:root {
	--bg: #f8f9fa;
	--card: #ffffff;
	--border: #e0e0e0;
	--text: #222;
	--muted: #666;
	--good-bg: #e8f5e9;
	--bad-bg: #ffebee;
	--good: #2e7d32;
	--bad: #c62828;
	--primary: #1976d2;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
}

header {
	background: var(--card);
	border-bottom: 1px solid var(--border);
	padding: 1rem 2rem;
}

header h1 {
	margin: 0;
	font-size: 1.4rem;
}

nav {
	margin-top: 0.5rem;
	display: flex;
	align-items: center;
	gap: 1rem;
}

#logout-form {
	margin-left: auto;
}

nav a {
	margin-right: 1rem;
	text-decoration: none;
	color: var(--primary);
	font-weight: 500;
}

nav a:hover {
	text-decoration: underline;
}

main {
	padding: 2rem;
	max-width: 1200px;
	margin: auto;
}

.card {
	background: var(--card);
	padding: 1.5rem;
	border-radius: 8px;
	box-shadow: 0 2px 6px rgba(0,0,0,0.05);
	margin-bottom: 2rem;
}

table {
	width: 100%;
	border-collapse: collapse;
	background: var(--card);
}

th, td {
	padding: 0.75rem;
	border-bottom: 1px solid var(--border);
	text-align: left;
}

th {
	background: #fafafa;
	font-weight: 600;
}

tr.metric-row {
	cursor: pointer;
	transition: background 0.15s ease;
}

tr.metric-row:hover {
	background: #f5f5f5;
}

tr.good {
	background-color: var(--good-bg);
}

tr.bad {
	background-color: var(--bad-bg);
}

.trend {
	font-size: 0.8rem;
	margin-left: 4px;
}

.good-arrow {
	color: var(--good);
}

.bad-arrow {
	color: var(--bad);
}

.metric-details {
	display: none;
	background: #fafafa;
}

.metric-details td {
	padding: 1rem;
}

button {
	background: var(--primary);
	color: white;
	border: none;
	padding: 0.6rem 1rem;
	margin: 1em 0;
	border-radius: 4px;
	cursor: pointer;
}

button:hover {
	opacity: 0.9;
}

input[type=datetime-local], input[type=text], select, textarea {
	width: 100%;
}

input, select, textarea {
	padding: 0.4rem;
	border: 1px solid var(--border);
	border-radius: 4px;
}

fieldset {
	border: 1px solid var(--border);
	padding: 1rem;
	margin-bottom: 1.5rem;
	border-radius: 6px;
}

legend {
	font-weight: 600;
	padding: 0 0.5rem;
}

footer {
	text-align: center;
	padding: 1.5rem;
	color: var(--muted);
	font-size: 0.9rem;
}