body { margin: 0; font-family: Arial, sans-serif; }
/* Sidebar */
.sidebar {
	height: 100%;
	width: 250px;
	position: fixed;
	top: 0;
	left: 0; /* Visible by default */
	background-color: #333;
	color: white;
	padding-top: 20px;
	transition: 0.3s;
}
.sidebar a {
	padding: 10px 20px;
	display: block;
	color: white;
	text-decoration: none;
}
.sidebar a:hover {
	background-color: #575757;
}

/* content/tab panes */
.content { display: none; margin-left: 250px; padding: 12px; }
.content.active { display: block; }
/* Button */
.toggle-btn {
	display: none; /* hide toggle when sidebar is always open */
}
/* Keep .sidebar.open rule for compatibility */
.sidebar.open {
	left: 0;
}
.box {
	/* fill available main area to the right of the sidebar */
	width: calc(100% - 260px);
	/* allow larger layouts on wide screens */
	min-height: 240px;
	background-color: #57abc7;
	border: 1px solid #ccc;
	padding: 20px;
	margin-top: 16px;
	font-family: monospace;
	border-radius: 14px;
	box-shadow: 0 6px 18px rgba(0,0,0,0.06);
}

.box h3 { margin: 0 0 12px 0; font-size: 20px; }
.box-input { display: flex; gap: 12px; margin-bottom: 12px; }
.box-input-field { flex: 1; padding: 10px; border: 1px solid #ccc; border-radius: 6px; font-size: 14px; }
.box-add-btn { padding: 8px 12px; background: #1976d2; color: #fff; border: none; border-radius: 6px; cursor: pointer; }
.box-list { list-style: none; padding: 0; margin: 0; max-height: 320px; overflow-y: auto; }
.box-item { padding: 10px 8px; border-bottom: 1px solid rgba(0,0,0,0.06); cursor: pointer; font-size: 15px; }
.box-item.done { text-decoration: line-through; color: #444; opacity: 0.8; }

/* remove button for individual notifications */
.remove-btn {
	float: right;
	background: transparent;
	border: none;
	color: #999;
	font-weight: bold;
	cursor: pointer;
}
.remove-btn:hover { color: #e53935; }

/* Task manager styles */
.task-manager {
	width: calc(100% - 260px);
	background: #fafafa;
	border: 1px solid #ddd;
	padding: 12px;
	margin-top: 12px;
}
.task-manager h2 {
	margin: 0 0 8px 0;
	font-size: 18px;
}
.task-input {
	display: flex;
	gap: 8px;
	margin-bottom: 8px;
}
.task-input input {
	flex: 1;
	padding: 8px;
	border: 1px solid #ccc;
	border-radius: 3px;
}
.task-input button {
	padding: 8px 12px;
	border: none;
	background: #4caf50;
	color: white;
	border-radius: 3px;
	cursor: pointer;
}
#taskList { list-style: none; padding: 0; margin: 0; }
.task-item { padding: 6px 8px; border-bottom: 1px solid #eee; cursor: pointer; }
.task-item.done { text-decoration: line-through; color: #888; }