/* C++23 Course: designed to sit inside any theme. */
:root {
	--cpp23-accent: #2563eb;
	--cpp23-accent-soft: rgba(37, 99, 235, 0.08);
	--cpp23-ok: #15803d;
	--cpp23-ok-soft: rgba(21, 128, 61, 0.08);
	--cpp23-border: rgba(127, 127, 127, 0.28);
	--cpp23-muted: rgba(127, 127, 127, 0.95);
	--cpp23-radius: 8px;
}

/* ---------- Code ---------- */
.cpp23-lesson pre.cpp23-code,
.cpp23-forum-body pre.cpp23-code,
.comment-content pre.cpp23-code,
pre.cpp23-code {
	position: relative;
	margin: 1.25em 0;
	padding: 1em 1.1em;
	border-radius: var(--cpp23-radius);
	background: #1d1f21;
	color: #c5c8c6;
	font-size: 0.9em;
	line-height: 1.55;
	overflow-x: auto;
	white-space: pre;
}
pre.cpp23-code code {
	background: none;
	padding: 0;
	font-family: ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;
	color: inherit;
}
.cpp23-copy {
	position: absolute;
	top: 8px;
	right: 8px;
	padding: 3px 10px;
	border: 1px solid rgba(255, 255, 255, 0.25);
	border-radius: 5px;
	background: rgba(255, 255, 255, 0.08);
	color: #e5e7eb;
	font: 600 12px/1.4 system-ui, sans-serif;
	cursor: pointer;
}
.cpp23-copy:hover { background: rgba(255, 255, 255, 0.18); }

/* ---------- Lesson progress header ---------- */
.cpp23-lesson-progress {
	margin: 0 0 1.75em;
	padding: 0.85em 1em;
	border: 1px solid var(--cpp23-border);
	border-radius: var(--cpp23-radius);
}
.cpp23-lesson-progress__row {
	display: flex;
	justify-content: space-between;
	gap: 1em;
	font-size: 0.9em;
	margin-bottom: 0.5em;
}
.cpp23-bar {
	height: 6px;
	border-radius: 3px;
	background: var(--cpp23-border);
	overflow: hidden;
}
.cpp23-bar > span {
	display: block;
	height: 100%;
	background: var(--cpp23-ok);
	transition: width 0.25s ease;
}

/* ---------- Checks ---------- */
.cpp23-check {
	margin: 1.5em 0;
	padding: 1em 1.1em;
	border: 1px solid var(--cpp23-border);
	border-left: 4px solid var(--cpp23-accent);
	border-radius: var(--cpp23-radius);
	background: var(--cpp23-accent-soft);
}
.cpp23-check.is-done {
	border-left-color: var(--cpp23-ok);
	background: var(--cpp23-ok-soft);
}
.cpp23-check__head { margin-bottom: 0.5em; }
.cpp23-check__badge {
	display: inline-block;
	padding: 1px 8px;
	border-radius: 999px;
	background: var(--cpp23-accent);
	color: #fff;
	font-size: 0.78em;
	font-weight: 700;
	letter-spacing: 0.02em;
	vertical-align: 1px;
}
.cpp23-check.is-done .cpp23-check__badge { background: var(--cpp23-ok); }
.cpp23-check__body > :first-child { margin-top: 0; }
.cpp23-check__body > :last-child { margin-bottom: 0.5em; }
.cpp23-check__toggle {
	display: inline-flex;
	align-items: center;
	gap: 0.5em;
	font-weight: 600;
	cursor: pointer;
}
.cpp23-check__box { width: 1.15em; height: 1.15em; }

/* ---------- Lesson navigation ---------- */
.cpp23-ask {
	margin: 2em 0 1em;
	padding-top: 1em;
	border-top: 1px solid var(--cpp23-border);
}
.cpp23-lesson-nav {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 0.75em;
	margin: 1em 0 2em;
}
.cpp23-lesson-nav a {
	padding: 0.5em 0.9em;
	border: 1px solid var(--cpp23-border);
	border-radius: var(--cpp23-radius);
	text-decoration: none;
}
.cpp23-lesson-nav__course { margin: 0 auto; }

/* ---------- Course tracker ---------- */
.cpp23-tracker__summary { font-weight: 600; }
.cpp23-tracker__list {
	list-style: none;
	margin: 1em 0;
	padding: 0;
}
.cpp23-lesson-row {
	display: flex;
	align-items: flex-start;
	gap: 0.85em;
	margin: 0 0 0.6em;
	padding: 0.85em 1em;
	border: 1px solid var(--cpp23-border);
	border-radius: var(--cpp23-radius);
}
.cpp23-lesson-row__status {
	flex: 0 0 1.4em;
	height: 1.4em;
	margin-top: 0.1em;
	border: 2px solid var(--cpp23-border);
	border-radius: 50%;
	position: relative;
}
.cpp23-lesson-row.is-complete .cpp23-lesson-row__status {
	border-color: var(--cpp23-ok);
	background: var(--cpp23-ok);
}
.cpp23-lesson-row.is-complete .cpp23-lesson-row__status::after {
	content: "";
	position: absolute;
	left: 0.38em;
	top: 0.15em;
	width: 0.35em;
	height: 0.65em;
	border: solid #fff;
	border-width: 0 2px 2px 0;
	transform: rotate(45deg);
}
.cpp23-lesson-row__main { flex: 1 1 auto; min-width: 0; }
.cpp23-lesson-row__title { font-weight: 600; text-decoration: none; }
.cpp23-lesson-row__num { color: var(--cpp23-muted); }
.cpp23-lesson-row__excerpt { margin: 0.25em 0 0; font-size: 0.9em; color: var(--cpp23-muted); }
.cpp23-lesson-row__count { flex: 0 0 auto; font-size: 0.85em; color: var(--cpp23-muted); white-space: nowrap; }

.cpp23-note, .cpp23-empty { color: var(--cpp23-muted); }

/* ---------- Forum ---------- */
.cpp23-forum__bar {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 0.75em;
	margin-bottom: 1em;
}
.cpp23-button,
.cpp23-forum-form button[type="submit"] {
	display: inline-block;
	padding: 0.55em 1.1em;
	border: 0;
	border-radius: var(--cpp23-radius);
	background: var(--cpp23-accent);
	color: #fff !important;
	font-weight: 600;
	text-decoration: none;
	cursor: pointer;
}
.cpp23-topics {
	list-style: none;
	margin: 0;
	padding: 0;
	border: 1px solid var(--cpp23-border);
	border-radius: var(--cpp23-radius);
}
.cpp23-topic {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 0.5em 1em;
	padding: 0.85em 1em;
	border-bottom: 1px solid var(--cpp23-border);
}
.cpp23-topic:last-child { border-bottom: 0; }
.cpp23-topic__title { font-weight: 600; text-decoration: none; }
.cpp23-topic__meta, .cpp23-topic__stats { font-size: 0.85em; color: var(--cpp23-muted); }
.cpp23-topic__main { flex: 1 1 18em; min-width: 0; }

.cpp23-forum-form label { display: block; margin: 0 0 0.3em; font-weight: 600; }
.cpp23-forum-form input[type="text"],
.cpp23-forum-form select,
.cpp23-forum-form textarea {
	width: 100%;
	box-sizing: border-box;
	margin-bottom: 1em;
	padding: 0.55em 0.7em;
	border: 1px solid var(--cpp23-border);
	border-radius: 6px;
	font: inherit;
}
.cpp23-forum-form textarea { min-height: 14em; font-family: ui-monospace, Consolas, monospace; font-size: 0.92em; }
.cpp23-hint { font-size: 0.85em; color: var(--cpp23-muted); margin-top: -0.6em; margin-bottom: 1em; }
.cpp23-notice {
	margin: 0 0 1em;
	padding: 0.75em 1em;
	border-radius: var(--cpp23-radius);
	border: 1px solid var(--cpp23-border);
	background: var(--cpp23-ok-soft);
}
.cpp23-notice--error { background: rgba(185, 28, 28, 0.08); border-color: rgba(185, 28, 28, 0.4); }
.cpp23-notice ul { margin: 0; padding-left: 1.2em; }

.cpp23-topic-meta { font-size: 0.9em; color: var(--cpp23-muted); margin-bottom: 1.25em; }
.cpp23-forum-body code:not(pre code), .comment-content code:not(pre code) {
	padding: 0.1em 0.35em;
	border-radius: 4px;
	background: rgba(127, 127, 127, 0.15);
	font-size: 0.92em;
}
.cpp23-pagination { margin: 1em 0; }
.cpp23-pagination .page-numbers { margin-right: 0.4em; }

/* Honeypot: hidden from people, visible to naive bots. */
.cpp23-hp {
	position: absolute !important;
	left: -10000px !important;
	top: auto !important;
	width: 1px !important;
	height: 1px !important;
	overflow: hidden !important;
}
.cf-turnstile { margin: 0.5em 0 1em; }

@media (max-width: 600px) {
	.cpp23-lesson-progress__row { flex-direction: column; gap: 0.2em; }
	.cpp23-lesson-nav { flex-direction: column; }
	.cpp23-lesson-nav__course { margin: 0; }
}