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

body {
	font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	min-height: 100vh;
	color: #333;
}

.container {
	display: flex;
	flex-direction: column;
	height: 100vh;
}

.header {
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	padding: 1rem 2rem;
	display: flex;
	justify-content: space-between;
	align-items: center;
	box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
	border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header h1 {
	color: #4a5568;
	font-size: 1.8rem;
	font-weight: 600;
}

.controls {
	display: flex;
	gap: 1rem;
}

.btn {
	padding: 0.5rem 1rem;
	border: none;
	border-radius: 8px;
	cursor: pointer;
	font-weight: 500;
	transition: all 0.3s ease;
	text-decoration: none;
	display: inline-block;
}

.btn-primary {
	background: #4299e1;
	color: white;
}

.btn-primary:hover {
	background: #3182ce;
	transform: translateY(-2px);
	box-shadow: 0 4px 12px rgba(66, 153, 225, 0.4);
}

.btn-secondary {
	background: #718096;
	color: white;
}

.btn-secondary:hover {
	background: #4a5568;
	transform: translateY(-2px);
}

.btn-danger {
	background: #e53e3e;
	color: white;
}

.btn-danger:hover {
	background: #c53030;
	transform: translateY(-2px);
}

.btn-outline {
	background: transparent;
	color: #4299e1;
	border: 2px solid #4299e1;
}

.btn-outline:hover {
	background: #4299e1;
	color: white;
}

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

.main-content {
	display: flex;
	flex: 1;
	overflow: hidden;
}

.toolbar {
	width: 250px;
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	padding: 1.5rem;
	border-right: 1px solid rgba(255, 255, 255, 0.2);
	overflow-y: auto;
}

.toolbar h3,
.toolbar h4 {
	color: #4a5568;
	margin-bottom: 1rem;
}

.object-palette {
	margin-bottom: 2rem;
}

.palette-item {
	display: flex;
	flex-direction: column;
	align-items: center;
	padding: 1rem;
	margin-bottom: 1rem;
	background: white;
	border-radius: 12px;
	cursor: pointer;
	transition: all 0.3s ease;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
	border: 2px solid transparent;
}

.palette-item:hover {
	transform: translateY(-3px);
	box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
	border-color: #4299e1;
}

.palette-item span {
	font-weight: 600;
	color: #4a5568;
	margin: 0.5rem 0;
}

.palette-item small {
	color: #718096;
	font-size: 0.8rem;
	text-align: center;
}

.triangle-preview {
	width: 0;
	height: 0;
	border-left: 15px solid transparent;
	border-right: 15px solid transparent;
	border-bottom: 25px solid #48bb78;
}

.square-preview {
	width: 30px;
	height: 30px;
	background: #4299e1;
	border-radius: 4px;
}

.connection-mode {
	border-top: 1px solid rgba(0, 0, 0, 0.1);
	padding-top: 1rem;
}

.connection-mode .btn {
	width: 100%;
	margin-bottom: 0.5rem;
}

.canvas-container {
	flex: 1;
	position: relative;
	background: rgba(255, 255, 255, 0.1);
	backdrop-filter: blur(5px);
	border-radius: 0 0 0 20px;
	overflow: hidden;
}

#canvas {
	width: 100%;
	height: 100%;
	background: white;
	cursor: default;
	border-radius: 0 0 0 20px;
}

.properties-panel {
	width: 300px;
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	padding: 1.5rem;
	border-left: 1px solid rgba(255, 255, 255, 0.2);
	overflow-y: auto;
}

.properties-panel h3 {
	color: #4a5568;
	margin-bottom: 1rem;
}

.no-selection {
	color: #718096;
	font-style: italic;
	text-align: center;
	padding: 2rem 0;
}

.property-group {
	margin-bottom: 1.5rem;
	padding: 1rem;
	background: white;
	border-radius: 8px;
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.property-group h4 {
	color: #4a5568;
	margin-bottom: 0.5rem;
	font-size: 0.9rem;
	text-transform: uppercase;
	letter-spacing: 1px;
}

.property-group input,
.property-group textarea,
.property-group select {
	width: 100%;
	padding: 0.5rem;
	border: 1px solid #e2e8f0;
	border-radius: 4px;
	font-size: 0.9rem;
	margin-bottom: 0.5rem;
}

.property-group textarea {
	resize: vertical;
	min-height: 60px;
}

.tooltip {
	position: absolute;
	background: rgba(0, 0, 0, 0.8);
	color: white;
	padding: 0.5rem;
	border-radius: 4px;
	font-size: 0.8rem;
	pointer-events: none;
	z-index: 1000;
	display: none;
}

.mode-connecting #canvas {
	cursor: crosshair;
}

.mode-selecting #canvas {
	cursor: default;
}

/* Animation classes */
.shake {
	animation: shake 0.5s ease-in-out;
}

@keyframes shake {
	0%,
	100% {
		transform: translateX(0);
	}
	25% {
		transform: translateX(-5px);
	}
	75% {
		transform: translateX(5px);
	}
}

.pulse {
	animation: pulse 1s infinite;
}

@keyframes pulse {
	0% {
		transform: scale(1);
	}
	50% {
		transform: scale(1.05);
	}
	100% {
		transform: scale(1);
	}
}

/* Connection label styling */
.connection-label {
	background: rgba(255, 255, 255, 0.9);
	border: 1px solid #4a5568;
	border-radius: 4px;
	padding: 2px 6px;
	font-size: 11px;
	color: #4a5568;
	pointer-events: none;
}

.property-group label {
	display: block;
	margin-bottom: 0.25rem;
	font-weight: 500;
	color: #4a5568;
	font-size: 0.85rem;
}

/* Warning styling for overhead cable validation */
.warning {
	color: #d69e2e;
	background-color: #fef5e7;
	border: 1px solid #f6e05e;
	border-radius: 4px;
	padding: 0.5rem;
	margin: 0.5rem 0;
	font-size: 0.85rem;
}

.warning strong {
	color: #c05621;
}

.pole-node {
	background: #4a5568 !important;
	border-color: #2d3748 !important;
}

.cable-box-node {
	background: #4299e1 !important;
	border-color: #2c5282 !important;
}

/* Power system specific styling */
.transformer-preview {
	width: 0;
	height: 0;
	border-left: 15px solid transparent;
	border-right: 15px solid transparent;
	border-bottom: 25px solid #48bb78;
}

.node-preview {
	width: 30px;
	height: 30px;
	background: linear-gradient(45deg, #4299e1 50%, #4a5568 50%);
	border-radius: 4px;
}

/* Responsive design */
@media (max-width: 1024px) {
	.main-content {
		flex-direction: column;
	}

	.toolbar,
	.properties-panel {
		width: 100%;
		max-height: 200px;
	}

	.canvas-container {
		border-radius: 0;
	}

	#canvas {
		border-radius: 0;
	}
}