/* ==========================================================================
   Signal Theme - syntax.css
   PrismJS カスタムテーマ（One Dark Pro ベース）
   ========================================================================== */

/* コードブロックラッパー */
.code-block-wrapper {
	position: relative;
	margin: 1.75em 0;
	border-radius: var(--radius-md);
	overflow: hidden;
	background: var(--color-code-bg);
	box-shadow: var(--shadow-md);
}

/* ヘッダーバー（言語名 + コピーボタン） */
.code-block-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.4rem 1rem;
	background: rgba(255, 255, 255, 0.04);
	border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.code-block-lang {
	font-family: var(--font-mono);
	font-size: 0.72rem;
	color: rgba(226, 232, 240, 0.5);
	text-transform: lowercase;
	letter-spacing: 0.05em;
}

.code-copy-btn {
	display: inline-flex;
	align-items: center;
	gap: 0.3em;
	padding: 0.2em 0.6em;
	background: rgba(255, 255, 255, 0.08);
	border: 1px solid rgba(255, 255, 255, 0.1);
	border-radius: var(--radius-sm);
	font-family: var(--font-mono);
	font-size: 0.72rem;
	color: rgba(226, 232, 240, 0.7);
	cursor: pointer;
	transition: background 0.2s ease, color 0.2s ease;
}

.code-copy-btn:hover {
	background: rgba(0, 201, 167, 0.15);
	color: var(--color-accent);
	border-color: rgba(0, 201, 167, 0.3);
}

.code-copy-btn.copied {
	background: rgba(0, 201, 167, 0.2);
	color: var(--color-accent);
	border-color: var(--color-accent);
}

/* PrismJS コアスタイル上書き */
.code-block-wrapper pre[class*="language-"] {
	margin: 0;
	border-radius: 0;
	background: transparent;
	padding: 1.25rem 1.5rem;
	overflow-x: auto;
	tab-size: 2;
}

code[class*="language-"],
pre[class*="language-"] {
	font-family: var(--font-mono);
	font-size: 0.875rem;
	line-height: 1.75;
	color: #ABB2BF;
	direction: ltr;
	text-align: left;
	white-space: pre;
	word-spacing: normal;
	word-break: normal;
	-moz-tab-size: 2;
	tab-size: 2;
	-webkit-hyphens: none;
	hyphens: none;
}

/* ---- One Dark Pro トークン ---- */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
	color: #5C6370;
	font-style: italic;
}

.token.punctuation {
	color: #ABB2BF;
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol {
	color: #E06C75;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin {
	color: #98C379;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
	color: #56B6C2;
}

.token.atrule,
.token.attr-value,
.token.keyword {
	color: #C678DD;
}

.token.function,
.token.class-name {
	color: #61AFEF;
}

.token.regex,
.token.important,
.token.variable {
	color: #E5C07B;
}

.token.important,
.token.bold {
	font-weight: bold;
}

.token.italic {
	font-style: italic;
}

/* 行番号プラグイン */
pre.line-numbers {
	position: relative;
	padding-left: 3.8em;
	counter-reset: linenumber;
}

pre.line-numbers > code {
	position: relative;
	white-space: inherit;
}

.line-numbers .line-numbers-rows {
	position: absolute;
	pointer-events: none;
	top: 1.25rem;
	left: 0;
	width: 3em;
	letter-spacing: -1px;
	border-right: 1px solid rgba(255, 255, 255, 0.08);
	user-select: none;
}

.line-numbers-rows > span {
	display: block;
	counter-increment: linenumber;
}

.line-numbers-rows > span::before {
	content: counter(linenumber);
	color: rgba(171, 178, 191, 0.35);
	display: block;
	padding-right: 0.8em;
	text-align: right;
	font-size: 0.85em;
}

/* スクロールバーカスタマイズ（webkit） */
pre[class*="language-"]::-webkit-scrollbar {
	height: 5px;
}

pre[class*="language-"]::-webkit-scrollbar-track {
	background: rgba(255, 255, 255, 0.04);
}

pre[class*="language-"]::-webkit-scrollbar-thumb {
	background: rgba(255, 255, 255, 0.15);
	border-radius: 100px;
}