/*
 * PEOS 재사용 강연 뷰어 스타일
 * 원본 KOAT 웹 프레젠테이션의 시각적 정체성을 보존한다.
 * 상단 브랜드 바만 S-reborn 과 시각적으로 연결한다.
 * 발표자 노트 관련 스타일은 공개 뷰어에서 제외됨.
 */
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
	font-family: 'Pretendard', 'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif;
	color: #e9eef6;
	background: #101827;
}
.lec-viewer button {
	cursor: pointer;
	background: #233044;
	border: 1px solid #39475c;
	border-radius: 9px;
	color: #f0f5ff;
	padding: 9px 13px;
	font: inherit;
}
.lec-viewer button:hover { background: #31425c; }

/* 상단 바 — S-reborn 과 시각적 연결 */
.lec-header {
	height: 68px;
	padding: 0 clamp(16px, 3vw, 44px);
	display: flex;
	align-items: center;
	justify-content: space-between;
	border-bottom: 1px solid #283649;
}
.lec-brand { display: flex; gap: 12px; align-items: baseline; letter-spacing: .06em; min-width: 0; }
.lec-brand b { font-size: 23px; }
.lec-brand span { font-size: 12px; color: #9daec6; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lec-home {
	font-size: 12px;
	color: #9daec6;
	text-decoration: none;
	border: 1px solid #39475c;
	border-radius: 20px;
	padding: 5px 12px;
	white-space: nowrap;
	transition: background .15s, color .15s;
}
.lec-home:hover { background: #233044; color: #f0f5ff; }
.lec-header nav { display: flex; gap: 9px; }

.lec-main {
	max-width: 1580px;
	margin: 0 auto;
	padding: 24px 24px 12px;
	display: flex;
	gap: 22px;
	align-items: flex-start;
}
.presentation { width: 100%; min-width: 0; flex: 1; }
.stage-shell {
	width: 100%;
	aspect-ratio: 16 / 9;
	border-radius: 12px;
	overflow: hidden;
	position: relative;
	background: #fff;
	box-shadow: 0 22px 60px #05091066;
}
.stage {
	position: absolute;
	width: 1333.333px;
	height: 750px;
	transform-origin: top left;
	background: #fff;
	color: #183451;
	overflow: hidden;
}
.text {
	position: absolute;
	white-space: pre-wrap;
	overflow: visible;
	line-height: 1.24;
	letter-spacing: -.025em;
}
.hero-img {
	position: absolute;
	object-fit: cover;
	left: 746px;
	top: 138px;
	width: 517px;
	height: 517px;
	border-radius: 16px;
}
.rule { position: absolute; left: 70px; width: 1195px; height: 1px; background: #dce3eb; }
.rule.top { top: 79px; }
.rule.bottom { top: 706px; }
.bullet { position: absolute; width: 10px; height: 10px; border-radius: 50%; background: #25a4be; }

.below {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 15px;
	margin-top: 20px;
}
.slide-info { min-width: 0; }
.slide-info span { font-size: 12px; color: #8fbacc; letter-spacing: .05em; }
.slide-info h1 { font-size: clamp(17px, 2vw, 24px); margin: 5px 0; font-weight: 650; }
.controls { display: flex; align-items: center; gap: 14px; white-space: nowrap; }
.controls button { font-size: 22px; padding: 6px 14px; }
.controls span { color: #bdc8da; font-variant-numeric: tabular-nums; }
.progress { background: #26384d; height: 3px; margin-top: 18px; border-radius: 20px; overflow: hidden; }
.progress div { height: 100%; background: #42bdd2; transition: width .2s; }

/* 전체 슬라이드 목차 */
.overview {
	position: fixed;
	inset: 0;
	z-index: 10;
	background: #101827f8;
	overflow-y: auto;
	padding: 30px clamp(20px, 5vw, 80px);
}
.overview-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 14px; }
.card {
	background: #1b293a;
	border: 1px solid #33425a;
	border-radius: 10px;
	padding: 14px;
	text-align: left;
	color: #e9eef6;
}
.card:hover { border-color: #5fd1e1; }
.card img { width: 100%; aspect-ratio: 1.4; object-fit: cover; border-radius: 6px; background: white; }
.card strong { display: block; margin-top: 8px; font-size: 13px; }
.card small { color: #9fbbd3; }

.lec-footer {
	display: flex;
	justify-content: space-between;
	padding: 20px 27px;
	color: #75879f;
	font-size: 11px;
	gap: 12px;
}
.lec-footer span { text-align: right; }

@media (max-width: 700px) {
	.lec-main { padding: 12px; }
	.lec-header { height: 60px; }
	.lec-header nav button span { display: none; }
	.lec-header nav button { padding: 8px; }
	.lec-brand span { display: none; }
	.below { flex-wrap: wrap; }
	.controls { margin-left: auto; }
	.slide-info h1 { font-size: 18px; }
	.lec-footer span { display: none; }
}
[hidden] { display: none !important; }