/* Базовые стили */
* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
	background: var(--primary-bg);
	color: var(--text-primary);
	line-height: 1.6;
	overflow-x: hidden;
}

.container {
	max-width: var(--max-width);
	margin: 0 auto;
	padding: 0 20px;
}

/* Header */
.header {
	background: var(--header-bg);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--border-color);
	height: var(--header-height);
	position: sticky;
	top: 0;
	z-index: 1000;
}

.header-content {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 100%;
}

.logo {
	display: flex;
	align-items: center;
	gap: 12px;
}

.logo-icon {
	width: 40px;
	height: 40px;
	background: linear-gradient(
		135deg,
		var(--accent-primary),
		var(--accent-secondary)
	);
	border-radius: var(--border-radius-sm);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 1.2rem;
}

.logo-text h1 {
	font-size: 1.5rem;
	font-weight: 700;
	background: linear-gradient(
		135deg,
		var(--accent-primary),
		var(--accent-secondary)
	);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.logo-text span {
	font-size: 0.8rem;
	color: var(--text-muted);
}

.header-actions {
	display: flex;
	align-items: center;
	gap: 20px;
}

.theme-toggle {
	background: var(--tertiary-bg);
	border: none;
	width: 40px;
	height: 40px;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	color: var(--text-primary);
	transition: var(--transition);
}

.theme-toggle:hover {
	background: var(--accent-primary);
	transform: rotate(15deg);
}

.user-info {
	display: flex;
	align-items: center;
	gap: 12px;
}

.avatar {
	width: 40px;
	height: 40px;
	background: var(--tertiary-bg);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--accent-primary);
}

.user-details {
	display: flex;
	flex-direction: column;
}

.user-details strong {
	font-size: 0.9rem;
}

.user-details span {
	font-size: 0.8rem;
	color: var(--text-muted);
}

/* Navigation */
.navbar {
	background: var(--secondary-bg);
	border-bottom: 1px solid var(--border-color);
	height: var(--nav-height);
}

.nav-content {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 100%;
}

.nav-menu {
	display: flex;
	list-style: none;
	gap: 8px;
}

.nav-item {
	position: relative;
}

.nav-link {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 12px 20px;
	color: var(--text-secondary);
	text-decoration: none;
	border-radius: var(--border-radius-sm);
	transition: var(--transition);
	font-weight: 500;
}

.nav-link:hover,
.nav-item.active .nav-link {
	background: var(--tertiary-bg);
	color: var(--text-primary);
}

.nav-item.active .nav-link {
	color: var(--accent-primary);
}

.nav-item.active::after {
	content: '';
	position: absolute;
	bottom: -1px;
	left: 20px;
	right: 20px;
	height: 2px;
	background: var(--accent-primary);
	border-radius: 2px;
}

/* Main Layout */
.main {
	padding: 40px 0;
}

.grid-layout {
	display: grid;
	grid-template-columns: var(--sidebar-width) 1fr;
	gap: 30px;
	align-items: start;
}

/* Sidebar */
.sidebar {
	position: sticky;
	top: calc(var(--header-height) + var(--nav-height) + 40px);
}

.stats-card,
.quick-links {
	background: var(--card-bg);
	border-radius: var(--border-radius);
	padding: 24px;
	margin-bottom: 24px;
	border: 1px solid var(--border-color);
	box-shadow: var(--shadow);
}

.stats-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 24px;
}

.stats-header h3 {
	font-size: 1.2rem;
	font-weight: 600;
}

.last-update {
	display: flex;
	align-items: center;
	gap: 6px;
	font-size: 0.8rem;
	color: var(--text-muted);
}

/* Progress Circle */
.progress-circle {
	display: flex;
	justify-content: center;
	margin: 24px 0;
}

.circle {
	width: 120px;
	height: 120px;
	background: conic-gradient(
		var(--accent-success) 300deg,
		/* 5/6 от 360° = 300° */ var(--tertiary-bg) 0deg
	);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	position: relative;
}

.circle::before {
	content: '';
	position: absolute;
	width: 90px;
	height: 90px;
	background: var(--card-bg);
	border-radius: 50%;
}

.circle-content {
	position: relative;
	z-index: 1;
	text-align: center;
}

.progress-value {
	display: block;
	font-size: 1.5rem;
	font-weight: 700;
	color: var(--text-primary);
}

.progress-label {
	font-size: 0.8rem;
	color: var(--text-muted);
}

/* Stats Details */
.stats-details {
	margin: 24px 0;
}

.stat-item {
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 12px 0;
	border-bottom: 1px solid var(--border-color);
}

.stat-item:last-child {
	border-bottom: none;
}

.stat-icon {
	width: 40px;
	height: 40px;
	border-radius: var(--border-radius-sm);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 1.1rem;
}

.stat-icon.python {
	background: linear-gradient(135deg, #3776ab, #ffde57);
	color: #1e3a5f;
}

.stat-icon.sql {
	background: linear-gradient(135deg, #336791, #f29111);
	color: white;
}

.stat-value {
	display: block;
	font-weight: 700;
	font-size: 1.1rem;
}

.stat-label {
	font-size: 0.8rem;
	color: var(--text-muted);
}

.task-link {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 12px 16px;
	background: var(--tertiary-bg);
	color: var(--text-primary);
	text-decoration: none;
	border-radius: var(--border-radius-sm);
	transition: var(--transition);
	font-weight: 500;
}

.task-link:hover {
	background: var(--accent-primary);
	transform: translateY(-2px);
}

/* Quick Links */
.quick-links h4 {
	margin-bottom: 16px;
	font-size: 1.1rem;
}

.link-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 12px;
}

.quick-link {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 8px;
	padding: 16px;
	background: var(--tertiary-bg);
	border-radius: var(--border-radius-sm);
	text-decoration: none;
	color: var(--text-secondary);
	transition: var(--transition);
	text-align: center;
}

.quick-link:hover {
	background: var(--accent-primary);
	color: white;
	transform: translateY(-2px);
}

.quick-link i {
	font-size: 1.2rem;
}

.quick-link span {
	font-size: 0.8rem;
	font-weight: 500;
}

/* Content */
.content {
	min-height: 600px;
}

.welcome-card {
	background: linear-gradient(
		135deg,
		var(--accent-primary),
		var(--accent-secondary)
	);
	border-radius: var(--border-radius);
	padding: 40px;
	margin-bottom: 30px;
	display: flex;
	justify-content: space-between;
	align-items: center;
	color: white;
	position: relative;
	overflow: hidden;
}

.welcome-card::before {
	content: '';
	position: absolute;
	top: -50%;
	right: -20%;
	width: 300px;
	height: 300px;
	background: rgba(255, 255, 255, 0.1);
	border-radius: 50%;
}

.welcome-content h2 {
	font-size: 2rem;
	margin-bottom: 8px;
	font-weight: 700;
}

.welcome-content p {
	opacity: 0.9;
	margin-bottom: 24px;
}

.welcome-stats {
	display: flex;
	gap: 30px;
}

.welcome-stat {
	text-align: center;
}

.stat-number {
	display: block;
	font-size: 2rem;
	font-weight: 700;
}

.stat-text {
	font-size: 0.9rem;
	opacity: 0.8;
}

.welcome-graphic {
	position: relative;
	z-index: 1;
}

.graphic-element {
	width: 80px;
	height: 80px;
	background: rgba(255, 255, 255, 0.2);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 2rem;
	animation: float 3s ease-in-out infinite;
}

@keyframes float {
	0%,
	100% {
		transform: translateY(0);
	}
	50% {
		transform: translateY(-10px);
	}
}

/* Labs Grid */
.labs-grid {
	background: var(--card-bg);
	border-radius: var(--border-radius);
	padding: 30px;
	border: 1px solid var(--border-color);
	box-shadow: var(--shadow);
}

.section-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 30px;
}

.section-header h3 {
	font-size: 1.5rem;
	font-weight: 600;
}

.cards-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
	gap: 24px;
}

.lab-card {
	background: var(--secondary-bg);
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius);
	padding: 24px;
	transition: var(--transition);
	position: relative;
	overflow: hidden;
}

.lab-card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 3px;
	background: var(--accent-success);
}

.lab-card.in-progress::before {
	background: var(--accent-warning);
}

.lab-card:hover {
	transform: translateY(-5px);
	box-shadow: var(--shadow-lg);
	border-color: var(--accent-primary);
}

.card-header {
	display: flex;
	align-items: center;
	gap: 12px;
	margin-bottom: 16px;
}

.lab-badge {
	width: 40px;
	height: 40px;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 0.9rem;
}

.lab-badge.completed {
	background: var(--accent-success);
	color: white;
}

.lab-badge.in-progress {
	background: var(--accent-warning);
	color: white;
	animation: pulse 2s infinite;
}

@keyframes pulse {
	0%,
	100% {
		opacity: 1;
	}
	50% {
		opacity: 0.7;
	}
}

.lab-meta {
	display: flex;
	flex-direction: column;
}

.lab-number {
	font-weight: 600;
	font-size: 0.9rem;
}

.card-body h4 {
	font-size: 1.2rem;
	margin-bottom: 8px;
	font-weight: 600;
}

.lab-stats {
	display: flex;
	gap: 16px;
}

.lab-stats .stat {
	display: flex;
	align-items: center;
	gap: 6px;
	font-size: 0.8rem;
	color: var(--text-muted);
}

.card-footer {
	display: flex;
	gap: 8px;
	margin-top: 16px;
}

.card-btn {
	display: flex;
	align-items: center;
	gap: 6px;
	padding: 10px 16px;
	border: none;
	border-radius: var(--border-radius-sm);
	cursor: pointer;
	transition: var(--transition);
	font-size: 0.9rem;
	font-weight: 500;
	text-decoration: none;
}

.card-btn.primary {
	background: var(--accent-primary);
	color: white;
	flex: 1;
	justify-content: center;
}

.card-btn.primary:hover {
	background: var(--accent-secondary);
	transform: translateY(-2px);
}

.card-btn.secondary {
	background: var(--tertiary-bg);
	color: var(--text-primary);
	width: 40px;
	justify-content: center;
}

.card-btn.secondary:hover {
	background: var(--border-color);
}

/* Footer */
.footer {
	background: var(--header-bg);
	border-top: 1px solid var(--border-color);
	padding: 40px 0 20px;
	margin-top: 60px;
}

.footer-content {
	display: grid;
	grid-template-columns: 2fr 1fr;
	gap: 40px;
	margin-bottom: 30px;
}

.footer-logo {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 1.2rem;
	font-weight: 700;
	margin-bottom: 12px;
	color: var(--accent-primary);
}

.footer-section p {
	color: var(--text-secondary);
	margin-bottom: 20px;
	font-size: 0.9rem;
}

.social-links {
	display: flex;
	gap: 12px;
}

.social-link {
	width: 36px;
	height: 36px;
	background: var(--tertiary-bg);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--text-primary);
	text-decoration: none;
	transition: var(--transition);
}

.social-link:hover {
	background: var(--accent-primary);
	transform: translateY(-2px);
}

.footer-section h4 {
	margin-bottom: 16px;
	font-size: 1.1rem;
}

.contact-item {
	display: flex;
	align-items: center;
	gap: 8px;
	margin-bottom: 12px;
	color: var(--text-secondary);
	font-size: 0.9rem;
}

/* Адаптивность */
@media (max-width: 1200px) {
	.grid-layout {
		grid-template-columns: 1fr;
		gap: 20px;
	}

	.sidebar {
		position: static;
	}
}

@media (max-width: 768px) {
	.container {
		padding: 0 16px;
	}

	.header-content {
		flex-direction: column;
		gap: 12px;
		padding: 12px 0;
		height: auto;
	}

	.navbar {
		height: auto;
		padding: 12px 0;
	}

	.nav-content {
		flex-direction: column;
		gap: 16px;
	}

	.nav-menu {
		flex-wrap: wrap;
		justify-content: center;
	}

	.welcome-card {
		flex-direction: column;
		text-align: center;
		gap: 24px;
	}

	.welcome-stats {
		justify-content: center;
	}

	.section-header {
		flex-direction: column;
		gap: 16px;
		align-items: stretch;
	}

	.cards-grid {
		grid-template-columns: 1fr;
	}

	.footer-content {
		grid-template-columns: 1fr;
		gap: 30px;
	}

	.link-grid {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 480px) {
	.lab-stats {
		flex-direction: column;
		gap: 8px;
	}

	.card-footer {
		flex-direction: column;
	}

	.welcome-stats {
		flex-direction: column;
		gap: 16px;
	}
}