:root {
	--primary-color: #2563eb;
	--primary-hover: #1d4ed8;
	--success-color: #059669;
	--danger-color: #dc2626;
	--text-primary: #111827;
	--text-secondary: #6b7280;
	--text-tertiary: #9ca3af;
	--bg-body: #f8fafc;
	--bg-primary: #ffffff;
	--bg-secondary: #f9fafb;
	--border-color: #e2e8f0;
	--border-strong: #cbd5e1;
	--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
	--shadow-md: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
	--shadow-panel: 0 0 0 1px rgba(0, 0, 0, 0.03), 0 2px 4px 0 rgba(0, 0, 0, 0.04);
	--radius-sm: 0.25rem;
	--radius-md: 0.5rem;
	--radius-lg: 0.75rem;
}

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

body {
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
	background: var(--bg-body);
	color: var(--text-primary);
	min-height: 100vh;
	padding: 0;
	margin: 0;
	line-height: 1.5;
}

#main {
	max-width: 1400px;
	margin: 0 auto;
	padding: 2rem;
	min-height: 100vh;
}

/* Header */
.dashboard-header {
	margin-bottom: 2rem;
}

.dashboard-header h1 {
	font-size: 1.75rem;
	font-weight: 600;
	color: var(--text-primary);
	margin: 0;
	letter-spacing: -0.025em;
}

/* Dashboard Grid Layout */
.dashboard-grid {
	display: grid;
	grid-template-columns: repeat(12, 1fr);
	gap: 1.5rem;
}

/* Panel Base Styling */
.panel {
	background: var(--bg-primary);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-lg);
	box-shadow: var(--shadow-panel);
	padding: 1.5rem;
	overflow: hidden;
}

.panel h2 {
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--text-secondary);
	margin: 0 0 1rem 0;
	text-transform: uppercase;
	letter-spacing: 0.075em;
}

/* Balance Panel - Large card in top left */
.balance-panel {
	grid-column: span 4;
	display: flex;
	flex-direction: column;
	min-height: 0;
}

.balance-display {
	display: flex;
	flex-direction: column;
	justify-content: center;
	padding: 1rem 0;
}

.balance-amount {
	font-size: 2.5rem;
	font-weight: 600;
	color: var(--text-primary);
	letter-spacing: -0.025em;
	font-variant-numeric: tabular-nums;
	line-height: 1.2;
}

.balance-label {
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--text-secondary);
	margin-top: 0.5rem;
}

/* Chart Panel - Wide card at top right */
.chart-panel {
	grid-column: span 8;
	padding: 0;
	display: flex;
	flex-direction: column;
	min-height: 0;
}

/* Balance Chart Component */
.balance-chart {
	display: flex;
	flex-direction: column;
	height: auto;
}

.chart-header {
	padding: 1.5rem 1.5rem 0.75rem 1.5rem;
	border-bottom: 1px solid var(--border-color);
}

.chart-title {
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--text-secondary);
	text-transform: uppercase;
	letter-spacing: 0.075em;
}

.balance-chart svg {
	width: 100%;
	height: 180px;
	display: block;
}

/* Transfer Panel - Medium card */
.transfer-panel {
	grid-column: span 4;
}

.transfer-form {
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
}

/* Transactions Panel - Wide card at bottom */
.transactions-panel {
	grid-column: span 8;
	padding: 0;
}

.transactions-panel h2 {
	padding: 1.5rem 1.5rem 0 1.5rem;
	margin-bottom: 0;
}

/* Form Controls */
input[type="text"],
input[type="password"],
input[type="number"] {
	width: 100%;
	padding: 0.625rem 0.875rem;
	border: 1px solid var(--border-color);
	border-radius: var(--radius-md);
	font-size: 0.875rem;
	transition: all 0.15s ease;
	background: var(--bg-primary);
	color: var(--text-primary);
	font-family: inherit;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="number"]:focus {
	outline: none;
	border-color: var(--primary-color);
	box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

input::placeholder {
	color: var(--text-tertiary);
}

/* Buttons */
button {
	padding: 0.625rem 1rem;
	border: none;
	border-radius: var(--radius-md);
	font-size: 0.875rem;
	font-weight: 500;
	cursor: pointer;
	transition: all 0.15s ease;
	font-family: inherit;
}

button[type="button"],
button[type="submit"] {
	background: var(--primary-color);
	color: white;
	width: 100%;
}

button[type="button"]:hover,
button[type="submit"]:hover {
	background: var(--primary-hover);
}

button[type="button"]:active,
button[type="submit"]:active {
	transform: scale(0.98);
}

button:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

/* Transaction List */
.transaction-list {
	list-style: none;
	padding: 0;
	margin: 0;
}

.transaction-item {
	padding: 0.875rem 1.5rem;
	border-top: 1px solid var(--border-color);
	display: flex;
	align-items: center;
	gap: 0.875rem;
	transition: background 0.1s ease;
}

.transaction-item:first-child {
	border-top: none;
}

.transaction-item:hover {
	background: var(--bg-secondary);
}

.transaction-icon {
	width: 28px;
	height: 28px;
	border-radius: var(--radius-sm);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 0.875rem;
	font-weight: 600;
	flex-shrink: 0;
	background: var(--bg-secondary);
	border: 1px solid var(--border-color);
}

.transaction-item.received .transaction-icon {
	color: var(--success-color);
}

.transaction-item.sent .transaction-icon {
	color: var(--danger-color);
}

.transaction-details {
	flex: 1;
	display: flex;
	flex-direction: column;
	gap: 0.125rem;
	min-width: 0;
}

.transaction-type {
	font-weight: 500;
	font-size: 0.8125rem;
	color: var(--text-primary);
	line-height: 1.4;
}

.transaction-subject {
	font-size: 0.6875rem;
	color: var(--text-secondary);
	line-height: 1.4;
}

.transaction-subject b {
	color: var(--text-primary);
	font-weight: 500;
}

.transaction-amount {
	font-size: 0.8125rem;
	font-weight: 600;
	flex-shrink: 0;
	font-variant-numeric: tabular-nums;
	min-width: 70px;
	text-align: right;
}

.transaction-amount.received {
	color: var(--success-color);
}

.transaction-amount.received::before {
	content: '+$';
}

.transaction-amount.sent {
	color: var(--text-primary);
}

.transaction-amount.sent::before {
	content: '-$';
}

/* Empty state */
.transaction-list:empty {
	padding: 3rem 2rem;
	text-align: center;
}

.transaction-list:empty::after {
	content: 'No transactions yet';
	color: var(--text-tertiary);
	font-size: 0.875rem;
}

/* Auth Form */
body:has(form) {
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 2rem;
}

form {
	background: var(--bg-primary);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-lg);
	box-shadow: var(--shadow-panel);
	padding: 2rem;
	max-width: 380px;
	width: 100%;
}

form h1 {
	margin-bottom: 0.5rem;
	text-align: center;
	font-size: 1.5rem;
	font-weight: 600;
	color: var(--text-primary);
	letter-spacing: -0.025em;
}

.auth-subtitle {
	text-align: center;
	color: var(--text-secondary);
	font-size: 0.875rem;
	margin-bottom: 1.5rem;
}

form input {
	margin-bottom: 0.75rem;
}

form button {
	margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
	.dashboard-grid {
		grid-template-columns: repeat(8, 1fr);
	}

	.balance-panel {
		grid-column: span 8;
	}

	.chart-panel {
		grid-column: span 8;
	}

	.transfer-panel {
		grid-column: span 8;
	}

	.transactions-panel {
		grid-column: span 8;
	}
}

@media (max-width: 768px) {
	#main {
		padding: 1.5rem 1rem;
	}

	.dashboard-header h1 {
		font-size: 1.5rem;
	}

	.dashboard-grid {
		gap: 1rem;
	}

	.panel {
		padding: 1.25rem;
	}

	.balance-amount {
		font-size: 2rem;
	}

	.balance-chart svg {
		height: 150px;
	}

	.chart-header,
	.transactions-panel h2 {
		padding: 1.25rem 1.25rem 0.75rem 1.25rem;
	}

	.transaction-item {
		padding: 0.75rem 1.25rem;
		gap: 0.75rem;
	}
}

@media (max-width: 480px) {
	#main {
		padding: 1rem 0.75rem;
	}

	.dashboard-header {
		margin-bottom: 1.5rem;
	}

	.dashboard-header h1 {
		font-size: 1.25rem;
	}

	.dashboard-grid {
		gap: 0.875rem;
	}

	.panel {
		padding: 1rem;
	}

	.balance-amount {
		font-size: 1.75rem;
	}

	.balance-chart svg {
		height: 120px;
	}

	.panel h2,
	.chart-title {
		font-size: 0.6875rem;
	}

	.chart-header,
	.transactions-panel h2 {
		padding: 1rem 1rem 0.625rem 1rem;
	}

	.transaction-item {
		padding: 0.625rem 1rem;
	}

	.transaction-icon {
		width: 26px;
		height: 26px;
		font-size: 0.8125rem;
	}

	form {
		padding: 1.5rem;
	}
}