/* 串珠探索 — 自含樣式（呼應首頁 HTML5 UP Story：白底、#47D3E5 強調） */

:root {
	--accent: #47D3E5;
	--accent-dark: #1ebdd1;
	--ink: #111;
	--muted: #777;
	--line: #e4e4e4;
	--font: "Source Sans Pro", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
	height: 100%;
}

body {
	font-family: var(--font);
	font-weight: 300;
	color: var(--ink);
	background: #fff;
	display: flex;
	flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

/* ── Header ── */

.site-header {
	border-bottom: 2px solid var(--accent);
	padding: 0.9rem 1.25rem 0.8rem;
	flex: none;
}

.header-inner {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 1rem;
	flex-wrap: wrap;
}

.title-block { display: flex; align-items: baseline; gap: 0.75rem; flex-wrap: wrap; }

h1 {
	font-size: 1.5rem;
	font-weight: 300;
	letter-spacing: 0.35em;
	text-indent: 0.35em;
	white-space: nowrap;
}

.subtitle { color: var(--muted); font-size: 0.9rem; }

.home-link { font-size: 0.9rem; white-space: nowrap; }

/* ── Controls ── */

.controls {
	display: flex;
	gap: 0.5rem;
	margin-top: 0.75rem;
	flex-wrap: wrap;
	align-items: center;
}

select {
	font-family: var(--font);
	font-size: 0.95rem;
	padding: 0.45rem 0.5rem;
	border: 1px solid var(--line);
	border-radius: 4px;
	background: #fff;
	color: var(--ink);
	max-width: 12rem;
}

select:focus, button:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.btn {
	font-family: var(--font);
	font-size: 0.95rem;
	padding: 0.45rem 1.1rem;
	border: 1px solid var(--accent);
	border-radius: 4px;
	background: #fff;
	color: var(--accent);
	cursor: pointer;
	letter-spacing: 0.15em;
	text-indent: 0.15em;
	transition: background 0.15s, color 0.15s;
}

.btn:hover { background: rgba(71, 211, 229, 0.1); }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); }
.btn.small { padding: 0.2rem 0.6rem; font-size: 0.85rem; }
.btn:disabled { opacity: 0.5; cursor: default; }

/* ── 焦點模式 ── */

.focus-box { margin-top: 0.6rem; }

.focus-box summary {
	cursor: pointer;
	font-size: 0.9rem;
	color: var(--accent);
	letter-spacing: 0.1em;
	user-select: none;
}

.focus-box summary:hover { color: var(--accent-dark); }

.focus-body { margin-top: 0.5rem; }

.focus-picker {
	display: flex;
	gap: 0.5rem;
	flex-wrap: wrap;
	align-items: center;
}

.focus-list {
	display: flex;
	gap: 0.35rem;
	flex-wrap: wrap;
	margin-top: 0.5rem;
}

.focus-item {
	display: inline-flex;
	align-items: center;
	gap: 0.3rem;
	font-size: 0.88rem;
	padding: 0.22rem 0.4rem 0.22rem 0.7rem;
	border: 1px solid var(--accent);
	border-radius: 999px;
	background: rgba(71, 211, 229, 0.08);
	color: var(--accent-dark);
	line-height: 1.4;
}

.focus-remove {
	border: none;
	background: none;
	padding: 0 0.15rem;
	font-size: 0.8rem;
	color: var(--muted);
	cursor: pointer;
	line-height: 1;
}

.focus-remove:hover { color: #a33; }

.focus-actions {
	display: flex;
	gap: 0.5rem;
	margin-top: 0.4rem;
	flex-wrap: wrap;
}

.conn-line {
	display: flex;
	align-items: center;
	gap: 0.35rem;
	margin: 0.3rem 0;
	flex-wrap: wrap;
}

.conn-line .ref-chip { margin: 0; }

.conn-arrow { color: var(--muted); font-size: 0.95rem; }

.bridge-group {
	margin: 0.6rem 0 0.9rem;
	padding: 0.5rem 0.7rem;
	border: 1px solid var(--line);
	border-radius: 6px;
	background: #fafafa;
}

.bridge-title {
	font-size: 0.9rem;
	font-weight: 600;
	color: #555;
	margin-bottom: 0.25rem;
	letter-spacing: 0.05em;
}

.passage-verse-head {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	margin-top: 0.9rem;
}

.passage-verse-num {
	font-weight: 600;
	color: var(--accent-dark);
	letter-spacing: 0.05em;
}

/* ── Error banner / toast ── */

.error-banner {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	padding: 0.5rem 1.25rem;
	background: #fff4f4;
	border-bottom: 1px solid #f0c0c0;
	color: #a33;
	font-size: 0.9rem;
	flex: none;
}

.error-banner[hidden] { display: none; }

.toast {
	position: fixed;
	left: 50%;
	bottom: 1.5rem;
	transform: translateX(-50%);
	background: rgba(17, 17, 17, 0.85);
	color: #fff;
	padding: 0.5rem 1rem;
	border-radius: 4px;
	font-size: 0.9rem;
	z-index: 10;
}

/* ── Layout ── */

.layout {
	flex: 1;
	display: flex;
	min-height: 0;
}

#graph {
	flex: 1;
	min-width: 0;
	background:
		radial-gradient(circle, rgba(71, 211, 229, 0.12) 1px, transparent 1px) 0 0 / 22px 22px,
		#fdfdfd;
}

#panel {
	width: 34%;
	min-width: 300px;
	max-width: 430px;
	border-left: 1px solid var(--line);
	overflow-y: auto;
	padding: 1.1rem 1.25rem 2rem;
	font-size: 0.95rem;
	line-height: 1.75;
}

/* ── Panel content ── */

.panel-intro h2 { font-weight: 400; font-size: 1.1rem; margin-bottom: 0.6rem; letter-spacing: 0.1em; }
.panel-intro ol { padding-left: 1.4rem; color: #333; }
.panel-intro li { margin-bottom: 0.35rem; }
.fine-print { margin-top: 1rem; font-size: 0.8rem; color: var(--muted); }

.verse-ref {
	font-size: 1.15rem;
	font-weight: 500;
	letter-spacing: 0.08em;
	margin-bottom: 0.4rem;
}

.verse-text {
	font-size: 1.05rem;
	line-height: 2;
	margin-bottom: 1rem;
	padding: 0.7rem 0.9rem;
	background: rgba(71, 211, 229, 0.07);
	border-left: 3px solid var(--accent);
	border-radius: 0 4px 4px 0;
}

.section-label {
	font-size: 0.85rem;
	letter-spacing: 0.25em;
	text-indent: 0.25em;
	color: var(--muted);
	border-bottom: 1px solid var(--line);
	padding-bottom: 0.2rem;
	margin: 1.1rem 0 0.6rem;
}

.foot-row { margin-bottom: 0.5rem; }

.foot-letter {
	font-size: 0.75rem;
	vertical-align: super;
	color: var(--muted);
	margin-right: 0.25rem;
}

.ref-chip {
	display: inline-block;
	font-family: var(--font);
	font-size: 0.88rem;
	padding: 0.28rem 0.6rem;
	margin: 0.15rem 0.25rem 0.15rem 0;
	border: 1px solid var(--accent);
	border-radius: 999px;
	background: #fff;
	color: var(--accent);
	cursor: pointer;
	line-height: 1.4;
	transition: background 0.15s, color 0.15s;
}

.ref-chip:hover { background: var(--accent); color: #fff; }
.ref-chip.cf { border-style: dashed; }

.unparsed-text { color: var(--muted); font-size: 0.88rem; margin-right: 0.4rem; }

details.notes { margin-top: 0.4rem; }
details.notes summary {
	cursor: pointer;
	font-size: 0.9rem;
	color: var(--accent);
	letter-spacing: 0.1em;
	user-select: none;
}
details.notes summary:hover { color: var(--accent-dark); }

.note-item { margin: 0.5rem 0; font-size: 0.9rem; color: #333; }
.note-num { color: var(--accent-dark); font-weight: 600; margin-right: 0.3rem; }

.panel-actions { margin-top: 1.25rem; }
.panel-actions .btn { width: 100%; text-align: center; }

.status-note { color: var(--muted); font-size: 0.85rem; margin: 0.5rem 0; }
.empty-note { color: var(--muted); font-size: 0.9rem; }

/* ── Mobile ── */

@media (max-width: 800px) {
	.layout { flex-direction: column; }
	#graph { flex: none; height: 52vh; border-bottom: 1px solid var(--line); }
	#panel { width: 100%; min-width: 0; max-width: none; border-left: none; overflow-y: visible; }
	body { display: block; }
	h1 { font-size: 1.25rem; }
	select { max-width: none; flex: 1 1 6.5rem; }
	.btn { flex: 1 1 auto; }
}