobile #card.vertical-layout #back .kanji,
.mobile #card.vertical-layout #back .kanji .extra-writings { flex-direction: column; }
.mobile #card.vertical-layout #back .kanji .extra-writings { padding: 0.5em 0; }
.mobile #card.vertical-layout #back #target-word-reading:hover .kanji .extra-writings { padding: 0; }
.mobile #card.vertical-layout #back .kanji .extra-writings .writing { grid-template-rows: 0fr; }
.mobile #card.vertical-layout #back #target-word-reading:hover .kanji .extra-writings .writing { grid-template-rows: 1fr; }
.mobile #card.vertical-layout #back .kanji .writing-separator { display: none; }
.mobile #card.vertical-layout #back #target-word-reading:hover .kanji .extra-writings .writing { padding: 0 var(--writing-padding); }
.mobile #card.vertical-layout #back #target-word-reading:hover .kanji .extra-writings { gap: var(--writing-margin); }

/* vertical align for target-word-reading parts */
#card.horizontal-layout #target-word-reading > * {
	vertical-align: middle;
}

/* mobile tap highlight */
.mobile #card * { -webkit-tap-highlight-color: transparent; }
.mobile #card #sentence-translation .outer,
.mobile #card #audio svg {
	box-shadow: 0 0 0 0px currentColor;
	transition-property: box-shadow;
	transition-duration: var(--active-detransition);
}
.mobile #card #sentence-translation .outer:active,
.mobile #card #audio:active svg {
	box-shadow: 0 0 0 2px currentColor;
	transition-duration: 0ms;
}

#card { color-scheme: light; }
.night_mode #card { color-scheme: dark; }

/* horizontal numbers and punctuation in single kana space in vertical japanese */
#card.vertical-layout #sentence .horizontal-in-vertical { text-combine-upright: all; }

/* make elements within this class display on one line */
.vertical-layout .flex-line { flex-direction: column; }
.horizontal-layout .flex-line { flex-direction: row; }
.flex-line {
	display: flex !important;
	flex-wrap: wrap;
	align-items: center;
	justify-content: center;
	gap: 0;
}

/* display:none utility class */
.display-none { display: none; }

/* play audio button size */
.mobile .replay-button svg {
	width: 48px !important;
	height: 48px !important;
}
.replay-button svg {
	width: 24px !important;
	height: 24px !important;
	border-radius: 25%; /* display rounded tap highlight on mobile */
}

/* maximize size of touch target (for mobile) */
.replay-button {
	margin: 0px !important;
	padding: 6px; /* max allowed padding w/o changing page layout */
	color: var(--fg);
}
/* force play icon to be same as text color */
.replay-button svg path {
	fill: currentColor !important;
}