:root {
	--ink: #1b1b1f;
	--muted: #6b7280;
	--line: #e5e7eb;
	--bg: #ffffff;
}
* { box-sizing: border-box; }
body {
	margin: 0;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	background: var(--bg);
	color: var(--ink);
}
.site-header {
	padding: 28px 24px;
	text-align: center;
	border-bottom: 1px solid var(--line);
}
.site-header .brand {
	font-size: 20px;
	font-weight: 700;
	letter-spacing: 1px;
}
.wrap {
	max-width: 1100px;
	margin: 0 auto;
	padding: 28px 20px 60px;
}
.day-tabs {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	justify-content: center;
	margin-bottom: 28px;
}
.day-tab {
	padding: 9px 20px;
	border-radius: 999px;
	border: 1px solid var(--line);
	background: #fff;
	color: var(--ink);
	font-size: 14px;
	cursor: pointer;
}
.day-tab.active {
	background: var(--ink);
	color: #fff;
	border-color: var(--ink);
}
.day-panel { display: none; }
.day-panel.active { display: block; }
.day-description {
	text-align: center;
	color: var(--muted);
	max-width: 640px;
	margin: 0 auto 24px;
	font-size: 15px;
}
.photo-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
	gap: 14px;
}
.photo-item {
	margin: 0;
	border-radius: 10px;
	overflow: hidden;
	background: #f3f3f4;
}
.photo-item img {
	width: 100%;
	height: 220px;
	object-fit: cover;
	display: block;
}
.lightbox-link { display: block; }
.empty-note {
	text-align: center;
	color: var(--muted);
	padding: 40px 0;
}

.lightbox {
	display: none;
	position: fixed;
	inset: 0;
	background: rgba(0,0,0,.92);
	z-index: 1000;
	align-items: center;
	justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox img {
	max-width: 90vw;
	max-height: 88vh;
	display: block;
}
.lightbox-close,
.lightbox-nav {
	position: absolute;
	background: transparent;
	border: none;
	color: #fff;
	font-size: 28px;
	cursor: pointer;
	padding: 10px;
	line-height: 1;
}
.lightbox-close { top: 14px; right: 18px; font-size: 34px; }
.lightbox-prev { left: 14px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 14px; top: 50%; transform: translateY(-50%); }

@media (max-width: 560px) {
	.photo-item img { height: 160px; }
}