:root {
	--bg: #eef2f7;
	--bg-elevated: #f8fafc;
	--card: #ffffff;
	--text: #0f172a;
	--text-secondary: #334155;
	--muted: #64748b;
	--border: #e2e8f0;
	--border-strong: #cbd5e1;
	--primary: #2563eb;
	--primary-hover: #1d4ed8;
	--primary-soft: #eff6ff;
	--danger: #dc2626;
	--danger-soft: #fef2f2;
	--success: #059669;
	--success-soft: #ecfdf5;
	--radius-sm: 8px;
	--radius: 12px;
	--radius-lg: 16px;
	--shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
	--shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
	--shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.1);
	--font: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	font-family: var(--font);
	background: var(--bg);
	color: var(--text);
	min-height: 100vh;
	-webkit-font-smoothing: antialiased;
}

a {
	color: var(--primary);
	text-decoration: none;
	transition: color 0.15s;
}

a:hover {
	color: var(--primary-hover);
}

.card {
	background: var(--card);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 22px 24px;
	margin-bottom: 20px;
	box-shadow: var(--shadow-sm);
}

h1 {
	font-size: 1.35rem;
	font-weight: 700;
	margin: 0 0 8px;
	letter-spacing: -0.02em;
}

h2 {
	font-size: 1.05rem;
	font-weight: 700;
	margin: 0 0 10px;
}

label {
	display: block;
	font-size: 0.82rem;
	font-weight: 600;
	color: var(--text-secondary);
	margin: 14px 0 6px;
}

label:first-of-type {
	margin-top: 0;
}

input[type='text'],
input[type='password'],
input[type='number'],
input[type='datetime-local'],
input[type='email'],
textarea,
select {
	width: 100%;
	padding: 11px 14px;
	border-radius: var(--radius-sm);
	border: 1px solid var(--border);
	background: var(--card);
	color: var(--text);
	font-size: 0.92rem;
	font-family: inherit;
	transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
textarea:focus,
select:focus {
	outline: none;
	border-color: #93c5fd;
	box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

input::placeholder,
textarea::placeholder {
	color: #94a3b8;
}

button,
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
	padding: 10px 18px;
	border-radius: var(--radius-sm);
	border: none;
	background: linear-gradient(180deg, #3b82f6 0%, var(--primary) 100%);
	color: #fff;
	font-weight: 600;
	font-size: 0.9rem;
	font-family: inherit;
	cursor: pointer;
	box-shadow: 0 1px 2px rgba(37, 99, 235, 0.25);
	transition: transform 0.12s, box-shadow 0.15s, background 0.15s;
}

button:hover,
.btn:hover {
	background: linear-gradient(180deg, #2563eb 0%, var(--primary-hover) 100%);
	box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
}

button:active,
.btn:active {
	transform: translateY(1px);
}

.btn-ghost,
button.btn-ghost {
	background: var(--card);
	border: 1px solid var(--border);
	color: var(--text-secondary);
	box-shadow: var(--shadow-sm);
}

.btn-ghost:hover {
	background: var(--bg-elevated);
	border-color: var(--border-strong);
	color: var(--text);
}

.btn-danger,
button.btn-danger {
	background: linear-gradient(180deg, #ef4444 0%, var(--danger) 100%);
	box-shadow: 0 1px 2px rgba(220, 38, 38, 0.25);
}

.btn-danger:hover {
	background: linear-gradient(180deg, #dc2626 0%, #b91c1c 100%);
}

.btn-sm {
	padding: 6px 12px;
	font-size: 0.82rem;
}

table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.88rem;
}

th,
td {
	padding: 12px 10px;
	border-bottom: 1px solid var(--border);
	text-align: left;
	vertical-align: middle;
}

th {
	color: var(--muted);
	font-weight: 600;
	font-size: 0.78rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	background: var(--bg-elevated);
}

tbody tr:hover td {
	background: #f8fafc;
}

.err {
	color: var(--danger);
	font-size: 0.88rem;
	margin-top: 8px;
}

.ok-msg {
	color: var(--success);
	font-size: 0.88rem;
	margin-top: 8px;
}

.meta {
	color: var(--muted);
	font-size: 0.88rem;
	line-height: 1.5;
}