:root {
	--bg: #f5f5f4;
	--surface: #ffffff;
	--text: #1c1917;
	--muted: #78716c;
	--border: #e7e5e4;
	--accent: #b4002f;
	--accent-hover: #8f0025;
	--ok-bg: #ecfdf3;
	--ok-text: #05603a;
	--error-bg: #fef3f2;
	--error-text: #b42318;
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
}

a {
	color: var(--accent);
}

h1, h2 {
	margin: 0 0 12px;
	line-height: 1.3;
}

h1 {
	font-size: 22px;
}

h2 {
	font-size: 18px;
}

.muted {
	color: var(--muted);
}

/* 상단 메뉴 */
.topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	padding: 12px 24px;
	background: var(--surface);
	border-bottom: 1px solid var(--border);
}

.brand {
	color: var(--text);
	font-weight: 700;
	text-decoration: none;
}

.topbar nav {
	display: flex;
	align-items: center;
	gap: 4px;
}

.topbar nav a,
.topbar nav .link {
	padding: 6px 10px;
	border-radius: 6px;
	color: var(--muted);
	text-decoration: none;
}

.topbar nav a.active,
.topbar nav a:hover,
.topbar nav .link:hover {
	background: var(--bg);
	color: var(--text);
}

.topbar form {
	margin: 0;
}

button.link {
	border: 0;
	background: none;
	font: inherit;
	cursor: pointer;
}

/* 본문 */
.page {
	max-width: 1080px;
	margin: 24px auto;
	padding: 0 16px;
	display: grid;
	gap: 20px;
}

.card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 10px;
	padding: 24px;
}

body.center {
	display: grid;
	place-items: center;
	min-height: 100vh;
	padding: 16px;
}

.card.login {
	width: 100%;
	max-width: 380px;
}

.breadcrumb {
	margin: 0 0 4px;
	font-size: 13px;
}

/* 폼 */
form label {
	display: grid;
	gap: 6px;
	margin-bottom: 16px;
	font-weight: 600;
}

form label small {
	font-weight: 400;
}

input[type="text"],
input[type="password"],
input[type="date"],
input[type="file"] {
	width: 100%;
	padding: 9px 11px;
	border: 1px solid var(--border);
	border-radius: 6px;
	background: var(--surface);
	font: inherit;
}

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

form.upload {
	max-width: 440px;
	margin-top: 8px;
}

button.primary {
	width: 100%;
	padding: 10px 16px;
	border: 0;
	border-radius: 6px;
	background: var(--accent);
	color: #fff;
	font: inherit;
	font-weight: 600;
	cursor: pointer;
}

button.primary:hover {
	background: var(--accent-hover);
}

form.upload button.primary {
	width: auto;
}

.alert {
	display: grid;
	gap: 2px;
	margin: 0 0 16px;
	padding: 10px 14px;
	border-radius: 6px;
}

.alert.ok {
	background: var(--ok-bg);
	color: var(--ok-text);
}

.alert.error {
	background: var(--error-bg);
	color: var(--error-text);
}

.notes {
	margin: 20px 0 0;
	padding-left: 18px;
	font-size: 14px;
}

/* 표 */
.table-wrap {
	overflow-x: auto;
}

table {
	width: 100%;
	border-collapse: collapse;
	font-size: 14px;
}

th, td {
	padding: 8px 10px;
	border-bottom: 1px solid var(--border);
	text-align: left;
	white-space: nowrap;
}

th {
	color: var(--muted);
	font-weight: 600;
}

td.num, th.num {
	text-align: right;
	font-variant-numeric: tabular-nums;
}

td.file {
	max-width: 240px;
	overflow: hidden;
	text-overflow: ellipsis;
}

@media (max-width: 640px) {
	.topbar {
		flex-direction: column;
		align-items: flex-start;
		padding: 12px 16px;
	}

	.card {
		padding: 18px;
	}
}