/* BCS Vision Exam — student pages */
.bcsv {
	--bcsv-ink: #16213a;
	--bcsv-muted: #5b6475;
	--bcsv-line: #e3e7ef;
	--bcsv-surface: #ffffff;
	--bcsv-soft: #f5f7fb;
	--bcsv-brand: #2443a8;
	--bcsv-brand-ink: #ffffff;
	--bcsv-good: #157a46;
	--bcsv-good-soft: #e7f6ee;
	--bcsv-bad: #b42318;
	--bcsv-bad-soft: #fdecea;
	--bcsv-warn: #a15c07;
	--bcsv-warn-soft: #fff4e0;
	color: var(--bcsv-ink);
	font-size: 16px;
	line-height: 1.55;
	max-width: 920px;
	margin: 0 auto;
}
.bcsv *, .bcsv *::before, .bcsv *::after { box-sizing: border-box; }
.bcsv a { color: var(--bcsv-brand); }
.bcsv-box {
	background: var(--bcsv-surface);
	border: 1px solid var(--bcsv-line);
	border-radius: 14px;
	padding: 22px;
	margin: 0 0 18px;
}
.bcsv-center { text-align: center; }
.bcsv-title { margin: 0 0 10px; font-size: 1.5em; line-height: 1.3; }
.bcsv-muted { color: var(--bcsv-muted); font-size: 0.92em; }
.bcsv-back { margin: 0 0 10px; }
.bcsv-btn {
	display: inline-block;
	background: var(--bcsv-brand);
	color: var(--bcsv-brand-ink) !important;
	border: 1px solid var(--bcsv-brand);
	border-radius: 10px;
	padding: 9px 18px;
	font-weight: 600;
	text-decoration: none !important;
	cursor: pointer;
	line-height: 1.3;
	font-size: 15px;
}
.bcsv-btn:hover { filter: brightness(1.08); }
.bcsv-btn-ghost { background: transparent; color: var(--bcsv-brand) !important; }
.bcsv-btn-lg { padding: 12px 28px; font-size: 17px; }
.bcsv-alert { border-radius: 10px; padding: 12px 14px; margin: 0 0 14px; }
.bcsv-alert-error { background: var(--bcsv-bad-soft); color: var(--bcsv-bad); }
.bcsv-alert-info { background: var(--bcsv-soft); color: var(--bcsv-ink); border: 1px solid var(--bcsv-line); }
.bcsv-tag { display: inline-block; background: var(--bcsv-soft); border: 1px solid var(--bcsv-line); border-radius: 999px; padding: 3px 10px; font-size: 0.85em; color: var(--bcsv-muted); }

/* Exam list */
.bcsv-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.bcsv-exam-card { background: var(--bcsv-surface); border: 1px solid var(--bcsv-line); border-radius: 14px; padding: 18px; display: flex; flex-direction: column; }
.bcsv-exam-card h3 { margin: 0 0 8px; font-size: 1.12em; line-height: 1.35; }
.bcsv-card-foot { margin-top: auto; padding-top: 12px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.bcsv-facts { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 14px; color: var(--bcsv-muted); font-size: 0.92em; }
.bcsv-facts li { margin: 0; }
.bcsv-facts-lg { font-size: 1em; color: var(--bcsv-ink); margin: 8px 0 14px; }
.bcsv-instructions { background: var(--bcsv-soft); border-radius: 10px; padding: 12px 14px; margin: 0 0 14px; }
.bcsv-start-form { margin-top: 10px; }

/* Paper */
.bcsv-bar {
	position: sticky;
	top: 0;
	z-index: 50;
	display: flex;
	align-items: center;
	gap: 12px;
	background: var(--bcsv-surface);
	border: 1px solid var(--bcsv-line);
	border-radius: 12px;
	padding: 10px 14px;
	margin-bottom: 8px;
	box-shadow: 0 4px 14px rgba(22, 33, 58, 0.08);
}
.admin-bar .bcsv-bar { top: 32px; }
@media (max-width: 782px) { .admin-bar .bcsv-bar { top: 46px; } }
.bcsv-bar-title { font-weight: 600; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bcsv-bar-stats { color: var(--bcsv-muted); font-size: 0.92em; white-space: nowrap; }
.bcsv-timer { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 1.25em; background: var(--bcsv-soft); border-radius: 8px; padding: 4px 10px; min-width: 84px; text-align: center; }
.bcsv-timer.is-low { background: var(--bcsv-warn-soft); color: var(--bcsv-warn); }
.bcsv-timer.is-critical { background: var(--bcsv-bad-soft); color: var(--bcsv-bad); }
.bcsv-save-state { min-height: 1.4em; font-size: 0.85em; color: var(--bcsv-muted); margin: 0 4px 10px; }
.bcsv-save-state.is-ok { color: var(--bcsv-good); }
.bcsv-save-state.is-warn { color: var(--bcsv-warn); }

.bcsv-q {
	background: var(--bcsv-surface);
	border: 1px solid var(--bcsv-line);
	border-radius: 12px;
	padding: 16px;
	margin: 0 0 12px;
	min-width: 0;
}
.bcsv-q.is-answered { border-color: #b9c6ec; }
.bcsv-q-head { font-weight: 600; margin-bottom: 10px; padding: 0; float: left; width: 100%; }
.bcsv-q-head + * { clear: both; }
.bcsv-q-num { color: var(--bcsv-brand); margin-right: 2px; }
.bcsv-q-text p { margin: 0 0 6px; display: inline; }
.bcsv-q-opts { display: grid; gap: 8px; clear: both; }
.bcsv-opt-row {
	display: flex;
	align-items: flex-start;
	gap: 10px;
	border: 1px solid var(--bcsv-line);
	border-radius: 10px;
	padding: 9px 12px;
	cursor: pointer;
	background: var(--bcsv-surface);
	margin: 0;
	font-weight: 400;
}
label.bcsv-opt-row:hover { background: var(--bcsv-soft); }
.bcsv-opt-row input { margin: 5px 0 0; flex: none; width: 18px; height: 18px; }
.bcsv-letter { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--bcsv-soft); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85em; }
.bcsv-opt-row input:checked ~ .bcsv-letter { background: var(--bcsv-brand); color: #fff; }
label.bcsv-opt-row:has(input:checked) { border-color: var(--bcsv-brand); background: #eef2fd; }
.bcsv-opt-text { flex: 1; min-width: 0; }
.bcsv-clear { background: none; border: 0; color: var(--bcsv-muted); font-size: 0.85em; margin-top: 8px; padding: 0; cursor: pointer; text-decoration: underline; }
.bcsv-submit-row { text-align: center; padding: 14px 0 30px; }

/* Result */
.bcsv-score { display: grid; grid-template-columns: 2fr repeat(4, 1fr); gap: 10px; margin: 12px 0; }
.bcsv-score-sm { grid-template-columns: repeat(4, 1fr); }
.bcsv-score-main { background: var(--bcsv-brand); color: #fff; border-radius: 12px; padding: 14px 16px; display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 8px; }
.bcsv-score-num { font-size: 2.2em; font-weight: 800; line-height: 1; }
.bcsv-score-of { font-size: 1.1em; opacity: 0.85; }
.bcsv-score-pct { margin-left: auto; background: rgba(255, 255, 255, 0.18); border-radius: 999px; padding: 2px 10px; font-weight: 600; }
.bcsv-stat { background: var(--bcsv-soft); border-radius: 12px; padding: 12px; font-size: 0.85em; color: var(--bcsv-muted); }
.bcsv-stat span { display: block; font-size: 1.6em; font-weight: 700; color: var(--bcsv-ink); line-height: 1.2; }
.bcsv-stat-c span { color: var(--bcsv-good); }
.bcsv-stat-w span { color: var(--bcsv-bad); }
.bcsv-pass { font-weight: 600; margin: 4px 0 10px; }
.bcsv-pass.is-pass { color: var(--bcsv-good); }
.bcsv-pass.is-fail { color: var(--bcsv-bad); }
@media (max-width: 640px) {
	.bcsv-score { grid-template-columns: 1fr 1fr; }
	.bcsv-score-main { grid-column: 1 / -1; }
	.bcsv-score-sm { grid-template-columns: 1fr 1fr; }
	.bcsv-bar-title { display: none; }
	.bcsv-box { padding: 16px; }
}
.bcsv-table { width: 100%; border-collapse: collapse; font-size: 0.92em; margin: 6px 0; }
.bcsv-table th, .bcsv-table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--bcsv-line); }
.bcsv-table th { color: var(--bcsv-muted); font-weight: 600; }
.bcsv-table-wrap { overflow-x: auto; }
.bcsv-neg { color: var(--bcsv-bad); }
.bcsv-review-filter { display: flex; gap: 6px; margin: 4px 0 12px; flex-wrap: wrap; }
.bcsv-review-filter button { border: 1px solid var(--bcsv-line); background: var(--bcsv-surface); border-radius: 999px; padding: 5px 14px; cursor: pointer; font-size: 0.9em; color: var(--bcsv-ink); }
.bcsv-review-filter button.is-on { background: var(--bcsv-ink); color: #fff; border-color: var(--bcsv-ink); }
.bcsv-res { display: inline-block; font-size: 0.78em; font-weight: 700; border-radius: 999px; padding: 2px 9px; margin-left: 6px; vertical-align: middle; }
.bcsv-res-c { background: var(--bcsv-good-soft); color: var(--bcsv-good); }
.bcsv-res-w { background: var(--bcsv-bad-soft); color: var(--bcsv-bad); }
.bcsv-res-s { background: var(--bcsv-soft); color: var(--bcsv-muted); }
.bcsv-q-done .bcsv-opt-row { cursor: default; }
.bcsv-opt-row.is-key { border-color: var(--bcsv-good); background: var(--bcsv-good-soft); }
.bcsv-opt-row.is-key .bcsv-letter { background: var(--bcsv-good); color: #fff; }
.bcsv-opt-row.is-wrong { border-color: var(--bcsv-bad); background: var(--bcsv-bad-soft); }
.bcsv-opt-row.is-wrong .bcsv-letter { background: var(--bcsv-bad); color: #fff; }
.bcsv-opt-note { flex: none; font-size: 0.78em; font-weight: 700; align-self: center; }
.is-key .bcsv-opt-note { color: var(--bcsv-good); }
.is-wrong .bcsv-opt-note { color: var(--bcsv-bad); }
.bcsv-expl { margin-top: 10px; background: #f3f6ff; border-left: 4px solid var(--bcsv-brand); border-radius: 8px; padding: 10px 12px; font-size: 0.95em; }
.bcsv-expl p { margin: 0 0 6px; }
.bcsv-expl p:last-child { margin-bottom: 0; }
.bcsv-q-removed { color: var(--bcsv-muted); font-style: italic; }

/* Dashboard */
.bcsv-dash { max-width: none; }
.bcsv-dash-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.bcsv-dash-head h2 { margin: 0; font-size: 1.4em; }
.bcsv-chart { width: 100%; height: auto; max-height: 220px; display: block; }
.bcsv-chart-grid { stroke: var(--bcsv-line); stroke-width: 1; }
.bcsv-chart-label { fill: var(--bcsv-muted); font-size: 11px; }
.bcsv-chart-line { stroke: var(--bcsv-brand); stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.bcsv-chart-dot { fill: var(--bcsv-surface); stroke: var(--bcsv-brand); stroke-width: 2.5; }