:root {
	--primary: #1968D7;
	--white: #FFFFFF;
	--gray: #7F8791;
	--black: #000000;
	--border: #E4E8EE;
	--bg: #F7F9FC;
	--success: #2E9B57;
	--warning: #E7A400;
	--danger: #D64545;
	--radius: 14px;
	--radius-sm: 10px;
	--radius-lg: 18px;
	--sidebar-width: 280px;
}

* {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	padding: 0;
	font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
	background: var(--bg);
	color: var(--black);
}

body {
	min-height: 100vh;
}

a {
	text-decoration: none;
	color: inherit;
}

.layout {
	min-height: 100vh;
}

.sidebar {
	width: var(--sidebar-width);
	background: var(--white);
	border-right: 1px solid var(--border);
	padding: 24px 16px;
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	position: fixed;
	top: 0;
	left: 0;
	bottom: 0;
	overflow-y: auto;
	z-index: 20;
}

.sidebar-bottom {
	margin-top: 24px;
}

.sidebar-brand h2 {
	margin: 0;
	font-size: 24px;
	color: var(--black);
}

.sidebar-brand-sub {
	margin-top: 4px;
	color: var(--gray);
	font-size: 13px;
}

.user-panel {
	margin-top: 18px;
	padding: 16px;
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	display: flex;
	gap: 12px;
	align-items: flex-start;
	background: #FAFBFD;
}

.user-avatar {
	width: 52px;
	height: 52px;
	border-radius: 50%;
	background: var(--primary);
	color: var(--white);
	display: flex;
	align-items: center;
	justify-content: center;
	font-weight: 700;
	flex-shrink: 0;
}

.user-info {
	flex: 1;
	min-width: 0;
}

.user-name {
	font-weight: 700;
	color: var(--black);
	margin-bottom: 6px;
	line-height: 1.3;
}

.user-meta,
.user-department,
.user-login {
	color: var(--gray);
	font-size: 13px;
	margin-top: 4px;
	word-break: break-word;
}

.role-badge {
	display: inline-block;
	padding: 5px 10px;
	border-radius: 999px;
	font-size: 12px;
	border: 1px solid var(--border);
	background: var(--white);
}

.role-admin {
	color: var(--danger);
}

.role-manager {
	color: var(--primary);
}

.role-employee {
	color: var(--gray);
}

.nav a {
	display: block;
	padding: 12px 14px;
	border-radius: var(--radius-sm);
	color: var(--gray);
	transition: background-color .2s ease, color .2s ease, transform .15s ease;
}

.nav a:hover {
	background: #F1F6FE;
	color: var(--primary);
}

.nav a.active {
	background: var(--primary);
	color: var(--white);
}

.sidebar-logout {
	width: 100%;
	margin-top: 12px;
	text-align: center;
}

.content {
	margin-left: var(--sidebar-width);
	min-height: 100vh;
	padding: 24px;
}

.topbar {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 12px;
	margin-bottom: 20px;
	flex-wrap: wrap;
}

h1,
h2,
h3,
h4 {
	color: var(--black);
	margin-top: 0;
}

p,
small,
label {
	color: var(--gray);
}

.card {
	background: var(--white);
	border: 1px solid var(--border);
	padding: 20px;
	margin-bottom: 16px;
	border-radius: var(--radius-lg);
	animation: fadeUp .25s ease;
}

.grid-2 {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 16px;
}

.grid-4 {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 16px;
}

.control {
	margin-bottom: 14px;
}

.input,
.select,
.textarea {
	font-family: 'Segoe UI', Tahoma, sans-serif;
	font-size: 1rem;
	width: 100%;
	border: 2px solid var(--border);
	background: var(--white);
	color: var(--black);
	padding: 10px 16px;
	line-height: 1.5;
	outline: none;
	transition: border-color .1s ease, background-color .1s ease;
	border-radius: var(--radius-sm);
	height: 48px;
}

.input:focus,
.select:focus,
.textarea:focus {
	border-color: var(--primary);
	background: #FCFDFF;
}

.textarea {
	min-height: 120px;
	resize: vertical;
}

.search-panel {
	display: flex;
	gap: 12px;
	flex-wrap: wrap;
	align-items: end;
}

.search-panel .control {
	margin-bottom: 0;
}

.search-main {
	flex: 2 1 320px;
}

.search-sm {
	flex: 1 1 180px;
}

.search-actions {
	display: flex;
	gap: 10px;
	align-items: center;
}

.btn {
	border: 1px solid transparent;
	background: var(--white);
	color: var(--black);
	padding: 12px 16px;
	cursor: pointer;
	transition: transform .15s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
	border-radius: var(--radius-sm);
	display: inline-flex;
	align-items: center;
	justify-content: center;
	font-size: 1rem;
	height: 48px;
}

.btn:active {
	transform: translateY(0);
}

.btn-primary {
	background: var(--primary);
	color: var(--white);
	border-color: var(--primary);
}

.btn-primary:hover {
	background: #1459BA;
}

.btn-secondary {
	border-color: var(--border);
	color: var(--gray);
}

.btn-secondary:hover {
	background: #F4F7FB;
	color: var(--black);
}

.btn-danger {
	background: var(--danger);
	color: var(--white);
	border-color: var(--danger);
}

.btn-danger:hover {
	background: #BF3535;
}

.table-wrap {
	overflow-x: auto;
	border-radius: var(--radius);
	border: 1px solid var(--border);
	background: var(--white);
}

table {
	width: 100%;
	border-collapse: collapse;
	min-width: 820px;
	background: var(--white);
}

th,
td {
	padding: 13px 10px;
	border-right: 1px solid #EEF2F6;
	border-bottom: 1px solid #EEF2F6;
	text-align: left;
	vertical-align: middle;
}

th:last-child,
td:last-child {
	border-right: none;
}

tbody tr {
	transition: background-color .15s ease;
}

tbody tr:hover {
	background: #F8FBFF;
}

tbody tr:last-child td {
	border-bottom: none;
}

th {
	color: var(--gray);
	background: #FCFDFE;
}

.table-sort-link {
	color: var(--gray);
	display: inline-flex;
	align-items: center;
	gap: 4px;
	transition: color .2s ease;
	white-space: nowrap;
}

.table-sort-link:hover {
	color: var(--primary);
}

.table-sort-link.active {
	color: var(--primary);
	font-weight: 700;
}

.badge {
	display: inline-block;
	padding: 6px 10px;
	font-size: 12px;
	border: 1px solid transparent;
	border-radius: 999px;
	text-wrap-mode: nowrap;
}

.status-new {
	background: #EEF5FF;
	color: var(--primary);
}

.status-in_progress {
	background: #FFF7E1;
	color: #B98000;
}

.status-done {
	background: #EDF9F1;
	color: var(--success);
}

.status-rejected {
	background: #FFF0F0;
	color: var(--danger);
}

.priority-low {
	background: #F1F3F6;
	color: var(--gray);
}

.priority-medium {
	background: #EEF5FF;
	color: var(--primary);
}

.priority-high {
	background: #FFF7E1;
	color: #B98000;
}

.priority-critical {
	background: #FFF0F0;
	color: var(--danger);
}

.auth-wrap {
	min-height: 100vh;
	display: grid;
	place-items: center;
	padding: 24px;
}

.auth-card {
	width: 100%;
	max-width: 420px;
	background: var(--white);
	border: 1px solid var(--border);
	padding: 24px;
	border-radius: var(--radius-lg);
	animation: fadeUp .4s ease;
}

.error {
	color: var(--danger);
	margin-bottom: 12px;
}

.error-box {
	color: var(--danger);
	border-color: #F0CACA;
	background: #FFF7F7;
}

.comment {
	border: 1px solid var(--border);
	padding: 14px;
	background: var(--white);
	border-radius: var(--radius);
	margin-bottom: 12px;
}

.comments-scroll {
	min-height: 420px;
	max-height: 420px;
	overflow-y: auto;
	padding-right: 6px;
}

.comments-scroll::-webkit-scrollbar {
	width: 8px;
}

.comments-scroll::-webkit-scrollbar-thumb {
	background: #D7DFEA;
	border-radius: 999px;
}

.time-local {
	color: var(--gray);
}

.tabs {
	display: flex;
	gap: 8px;
	margin-bottom: 18px;
	flex-wrap: wrap;
}

.tab-btn {
	padding: 10px 16px;
	border: 1px solid var(--border);
	border-radius: var(--radius-sm);
	background: var(--white);
	color: var(--gray);
	transition: .2s ease;
}

.tab-btn:hover {
	color: var(--primary);
	border-color: var(--primary);
}

.tab-btn.active {
	background: var(--primary);
	color: var(--white);
	border-color: var(--primary);
}

.pagination {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
	margin-top: 18px;
}

.page-btn {
	min-width: 40px;
	height: 40px;
	border: 1px solid var(--border);
	border-radius: var(--radius-sm);
	display: inline-flex;
	align-items: center;
	justify-content: center;
	background: var(--white);
	color: var(--gray);
}

.page-btn:hover {
	border-color: var(--primary);
	color: var(--primary);
}

.page-btn.active {
	background: var(--primary);
	color: var(--white);
	border-color: var(--primary);
}

@keyframes fadeUp {
	from {
		opacity: 0;
		transform: translateY(8px);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@media (max-width: 900px) {
	.sidebar {
		position: relative;
		width: 100%;
		height: auto;
		border-right: none;
		border-bottom: 1px solid var(--border);
	}

	.content {
		margin-left: 0;
	}

	.grid-2,
	.grid-4 {
		grid-template-columns: 1fr;
	}

	.search-panel {
		align-items: stretch;
	}

	.search-actions {
		width: 100%;
	}
}