/* Study sheets (.tex pages rendered by Sajt's sheet parser) and the memo list.
 * Builds on all.css: same fonts, tokens and column. The colour classes mirror
 * printup-sheet.sty's palette (sheetBlue/Green/Brown/Orange/Red/Grey) so a
 * \textcolor on paper keeps its meaning on the web. */

/* ── the side panel: the memo filter ────────────────────────────────────── */

.side-filter {
	margin: 0;
}

/* the filter's fold: no label on a desktop (the panel is always open there);
   on a phone the same fold as the contents, labelled */
.side-fold {
	margin-top: 1.2rem;
}

.side-fold summary {
	display: none;
}

@media (max-width: 860px) {
	.side-fold summary {
		display: flex;
	}
}

.side-search {
	display: block;
	width: 100%;
	margin: 0.3rem 0 0.2rem;
	padding: 0.4rem 0.7rem;
	font: inherit;
	font-size: 0.95rem;
	border: 1px solid var(--border);
	border-radius: 8px;
	background: var(--surface);
	color: var(--text);
}

.side-search:focus {
	outline: 2px solid var(--accent);
	outline-offset: 1px;
	border-color: transparent;
}

/* all.css hides spans in the contents list (the old date column); the
   counts are wanted, right-aligned */
ul.posts.side-areas li span.count {
	display: inline;
	float: right;
	margin-left: 0.5rem;
	font-size: 0.78rem;
	font-weight: 500;
	color: var(--muted);
}

/* a selected area looks like the current page in the contents (the sidebar
   carries no tags — owner, 2026-09-29) */
ul.posts a.on {
	background: var(--accent);
	border-left-color: var(--accent);
	color: #fff;
}

ul.posts a.on .count {
	color: rgba(255, 255, 255, 0.85);
}

.side-apply {
	margin-top: 0.6rem;
	padding: 0.35rem 0.9rem;
	font: inherit;
	font-weight: 700;
	color: #fff;
	background: var(--accent);
	border: 0;
	border-radius: 8px;
}

/* ── the sheet page ─────────────────────────────────────────────────────── */

.sheet-kicker {
	margin: -0.4rem 0 0.8rem;
	font-size: 0.85rem;
	font-weight: 700;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--muted);
}

/* at the end of the sheet, after "Related" */
#post .sheet-meta {
	list-style: none;
	display: flex;
	flex-wrap: wrap;
	gap: 0.35rem;
	margin: 1rem 0 0;
	padding: 0;
}

/* not a list of points: no square markers, no running-text underline */
#post .sheet-meta li::before {
	display: none;
}

#post .sheet-meta a {
	text-decoration: none;
}

.sheet-meta li a,
.memos-chip {
	display: inline-block;
	padding: 0.1rem 0.55rem;
	border-radius: 999px;
	border: 1px solid var(--border);
	background: var(--surface);
	font-size: 0.82rem;
	font-weight: 600;
	line-height: 1.5;
	color: var(--muted);
	text-decoration: none;
}

.sheet-meta li.sheet-label a {
	border-color: rgba(10, 95, 214, 0.25);
	color: var(--accent-strong);
	background: var(--accent-soft);
}

.sheet-meta li a:hover,
.memos-chip:hover {
	border-color: var(--accent);
	color: var(--accent-strong);
	text-decoration: none;
}

.sheet-oneliner {
	padding: 0.7rem 1rem;
	border-left: 3px solid var(--accent);
	background: var(--accent-soft);
	border-radius: 0 var(--radius) var(--radius) 0;
}

.sheet-tools {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.4rem 1rem;
	margin: 0.8rem 0 1.6rem;
	font-weight: 600;
}

.sheet-download {
	padding: 0.35rem 0.9rem;
	border-radius: 8px;
	background: var(--accent);
	color: #fff !important;
	text-decoration: none !important;
}

.sheet-download:hover {
	background: var(--accent-strong);
}

.sheet-pages {
	color: var(--muted);
	font-weight: 500;
}

.sheet-section h2 {
	margin-top: 1.6em;
	font-size: 1.35rem;
}

.sheet-section h2:first-child {
	margin-top: 1.2em;
}

/* the sheets' own "\hd{…}" headings (a bold-only paragraph in the source) */
.sheet h3.sheet-hd {
	margin: 1.5em 0 0.4em;
	font-size: 1.2rem;
}

.sheet h3.sheet-hd span {
	color: inherit;
}

/* inline code sits in a lot of running text here: a touch smaller than in a note */
#post .sheet :not(pre) > code {
	font-size: 0.82em;
}

.sheet li.trap {
	list-style: none;
}

#post .sheet li.trap::before {
	content: "!";
	top: 0.2em;
	width: auto;
	height: auto;
	background: none;
	opacity: 1;
	font-weight: 700;
	color: var(--c-red);
}

.item-label {
	font-weight: 700;
	margin-right: 0.25em;
}

.sheet-figure {
	margin: 1rem 0 1.4rem;
	text-align: center;
}

.sheet-figure img {
	max-width: 100%;
	height: auto;
}

/* a picture drawn across the printed page fills the column here too; a
   small one keeps its printed size (tex.ts decides from the SVG's size) */
.sheet-figure img.wide {
	width: 100%;
}

.sheet-code {
	margin: 0.8em 0 1.2em;
}

.sheet-table {
	margin: 1em 0 1.4em;
}

.sheet-table td.b,
.sheet-table th.b {
	font-weight: 700;
}

.sheet-table td.center,
.sheet-table th.center {
	text-align: center;
}

.sheet-table td.right,
.sheet-table th.right {
	text-align: right;
}

.sheet-table code {
	white-space: normal;
}

.sheet-related {
	margin-top: 2rem;
	padding-top: 1rem;
	border-top: 1px solid var(--border);
	color: var(--muted);
	font-size: 0.95rem;
}

.sheet-related-label {
	font-weight: 700;
}

.unverified {
	font-size: 0.85em;
	font-style: italic;
	color: var(--c-orange);
}

.sheet-note {
	color: var(--muted);
	font-size: 0.9em;
}

.chip {
	display: inline-block;
	padding: 0 0.35em;
	border-radius: 4px;
	background: var(--code-bg);
}

.math {
	font-style: italic;
}

.math code {
	font-style: normal;
}

/* ── the paper palette on the web ───────────────────────────────────────── */

:root {
	--c-blue: #204a87;
	--c-green: #4e9a06;
	--c-brown: #8f5902;
	--c-orange: #ce5c00;
	--c-red: #b22222;
	--c-grey: #6b7280;
}

.c-sheetblue, .c-tangokeyword, .c-navyblue { color: var(--c-blue); }
.c-sheetgreen, .c-tangostring { color: var(--c-green); }
.c-sheetbrown, .c-tangocomment { color: var(--c-brown); }
.c-sheetorange, .c-tangooperator { color: var(--c-orange); }
.c-sheetred, .c-brickred, .c-red { color: var(--c-red); }
.c-sheetgrey, .c-gray, .c-grey, .c-black { color: var(--c-grey); }
.c-white { color: inherit; }

.chip.c-sheetblue { background: rgba(32, 74, 135, 0.08); }
.chip.c-sheetgreen { background: rgba(78, 154, 6, 0.1); }
.chip.c-sheetorange { background: rgba(206, 92, 0, 0.1); }
.chip.c-sheetred { background: rgba(178, 34, 34, 0.08); }

/* ── the memo list ──────────────────────────────────────────────────────── */

/* what the side panel currently selects, above the list */
.memos-status {
	margin: 0 0 0.6rem;
	color: var(--muted);
	font-size: 0.9rem;
	font-weight: 600;
}

.memos-active {
	font-weight: 500;
}

.memos-area {
	margin-top: 1.8rem;
}

.memos-area h2 {
	margin: 0 0 0.4rem;
	font-size: 1.15rem;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--accent-strong);
}

#post ul.memos-list {
	list-style: none;
	padding: 0;
	margin: 0;
}

#post ul.memos-list > li {
	margin: 0;
	padding: 0.55rem 0;
	border-top: 1px solid var(--border);
}

#post ul.memos-list > li::before {
	display: none;
}

.memos-list a.memos-title {
	font-weight: 700;
	text-decoration: none;
}

.memos-list .memos-oneliner {
	margin: 0.1rem 0 0;
	color: var(--muted);
	font-size: 0.95rem;
}

.memos-list .memos-tags {
	margin: 0.2rem 0 0;
	font-size: 0.8rem;
	color: var(--muted);
}

/* #post underlines links in running text; a tag list is not that */
#post .memos-list .memos-tags a {
	color: var(--muted);
	text-decoration: none;
}

#post .memos-list .memos-tags a:hover {
	color: var(--accent-strong);
	text-decoration: underline;
}

.memos-list li.hidden,
.memos-area.hidden,
.memos-empty.hidden {
	display: none;
}

.memos-empty {
	color: var(--muted);
	font-style: italic;
}